Dissertations / Theses: 'Scania trucks'

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Dahlberg, Carl. "Reducing Bodybuilder Waste on SCANIA Trucks." Thesis, KTH, Fordonsdynamik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-52455.

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In a world of fierce competition that is the reality for heavy truck manufacturers, it is important to optimize every step of production to the greatest extent. The Swedish truck manufacturer SCANIA early adopted such ideas and has put great efforts to implement a concept called lean production. As a part of the company’s strive for continuous improvement, all parts of the value adding chain shall be as efficient as possible. Previously this work has been focused inside the SCANIA organization but as demands on production volume and profit margin increases, focus turns outside the factory premises. A bodywork is fitted as a last step in the completion of many trucks. This is done by external companies called bodybuilders, outside the control of the factory. In this thesis, the bodybuilder induced waste is addressed from a global perspective. The report is entirely based on interviews with people inside SCANIA, SCANIA’s Swedish business unit, bodybuilders in both Sweden and Poland and a Swedish employer’s organization. Through these interviews, the difficulties surrounding the subject have been mapped from different perspectives. As a complement to the interviews, a program that calculates the annual waste related to shortened chassis frames has been developed. The main waste inducing problem areas found in this thesis is: - Poor communication between seller and bodybuilder before specifying and ordering the chassis. - Poor communication between factory and bodybuilder regarding existing chassis preparations. - A high degree of customer involvement in the bodybuilder process on the Swedish market. - High price sensitivity on the Polish market makes chassis specified without preparations more attractive. - Highly diverse customer demands on the Swedish market. - Insufficient ordering tools to meet the customer demands of individually customized vehicles. - Discrepancies between the global focus at factory and the local nature of the market on which the sellers exist. The costs related to shortened chassis frames alone is estimated to cost SCANIA 5 000 000 SEK annually in terms of reduced chassis frame waste and decreased costs for bound investments when chassis are standing at bodybuilders. In order to go from today’s annual production of 70 000 vehicles to the long-term goal of 150 000 vehicles/year, it will be crucial to reduce waste throughout the whole production chain. This will require better prepared vehicles from factory, better ordering software for the sellers and less rigid customer behaviour on certain markets. The increased communication between seller, bodybuilder and factory will be necessary and could be implemented through cooperation between selected bodybuilders and sellers in a preferred program.

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Hansson, Rickard. "Scania Triton." Thesis, Umeå universitet, Institutionen Designhögskolan, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-83943.

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70 % of the worlds most expensive wildfireshas occurred since year 2003. This is a clear example of that wildfires arean increasingly growing problem which demands new solutions. Some of the most prominent problems of fighting wildfires are the harsh terrainand limited accessibility, the lack of communication and difficulties in creating an overview off the scene and predict how the wildfire will develop. These problems are all factors which I have tried to focus on in my degree project, the Trition. By doing thoroughly research about wildfires and by gathering information and inspiration from other areas, such as the military, it was possible to see the problems of wildfires in a more problem solving perspective. Ideas and forms were generated through unrestrictive sketching and created sketch models.The Trition is a terrain fire truck that serves as a response vehicle, with exceptionally good off-road mobility and that always can be first at the scene. The Trition also serves as a command central which can organise the enormous operations that big fires demands. By having a mobile and multifunctional command central it is possible to always have the latest data about the scene and plan the wildfire fighting in the most efficient way.The Trition is equipped with a drone on its roof. The drone can take off and sweep the area, collecting data which gives the firefighters a good overview and that help to predict the wildfire, such as wind speed and the terrain incline. The drone also has an important preventing function. By regularly sweeping inhabitant areas, the drones infrared camera can detect wildfires earlyon and alert the Trition for an early intervention.

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Larsson, Filip, and Jonas Dahlgren. "Development of an on-demand front wheel drive for Scania trucks." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69564.

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Fjellström, Jonatan. "Gaze Interaction in Modern Trucks." Thesis, Linköpings universitet, Interaktiva och kognitiva system, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-114284.

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In this master thesis project carried out on Scania’s interaction design department in Södertälje an evaluation of the technology gaze interaction has been done. The aim was to see if the technology was suitable for implementation in a truck environment and what potential it had. The work started by doing a context analysis to get a deeper knowledge of the research done on within the area related to the subject. Following the context analysis a comprehensive need finding process was done. In this process, data from interviews, observations, ride along with truck drivers, benchmarking and more was analysed. The analysis of this was used to identify the user needs. Based on the user needs the concept development phase was conducted. The whole development phase was done in different stages and started off by an idea generation process. The work flow was made in small iterations with the idea to continuously improve the concepts. All concepts were evaluated in a concept scoring chart to see which of the concepts that best fulfilled the concept specifications. The concepts that best could highlight the techniques strengths and weaknesses were chosen and these are Head Up Display Interaction and Gaze Support System.. These concepts focused on the interaction part of the technique rather than a specific function. Test of the two concepts were conducted in a simulator to get data and see how they performed compared to today´s Scania trucks. The result overall was good and the test subjects were impressed with the systems. However there was no significance in most of the cases of driving except for some conditions where the concepts prove to be better than the systems used today. Gaze interaction is a technology that is suitable for a truck driving environment given that a few slight improvements are made. Implementation of the concepts have a good potential of reducing road accidents caused by human errors.

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Talah, Sami, Adam Johansson, and Ebba Hansson. "Hur motiverar produktionsföretag sina medarbetare till att uppnå organisationens satta mål och syften? : En kvalitativ intervjustudie på Scania & Volvo Trucks." Thesis, Linnéuniversitetet, Institutionen för ekonomistyrning och logistik (ELO), 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-97040.

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Course: Bachelor thesis in Business Administration, Degree of Master of Science in Business and Economics, Controller major, 15 credits - 2FE24E Institution: School of Business and Economics at Linnaeus University Authors: Adam Johansson, Ebba Hansson, Sami Talah Supervisor: Cristoffer Lokatt Examiner: Pia Nylinder Titel: How do production companies motivate their employees to achieve the organization's set goals and objectives? - A qualitative interview study on Scania & Volvo Trucks Background and problem: Given the significant role that employees have in today's society, it is essential how the employer motivates and directs their employees to make them work with the goals set by the organization. In the production industry, it is difficult to motivate employees because of their monotonous duties. The tasks are considered to be monotonous as they are classified as repetitive, boring and stressful. Gagne & Deci (2005) believe that different employees in different industries are motivated in different ways. The fact that two world-leading companies in the truck industry use different perspectives on how their employees should be motivated and guided to achieve set goals and objectives is therefore interesting to analyze. Purpose: The purpose of this study is to investigate how production companies control their employees with the help of motivation to achieve set goals and objectives. Further this study will analyze the differences in the management control of motivational work and the motives underlying the choice of the organization's management through motivation. Method: This study was conducted as a qualitative interview study of two cases companies. Through semi-structured interviews, two respondents participated. The selection of respondents is a convenience selection due to COVID-19, but the selection of the fall companies is target selected. As a result, the quality of the study has been ensured through the selection of respondents and the choice of theoretical sources. Conclusions: This study as a whole gives some idea of how Scania and Volvo Trucks guiding their employees through motivation to achieve the organization's goals and objectives. What we come to realize is that these two companies choose different approaches. Scania uses more "soft" values, while Volvo Trucks uses more "hard" values. A part of Volvo Trucks' work is to distribute monetary rewards, but also uses "soft" values in their motivational work. But not to the same extent as Scania does. This study also demonstrates that the cultural aspects of how an organization should try to motivate their employees to the goals and objectives have a greater impact than we anticipated. What the companies have in common is that they manage to take into account the individual needs of their employees from different perspectives.

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Celedón, Cruz Liliana Isabel. "A sustainability assessment in the production of heavy-duty trucks : A case study at Scania: investigating the reduction of environmental impacts through design customization and LCA." Thesis, KTH, Hållbar utveckling, miljövetenskap och teknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287370.

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The transport sector is currently facing challenges to reduce environmental impacts during the vehicle’s operation due to its reliance on fossil fuels. The introduction of new technologies such as alternative fuels or battery electric vehicles (BEVs) are therefore rapidly growing because they can significantly reduce the vehicle’s tailpipe emissions. There is however the concern that these could transfer environmental burdens to other life cycle phases such as production. Therefore, a development towards sustainable transport will require more than just the development of alternative fuels or EVs, but also a more sustainable production. Considering that 80% of the product related environmental impacts are determined during the design phase of a product, the significance of product design is studied. Scania offers the opportunity to customize trucks with a high level of detail through customized design, also called S-order design. Design engineers want to know if their customized solutions have the potential to reduce environmental impacts within the production of a truck. Therefore, the life cycle assessment (LCA) framework is used to know the environmental impacts of a truck designed with S- and A-order design and to compare them in order to determine if there is an environmental performance difference between these two designs. The results show that the production of a truck with a S-order design has on average 3% lower environmental impacts on all impact categories than when it’s produced with an A-order design. This is due to the S-order design’s great level of flexibility to consider small details of the truck’s functionality. Nevertheless, this design flexibility can lead to multiple configurations for one truck, thus meaning that the results will vary from product to product since the customer decides the specifications of the truck. The main conclusion is that the early implementation of adaptations through S-order design in heavy truck development at Scania can potentially reduce resource consumption and environmental impacts, and aid to sustainable production. Transportsektorn står för närvarande inför utmaningar för att minska miljöpåverkan under fordonets drift på grund av dess beroende av fossila bränslen. Introduktionen av ny teknik som alternativa bränslen eller elektriska fordon (BEV) växer därför snabbt eftersom de avsevärt kan minska fordonets utsläpp från avgasröret. Det finns emellertid oro för att dessa skulle kunna överföra miljöbelastningar till andra livscykelfaser som exempelvis produktionen. Därför kommer en utveckling mot hållbara transporter att kräva mer än bara utveckling av alternativa bränslen eller eldrift, men också en mer hållbar produktion. Med tanke på att 80% av de produktrelaterade miljöeffekterna bestäms under en produkts designfas studeras därför produktens design. Scania erbjuder möjligheten att skräddarsy lastbilar med hög detaljnivå genom skräddarsydd design, även kallat S-orderdesign. Designingenjörer vill veta om deras skräddarsydda lösningar har potential att minska miljöpåverkan inom tillverkningen av en lastbil. En livscykelanalys (LCA) används därför för att känna till miljöpåverkan från en lastbil konstruerad med S- och A-orderdesign och för att jämföra dem för att avgöra om det finns en skillnad i miljöprestanda mellan dessa två konstruktioner. Resultaten visar att tillverkningen av en lastbil med S-orderdesign har i genomsnitt 3% lägre miljöpåverkan på alla kategorier av miljöpåverkan än en med A-orderdesign. Detta beror på S- orderdesignens stora flexibilitet för att ta hänsyn till små detaljer gällande lastbilens funktionalitet. Dock kan denna konstruktionsflexibilitet leda till flera konfigurationer för en lastbil, vilket innebär att resultaten kommer att variera från produkt till produkt eftersom kunden bestämmer lastbilens specifikationer. Huvudslutsatsen är att det tidiga genomförandet av anpassningar genom S- orderdesign vid utvecklingen av tunga lastbilar hos Scania potentiellt kan minska resursförbrukningen och miljöpåverkan och stöd till hållbar produktion.

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Helleblad, Nymo Carl-Oscar. "Behind the wheel : A closer look at influential relationships among internal factors driving a technological paradigm shift." Thesis, Uppsala universitet, Industriell teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-391521.

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Global sustainability awareness and governmental regulations are pushing the automotive industry into finding alternatives to carbon dioxide emitting products. Solutions utilizing electricity in the vehicle powertrain is overtaking market share from internal combustion engines (ICE). This tendency has spread into the heavy-duty truck segment which poses questions regarding the future of the ICE. An alternative, electric motors, powered with batteries, fuel cells of even ICE’s, is thought to become a core part of future mobility. To mitigate discontinuities during a shift from ICE to electric motors, a study of possible factors affecting such transition has been performed. The result indicates 14 main factors which are thought to have a definite role in a major technology paradigm shift. These factors are: Supplier relations, Material management, Material availability, Available space, Scalability, Product flexibility, Risk management, External resource utilization, Internal relations, Demand estimation, Management endorsement, Appropriate methodology, Employee engagement, and Competence renewal. A structure using ISM methodology is established highlighting the factors’ influencing relation to each other. Anchored in the theory regarding paradigmatic shifts within industry, a tendency of technological, managerial, and institutional influence on organizational change can be discerned where the institutional level poses as the fundamental dimension of derived quality. The factors are identified from a Scania specific case but are broad enough to apply to similar situations facing challenges of a technological paradigm shift.

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Sundkvist, Marie, and Louise Vigmo. "Services through the truck’s lifecycle : A case study of the utilization of Scania’s long-haulage trucks." Thesis, Linköpings universitet, Industriell miljöteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111970.

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Scania is one of the leading manufacturing companies of long-haulage trucks, buses as well as industrial and marine engines. Offering services is becoming increasingly important for Scania, as well as for any other truck OEM company, to stay competitive. Today Scania offers several services connected to the company’s products. The current service portfolio targeting the long-haulage truck is mainly focused on meeting the needs of the first owner of the vehicle. However, the truck goes through different phases during its lifecycle, operating under varying conditions in different businesses. With this in mind, the study aimed at answering the following research questions: RQ1 - What are the characteristics of the phases that a long-haulage truck faces during its lifecycle? RQ2 - How do these phases relate to the nature of the customers’ businesses with their associated challenges, demands and needs? RQ3 - Based on the results of RQ1 and RQ2, what service areas could a long-haulage truck OEM offer their customers? In order to answer RQ1 and RQ2, an internal mapping including interviews with experienced Scania employees, was conducted. This was followed by an external mapping, in which hypotheses generated from the internal mapping were tested through interviews with owners of used long-haulage trucks as well as distributors. Based on the internal and external mapping, development of service areas targeting the later owners of the long-haulage truck’s lifecycle was carried out, including brainstorming sessions and workshops. The result of the study showed that the long-haulage truck’s life is characterized by differences in utilization and not by distinctive owners groups, the phases in the truck’s lifecycle are consequently use phases. When describing the characteristics of the use phases, two parameters primarily define the life of the truck. Firstly, with the truck’s increasing age, the utilization of the truck goes from focusing on logistics to moving things from A to B. Secondly, with increased age, the emphasis on advanced technology shifts to basic technology in regards of the truck’s physical condition as well as the owner’s need and desire for technology. Advanced technology is related to a utilization focus on logistics while basic technology goes hand in hand with moving things from A to B. In addition, the further away in the lifecycle, the focus on delivery precision, need of the business having high use frequency of the used truck, the demand for technically advanced functions, need for vehicle reliability and tendency to turn to OEM for R&M decreases. Furthermore, the further away in the lifecycle and from the starting point Europe, the driver’s level of loyalty towards the business, incentive to use technical devices in driver environment and focus on the driver’s working situation is reduced. Based on above description of the long-haulage truck’s life, a truck OEM company such as Scania can offer services related to R&M, the transition that occurs when the truck is sold or bought, safety and security aspects and driver convenience. The order the services areas are given in is the order the areas are considered to have the most offering potential. Recommendations for future work involve development of the services, which currently are suggestions. To ensure further successful development, additional studies, including quantitative on-site examinations of for example users outside Europe, needs to be carried out.

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Axenholm, Strömberg Niklas, and Leo Verde. "Energy Performance Simulations of a Scania Truck Cabin." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-79127.

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The vast majority of trucks in the European Union are reliant on fossil fuels as their primary mode of propulsion. In efforts to decarbonise the truck transport sector manufacturers are developing electrified trucks. An electrification may serve to reduce the tailpipe emissions of trucks, but it introduces a new challenge to supply the cabin with energy. This energy is primarily used to maintain a comfortable cabin climate for the driver and passenger. In order to maximise the range of an electric truck the cabin energy requirement needs to be minimised. This thesis evaluates the current energy performance of a Scania S20H cabin through experimental testing as well as simulations using the simulation software GT-SUITE. Based on the results from the tests and the models, energy saving concepts were generated and their performance was evaluated. The experimental tests were performed on a truck in a climate chamber where the ambient temperatures, HVAC system fan speeds, air recirculation rate and inlet air temperatures were varied. The test data was used to build a one-dimensional simulation model in GT-ISE as well as a three-dimensional model in GT-TAITherm. The one-dimensional model was calibrated against 10 experimental tests and yielded an average relative error for the chosen temperature calibration parameters between 0.05% and 0.43%. The one-dimensional model showed that the largest energy loss was through air evacuation and air leakage, accounting for 70-90% of the input energy. The structural energy losses were primarily through the windshield and the side windows, accounting for 32% and 23% of the total structural losses respectively. Energy saving concepts in the form of low emissivity window glazing, double pane windows, xenon filled gas panel insulation and low levels of air recirculation were simulated. The best and most plausible combination of the aforementioned concepts yielded an average input energy decrease of 31.6%, air loss decrease of 32.9% and a structural loss decrease of 27.6% compared to the simulated base cases. The three-dimensional model was calibrated against one test case and yielded an average relative error of 0.15% for the chosen temperature calibration parameter. One energy saving concept in the form of double pane side windows in conjunction with low emissivity glazing on all windows was simulated. This concept had a slight impact in raising the average cabin air temperature and the interior surface temperatures of the windows. The surface temperature change resulted in a decrease of cold downdraught from the top roof window and the driver side window. In conclusion, the models work as intended providing a time efficient way of evaluating the energy performance of structural changes. In order to improve the performance, usefulness and accuracy of the models the initial values should be more exact. This can be achieved by standardised testing procedures as well as data collection with wind speed.

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Verde, Leo, and Strömberg Niklas Axenholm. "Energy Performance Simulations of a Scania Truck Cabin." Thesis, Umeå universitet, Institutionen för tillämpad fysik och elektronik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-171413.

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The vast majority of trucks in the European Union are reliant on fossil fuels as their primary mode of propulsion. In efforts to decarbonise the truck transport sector manufacturers are developing electrified trucks. An electrification may serve to reduce the tailpipe emissions of trucks, but it introduces a new challenge to supply the cabin with energy. This energy is primarily used to maintain a comfortable cabin climate for the driver and passenger. In order to maximise the range of an electric truck the cabin energy requirement needs to be minimised. This thesis evaluates the current energy performance of a Scania S20H cabin through experimental testing as well as simulations using the simulation software GT-SUITE. Based on the results from the tests and the models, energy saving concepts were generated and their performance was evaluated. The experimental tests were performed on a truck in a climate chamber where the ambient temperatures, HVAC system fan speeds, air recirculation rate and inlet air temperatures were varied. The test data was used to build a one-dimensional simulation model in GT-ISE as well as a three-dimensional model in GT-TAITherm. The one-dimensional model was calibrated against 10 experimental tests and yielded an average relative error for the chosen temperature calibration parameters between 0.05% and 0.43%. The one-dimensional model showed that the largest energy loss was through air evacuation and air leakage, accounting for 70-90% of the input energy. The structural energy losses were primarily through the windshield and the side windows, accounting for 32% and 23% of the total structural losses respectively. Energy saving concepts in the form of low emissivity window glazing, double pane windows, xenon filled gas panel insulation and low levels of air recirculation were simulated. The best and most plausible combination of the aforementioned concepts yielded an average input energy decrease of 31.6%, air loss decrease of 32.9% and a structural loss decrease of 27.6% compared to the simulated base cases. The three-dimensional model was calibrated against one test case and yielded an average relative error of 0.15% for the chosen temperature calibration parameter. One energy saving concept in the form of double pane side windows in conjunction with low emissivity glazing on all windows was simulated. This concept had a slight impact in raising the average cabin air temperature and the interior surface temperatures of the windows. The surface temperature change resulted in a decrease of cold downdraught from the top roof window and the driver side window. In conclusion, the models work as intended providing a time efficient way of evaluating the energy performance of structural changes. In order to improve the performance, usefulness and accuracy of the models the initial values should be more exact. This can be achieved by standardised testing procedures as well as data collection with wind speed.

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Elmashaad, Farook, and Ammar Abdulmageed. "Konstruktionsåtgärd för lutande bränsletank." Thesis, Blekinge Tekniska Högskola, Institutionen för maskinteknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-20167.

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Bränsle är en viktig substans för fordon och utan bränsle så är de flesta fordon inte funktionella. I de allra flesta instruktionsböcker för fordon så rekommenderas det att bränslet inte får nå en kritisk låg nivå av bränsle. Då man talar om den kritiska bränslenivån så handlar det om ¼ kvarliggande bränsle. Då bränslet når den kritiska nivån i bränsletanken så kan problem ske och dessa problem är direkt kopplade till bränsletanken och pumpen. Syftet med denna kandidat examensarbete är att undersöka problemet och det befintliga bränslesystemets konstruktion för att sedan generera en eller fler lösningar till problemet. Då information för detta arbete är begränsad över nätverket så skedde en del intervjuer med verkstan och fordons företag och fabriker såsom Volvo och Scania för att få en bra mängd information som sedan användes som utgångspunkt till arbetet. För att generera lösningar till problemet med informationen som erhållits av intervjuer och andra källor så användes vissa verktyg och metoder. Då arbetet var begränsad att utföra praktiskt så utfördes den teoretiskt med hjälp av kunskaper från materiallära, hållfasthetsberäkningar, simulations program såsom AutoCAD, NASTRAN, fysik och en mängd andra ingenjörs baserat litteratur för att åstadkomma goda resultat. Resultat blev en enkel konstruktion som är anpassat för tillverkningen av bränsletankar och som både funkar för cylindriska och rektangulära bränsletankar. I denna rapport så presenteras resultatet i form av några förslags modeller av ett koncept som anses vara en lämplig lösning för problemet och resultat utfört med konceptet som då visar att konceptet uppfyller en fungerande lösning för det presenterade problemet. Storlek för konstruktionen presenteras i en form av enkla beräknings steg där man utgår ifrån bränsletanks modellen man vill tillämpa konceptet i. The fuel is an important substance for vehicles and without fuel the most vehicles are not functional. In other words, they cannot move. In all instruction manuals, it is recommended that the fuel should not attain a low level in the fuel tank itself because it could lead to many consequences and these consequences are directly linked to the fuel pump and the engine itself. The purpose of this bachelor's thesis is to investigate the issues and the existing fuel system design, then generate concepts to solve the problem. The information about the problem is limited on the world wide web, therefore we have been in contact with various truck workshops, vehicle companies and been visiting some of them. Volvo and Scania were at the top of the list. The reason was to get good and reliable information about the fuel tanks and then use it as a starting point. Using information from interviews and sources helped very much to generate different concepts and solutions to the problem. Also, some tools and methods were very useful to build, chose and evolve the concepts. Note that some work was not performed practically because of limitations, therefore it was theoretically done with help of knowledge from different courses like materials theory, strength of materials calculations, physics, simulation programs like AutoCAD, NASTRAN and other engineering literature to achieve good results. The result was a simple design adapted for the production of fuel tanks for the manufacture of fuel tanks, which works for both cylindrical and rectangular fuel tanks. In this report, the results are presented in the form of some proposal models and results performed with the concept, which then shows that the concept satisfies a solution to the presented problem. Presentationerna genomfördes på distans med zoom

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Karlqvist, Rasmus. "Hydropneumatic suspension in a truck : Installation of a hydropneumatic suspension for a Scania truck." Thesis, Karlstads universitet, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-78647.

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Investigation and testing of hydropneumatic suspension systems has previously been done at Scania between the year 1992 and 2000. Interest has aroused at Scania CV AB to further test a hydropneumatic suspension. The reason being the new ventures of decarbonised, clean, electrified, automatized and digitalised vehicles. If electrified trucks are to be adopted in the market as an alternative to trucks with combustion engines, solutions for this type of vehicle’s capacity need to be presented. The vehicle’s weight needs to be reduced; the effectiveness of the components needs to be increased and alternatives to increase battery storage needs to arise if it’s going match the traveling distance of a combustion engine. The mission of the project is to present an installation solution of a hydropneumatic suspension that retains the performance of the current air suspension. The presented material will contain CAD-models of all the brackets that will be designed to fit the suspension, as well as the placement in the vehicle assembly for said brackets. The results show that as for the front suspension the best solution is a placement of the hydraulic cylinders in front of the vehicles front axle. Furthermore the rear suspension is best suited for a placement of the hydraulic cylinders behind the vehicles rear axle. However it was concluded that the rear suspension will not be able to retain the current stroke of the vehicle without sacrificing its ground clearance. Parts of the suspension could however be terminated when the air suspension system was replaced by the hydropneumatic system namely: The front suspension anti-roll bar, shock absorbers, air springs and their coexisting brackets.

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Turek, Lukáš. "Ekonomické, provozní a ekologické porovnání nákladních vozidel Scania využívajících různá paliva." Master's thesis, Vysoká škola ekonomická v Praze, 2014. http://www.nusl.cz/ntk/nusl-193235.

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This master work deals with different fuels for trucks Scania and it is divided into theoretical and practical parts. The theoretical part describes the basic concepts related to the topic. The most important are associated with transport and transportation, categorization and types of vehicles, greening road transport or financing. Depending on the practical part it is also place great emphasis on selected types of fuels, their production and also their advantages and disadvantages. In the practical part is introduced Scania company and the products and services that the company offers. Furthermore, this section generally analyzes Scania offer of engines for different types of fuels, including technical recommendations. At the end of the practical part are described specific vehicles, which are compared from financial aspect, in terms of environmental impact and operational limitations. The aim of the study is to compare Scania trucks using diesel, biodiesel and CNG.

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LLORENTE, ANDRÉS. "New concept for the ground connection in Scania’s trucks and buses." Thesis, KTH, Elektroteknisk teori och konstruktion, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-154542.

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Regarding the ground electrical connection in trucks and buses, the requirements of earthing in heavy-duty vehicles were gathered and evaluated. The most important problems in the state-of-the-art grounding devices are corrosion, electrical resistance and uncertainty in the mounting process, altogether with depreciation over time. The goal is to come up with new concepts that can give a more reliable and better ground connection into the frame with faster, easier and safer manufacturing operations. Several methods for attaching different ground connectors to the steel frame are going to be investigated, including bolted connections, press devices, soldering, brazing and local plating spots. It will be shown that the welding operation gives the best electrical results, while lowering mounting costs, time and variability. Two welded connectors are then going to be proposed as the best alternatives and a parallel investigation with both of them is going to be carried out. These new concepts, filed for patent protection, are going to be labelled as “SRM Welded ground stud” and “SRM Welded grounding nut”. The first of them consists of a plated steel threaded stud (M8 or M10) with a ring shaped contact surface built in one of the ends, where the Ø12 mm weld is to be performed onto the uncoated frame. The second concept comprises a stainless steel M10 round nut welded over a punched hole. The optimization will also cover different alternatives for plating metals, contact aid compounds and masking caps for both devices. The risk of mechanical weakening of the frame because of the new welded concepts is going to be tested for the case of the SRM Welded ground stud. The results will show an increase in fatigue resistance of at least 20% compared to the current ground screw. Furthermore, the strength of the welded interface will show higher proof load than the stud itself. The welded nuts, tested with torque loading, will show a sufficient performance as well. The electrical tests present an expected decrease in ground resistance of 40% for the welded stud and an increase of 28% for the welded nuts, compared with the current ground screw. The conclusion of this Master Thesis states the recommendation of the implementation of a new grounding method through the SRM Welded ground stud. Although, some modifications in the transportation process of the frames might be needed because of the new protruding parts, pointing an estimated distance of 20mm from the frame surface. När det gäller jordad elanslutning i lastbilar och bussar, har kraven på jordning i tunga fordon samlats och utvärderats. De största problemen i de mest avancerade jordade enheterna är korrosion, elektriskt motstånd och osäkerhet i monteringsprocessen, sammantaget med avskrivning över tiden. Målet är att utveckla nya koncept som kan ge en bättre och mer tillförlitlig jordanslutning i ramen med snabbare, enklare och säkrare tillverkning. Flera metoder för att fästa olika mark kontakter till stålramen kommer att undersökas, bland annat skruvförband, pressanordning, lödning, hårdlödning och lokala pläteringsfläckar. Det kommer att visa att svetsning ger den bästa elektriska resultatet, samtidigt som monteringskostnader, tid och variabilitet minskar. Två svetsade kontakter kommer sedan att föreslås som de bästa alternativen och en parallell undersökning med dem båda kommer att genomföras. Dessa nya koncept, för vilka patentskydd har ansökts, kommer att märkas som “SRM Svetsade marktapp” och “SRM Svetsade jordmutter”. Den första av dem består av en pläterad stålgängad tapp med en ringformad kontaktyta byggt i en av ändarna, där svetsen skall utföras på den obelagda ramen. Det andra konceptet består av en rostfri rund mutter svetsad över ett stansat hål. Optimeringen kommer även att omfatta olika alternativ för pläterade metaller, kontaktstöds föreningar och maskeringslock för de båda enheterna. Risken för mekanisk försvagning av ramen på grund av det nya svetsade konceptet kommer att testas med avseende på fallet med SRM Svetsad bottenreglar. Resultaten visar en ökad utmattningshållfasthet på minst 20% jämfört med den nuvarande jordskruven. Dessutom kommer styrkan av den svetsade gränsytan uppvisa en högre provbelastning än tappen själv. De svetsade muttrarna, testade med momentbelastning, kommer också uppvisa en tillräcklig prestanda. De elektriska testerna presenterade en förväntad minskning av markmotståndet på 40% för svetsade tappar och en ökning med 28% för svetsade muttrar, jämfört med den nuvarande jordskruven. Slutsatsen av detta examensarbete anger en rekommendation av genomförandet av en ny jordningsmetod genom en SRM Svetsad marktapp. Trots detta kan vissa ändringar behövas i transportprocessen av ramarna på grund av de nya utskjutande delarna, vilka pekar från ramens yta med ett uppskattat avstånd av 20 mm.

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Styfberg, Lundqvist Anna. "Modelling towards a Lean Product Development Process : A Case Study at Scania Customized Truck Development." Thesis, KTH, Industriell produktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-246156.

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The increasing demands on producing products in an effective and resource efficient manner has put more focus on modelling internal processes within organizations. Models of internal processes show what work is to be done and how to do the work in order to get to the desired result. Modelling internal processes is also a way to capture knowledge that by many is seen as the most meaningful resource and valuable asset in today’s organizations. This thesis project has created a model of the project process for customized truck development (s-order) at Scania. The purpose has been to create a model that facilitates the everyday work of the project managers and can be used to improve the process. The goal of this report is to add to the theoretic field of process modelling by focusing on how to use a process model. A qualitative case study was conducted in parallel to a literature study. The result is a model in two layers providing different levels of detail. The model can be used for project planning, project execution, project control and project development the most important part being to create a standardized way of working which is the basis for a lean product development. The process of modelling can in itself generate important insights into a process, the report therefore ends with a discussion on suggestions for improvement of the s-order projects towards becoming a more lean product development process. De ökande kraven på att producera varor på ett effektivt sätt med minskad användning av resurser ställer ökande krav på att modellera interna processer inom företag. Modeller av interna processer visar vad som ska göras i en process och när arbetet ska utföras för att få önskat resultat. Att modeller interna processer är också ett sätt att fånga kunskap som i stor utsträckning ses som den mest värdefulla tillgången i dagens organisationer. Detta projekt arbete har skapat en processmodell över projektprocessen för specialbeställda lastbilar (s-order) på Scania. Syftet har varit att skapa en modell som underlättar i projektledarnas dagliga arbete och som även kan användas som underlag för förbättringar av processen. Målet har varit att addera till det teoretiska fältet för process modellering genom att fokusera på hur modellen kan användas. En kvalitativ fallstudie har utförs parallellt med en litteraturstudie. Resultatet är en process modell i två lager med olika detaljnivå. Modellen kan användas för projektplanering, i utförandet av projekten, som kontroll av projekten och för utveckling av projekt processen, den viktigaste rollen är att en modell skapar basen för ett standardiserat arbetssätt, grunden för lean produktutveckling. Att modellera en process kan ge viktiga insikter i processen, rapporten avslutas därför med en diskussion kring åtgärder för hur s-order processen kan förbättras för att bli en mer lean produktutvecklingsprocess.

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STYFBERG, LUNDQVIST ANNA. "Modelling towards a lean product development process : A case study at Scania customized truck development." Thesis, KTH, Industriell produktion, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-247882.

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The increasing demands on producing products in an effective and resource efficient manner has put more focus on modelling internal processes within organizations. Models of internal processes show what work is to be done and how to do the work in order to get to the desired result. Modelling internal processes is also a way to capture knowledge that by many is seen as the most meaningful resource and valuable asset in today’s organizations. This thesis project has created a model of the project process for customized truck development (s-order) at Scania. The purpose has been to create a model that facilitates the everyday work of the project managers and can be used to improve the process. The goal of this report is to add to the theoretic field of process modelling by focusing on how to use a process model. A qualitative case study was conducted in parallel to a literature study. The result is a model in two layers providing different levels of detail. The model can be used for project planning, project execution, project control and project development the most important part being to create a standardized way of working which is the basis for a lean product development. The process of modelling can in itself generate important insights into a process, the report therefore ends with a discussion on suggestions for improvement of the s-order projects towards becoming a more lean product development process. De ökande kraven på att producera varor på ett effektivt sätt med minskad användning av resurser ställer ökande krav på att modellera interna processer inom företag. Modeller av interna processer visar vad som ska göras i en process och när arbetet ska utföras för att få önskat resultat. Att modeller interna processer är också ett sätt att fånga kunskap som i stor utsträckning ses som den mest värdefulla tillgången i dagens organisationer. Detta projekt arbete har skapat en processmodell över projektprocessen för specialbeställda lastbilar (s-order) på Scania. Syftet har varit att skapa en modell som underlättar i projektledarnas dagliga arbete och som även kan användas som underlag för förbättringar av processen. Målet har varit att addera till det teoretiska fältet för process modellering genom att fokusera på hur modellen kan användas. En kvalitativ fallstudie har utförs parallellt med en litteraturstudie. Resultatet är en process modell i två lager med olika detaljnivå. Modellen kan användas för projektplanering, i utförandet av projekten, som kontroll av projekten och för utveckling av projekt processen, den viktigaste rollen är att en modell skapar basen för ett standardiserat arbetssätt, grunden för lean produktutveckling. Att modellera en process kan ge viktiga insikter i processen, rapporten avslutas därför med en diskussion kring åtgärder för hur s-order processen kan förbättras för att bli en mer lean produktutvecklingsprocess.

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Nikolov, Zhivko. "Effect of upstream turbulence on truck aerodynamics." Thesis, Linköpings universitet, Mekanisk värmeteori och strömningslära, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-138696.

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The aerodynamic team at SCANIA has discovered the need to investigate the effect of the upstream turbulence conditions on the aerodynamics of the trucks. This need comes from the fact that there are differences between the drag coefficients obtained using computational fluid dynamics (CFD) and the on-road measurements. This difference can lead to wrong predictions of fuel consumption and emissions, which can cause incorrect evaluation of design changes. In this study the problem of modeling upstream turbulence in CFD simulations is addressed together with its effect on the aerodynamics of the trucks. To achieve this, representative values of turbulence intensity and length scale were found from the work of different researchers, who performed on-road measurements for various conditions. These values were then used in a method by Jakob Mann to generate a synthetic turbulence field. This field was then used to generate time varying velocity components, added to the mean velocity at the inlet of a CFD simulation. After the implementation of the method it was discovered that the conditions at the test section of the virtual wind tunnel were representative of the on-road measurements. The results showed drag increase and wake length decrease, similar to previous studies performed on simple geometries. It also showed that the higher mixing of the flow increases the drag by surface pressure increase of forward facing surfaces and pressure decrease at the base. These conclusions may be extended to other bluff body geometries and it shows the importance of good design around gaps. The comparison between two truck geometries showed that a truck with better aerodynamics in a smooth flow shows less drag increase with introduction of upstream turbulence.

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Ennerfors, Nils. "Ett telemetrisystem för en turboladdare : Ett examensarbete utfört i samarbete med Scania CV AB." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232693.

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Detta examensarbete har gått ut på att undersöka möjligheten till implementerande av ett trådlöst mätsystem för en turboladdare samt sedan ta fram en basinstallation för det valda systemet. Genom att tillämpa användningen av ett trådlöst mätsystem till Scanias turboaggregat så kan mätvärdena som erhålls användas till fortsatta designförbättringar och verka som en kontroll av Scanias turboleverantörer. Arbetet har behandlat studier i olika trådlösa mätsystem och sedan utse det som passar Scanias turboaggregat bäst, detta blev då telemetrisystemet. Arbetet fortsatte med etablering av kontakt med leverantörer och senare matcha Scanias krav och begränsningar med leverantörens föreslagna system. Arbetet har också hanterat framtagandet utav CADmodeller, ritningar för en monteringslösning till telemetrisystemet. Detta betydde att konstruera inom turboaggregatets begränsningar och driftområden så att monteringslösningen kan hantera de hårda förhållanden systemet kommer utsättas för vid drift. Arbetet resulterade med en framtagen offert och en systembeställning av ett 2 kanalsystem, även framtogs två stycken olika monteringslösningar som kan användas för fästa av telemetrisystemet i turboaggregatet. The aim of this thesis has been to investigate the feasibility of a wireless measurement system for a HD turbocharger, and then implementing a base installation for the selected system. By applying the usage of a wireless measurement system to one of Scania’s turbochargers, the measurement values that obtained can be used for design improvements and as a verifier of Scania’s turbo suppliers. The thesis has covered studies in different wireless measurement system and later choosing one that fits Scania’s turbochargers best, this became the telemetry system. The thesis has also covered the development of CAD-models and drawings for a mounting solution to the telemetry system. This meant designing within the turbochargers design limits and operating areas so that the mounting solution could deal with the harsh condition the system will be exposed to. The thesis resulted in ordering the 2 channel telemetry system and a development of two different mounting solution that can be used to fasten the telemetry system within the turbocharger.

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Sjögren, Daniel, and Liselott Holmstedt. "Scania in the Swedish Truck Market : A study of how themanagement conducts the marketing according to the MarketingMix." Thesis, Mälardalen University, School of Sustainable Development of Society and Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-6653.

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Scania is an old and well established company within itsindustry, thus the company has understood, through experience, that it is simply not enough to be product oriented in the truck industry, instead the company has to focus on what is of value to the customer. To know and understand the customer’s business or area of business is a key success factor which develops trust for the company, this trust and knowledge of the customer’s area of operation is of critical importance during economic slowdowns.

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Osbeck, Emelie, and Nils Åkerman. "Information Hold : Ways of preventing information overload in Scania vehicles in critical traffic situations." Thesis, KTH, Maskinkonstruktion (Inst.), 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-29728.

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De tekniska system som tävlar om förarens uppmärksamhet i bilar och lastbilar ökar både i antal och komplexitet. Detta kanske inte är ett problem på en rak, lugn motorväg men minskar fokus på själva körningen och om något oväntat skulle hända kan konsekvenserna bli allvarliga eftersom föraren är distraherad och kan behöva ta in för mycket information på en gång. Syftet med projektet var att utveckla ett system för att presentera endast relevant och önskad information till förare av lastbilar och bussar i kritiska trafiksituationer. Detta för att göra det möjligt för föraren att fokusera mer på körningen och därigenom göra den säkrare och bekvämare. Å ena sidan ska systemet upptäcka vilken typ av trafiksituation lastbilen befinner sig i. Å andra sidan ska det avgöra vilken typ av information som skulle vara relevant för föraren i den situationen. Med en litteraturstudie, insamlad statistik, intervjuer och författarnas åsikter som grund identifierades ett antal händelser (som telefonsamtal och förekommande varningar) som kan inträffa i förarhytten på en lastbil och hur mycket de vardera skulle öka förarens arbetsbörda (workload). Detsamma gjordes för ett antal vanliga trafiksituationer som kan betraktas som kritiska och kräver mer uppmärksamhet än att bara köra rakt fram. Dessa händelser och situationer betygsattes därefter utifrån hur mycket de skulle öka belastningen på de sinnen som används mest i en körsituation, nämligen: synen, hörseln, motoriken och kognitionen. Matriser gjordes i vilka uppgifter och situationer ställdes mot varje sinne med betyg vilket senare användes som grund för de tre koncept som utvecklades för systemet. Koncepten hette Jigsaw, Fever och Three’s a crowd och utvärderades i en workshop på Scania. De två första realiserades i form av prototyper som gjordes i programmet GUIDE. Logiken som byggdes upp i programmet bestod av tillståndsmaskiner och med boolsk logik samt if- och while-slingor. The technical systems that compete for drivers’ attention in cars and trucks are increasing both in numbers and complexity. This may not be a problem on a straight and sound highway but definitely decreases the focus on the actual driving and if something unexpected was to happen there could be dangerous consequences, due to too much distraction and information overload. The purpose of the project was to develop a system to present only relevant and desired information to drivers of trucks and busses in critical traffic situations, for the Swedish truck manufacturer Scania. This will enable the driver to focus more on the driving thus creating a safer and more comfortable driving situation. On one hand the system had to detect what type of traffic situation the truck is in. On the other hand it had to determine what type of information would be suitable for the driver in that situation. With a literature study, statistics, interviews and the authors’ judgments as a basis the project first identified a number of tasks (like phone calls and occurring warnings) that can take place in the cab of a truck and then assess how much they respectively would raise the workload of the driver. The same was done for a number of common traffic situations that were considered as critical and demanded more attention than just driving straight ahead. All these tasks and situations were graded on how much they would raise the load on the senses most used in a driving situation: visual, auditory, motor and cognitive. Matrices were made cross-referencing the tasks and situations with the grades on each modality and was used as the basis for the three concepts for the system that was developed. The concepts called Jigsaw, Fever and Three’s a crowd were evaluated in a workshop at Scania and the first two were realized in the form of prototypes which were made in the software GUIDE. The logic was made up of state machines and Boolean operators and if- and while-conditions.

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Vaidya, Kapil, and Palau Xavier Navarro. "Coolant Filling Simulation Model in 1D with GT-Suite : A Study on Scania's Electric Truck's Battery Cooling Circuit." Thesis, KTH, Skolan för industriell teknik och management (ITM), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-300372.

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Driven by the goal of decreasing emissions and pollutants towards a more sustainable future, the automotive industry is undergoing a rapid transition towards battery-powered electric vehicles. This shift to sustainable transport is fast-paced, and new technical solutions are being offered on a regular basis to fulfil the future needs for electric vehicles, including battery-electric trucks. This continuously necessitates a fast development of the battery-electric truck, along with the cooling system. To validate the cooling system, Scania's preferred approaches are testing and 3D simulations. However, these approaches are time-consuming and cannot match the pace of the design or the development. This thesis addresses the implementation of using 1D Simulations (GT-Suite) to carry out coolant filling simulations as a more efficient approach by studying the filling of the battery cooling system in an electric truck and, later, validating the results obtained with a test rig. In this thesis, different cases were defined, each adding more complexity to the circuit, and the parameters studied were the filling times and the location of air traps. Finally, a case with a closed circuit and running a coolant pump was developed to study the possibilities of devising quicker deaeration techniques for the circuit. The work completed in this thesis may be used as an example of how filling simulations can be performed with GT-Suite. This thesis is a good starting point, exploring a vast potential in using 1D Simulations to simulate the coolant-air interaction in a cooling system. Nonetheless, the findings revealed that GT-Suite v2020 and v2021 lack a robust model to properly simulate the interaction of coolant and air in certain sections of the circuit. In addition, the simulation model failed to obtain a steady-state solution in some cases resulting in discrepancies between the results from the test rig and the simulations. In conclusion, it was found that 1D simulations are not an ideal way forward when individual components of the cooling circuit are being considered, for example, the cooling plates, but are much quicker and seem to be a promising method to get an overview on a system level. Fordonsindustrin drivs av målet att minska utsläppen och föroreningarna mot en mer hållbar framtid och genomgår en snabb omställning mot batteridrivna elfordon. Övergången till hållbara transporter går snabbt och nya tekniska lösningar erbjuds regelbundet för att möta de framtida behoven av elfordon, inklusive batteridrivna lastbilar. Detta kräver kontinuerligt en snabb utveckling av den batteri-elektriska lastbilen, tillsammans med kylsystemet. För att validera kylsystemet är Scanias föredragna metoder testning och 3D-simuleringar. Dessa tillvägagångssätt är dock tidskrävande och kan inte matcha takten i designen eller utvecklingen. Denna avhandling behandlar implementeringen av att använda 1D-simuleringar (GT-Suite) för att utföra kylvätskefyllningssimuleringar som ett effektivare tillvägagångssätt genom att studera fyllningen av batterikylsystemet i en elektrisk lastbil och senare validera resultaten som erhållits med en testrigg. I denna avhandling definierades olika fall, var och en lägga till mer komplexitet till kretsen, och de undersökta parametrarna var påfyllningstiderna och platsen för luftfällor. Slutligen utvecklades ett fall med en sluten krets och kör en kylvätskepump för att studera möjligheterna att utforma snabbare deaerationstekniker för kretsen. Arbetet i denna avhandling kan användas som ett exempel på hur fyllningssimuleringar kan utföras med GT-Suite. Denna avhandling är en bra utgångspunkt och utforskar en enorm potential i att använda 1D-simuleringar för att simulera kylvätske-luftinteraktionen i ett kylsystem. Resultaten visade dock att GT-Suite v2020 och v2021 saknar en robust modell för att korrekt simulera interaktionen mellan kylvätska och luft i vissa delar av kretsen. Dessutom kunde simuleringsmodellen inte få en steady state-lösning i vissa fall vilket resulterade i skillnader mellan resultaten från testriggen och simuleringarna. Sammanfattningsvis konstaterades det att 1D-simuleringar inte är en idealisk väg framåt när enskilda komponenter i kylkretsen övervägs, till exempel kylplattorna, men är mycket snabbare och verkar vara en lovande metod för att få en översikt på systemnivå.

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Illanes, Christian. "Transport Management Services in C200 web server : An approach to integrate interactive services." Thesis, KTH, Skolan för datavetenskap och kommunikation (CSC), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-169433.

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This report studies the possibility of integrating Transport Management Services (TMS) in a low-cost platform called Communicator 200 (C200). The platform is developed by Scania and is a black box that manages vehicle data, positioning, and wireless communication. The C200’s main purpose is to connect a hauler’s vehicles to their office system via wireless links and Internet. The thesis describes the design and implements a prototype of a service called Messaging that is used to send text messages between truck and office. The prototype is evaluated and tested with different web browsers in various hand-held terminals with different screen sizes. The main conclusion is that it is technically possible to integrate TMS in the C200 without altering the platform architecture too much. Denna rapport undersöker möjligheten att integrera transportledningstjänster i en billig platform kallad Communicator 200 (C200). Platformen är utvecklad av Scania och är en svart låda som hanterar fordonsdata, positionering och trådlös kommunikation. C200 huvudsyfte är att sammankoppla ett åkeris fordon med deras kontorssystem via trådlösa förbindelser och Internet. Rapporten beskriver designen och implementerar en prototyp av en tjänst kallad Messaging som används för att skicka textmeddelanden mellan lastbil och kontor. Prototypen utvärderas och testas mot webbläsare i olika handhållna terminaler med olika skärmstorlekar. Huvudslutsatsen är att det är möjligt att integrera transportledningstjänster i C200 utan att ändra plattformens arkitektur alltför mycket.

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Johansson, Hampus, and Nicklas Höglund. "Weight Estimation through Frequency Analysis." Thesis, Linköping University, Linköping University, Linköping University, Linköping University, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19166.

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The weight of a heavy duty vehicle plays an important role when dealing with different control systems. Examples of control units in a truck that need this parameter are the ones used to control the brakes, the engine and the gearbox. An accurate estimation of the weight leads not only to a more fuel efficient and safer transport, but also assures the driver that current law limits are not exceeded. The weight can be estimated with pretty good accuracy if the truck is equipped with air suspension. In trucks that lack this type of suspension other methods are used to estimate the weight. At present these methods are inaccurate. In this thesis a new method where the weight is to be estimated through frequency analysis of the truck's driveline is developed and evaluated.

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Rosenqvist, Rebecka, and Maria Wikström. "Individualisation of a Driver Coaching Service : Combining Design Ethnography and Service Design to Gain Insights About the Coaches’ Role and Activities." Thesis, Linköpings universitet, Institutionen för datavetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-149647.

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Services surround us every day and companies all over the world have to adapt to the demand of services to make their products more successful and attractive. This master thesis has, on behalf of Scania in Södertälje, Sweden, focused on the service Driver coaching, a service where drivers are dedicated a personal coach who gives regular calls to the drivers. The aim of the thesis was to explore how a driver coaching service could be individualised to each driver. Furthermore, the aim was to develop a design proposal for Driver coaching that creates value for both coaches and drivers. Three coaches from Sweden, Finland and Norway were observed and interviewed to identify what role the coaches have in the service and all the activities they perform. During the analysis of the ethnographic findings, explorations were made on whether valuable insights can be found by interpreting the data with service design visualisations. A customer journey was created which catalysed the analysis phase and helped to generate insights in which pain points could be identified. Three important themes that emerged from the insights were individualisation, trust and communication. Insights from the ethnographic findings and the literature review show that a driver coaching service should, in fact, be individualised. The design proposal that was developed enables different arrangements of the service, which fit each driver’s needs and goals, with the help of a driver profile. Conclusions include information about what is important to think about when designing a driver coaching service that is individualised. Lastly, the thesis contributes to research with lessons learned about how ethnographic data can be used in a generative service design process.

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Moritz, Malte, and Anton Pettersson. "Estimation of Local Map from Radar Data." Thesis, Linköpings universitet, Reglerteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-111916.

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Autonomous features in vehicles is already a big part of the automobile area and now many companies are looking for ways to make vehicles fully autonomous. Autonomous vehicles need to get information about the surrounding environment. The information is extracted from exteroceptive sensors and today vehicles often use laser scanners for this purpose. Laser scanners are very expensive and fragile, it is therefore interesting to investigate if cheaper radar sensors could be used. One big challenge when it comes to autonomous vehicles is to be able to use the exteroceptive sensors and extract a position of the vehicle and at the same time get a map of the environment. The area of Simultaneous Localization and Mapping (SLAM) is a well explored area when using laser scanners but is not that well explored when using radars. It has been investigated if it is possible to use radar sensors on a truck to create a map of the area where the truck drives. The truck has been equipped with ego-motion sensors and radars and the data from them has been fused together to get a position of the truck and to get a map of the surrounding environment, i.e. a SLAM algorithm has been implemented. The map is represented by an Occupancy Grid Map (OGM) which should only consist of static objects. The OGM is updated probabilistically by using a binary Bayes filter. To localize the truck with help of motion sensors an Extended Kalman Filter (EKF) is used together with a map and a scan match method. All these methods are put together to create a SLAM algorithm. A range rate filter method is used to filter out noise and non-static measurements from the radar. The results of this thesis show that it is possible to use radar sensors to create a map of a truck's surroundings. The quality of the map is considered to be good and details such as space between parked trucks, signs and light posts can be distinguished. It has also been proven that methods with low performance on their own can together with other methods work very well in the SLAM algorithm. Overall the SLAM algorithm works well but when driving in unexplored areas with a low number of objects problems with positioning might occur. A real time system has also been implemented and the map can be seen at the same time as the truck is manoeuvred.

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Kleman, Björn, and Henrik Lindgren. "Evaluation of model-based fault diagnosis combining physical insights and neural networks applied to an exhaust gas treatment system case study." Thesis, Linköpings universitet, Fordonssystem, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-176650.

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Fault diagnosis can be used to early detect faults in a technical system, which means that workshop service can be planned before a component is fully degraded. Fault diagnosis helps with avoiding downtime, accidents and can be used to reduce emissions for certain applications. Traditionally, however, diagnosis systems have been designed using ad hoc methods and a lot of system knowledge. Model-based diagnosis is a systematic way of designing diagnosis systems that is modular and offers high performance. A model-based diagnosis system can be designed by making use of mathematical models that are otherwise used for simulation and control applications. A downside of model-based diagnosis is the modeling effort needed when no accurate models are available, which can take a large amount of time. This has motivated the use of data-driven diagnosis. Data-driven methods do not require as much system knowledge and modeling effort though they require large amounts of data and data from faults that can be hard to gather. Hybrid fault diagnosis methods combining models and training data can take advantage of both approaches decreasing the amount of time needed for modeling and does not require data from faults. In this thesis work a combined data-driven and model-based fault diagnosis system has been developed and evaluated for the exhaust treatment system in a heavy-duty diesel engine truck. The diagnosis system combines physical insights and neural networks to detect and isolate faults for the exhaust treatment system. This diagnosis system is compared with another system developed during this thesis using only model-based methods. Experiments have been done by using data from a heavy-duty truck from Scania. The results show the effectiveness of both methods in an industrial setting. It is shown how model-based approaches can be used to improve diagnostic performance. The hybrid method is showed to be an efficient way of developing a diagnosis system. Some downsides are highlighted such as the performance of the system developed using data-driven and model-based methods depending on the quality of the training data. Future work regarding the modularity and transferability of the hybrid method can be done for further evaluation.

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Mustafa, Kobin, and Kristian Rozumberski. "Utveckling av luftkompressormonterad ljuddämpare." Thesis, KTH, Tillämpad maskinteknik (KTH Södertälje), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-232699.

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Ett ljudfenomen som uppstår i samband med luftkomprimeringen i den nya D7 motorn har uppmärksammats som ett problem av kunderna. Ljudfenomenet som resonerar i hytten bidrar till en obehaglig arbetsmiljö. Uppdraget har i sin tur varit att utveckla en luftkompressormonterad ljuddämpare mot en kravspecifikation som eliminerar detta fenomen. Med hjälp av diverse verktyg och en spiral produktutvecklingsprocess utfördes ett flertal iterationer av dem koncept som kan tänkas lösa problemet. Dessa iterationer konstruerades i mjukvaran CATIA V5 för att sedan beställas in som fysiska prototyper i materialet Pa12. För att bekräfta prototypernas funktionalitet utfördes simuleringar samt fysiska tester. Det resulterande arbetet blev ett konceptförslag till Scania CV AB som uppfyller kravspecifikationerna. Lösningens ljuddämpningsförmågan reducerade ljudfenomenet med 73% i genomsnitt. Med hjälp av observationer och analyser under de fysiska testgenomförandet uppmärksammades komplikationer som bör åtgärdas. Det mest kritiska med det nuvarande konceptet är dem vibrationer som uppstår. För att åtgärda detta problem kommer det krävas ytterligare infästningspunkter på motsvarande sida till de nuvarande. All mätdata i denna rapport är modifierat. Detta för att skydda känslig information. A noise phenomenon that arises in connection with air compression in the new D7 engine has been noted as a problem by the customers. The sound phenomenon resonates in the cabin contributes to an unpleasant work environment. The mission, in turn, has been to develop an air compressor-mounted silencer against a requirement specification to eliminate this phenomenon. Using various tools and a spiral product development process, a number of iterations were made of those concepts that could solve the problem. These iterations were engineered in the CATIA V5 software, then ordered as physical prototypes in the material Pa12. To confirm the prototypes' functionality, simulations and physical tests were performed. The resulting work became a concept proposal for Scania CV AB that meets the requirements specifications. The solution managed to reduce the sound phenomenon by 73% on average. With the help of observations and analyzes during the physical test implementation, complications were noted that should be addressed. The most critical on the current concept is the vibration that occurs. To fix this problem additional attachment points will be required on the corresponding side to the current ones. All data in this report have been modified. This is to protect sensitive information.

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Dissertations / Theses on the topic 'Scania trucks'

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