Relevant bibliographies by topics / Common rail direct injection fuel system

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Academic literature on the topic 'Common rail direct injection fuel system'

Author: Grafiati
Published: 4 June 2021
Last updated: 2 February 2022

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Journal articles on the topic "Common rail direct injection fuel system"

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Basavarajappa, D. N., N. R. Banapurmath, S. V. Khandal, and G. Manavendra. "Performance evaluation of common rail direct injection (CRDI) engine fuelled with Uppage Oil Methyl Ester (UOME)." International Journal of Renewable Energy Development 4, no. 1 (February 15, 2015): 1–10. http://dx.doi.org/10.14710/ijred.4.1.1-10.

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For economic and social development of any country energy is one of the most essential requirements. Continuously increasing price of crude petroleum fuels in the present days coupled with alarming emissions and stringent emission regulations has led to growing attention towards use of alternative fuels like vegetable oils, alcoholic and gaseous fuels for diesel engine applications. Use of such fuels can ease the burden on the economy by curtailing the fuel imports. Diesel engines are highly efficient and the main problems associated with them is their high smoke and NOx emissions. Hence there is an urgent need to promote the use of alternative fuels in place of high speed diesel (HSD) as substitute. India has a large agriculture base that can be used as a feed stock to obtain newer fuel which is renewable and sustainable. Accordingly Uppage oil methyl ester (UOME) biodiesel was selected as an alternative fuel. Use of biodiesels in diesel engines fitted with mechanical fuel injection systems has limitation on the injector opening pressure (300 bar). CRDI system can overcome this drawback by injecting fuel at very high pressures (1500-2500 bar) and is most suitable for biodiesel fuels which are high viscous. This paper presents the performance and emission characteristics of a CRDI diesel engine fuelled with UOME biodiesel at different injection timings and injection pressures. From the experimental evidence it was revealed that UOME biodiesel yielded overall better performance with reduced emissions at retarded injection timing of -10° BTDC in CRDI mode of engine operation.
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Senguttuvan, N., S. Raja, and R. Sasidharan. "Selection of alternative material for common rail direct injection system." International Journal of Engineering & Technology 3, no. 2 (April 30, 2014): 230. http://dx.doi.org/10.14419/ijet.v3i2.1810.

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Common rail direct fuel injection is a modern variant of direct fuel injection system for petrol and diesel engines. The common rail system prototype was developed in the late 1960s by Robert Huber of Switzerland and the technology further developed by Dr. Marco. In petrol engine MPFI technology was developed and implemented in earlier days. Basically common rail tube was fabricated by steel for petrol engines. In the current study Steel, Brass, Aluminum alloy a356 and ABS materials were analyzed separately and aluminum is found the best material among the steel, brass and ABS material for common rail injection tube. Keywords: Common Rail Injection System, Alternate Material.
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Teoh, Yew Heng, Heoy Geok How, Ching Guan Peh, Thanh Danh Le, and Huu Tho Nguyen. "Implementation of Common Rail Direct Injection System and Optimization of Fuel Injector Parameters in an Experimental Single-Cylinder Diesel Engine." Processes 8, no. 9 (September 9, 2020): 1122. http://dx.doi.org/10.3390/pr8091122.

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The diesel engine is one of the solutions to slow down fossil fuel depletion due to its high efficiency. However, its high pollutant emission limits its usage in many fields. To improve its efficiency and emissions, a conventional mechanical fuel injection system (MFI) was be replaced with common rail direct injection (CRDI) system for the purpose of this study. In this way, injection parameters such as injection timing, injection pressure and multiple injection schemes can be tuned to enhance the engine performance. The rail pressure and engine speed response of the modified diesel engine was tested. It was found that by advancing the start of injection timing (SOI) timing or increasing the rail pressure, the brake torque generated can be increased. Multiple injection schemes can be implemented to reduce the peak heat release rate (HRR). Post injection was observed to increase the late combustion HRR. The maximum pressure rise rate (PRR) can be reduced by applying pilot injection. Further research was conducted on optimizing fuel injector parameters to improve the indicated mean effective pressure (IMEP) consistency and reduce injector power consumption. The consistency of IMEP was indicated by coefficient of variation (CoV) of IMEP. The injector parameters included open time, low time and duty cycle of injector signals. These parameters were optimized by carrying out response surface methodology. The optimized parameters were observed to be 230 µs for open time, 53µs for low time and 27.5% for duty cycle. The percentage of error of CoV of IMEP and injector power were found to be lower than 5% when the predicted results are compared with experimental results.
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Gupta, Paras, Atul Dhar, and Avinash Agarwal. "Experimental investigations of a single cylinder genset engine with common rail fuel injection system." Thermal Science 18, no. 1 (2014): 249–58. http://dx.doi.org/10.2298/tsci130219083g.

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Performance and emissions characteristics of compression ignition (CI) engines are strongly dependent on quality of fuel injection. In an attempt to improve engine combustion, engine performance and reduce the exhaust emissions from a single cylinder constant speed genset engine, a common rail direct injection (CRDI) fuel injection system was deployed and its injection timings were optimized. Results showed that 34?CA BTDC start of injection (SOI) timings result in lowest brake specific fuel consumption (BSFC) and smoke opacity. Advanced injection timings showed higher cylinder peak pressure, pressure rise rate, and heat release rate due to relatively longer ignition delay experienced.
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Herfatmanesh, Mohammad Reza, Zhijun Peng, Alexis Ihracska, Yuzhen Lin, Lipeng Lu, and Chi Zhang. "Characteristics of pressure wave in common rail fuel injection system of high-speed direct injection diesel engines." Advances in Mechanical Engineering 8, no. 5 (May 2016): 168781401664824. http://dx.doi.org/10.1177/1687814016648246.

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Benajes, J., R. Payri, S. Molina, and V. Soare. "Investigation of the Influence of Injection Rate Shaping on the Spray Characteristics in a Diesel Common Rail System Equipped with a Piston Amplifier." Journal of Fluids Engineering 127, no. 6 (July 27, 2005): 1102–10. http://dx.doi.org/10.1115/1.2062767.

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The quality of the mixing process of fuel and air in a direct injection diesel engine relies heavily on the way the spray develops when injected into the combustion chamber. Among other factors, the spray development depends on the injection rate of the fuel delivered by the injector. The paper presents a study, at both a macroscopic and microscopic level, of a Diesel spray generated by a common-rail injection system featuring a piston pressure amplifier. By modifying the timing and the duration of the injector and amplifier piston actuation, it is possible to obtain high injection pressures up to 180MPa, and different shapes for the injection rate, which would not be achievable with a regular common rail injection system. The spray evolution produced by three different injection rate shapes (square, ramp, and boot) has been investigated in an injection test rig, by means of visualization and PDPA techniques, at different injection conditions. The main conclusions are the important effect on spray penetration of the initial injection rate evolution and the small influence of the maximum injection pressure attained at the end of the injection event. Smaller or even negligible effects have been found on the spray cone angle and on the droplet Sauter mean diameter.
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Lee, T., and R. D. Reitz. "Response Surface Method Optimization of a High-Speed Direct-Injection Diesel Engine Equipped With a Common Rail Injection System." Journal of Engineering for Gas Turbines and Power 125, no. 2 (April 1, 2003): 541–46. http://dx.doi.org/10.1115/1.1559900.

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To overcome the tradeoff between NOx and particulate emissions for future diesel vehicles and engines it is necessary to seek methods to lower pollutant emissions. The desired simultaneous improvement in fuel efficiency for future DI diesels is also a difficult challenge due to the combustion modifications that will be required to meet the exhaust emission mandates. This study demonstrates the emission reduction capability of EGR and other parameters on a high-speed direct-injection (HSDI) diesel engine equipped with a common rail injection system using an RSM optimization method. Engine testing was done at 1757 rev/min, 45% load. The variables used in the optimization process included injection pressure, boost pressure, injection timing, and EGR rate. RSM optimization led engine operating parameters to reach a low-temperature and premixed combustion regime called the MK combustion region, and resulted in simultaneous reductions in NOx and particulate emissions without sacrificing fuel efficiency. It was shown that RSM optimization is an effective and powerful tool for realizing the full advantages of the combined effects of combustion control techniques by optimizing their parameters. It was also shown that through a close observation of optimization processes, a more thorough understanding of HSDI diesel combustion can be provided.
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Yang, Seomoon, and Changhee Lee. "EFFECT OF PILOT INJECTION OF DIMETHYL ETHER DIRECT-INJECTION ENGINE ON PERFORMANCE AND EMISSION CHARACTERISTICS USING COMMON RAIL FUEL INJECTION SYSTEM." JP Journal of Heat and Mass Transfer 16, no. 2 (April 1, 2019): 283–95. http://dx.doi.org/10.17654/hm016020283.

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Su, W. H., T. J. Lin, H. Zhao, and Y. Q. Pei. "Research and development of an advanced combustion system for the direct injection diesel engine." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 2 (February 1, 2005): 241–52. http://dx.doi.org/10.1243/095440705x6604.

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In order to obtain a simultaneous reduction in both NOx and particulate emissions from a direct injection (DI) diesel engine, an advanced combustion system has been researched and developed in the authors' laboratory. The new combustion system comprises homogeneous charge compression ignition (HCCI) combustion at low load by early and multiple injections, combined HCCI, and lean diffusion burning at medium and higher load conditions by means of a novel combustion chamber design and multiple injections. In this paper, the research and development of the enhanced mixing by means of a raised round object (referred to in this paper as BUMP) and its application to a diesel combustion chamber design is described. Then the experimental results from a DI diesel engine equipped with a multiple injection common rail (CR) fuel injection system and the new combustion chamber design will be presented and discussed. Engine testing has shown that the BUMP combustion chamber was very effective in reducing both NOx and smoke emissions. HCCI combustion by means of multiple injections leads to extremely low NOx emissions under low load operations. At medium and higher load operation conditions, quasi HCCI combustion combined with the BUMP combustion chamber could signficantly reduce NOx emissions without sacrificing particulate emission and fuel consumption.
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Zhu, Y., H. Zhao, and N. Ladommatos. "Computational fluid dynamics study of the effects of the re-entrant lip shape and toroidal radii of piston bowl on a high-speed direct-injection diesel engine's performance and emissions." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 219, no. 8 (August 1, 2005): 1011–23. http://dx.doi.org/10.1243/095440705x34649.

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The piston bowl design is one of the most important factors that affect the air-fuel mixing and the subsequent combustion and pollutant formation processes in a direct-injection diesel engine. The bowl geometry and dimensions, such as the pip region, bowl lip area, and toroidal radius, are all known to have an effect on the in-cylinder mixing and combustion process. In order to understand better the effect of re-entrant geometry, three piston bowls with different toroidal radii and lip shapes were investigated using computational fluid dynamics engine modelling. KIVA3V with improved submodels was used to model the in-cylinder flows and combustion process, and it was validated on a high-speed direct-injection engine with a second-generation common-rail fuel injection system. The engine's performance, in-cylinder flow, and combustion, and emission characteristics were analysed at maximum power and maximum torque conditions and at part-load operating conditions. Three injector protrusions and injection timings were investigated at full-load and part-load conditions.
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Dissertations / Theses on the topic "Common rail direct injection fuel system"

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Källkvist, Kurt. "Fuel Pressure Modelling in a Common-Rail Direct Injection System." Thesis, Linköpings universitet, Fordonssystem, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-70264.

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The fuel pressure is one of the central control variables of a modern common-rail injection system. It influences the generation of nitrous oxide and particulate matter emissions, the brake specific fuel consumption of the engine and the power consumption of the fuel pump. Accurate control of the fuel pressure and reliable diagnostics of the fuel system are therefore crucial components of the engine management system. In order to develop for example control or diagnostics algorithms and aid in the understanding of how hardware changes affect the system, a simulation model of the system is desirable.  A Simulink model of the XPI (Xtra high Pressure Injection) system developed by Scania and Cummins is developed. Unlike the previous models of the system available, the new model is geared towards fast simulations by modelling only the mean flow and pressure characteristics of the system, instead of the momentary flow and pressure variations as the engine rotates. The model is built using a modular approach where each module represents a physical component of the system. The modules themselves are based to a large extent on the physical properties of the components involved, making the model of the system adaptable to different hardware configurations whilst also being easy to understand and modify.
Bränsletrycket är en av de centrala styrvariablerna i ett modernt common-rail insprutningssystem. Det påverkar utsläppen av kväveoxider och partiklar, motorns specifika bränsleförbrukning och bränslepumpens effektförbrukning. Nogrann reglering och tillförlitliga diagnoser av bränslesystemet är därför mycket viktiga funktioner i motorstyrsystemet. Som ett hjälpmedel vid utveckling av dessa algoritmer samt för att öka förståelsen för hur hårdvaruförändringar påverkar systemet är det önskvärt med en simuleringsmodel av bränslesystemet.  En Simulink modell av XPI (Xtra high Pressure Injection) systemet som utvecklats av Scania och Cummins har utvecklats. Till skillnad från de redan tillgängliga modellerna av systemet fokuserar denna modell på snabba simuleringsförlopp genom att enbart modellera medeltryck och medelflöden istället för de momentana trycken och flödena i systemet när motorn roterar. Modellen är uppbyggd av moduler som var och en representerar en fysisk komponent i systemet. Modulerna är mestadels uppbyggda kring de fysikaliska egenskaperna hos komponenten de försöker modellera vilket gör modellen av systemet anpassningsbar till olika hårdvarukonfigurationer och samtidigt lätt att förstå.
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Pettersson, Eric. "Modelling of high-pressure fuel system for controller development." Thesis, Uppsala universitet, Avdelningen för beräkningsvetenskap, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-386130.

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This master thesis treats the modelling of a common-rail direct fuel injection system where pressure generation is decoupled from the injection process. It has been shown that the fuel pressure plays a vital role for the general performance of the engine, affecting both emissions and efficiency, and it is carefully regulated to achieve optimal performance at different operating points. In an attempt to facilitate the development of the responsible control algorithms, a simulation framework has been requested. A model describing the complete work cycle of the high-pressure fuel system is developed and implemented in a Simulink environment. It is to a large extent based on the underlying physics and constructed in a modular manner, which allows for different engine configurations to be simulated. The modelled pressure signal is compared to experimental data at different operating points with promising results in capturing the transient behaviour from a low-level perspective. Additionally, it manages to replicate some of the pressure oscillations which has been observed in the real system and it shows good response to changes in the input signals. However, there are some areas which are subject to improvement since capturing the static pressure levels over longer drive cycles has proved to be a difficult task. Overall, the developed model serves as a starting point for future development and validation of control algorithms.
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Glaad, Gustaf. "Pressurizing of high-pressure fuel system forsingle cylinder test cell." Thesis, Karlstads universitet, Institutionen för ingenjörsvetenskap och fysik (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74432.

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This master thesis covers the development of a high-pressure fuel system for compression ignitedfuels such as diesel and diesel-like fuels that will be deployed into a single cylinder test cell at AVLMTC Södertälje, Sweden. The test cell is used by AVL to conduct research and testing of new fuelsfor their customers and this new fuel system will widen the span of fuels able to be tested by theequipment.This thesis focuses on pumping and pressurizing of the fuel, ensuring that all ingoing materialsare non-corrosive in this environment and compatible with the necessary fuels and lastly a safetyanalysis of the system with respect to operator and process safety. Other aspects of the projectsuch as mass flow measurements and fuel conditioning is covered in a sister thesis Mass flowrate measurement of compression ignition fuels in high-pressure stand-alone pump unit for singlecylinder test cell written by C. Aksoy [1].The goal of this thesis project was to deliver a finished manufactured fuel system and if the timeallowed for it, also validate its performance and finally installing and incorporating it into the singlecylinder test cell. The development process started with the writing of a product specificationoutlining the requirements and request on the product in a specification of requirements matrix andrelate these to product properties of the system using a quality function deployment (QFD) matrix.This document was then used as a base for further advancement in developing concepts to solveeach product property and weighing these concepts against each other using Pugh’s matrices. Thechosen concepts were then further developed, a flow chart for the system was developed as well asfuel lines and other supporting components were analyzed and chosen.In the end the high-pressure fuel pump from Scania’s XPI fuel system were chosen as well asa pressure transducer in the HP1000 series from ESI. Within the time frame of this thesis, theproject did not end up getting finished to the degree planned, but due to time constraints werehalted before starting manufacturing of the system. Some minor component choices remained aswell as documentation such as drawings and finalizing the physical layout of the system remained.All information regarding the remaining work needed to finalize the project and deploying thesystem in the test cell were outlined and with more time, the fuel system should fulfill its purposeof allowing testing and research of compression ignited fuel to be possible in the test cell.
Kontentan för denna mastersavhandling är utvecklingsprocessen för ett högtrycksbränslesystemför kompressionsbränslen såsom diesel och diesellika bränslen som kommer att installeras i enencylindertestcell hos AVL MTC Södertälje, Sverige. Testcellen används av AVL för forskningoch testning av nya bränslen åt deras kunder och detta nya bränslesystem kommer att utöka typernaav bränslen som kan testas med utrustningen till att inkludera kompressionsantända bränslen.Denna avhandling fokuserar på utvecklingen av tillförseln och trycksättnigen av bränslet, säkerställnigenav att ingående material är icke-korrosiva i den avsedda miljön och kompatibla med allanödvändiga bränsletyper och slutligen en säkerhetsanalys av systemet med avseende på operatörsochprocessäkerhet. Andra aspekter såsom massflödesmätning och bränslekonditionering presenterasi systeravhandlingen Flödesmätning och konditionering av högtryckantända bränslen för encylindertestcellskriven av C. Aksoy [1].Målet med denna avhandling var att leverera ett färdigtillverkad bränslesystem och om tiden tillät,även validera systemets prestanda och slutligen integrera och installera systemet i testcellen. Utvecklingsprocesseninleddes med att skriva en produktspecifikation som innehöll en sammanställningav kundens krav och önskemål för produkten och relaterade dessa till produktegenskaper med hjälpav en quality function deployment (QFD) matris. Detta dokument användes vidare som en bas förfortsatt utveckling av produkten i konceptgenereringsprocessen och för att väga de olika konceptenmot varandra med hjälp av Pugh’s matriser. De valda koncepten blev sedan analyserade ytterligare,ett flödesschema för de ingående komponenterna framtaget och övriga sekundära komponenteranalyserade och valda.Till slut valdes högtrycksbränslepumpen från Scanias XPI system och en tryckgivare från HP1000-serien från ESI. Inom tidsramen för avhandlingen färdigställdes aldrig projektet till den grad somhade planerats, men blev istället avbrutet innan tillverkningen av systemet han påbörjas på grund avtidsbegränsningar. Vissa sekundära komponentval, dokumentation såsom ritningar och färdigställningav den fysiska layouten av systemet kvarstod vid avhandlingens slut. All information angåendeallt nödvändigt fortsatt arbete för att färdigställa projektet och integrera systemet i encylindertestcellendokumenterades och med mer tid borde bränslesystemet kunna uppfylla sitt syfte att möjliggöratestning och forskning av kompressionsbränslen i testcellen.
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Cross, Brenainn A. "An investigation into the effects of diesel fuel properties on the injection characteristics of a common rail injection system." Master's thesis, University of Cape Town, 2012. http://hdl.handle.net/11427/11990.

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This study set out to investigate the effects of diesel fuel properties on the behaviour of a common rail fuel injection system, with particular emphasis on the injection rate shape characteristics. The investigation included the design and commissioning of experimental equipment for the measurement of fuel properties at typical common rail pressures, as well as the measurement of instantaneous fuel flow rate by a modified Bosch Indicator method. Data was then collected for two different diesel fuels, operating in two different fuel injector designs. The two fuels were EN590 (a European reference fuel) and GTL (a fuel derived from natural gas). The two injectors were a Bosch solenoid type injector, and a Bosch piezo type injector.
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Andrén, Filip, and Olav Borgström. "Common Rail - En bränslebesparingsstudie : – En utvärdering av ett nyinstallerat bränsleinsprutningssystem på isbrytaren Ymer." Thesis, Linnéuniversitetet, Sjöfartshögskolan (SJÖ), 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-50558.

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Följande studie är gjord på uppdrag av Sjöfartsverket. I studien undersöktes hur en installation av ett Common Rail-system ombord på isbrytaren Ymer påverkat bränsleförbrukningen samt utsläppen av kväveoxider. Rådata som loggats ombord på Ymer har analyserat och bearbetat. Material och information från tillverkare, besättning samt teknisk chef på Sjöfartsverket, Albert Hagander har använts under studien. Tillsammans med uppmätta mätdata och tidigare gjord litteraturstudie stöds resultaten i studien. Det är ingen slump att system av Common Rail-typ redan är tillämpat inom de flesta branscher så som transport, personbilsindustri och jordbruk. Huvudsyftet med Common Rail är att minska bränsleåtgången samt minska utsläppen genom en renare och mer effektiv förbränning av bränslet.  Huvudsakligen undersöktes hur det nyinstallerade systemet påverkat bränsleförbrukningen och hur bränslebesparingen varierar med belastningen av maskinen. Vidare granskades hur utsläppen av kvävedioxider påverkats efter installationen. Problematiken med ökad NOx-produktion till följd av en högre förbränningstemperatur som Common Railsystemet medför diskuteras i rapporten. De resultat vi kommit fram till att en bränslebesparing kan göras ombord på Ymer genom att ersätta det gamla bränslesystemet med ett bränslesystem av Common Rail-typ. Vidare har installationen medfört andra förbättringar så som fartygsmaskinens reaktion på de många lastväxlingar som förekommer under isbrytning.
The following study has been carried out on behalf of Sjöfartsverket. The study examines how the installation of a common rail system on board the icebreaker Ymer affected fuel consumption and emissions of nitrogen oxides. The raw data logged on board Ymer was analyzed and processed. Materials and information from manufacturers, crew and the technical manager at the Swedish Maritime Administration, Albert Hagander have been used during the study. Together with measured data and previously made research study the findings of the study are supported. It is no coincidence that the system of the common rail type is already applied in most industries such as transport, car industry and agriculture. The main purpose of the Common Rail is to reduce fuel consumption and reduce emissions through cleaner and more efficient combustion of the fuel. We primarily examined how the newly installed system affected fuel consumption and the fuel savings will vary with the load of the machine. Furthermore, we examined how emissions of nitrogen oxides were affected after installation. The problem of increased NOx production due to a higher combustion temperature as the common rail system entails are discussed in the report. The result that was concluded was that fuel savings can be made on board Ymer by replacing the old fuel system with a common rail fuel type. Furthermore, the installation has brought other improvements such as ship machine's reaction to the many load changes that occur during icebreaking.
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Strouhal, Pavel. "Aplikace vysokotlakého palivového systému na vznětový motor." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2016. http://www.nusl.cz/ntk/nusl-254441.

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This diploma thesis is focused on examining the development of a diesel tractor engine with a newer injection system, concretely common-rail system. Mainly it is about the application of the high pressure fuel pump, fuel rail and injectors. With regard to the used components are appropriate adjustments made on the engine, and then checked using the available calculations. Brief mention is given to the theoretical summary of the contemporary state of applied injection system and its development trend. Selecting adjustments is primarily based on observed operating load. However, it is also striving to their simplest implementation. An integral part of this work is drawing documentation of newly designed components.
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PAN, HSIEN TE, and 潘顯德. "Study of Common Rail High Pressure Fuel Injection System for Large Marine Diesel Engine." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/00825578235732651523.

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碩士
國立高雄海洋科技大學
輪機工程研究所
104
In response to increasingly tough international environmental regulations and rising oil prices, the development of marine diesel engines, worth exploring in depth for. At present the mainframe manufacturers are mustering their efforts to develop high-performance fuel-efficient, saving energy and environmentally friendly hosts. The heart is the host of the high-pressure fuel injection system, fuel injection performance upgrade if the better to promote as much as possible to achieve complete combustion of fuel, so that more output horsepower can save fuel and reduce pollution of its ultimate goal. The diesel engine fuel injection after the high-pressure pump to generate sufficient pressure fuel injection pressure to the cylinder, either double or oil-type injection pump injection pressure, injection amount and injection timing by the fuel injection pump are the control, fuel pressurized by each line to the injection nozzle, and the high-pressure injection pump is a mechanical action, so that is a period of time after the parts wear out, thereby affecting the injection timing, injection pressure and injection quantity, to solve this problem, and ultimately the formation to produce high-pressure common-rail fuel injection system, the type of engine operating mode to a computer to be monitored, so the timing, injection quantity and the injection pressure can be controlled in a jet full domain of the most appropriate, complete combustion and reduce emissions, the province in order to achieve the advantages of oil and improve the performance of the engine. Marine diesel power after years of fierce competition in the shipping market, and gradually form a MAN B & W (the electronic control type of high-pressure fuel injection system) and Wärtsilä-Sulzer (RT-flex), led by two world-renowned brands. This paper will examine the highest market share of these two marine main factory, how to improve the combustion efficiency of energy-saving win performance through high-pressure common rail fuel injection system.
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ŠINDELÁŘ, Jan. "Posouzení provozu motorových vozidel se vznětovými motory využívajícími systém přímého vstřikování paliva Common-Rail." Master's thesis, 2015. http://www.nusl.cz/ntk/nusl-203321.

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This diploma thesis deals with the Common-Rail fuel system. The aim of this work is to develop an overview of development of the fuel-injection system. The first part is devoted to the description of the selected fuel system. All the parts of the system are described and explained there. Also the explanation of the management of the injection is included. Subsequently, other variants of the fuel system are described here. Further parts focuse on the diagnostic instruments and measuring emissions, also operational materials are described and divided in there. The last part of the thesis is devoted to the economic calculations which were made from the perspective of the economy operation of motor vehicles. The work also includes an evaluation of the measurements results and determines the appropriateness of the use of the Common-Rail fuel system for vehicles.
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Dung, Bo-Sen, and 董柏森. "System Identification Study of the Multiple Injection System Parameters Effects on Combustion Cylinder Pressure Prediction of a Multi-Cylinder Four-Stroke Direct Injection Common Rail Diesel Engine." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/48293135321861392994.

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碩士
大葉大學
機械與自動化工程學系
101
The purpose of this study is to apply different system identification methods on the multiple injection system parameters effects to combustion cylinder pressure prediction of a multi-cylinder four-stroke Direct Injection Common Rail (DICR) diesel engine. The engine combustion pressure and performances under different operating conditions affected by the engine fuel injection control parameters were recorded. The system identification simulation analysis output the engine system response transfer function and used for multiple injection condition to predict the corresponding engine combustion pressure.. The fuel injection nozzle solenoid’s current signals are inputs, whereas the corresponding engine combustion pressure signals at the same crank angle recorded by combustion analyzer as the outputs. The single impulse-like injection signal is used to produce the system Impulse Response Function (IRF), then, the system response of combustion pressure can be predicted by using different injection signals and IRF. Different system identification methods, such as Auto-Regression model (ARX), Auto-Regressive Moving Average model (ARMAX), Output Error method (OE), Box-Jenkins method (BJ) were used to find the corresponding predicted combustion pressure transfer function of the system. DICR diesel engine system identification experiments were conducted for three different speed : 1500rpm, 2000rpm, 2500rpm under different loads : 60 Nm、80 Nm、100 Nm for both single and double injection control conditions. Observation and comparison in a variety of engine operating condition’s experimental data with the results of simulated various system identification methods can be useful to verify the correctness of the model combustion pressure prediction. Using system identification, one can quickly identify the predictive model of combustion pressure system transfer function, the resulting combustion pressure prediction model can be applied to DICR diesel engine tuning for control and engine research and development reference.
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Books on the topic "Common rail direct injection fuel system"

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Diesel Fuel-injection System Common Rail: Bosch Technical Instruction. Robert Bosch GmbH, 2005.

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GmbH, Robert Bosch. Diesel Accumulator Fuel-Injection System Common Rail: Technical Instruction (Bosch Technical Library). Robert Bosch GmbH, 2000.

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A Common Rail System For Gdi Engines Modelling And Control. Springer, 2012.

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Book chapters on the topic "Common rail direct injection fuel system"

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Fiengo, Giovanni, Alessandro di Gaeta, Angelo Palladino, and Veniero Giglio. "Synthesis and Experimental Validation of a Fuel Injection Pressure Controller in a Common Rail System." In Common Rail System for GDI Engines, 57–78. London: Springer London, 2012. http://dx.doi.org/10.1007/978-1-4471-4468-7_4.

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Weiskirch, Christian, W. Gotre, B. Röthlein, and R. Rothenaicher. "The development of the common rail fuel injection system – A brief view in the mirror on ups and downs." In 17. Internationales Stuttgarter Symposium, 1347–69. Wiesbaden: Springer Fachmedien Wiesbaden, 2017. http://dx.doi.org/10.1007/978-3-658-16988-6_102.

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Altmann, Robert, Jürgen Gebhard, Adrian Troeger, Markus Winkler, Georg Töpfer, Edgar Remmele, Matthias Gaderer, and Hans-Peter Rabl. "Engine performance and emission analysis of a NRMM CI engine with common rail injection system operated with diesel fuel and rapeseed oil fuel." In Proceedings, 231–42. Wiesbaden: Springer Fachmedien Wiesbaden, 2021. http://dx.doi.org/10.1007/978-3-658-29717-6_16.

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4

"Common Rail System Simulation and Overall Design Technology." In Common Rail Fuel Injection Technology in Diesel Engines, 15–42. Singapore: John Wiley & Sons Singapore Pte. Ltd, 2019. http://dx.doi.org/10.1002/9781119107255.ch2.

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"Development of the Dual Pressure Common Rail System." In Common Rail Fuel Injection Technology in Diesel Engines, 293–341. Singapore: John Wiley & Sons Singapore Pte. Ltd, 2019. http://dx.doi.org/10.1002/9781119107255.ch7.

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6

Phan, V. Quan, and H. Dang Tran. "Study on Applying Numeric Modeling CFD for Fuel Injection Process of Common Rail System in Marine Diesel Engine." In Advances in Marine Navigation and Safety of Sea Transportation, 129–34. CRC Press, 2019. http://dx.doi.org/10.1201/9780429341939-19.

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Conference papers on the topic "Common rail direct injection fuel system"

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Gao, Tongyang, Kelvin Xie, Shui Yu, Xiaoye Han, Meiping Wang, and Ming Zheng. "Characterization of N-Butanol High Pressure Injection From Modern Common Rail Injection System." In ASME 2015 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/icef2015-1129.

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Increasing attention has being paid to alternative fuels that have the potential to reduce overall greenhouse gas emissions and fossil fuel dependence. The alcohol fuel n-butanol, as one of the advanced biofuels, can be potentially utilized as a partial or complete substitute for the diesel fuel in diesel engines. Experimental results from literature, as well as from the authors’ previous research, have shown promising trend of low soot and nitrogen oxides emissions from the combustion with n-butanol high pressure direct injection. However, due to the significant fuel property differences between n-butanol and diesel, the fuel delivery mechanism and combustion control algorithm need to be optimized for n-butanol use. A better understanding of the high pressure n-butanol injection characteristics, such as the injector opening/closing delays and spray droplet sizes, can provide the guidance for the control optimization and insights to the empirical observations of engine combustion and emissions. Meanwhile, the experimental data could be used for the model development of the n-butanol high pressure fuel injection events. In this work, injection rate measurement, high-speed video direct imaging, and phase Doppler anemometry (PDA) analysis of neat n-butanol and diesel fuel have been conducted with a light-duty high pressure common-rail fuel injection system. The injection rate measurement was performed with an offline injection rate analyzer at 20 bar backpressure to obtain the key parameters of the injector opening/closing delays, and the instantaneous pressure rise. The spray direct imaging was carried out in a pressurized chamber, and the PDA measurement was conducted on a test bench at ambient temperature and pressure. The injector dynamics and spray behavior with respect to the different fuels, variation of injection pressures, and variation of injection durations are discussed.
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Suh, Hyun Kyu, Hyun Gu Rho, and Chang Sik Lee. "Spray and Combustion Characteristics of Biodiesel Fuel in a Direct Injection Common-Rail Diesel Engine." In ASME/IEEE 2007 Joint Rail Conference and Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/jrc/ice2007-40082.

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The aim of this work is to investigate the effect of mixing ratio and pilot injection on spray and combustion characteristics of biodiesel fuel and compared with those of diesel fuel in a direct injection common-rail diesel engine. In order to study the influence factors of biodiesel fuel on the spray and combustion characteristics, the experiments were conducted at various mixing ratios and injection conditions of the biodiesel and engine operating conditions. The macroscopic and microscopic characteristics such as injection rate, split injection effect, spray tip penetration, droplet diameter, and axial velocity distribution of biodiesel fuel were compared with the results of conventional diesel fuel by using spray visualization system composed of Ar-ion laser, ICCD camera and phase Doppler particle analyzer (PDPA) system. The combustion and exhaust emission characteristics of biodiesel fuel were studies using common-rail diesel engine with four cylinders. For the biodiesel blended fuel, it was revealed that higher injection pressure is needed to achieve the same injection rate at the higher mixing ratio. The spray tip penetration of biodiesel fuel was much the same with those of diesel. The atomization characteristics of biodiesel were inferior to conventional diesel fuel due to high viscosity and surface tension. The peak combustion pressures of both fuels were increased with advanced injection timing and the combustion pressure of biodiesel fuel is higher than that of diesel fuel. As the pilot injection timing is advanced to the TDC, the dissimilarities of both fuels combustion pressure are reduced. It can be also founded that the pilot injection can enhance the deteriorated spray and combustion characteristics of biodiesel fuel caused by physical fuel properties.
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Lee, Taewon, and Rolf D. Reitz. "Response Surface Method Optimization of a HSDI Diesel Engine Equipped With a Common Rail Injection System." In ASME 2001 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-ice-401.

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Abstract To overcome the trade-off between NOx and particulate emissions for future diesel vehicles and engines it is necessary to seek methods to lower pollutant emissions. The desired simultaneous improvement in fuel efficiency for future DI diesels is also a difficult challenge due to the combustion modifications that will be required to meet the exhaust emission mandates. This study demonstrates the emission reduction capability of EGR and other parameters on a High Speed Direct Injection (HSDI) diesel engine equipped with a common rail injection system using an RSM optimization method. Engine testing was done at 1757 rev/min, 45% load. The variables used in the optimization process included injection pressure, boost pressure, injection timing, and EGR rate. RSM optimization led engine operating parameters to reach a low-temperature and premixed combustion regime called the MK combustion region, and resulted in simultaneous reductions in NOx and particulate emissions without sacrificing fuel efficiency. It was shown that RSM optimization is an effective and powerful tool for realizing the full advantages of the combined effects of combustion control techniques by optimizing their parameters. It was also shown that through a close observation of optimization processes, a more thorough understanding of HSDI diesel combustion can be provided.
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Bae, Choongsik, Jinsuk Kang, and Hang-Kyung Lee. "Diesel Spray Development From VCO Nozzles With Common-Rail." In ASME 2001 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/2001-ice-396.

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Abstract Spray characteristics of diesel fuel injection system is one of the most important factors in diesel combustion and pollutant emissions especially in HSDI (High Speed Direct Injection) diesel engines where the interval between the onset of combustion and the evaporation of atomized fuel is relatively short. An investigation into various spray characteristics from different holes of VCO (Valve Covered Orifice) nozzles was performed. The global characteristics of spray, including spray angle, spray tip penetration, and spray pattern were measured from the spray images, which were frozen by an instantaneous photography with a spark light source and ICCD. These spray images were acquired sequentially from the first injection to fifth injection to investigate injection-to-injection variation. For better understanding of spray development and their internal structures, a long-distance microscope was used to get magnified spray images at the vicinity of the nozzle hole with a laser sheet illumination. Also backward illuminated images with a spark light source were taken at various points of the spray field including vicinity of the nozzle hole to understand surface structures and breakup process of dense spray from VCO nozzle incorporated with common-rail injection system. As injection pressure increases interaction between spray and ambient air becomes important to liquid penetration and spray angle. Macroscopic spray angle increases due to air entrainment as injection pressure increases though spray angle near the hole seems independent from injection pressure. Liquid penetration is initially affected by injection rate increase as needle is moving upward and liquid penetration increase rate is in accordance with injection pressure. After this stage, air entrainment and high potential of evaporation makes the increase rate slower and this tendency is more obvious for higher injection pressure. Microscopic images taken at the vicinity of the nozzle hole exit reveal that central dense region consists of thick ligaments or membranes and most of the liquid droplets are formed at the tip of ligaments from spray surface due to the waves developed on it. Some smaller liquid droplets seem to be generated from the bubble or membrane breakup process. Droplet sizing was performed from the microscopic images, which were frozen by spark light source that has light duration of 10ns and high-resolution CCD camera equipped with long distance microscope whose magnification factor is more than six. Fuel particle sizes, described as SMD (Sauter Mean Diameter) in many points, decreased during injection durations and higher injection pressure induced smaller value.
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Yoon, Seung Hyun, Sung Wook Park, Dae Sik Kim, Sang Il Kwon, and Chang Sik Lee. "Combustion and Emission Characteristics of Biodiesel Fuels in a Common-Rail Diesel Engine." In ASME 2005 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/icef2005-1258.

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A single cylinder DI (direct injection) diesel engine equipped with common-rail injection system was used to investigate the combustion and emission characteristics of biodiesel fuels. Tested fuels were conventional diesel and biodiesels obtained from unpolished rice oil and soybean oil. The volumetric blending ratios of biodiesel with diesel fuel are set at 0, 10, 20 and 40%. Experimental results show that the peak injection rate is reduced as the mixing ratio increased. The effect of the mixing ratio on the injection delay of biodiesel is not significant at the equal injection pressure. The peak combustion pressure was increased with the increase of the mixing ratio at an injection pressure of 100MPa. The ignition delay became shorter with the increase of the mixing ratio due to a higher cetane number of the biodiesel. HC and CO emissions are decreased at a high injection pressure. However, NOx emissions are increased at higher mixing ratios.
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Sanada, Kazushi. "Control of Fuel Injection Rate for Marine Diesel Engines Using a Direct Drive Volume Control System." In ASME/BATH 2015 Symposium on Fluid Power and Motion Control. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/fpmc2015-9522.

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A direct drive volume control (DDVC) is applied to fuel injection control for marine diesel engine. The DDVC consists of an AC servomotor, a fixed-displacement hydraulic pump, and a hydraulic cylinder. The hydraulic cylinder pushes a plunger pump and fuel is pressurized. When the fuel pressure becomes greater than injection pressure, fuel is injected to a combustion chamber. A brief introduction of the DDVC is described first in this paper referring to conventional fuel injection systems including a cam mechanism and a common rail system. A mathematical model of the DDVC for simulation is summarized. Experiments of fuel injection shows the control function of the DDVC fuel injection system. The topic of this paper is feedback control of the quantity of fuel injection (fuel mass per injection) of the DDVC. The feedback control system is simulated using the above mathematical model. Fuel injection is stopped by switching a drive signal of the AC servomotor and retracting a piston of the hydraulic cylinder. The timing to stop injection is adjusted based on crank angle. An algorithm of updating the crank angle to stop injection is proposed so that the quantity of fuel injection follows the target value. Simulation study shows that the update algorithm works successfully.
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Chryssakis, Christos A., Dennis N. Assanis, Sanghoon Kook, and Choongsik Bae. "Effect of Multiple Injections on Fuel-Air Mixing and Soot Formation in Diesel Combustion Using Direct Flame Visualization and CFD Techniques." In ASME 2005 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ices2005-1016.

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The main objective of this study is to investigate the effect of pilot-, post- and multiple-fuel injection strategies on fuel-air mixing and emissions formation in diesel combustion, using a combination of experimental observations and Computational Fluid Dynamics (CFD) analysis. The experimental study was carried out on a single-cylinder optical direct-injection diesel engine equipped with a high pressure common rail fuel injection system. The experimental work was supported by CFD simulations on the single-cylinder engine in order to investigate the effect of multiple injections on mixture formation. The limitations of the soot formation model were identified through direct comparisons with experimental flame visualization.
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8

Henein, Naeim A., Tamer Badawy, Nilesh Rai, and Walter Bryzik. "Ion Current, Combustion and Emission Characteristics in an Automotive Common Rail Diesel Engine." In ASME 2010 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/icef2010-35123.

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Advanced electronically controlled diesel engines require a feedback signal to the ECU to adjust different operating parameters and meet demands for power, better fuel economy and low emissions. Different types of in-cylinder combustion sensors are being considered to produce this signal. This paper presents results of an experimental investigation on the characteristics of the ion current in an automotive diesel engine equipped with a common rail injection system. The engine is a 1.9 L, 4-cylinder, direct injection diesel engine. Experiments covered different engine loads and injection pressures. The relationships between the ion current, combustion parameters and engine out NO emissions and opacity are presented. The analysis of the experimental data identified possible sources of the ion current produced in diesel engines.
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Costa, Michela, Bianca M. Vaglieco, Felice E. Corcione, and Hiroshi Omote. "Numerical Simulations by Detailed Chemistry and Experimental Measurements of Diesel Combustion in a Light Duty Common Rail Direct Injection Engine." In ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-80428.

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Present paper couples the use of a modified version of the KIVA-3V code including a model for detailed chemistry to an experimental investigation performed on an optically accessible diesel engine. The engine is equipped with a commercial four valves cylinder head and a Common Rail injection system. Digital images and UV-visible flame emission measurements are compared with the visualization of the numerical results. The diesel fuel surrogate is considered within the numerical code, namely a blend consisting of n-heptane and toluene, approximating the physical and ignition properties of the diesel oil. Products, soot and NOx formation is described by a chain of 283 reactions involving 69 species. The Partially Stirred Reactor (PaSR) assumption is adopted to maintain the computational cost within acceptable limits. The collections of digital images of the spray evolution, the mixture formation and the combustion processes are undertaken by running the engine at 1000 rpm. Commercial diesel fuel is injected by using a single injection.
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Henein, N. A., I. P. Singh, L. Zhong, Y. Poonawala, J. Singh, and Walter Bryzik. "A Phenomenological Model for Combustion and Emissions in Small Bore, High Speed, Direct Injection Diesel Engines." In ASME 2005 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ices2005-1024.

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This paper introduces a phenomenological model for the fuel distribution, combustion, and emissions formation in the small bore, high speed direct injection diesel engine. A differentiation is made between the conditions in large bore and small bore diesel engines, particularly regarding the fuel impingement on the walls and the swirl and squish gas flow components. The model considers the fuel injected prior to the development of the flame, fuel injected in the flame, fuel deposited on the walls and the last part of the fuel delivered at the end of the injection process. The model is based on experimental results obtained in a single-cylinder, 4-valve, direct-injection, four-stroke-cycle, water-cooled, diesel engine equipped with a common rail fuel injection system. The engine is supercharged with heated shop air, and the exhaust back pressure is adjusted to simulate actual turbo-charged diesel engine conditions. The experiments covered a wide range of injection pressures, EGR rates, injection timings and swirl ratios. Correlations and 2-D maps are developed to show the effect of combinations of the above parameters on engine out emissions. Emphasis is made on the nitric oxide and soot measured in Bosch Smoke Units (BSU).
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Reports on the topic "Common rail direct injection fuel system"

1

Lee, Sejun, Ocktaeck Lim, and Norimasa Lida. An Investigation on the Spray Characteristics of DME with Variation of Ambient Pressure using the Common Rail Fuel Injection System. Warrendale, PA: SAE International, November 2011. http://dx.doi.org/10.4271/2011-32-0591.

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