Relevant bibliographies by topics / Crankshaft

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Crankshaft'

Author: Grafiati
Published: 4 June 2021
Last updated: 28 May 2022

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Journal articles on the topic "Crankshaft"

1

Sun, Zhi Juan, and Jing Tao Dai. "Modal and Strength Analysis of Crankshaft in Piston Compressor." Advanced Materials Research 945-949 (June 2014): 676–79. http://dx.doi.org/10.4028/www.scientific.net/amr.945-949.676.

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For research on comprehensive performance of crankshaft in piston compressor, multi-body dynamics model was built to get mechanical boundary conditions of the crankshaft, and the fatigue strength was verified; Finite element model (FEM) of the crankshaft was established, and the 1st 6 modal of the crankshaft was obtained. The results showed that fatigue strength and dynamic characteristic of the crankshaft was qualified. Theoretical basis could be provided for optimize the crankshaft’s structure by fatigue strength and modal analysis.
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Baragetti, S. "Design Criteria for High Power Engines Crankshafts." Open Mechanical Engineering Journal 9, no. 1 (April 23, 2015): 271–81. http://dx.doi.org/10.2174/1874155x01509010271.

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The reliability of any mechanical system, in which the linear displacement of a piston is converted into the rotation of a power transmission shaft, strongly depends on the reliability of the crankshaft. The crankshaft is the critical component and any damage occurring to the crankshaft may put the mechanical system out of order. The numerical finite element simulation of crankshafts with multiple rods is often time consuming even if quite accurate if the aim is to evaluate the stress-strain behavior at the notched area and verify the component. The development of a simplified numerical model would prove effective to reduce the time needed to reach a good approximation design of the crankshaft. The aim of this paper is to give the designer a numerical procedure that allows to determine the strain and stress state and verify crankshafts having two or more rods.
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Wei, Yao Bing, and Zhen Zhen Qu. "The Static Analysis of the Parallel Bars of the Crankshaft of a Mini Air Compressor on ANSYS." Applied Mechanics and Materials 397-400 (September 2013): 344–54. http://dx.doi.org/10.4028/www.scientific.net/amm.397-400.344.

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Mechanical model of crankshaft and connecting rod mechanism of reciprocating compressor was built. Then the order of stress was obtained every ten degrees while crankshaft turning. The larger stress of crankshaft initial turnings was utilized to calculate the whole model and the unreliable region and destructive working condition then was determined. The situation was simulated with ANALYS and the static characteristics, i.e. stress and strain, of the crankshaft was also obtained. The simulated results testify the analysis and the results of the paper have great value for reference when designing crankshafts.
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Nozdrzykowski, Krzysztof, Zenon Grządziel, and Jozef Harušinec. "Determining and Analysing Support Conditions at Variable Construction of Crankshafts." New Trends in Production Engineering 1, no. 1 (October 1, 2018): 553–60. http://dx.doi.org/10.2478/ntpe-2018-0069.

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Abstract The article presents study results of the influence of crankshaft construction changes on the choice of support conditions allowing to eliminate deflections and elastic deformations of crankshafts under their self-weight. For the purpose of this study we implemented a programme for strength calculations Nastran FX 2010 which enables modelling the research subject with a finite element method and counting the value if reaction forces ensuring zero value of deflections on main journals at a change in the crankshaft’s angle of rotation.
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CHEN, XIAO PING, XIAO LI YU, RU FU HU, and JIAN FENG LI. "PREDICTION OF CRANKSHAFT FATIGUE LIMIT LOAD BY CRACK-MODELING TECHNIQUE." Journal of Advanced Manufacturing Systems 10, no. 01 (June 2011): 127–34. http://dx.doi.org/10.1142/s0219686711002065.

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In this paper, combining the previous crankshaft fatigue test data with Crack-Modeling Technique, the threshold stress intensity range, ΔKth of crankshaft can be derived. The calculated threshold, ΔKth takes the effect of material properties and processing technology into account. Then, using the threshold, ΔKth, we can predict the fatigue limit load of the different types of crankshafts with the same material properties and processing technology by Crack-Modeling Technique. This study shows that the standard crack may be a good equivalent to the crankshaft stress concentration and the prediction of the crankshaft fatigue limit load is accurate.
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Zhan, Ke, Xiao Ling Yu, Bin Yan Yu, and Jia Xie. "Torsional Vibration Analysis for Large-Scale Reciprocating Compressor Crankshaft." Applied Mechanics and Materials 457-458 (October 2013): 428–32. http://dx.doi.org/10.4028/www.scientific.net/amm.457-458.428.

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This paper presents a new method which combined multi-body dynamics theory and finite element technology to calculate transient stress of the crankshaft of the large-scale reciprocating compressor. On the basis of multi-body dynamics theory, the kinematical simulation of the crankshaft, the connecting rod, the piston and other components were performed, and thus to get the vibration modal of the crankshaft. So we can judge whether the crankshafts torsional resonance will happen, as well as get the real loads on the crankshaft when it worked. Then the transient stress of the crankshaft can be calculated using finite element technology. Comparing to traditional stress calculating methods, this new method not only considers the variable inertia which caused by reciprocating masss movement, but also can calculate the integrated vibration stress of crankshaft in three directions, including torsion, lateral and axial. Therefore, this method can describe dynamic characteristics of the crankshaft more accurately and more entirely.
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Denisov, Aleksandr, Artur Asoyan, Alexey Verkhutov, Natalija Kokodeeva, and Dmitrij Nikitin. "Change of Carrying Shaft Innovative Capacity in The Process of Growth of Fatal Cracks." MATEC Web of Conferences 334 (2021): 02014. http://dx.doi.org/10.1051/matecconf/202133402014.

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In the paper, the processes of changing the technical state of the crankshaft due to deformation and fatigue failure are considered. The defect method is presented, which allows to estimate the degree of fatigue damage of the crankshaft and to choose the way of restoration of the crankshafts
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Okamura, H., A. Shinno, T. Yamanaka, A. Suzuki, and K. Sogabe. "Simple Modeling and Analysis for Crankshaft Three-Dimensional Vibrations, Part 1: Background and Application to Free Vibrations." Journal of Vibration and Acoustics 117, no. 1 (January 1, 1995): 70–79. http://dx.doi.org/10.1115/1.2873869.

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To simplify the analysis of the three-dimensional vibrations of automobile engine crankshafts under firing conditions, the crankshaft was idealized by a set of jointed structures consisting of simple round rods and simple beam blocks of rectangular cross-section. The front pulley, timing gear, and the fly-wheel were idealized by a set of masses and moments of inertia. The main journal bearings were idealized by a set of linear springs and dash-pots. For each constituent member, the dynamic stiffness matrix was derived (in closed form) from the transfer matrix. Then the dynamic stiffness matrix for the total crankshaft system was constructed, and the natural frequencies and mode shapes were calculated. The modeling and analysis procedures were applied to the analysis of free vibrations of four kinds of crankshafts: single cylinder, three-cylinder in-line, four-cylinder in-line, and V-six engines. The different coupling behavior of the three-dimensional vibrations in the planar-structure and the solid-structure crankshaft is discussed, and the influence of the bearing oil film stiffness on the crankshaft natural frequency is also analyzed.
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Tabakov, Petr A., and Aleksey P. Tabakov. "Device for checking crankshaft bending and its straightening." Tekhnicheskiy servis mashin, no. 2 (June 10, 2020): 96–101. http://dx.doi.org/10.22314/2618-8287-2020-58-2-96-101.

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Before grinding, the crankshafts are checked for curvature, the allowed runout of the average root neck should be within 0.03-0.05 mm. Straightening is performed on a hydraulic press, installing the crankshaft on prisms in the side root necks, and to check the degree of straightening, one have to move the crankshaft to the grinding machine and fix it on the centers. Such devices have many disadvantages. (Research purpose) The research purpose is in expanding the functionality of the crankshaft straightening device, developing drawings and application of a patent for a device that could check the bending of the crankshaft at the centers, as well as straightening with a fixed reverse bend, which eliminates multiple straightening and increases the life of the shaft and the resource of the internal combustion engine. (Materials and methods) The article proposes upgraded equipment, protected by a patent, to increase the life of the crankshaft, labor productivity by 3-4 times and the accuracity of straightening. (Results and discussion) Authors have made drawings and got patent N191590 from August 14, 2019 for a device for checking the bending of the shaft on the centers and straightening under the press. The article describes the equipment work. (Conclusions) Checking the crankshaft for bending at the centers and straightening with a fixed reverse bend on a single device significantly improves labor productivity and straightening accuracy. The straightening of crankshafts by the proposed method is more than 99 percent without breakdowns.
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Chen, Xiao Ping, and Ru Fu Hu. "Analysis of Surface Rolling Process Impact on Crankshaft Fatigue Strength." Advanced Materials Research 488-489 (March 2012): 236–40. http://dx.doi.org/10.4028/www.scientific.net/amr.488-489.236.

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In this paper, the fatigue comparative test includes two groups of crankshafts, one group with surface rolling process and the other not, has been finished. And the test results are analyzed. The parent standard deviation test shows that there is not effect of surface rolling process impact on the uniformity of crankshaft fatigue strength. But it is sure that there is the impact of surface rolling process impact on the average of crankshaft fatigue strength by the average maternal test. So the surface rolling process can be used to improve crankshaft fatigue strength.
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Dissertations / Theses on the topic "Crankshaft"

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FEIFERIS, ANDRE DOS REIS. "STRUCTURAL EVALUATION OF CRANKSHAFT UNDER MULTIAXIAL FATIGUE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2018. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=35967@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTITUIÇÕES COMUNITÁRIAS DE ENSINO PARTICULARES
Eixos de virabrequim estão sujeitos a carregamentos multiaxiais quando em serviço. Por se tratar de um estado complexo de tensões, os modelos aplicados na determinação da vida em fadiga de tais componentes devem permitir, também, uma abordagem multiaxial, mais avançados do que aqueles adotados para carregamentos uniaxiais. O objetivo deste trabalho foi prever a falha em serviço de eixos virabrequins de unidades geradoras Diesel ou gás de plantas termoelétricas. Falhas recentemente ocorridas em eixos virabrequins no parque termoelétrico nacional justificam o presente estudo, para garantir eficiência e segurança nas operações industriais. Com base no método de elementos finitos, foram calculadas as tensões atuantes em um eixo virabrequim de unidade geradora a gás, com 10 mancais, duas bielas por mancal e fabricado com aço estrutural DIN 34CrNiMo6. Em sequência, adotando-se estas tensões atuantes calculadas, foram aplicados diversos critérios de fadiga para prever sua falha. Para tal, adotaram-se os modelos de Papadopoulos, Findley, Matake, McDiarmid, Carpinteri e Spagnoli, Liu e Mahadevan, Mises, Sines e Crossland, todos de fadiga de alto ciclo, baseados no plano crítico ou na tensão de von Mises. Propriedades de resistência à fadiga do material foram retiradas da literatura. Os resultados obtidos indicaram que o componente é seguro quando avaliado usando tais critérios.
Crankshaft axles are subject to multiaxial loading when in service. Because the resulting state of stresses is complex, models applied to determining the fatigue life of such components employ a multiaxial approach as well, more advanced than those adopted for uniaxial loads. The objective of this work is to predict the failure in service of crankshafts of diesel or gas generating units of thermoelectric plants. Crankshafts reported recent failures in the national thermoelectric power plant justifies the present study, to guarantee efficiency and safety in such industrial operations. Based on the finite element method, the resulting stresses on a DIN 34CrNiMo6 structural steel gas generating unit crankshaft, with 10 bearings, two connecting rods per bearing were calculated. Using these finite element calculated stresses, several fatigue criteria were applied to predict this cranckshaft structural failure. Models due to Papadopoulos, Findley, Matake, McDiarmid, Carpinteri and Spagnoli, Liu and Mahadevan, Mises, Sines and Crossland, all of high cycle fatigue based on the critical plane or von Mises strain, were adopted. Material fatigue properties used in the analyses were compiled from specidized literature. Obtained results indicated that the component considered is safe regarding fatigue loadings, as evaluated using such criteria.
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Міхно, Світлана Василівна, Свитлана Васильевна Михно, Svitlana Vasylivna Mikhno, Георгій Геннадійович Лагута, Георгий Геннадьевич Лагута, Heorhii Hennadiiovych Lahuta, and A. Gonshchik. "Qualimetric effectiveness evaluation of large-size crankshaft neck superfinishing." Thesis, Видавництво СумДУ, 2010. http://essuir.sumdu.edu.ua/handle/123456789/16945.

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Vrček, Aleks. "Micro-pitting and wear characterization for crankshaft roller bearing application." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-68418.

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Efficiency of internal combustion engines (ICEs) is far from optimal. Due to the continuously increasing demands on CO2 regulations, automobile industries are forced to improve such efficiency. A crankshaft roller bearing (CSRB) can lead to significant improvements in engine efficiency. However, before this can be implemented into an actual engine, several challenges have to be addressed. One such challenge is the satisfactory performance of CSRB. The current crankshaft limits the service life since it must act as a roller bearing raceway. Therefore, better material properties are required for the use of CSRB in crankshaft applications. In order to select suitable material for the CSRB, development of several characterization methods is required. These methods are based on failure modes that are expected to occur in the actual application. Surface initiated fatigue was shown to be the main failure mode that could lead to complete failure of such a component. The following three characterizations needs are identified: material characterization, lubricant characterization and surface roughness characterization. Two of these methods are partially part of this thesis. Material characterization is required to select the optimal steel candidate for the CSRB component. A method was developed to assess the damage modes on a reference 100Cr6 steel pair under conditions prevalent to CSRB application. However, fully formulated oil was excluded from this investigation and only low-additive oil was employed. Micro-pitting and wear damage modes were identified and were later assessed. Different surface roughness combinations were tested, from where micro-pitting regions were identified. In addition, the effects of surface hardness and sliding on micro-pitting and wear were investigated. It was found that hard steel contacts are more prone to micro-pitting damage compared to soft ones, but less susceptible to mild wear. In addition, higher sliding increases the degree of micro-pitting and wear. Lubricant characterization was performed to optimize the engine oil formulation for rolling contacts. A method to assess different engine oils in terms of micro-pitting and wear damages of rolling contacts was employed. The effect of viscosity, additive chemistry and different mixtures of base oils on aforementioned performance were presented and discussed. In addition, lubricant characterization will provide in-depth knowledge for engine oils’ manufacturers to improve engine oil formulations for satisfactory performances of CSRB design.
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Johansson, Jonas. "Investigation of Mode Superposition as Modelling Approach for Crankshaft Torsion." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-69453.

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With tougher emission standards for heavy duty trucks, good control of the engine is of importance. By taking into consideration the torsional vibrations occurring in the crankshaft, the engine control can be improved. This could be done by implementing a torsion model that would give feedback to the engine control unit to reduce the cycle-to-cycle variations in the cylinders, which is partly due to the torsion in the crankshaft. It is therefore of interest to determine if a torsion model can be developed with a reduced computational complexity and still have sufficient accuracy. In this thesis a model was developed in Matlab for estimation of torsion in the crankshaft of an inline 6 cylinder diesel engine. By applying Newtons second law, the equations of motion that describe the torsional vibrations in the crankshaft were set up. The equations of motion were transformed using modal analysis and with the use of mode superposition it was investigated how reducing the number of vibrational modes in the model, affected the models accuracy in its estimation of torsion. Two model reductions were evaluated where the first three and four vibrational modes were used to calculate the torsional displacement between the flywheel and the cylinders. Using measured pressure curves for a number of operating points of the engineas input to the model, results were produced for different crank angle intervalsshowing deviations between the developed torsion models and a reference models estimation of torsion. Due to the damping approximation used in the model, high initial deviations could be found at certain operating points beforereducing the number of vibrational modes. These initial deviations weregreatest for the first two cylinders. Results from the model reductions showed that using the first three vibrational modes in the torsion model, is sufficient for estimating the torsional displacement between the flywheel and all cylinderswith an accuracy of within 0.1 degrees, with the exception of the first two cylinders for the early and late combustion interval.
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GONCALVES, ROBERTA AMORIM DE MAGALHAES MONTEIRO. "CONTRIBUTION IN THE USEFUL LIFE EVALUATION OF CRANKSHAFT UNDER MULTIAXIAL FATIGUE." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2017. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=36348@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO
COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO
PROGRAMA DE SUPORTE À PÓS-GRADUAÇÃO DE INSTS. DE ENSINO
As previsões de falhas por fadiga tornam-se críticas sob condições multiaxiais de carregamento, uma vez que a complexidade do estado de tensões requer uma análise com base em modelos mais avançados do que aqueles adotados para carregamentos uniaxiais. Neste contexto, alguns critérios foram desenvolvidos para tentar prever a falha de componentes submetidos a carregamentos cíclicos multiaxiais. Um exemplo de componente mecânico sujeito a fadiga multiaxial quando em serviço são os eixos virabrequim de unidades geradoras de plantas termoelétricas. Usualmente projetados segundo o critério de Findley, falhas recentes de eixos virabrequim ocorridas no parque termoelétrico nacional, tem provocado o questionamento da eficiência de tal critério. Desta forma, o presente estudo teve como objetivo analisar a aplicabilidade de seis modelos (Papadopoulos, Findley, Matake, McDiarmid, Carpinteri e Spagnoli e Liu e Mahadevan) de fadiga multiaxial de alto ciclo, baseados no plano crítico, para prever a falha de eixos virabrequim de unidades geradoras. Para aplicação dos modelos, adotaram-se diferentes parâmetros de carregamento (tensão média e defasagem de aplicação das tensões normais e cisalhantes) e propriedades de material (resistência à fadiga), partindo de valores encontrados na literatura. Observou-se uma divergência entre os resultados de cada modelo estudado, sendo uns mais conservadores do que os outros, em função do carregamento e propriedades do material. Entretanto, o modelo de Papadopoulos, com base na facilidade de aplicação e sensibilidade de previsão da falha, mostrou-se mais adequado.
The fatigue failure prediction becomes critical under multiaxial loading conditions, since the complexity of the stress state requires analysis based on models more advanced than those adopted for uniaxial loads. In this context, some criteria were developed in an attempt to predict the failure of components subjected to multiaxial cyclic loads. An example of mechanical component subject to multiaxial fatigue is the crankshaft of thermoelectric plants. It is usually projected according to the Findley criterion. However, recent failures of crankshafts occurring in the national thermoelectric park, put on doubt the efficiency of such criterion. In this way, the present study aimed to analyze the applicability of six models (Papadopoulos, Findley, Matake, McDiarmid, Carpinteri e Spagnoli and Liu e Mahadevan) of high cycle multiaxial fatigue, based on the critical plane, to predict failure on crankshaft of generating units. For the models application, different loading parameters (medium stress and out-of-phase stresses) and material properties (fatigue limit) were adopted, starting from values found in the literature. A divergence between the results of each model was observed, some of them were more conservative than the others, depending on the loading and material s properties. However, the Papadopoulos model, based on easy application and failure prediction sensitivity, proved to be more suitable than the others.
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McCartan, Charles Declan. "Development of a computer modelling package for predicting engine crankshaft torsional vibrations." Thesis, Queen's University Belfast, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.295418.

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Cain, Jason James. "Collision Analysis of the Reversible Crankshaft Mechanism in a Convertible Refrigeration Compressor." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/33479.

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The purpose of this study is to analyze the behavior of a reversible two-cylinder refrigerant compressor manufactured by Bristol Compressor Incorporated. This compressor contains a specialized linkage that causes the compressor to transition from a two-cylinder compressor to a single-cylinder compressor when the direction of rotation of the crankshaft is reversed. The linkage accomplishes this by reducing the throw of one cylinder to zero. Of interest are the conditions to which this linkage is subjected when the direction of rotation is again reversed, causing the compressor to return to its two-cylinder functioning. When this reversal takes place, a collision occurs within the linkage. These repeated collisions are thought to be the cause of fatigue failure of the linkage in many of these compressors. To verify that this collision is the problem, an understanding of the stress state during the collision is needed. This thesis begins the work necessary to determine the dynamic stress state present within the system. A FORTRAN program was developed that modeled the kinematic behavior of the system under operating conditions. The program predicts the accelerations, velocities, positions, and internal forces present within the system during startup conditions. Also, a method has been developed to model rotary sliding contact between two cylindrical surfaces. This method is developed and investigated in hopes that it will facilitate the modeling of the behavior of the compressor linkage in a dynamic finite element analysis.
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Grimm, Benjamin Mihuta. "Modeling and Analysis of Crankshaft Energy Harvesting for Vehicle Fuel Economy Improvement." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1339685318.

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Johnsson, Roger. "Crankshaft speed measurements and analysis for control and diagnostics of diesel engines." Licentiate thesis, Luleå tekniska universitet, Drift, underhåll och akustik, 2001. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-18687.

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The increasing demands from governments on the engine manufactures to lower the fuel consumption, lower the exhaust emissions and to reduce the noise have lead to an intensive research in the combustion process. Measurement of the combustion process inside the cylinder is only suitable in laboratory environment due to a number of limitations; the pressure transducer needed to measure the pressure is expensive, difficult to mount in the cylinder and has a limited lifetime that is much shorter than the engine's lifetime. Demands of on-board diagnostics where the combustion process is continuously monitored, on production vehicles have created a need for a method to indirectly measure the combustion process. The two main indirect methods are vibration measurement based reconstruction and crankshaft angular speed measurement reconstruction. The combustion process give rise to vibrations in the engine body that in the former method is measured with an accelerometer and the pressure can be reconstructed by using inverted transfer functions. The idea behind the latter method, the crankshaft angular speed reconstruction method, is that when one cylinder fires the produced torque is higher than the load torque and the crankshaft accelerates. As next cylinder goes into compression the total load torque increases and the crankshaft speed will decrease. This is repeated when the next cylinder fires and the produced crankshaft speed fluctuations will then contain information about the combustion and compression that caused it. In this thesis an indirect method to predict the maximum cylinder pressure is developed based on the crankshaft speed fluctuations combined with neural networks. The speed fluctuations were measured on a 6-cylinder inline diesel engine at 9 speed-load-combinations. A two layer (one hidden and one output layer) feedforward neural network was trained with the backpropagation algorithm. The prediction accuracy for pmax was found to be better than ±5 % at 95%-confidence interval for the validation set. Another important parameter for the engine control and for optimising the fuel efficiency at the same time as the exhaust emissions are kept to a minimum, is the position of the pistons most upper position, TDC (top dead centre). The TDC position is normally measured mechanically with means that need access to the cylinders (the cylinder head has to be removed). This method is time consuming and therefore expensive and because of that not used on production engines. Several indirect methods to measure the TDC- positions have been suggested. Either based on measured cylinder pressures, that again need a pressure transducer mounted in the cylinder, or on the crankshaft speed fluctuations. An indirect method based on the speed fluctuations, that are measured when the starter motor rotates the engine with turned off ignition, is developed. From the measured crankshaft speed fluctuations the TDC-positions can be determined either by curve fitting or with neural networks. The TDC position determined by curve fitting has a bias error, due to the out-of-phase acceleration component in the crankshaft that are induced by the starter motor, but also caused by heat exchange between the compressed gas and the cylinder walls and gas. The results from the neural network were found to be better and the TDC-position for all 6 cylinders was determined within ±0.1 degree crank angle at 95%-confidence interval.

Godkänd; 2001; 20070110 (biem)

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Tamatam, Lakshminarayana Reddy. "Tribological performance of different crankshaft bearings in conjunction with textured shaft surfaces." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65511.

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Improving vehicle efficiency and complying to stricter exhaust emission legislations are some of the driving factors to advancement in technology of engine components. The main bearings in an internal combustion engine contribute significant amount of friction. These bearings support engine loads and allow free rotation of the crankshaft. The bearings consist of a steel backing, a lining material and an optional overlay. The overlays help to minimize friction and enhance seizure resistance during adverse operating conditions. The aim of the thesis is to study the friction and wear performance of five multi-layered bearings with various overlays. A bi-metal bearing is used as the reference for comparison. Additionally, influence of two shaft surface textures are also studied comparing to the standard shaft surface finish. A modified twin-disc test rig is used to evaluate tribological performance of the bearing system. Forced misalignment tests were also performed to simulate edge contact conditions, which occur in an engine due to shaft deflection, asymmetrical loading and other factors. The bearing surface profiles were measured using an optical interferometer. The test setup showed good repeatability and consistent results. Relative friction and wear performance are compared and the bearings are ranked accordingly. One bearing type with a polymer and MoS2 overlay showed the best overall performance. This bearing combined with a plateau textured shaft further lowered the friction coefficient by 3 % in boundary and mixed lubrication regime.
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Books on the topic "Crankshaft"

1

Batiuk, Tom. Crankshaft. Kansas City: Andrews and McMeel, 1992.

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Anson, D. B. Aspects of quality in crankshaft manufacture. Manchester: UMIST, 1991.

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Batiuk, Tom. Strike Four!: The Crankshaft Baseball Book. Kent, Ohio: Black Squirrel Books, 2014.

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Chuck, Ayers, ed. I've still got it!: A Crankshaft collection. Kansas City: Andrews and McMeel, 1995.

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Chuck, Ayers, ed. Your favorite-- crab cakes!: A Crankshaft collection. Kansas City: Andrews McMeel Pub., 2002.

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Chuck, Ayers, ed. -- and one slice with anchovies!: A Crankshaft collection. Kansas City: Andrews and McMeel, 1993.

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Vallejo Maldonado, Pablo Ramon, and Nikolay Chaynov. Kinematics and dynamics of automobile piston engines. ru: INFRA-M Academic Publishing LLC., 2019. http://dx.doi.org/10.12737/989072.

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The fundamentals of kinematics and dynamics of transport piston internal combustion engines made using different layout schemes are presented. Along with the traditional in-line, V-shaped, including oppositional, arrangement of cylinders, schemes with "staggered" arrangement of cylinders in the block at the displaced connecting rod necks of the crankshaft of the engine are considered. The kinematics of the coaxial crank mechanism is considered in detail. The questions of dynamics with reduction of calculated dependences of forces, moments, a choice of a rational order of work of cylinders in relation to the considered kinematic schemes are in detail stated. Considerable attention is paid to the unevenness of the crankshaft rotation speed and engine balancing. The loads on the main and connecting rod bearings of the crankshaft, the knowledge of which is necessary in determining the bearing capacity of bearing units, are also considered. Meets the requirements of the Federal state educational standards of higher education of the last generation. For students of higher educational institutions studying in the direction of training 23.03.03 "Operation of transport and technological machines and complexes" and related areas.
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Swanson, William J. Determination of diesel engine cylinder gas torques from speed fluctuations with a high-fidelity crankshaft torsional model. Monterey, Calif: Naval Postgraduate School, 1998.

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Val'eho, Mal'donado, and Nikolay Chaynov. Calculation of kinematics and dynamics of inline piston engines. ru: INFRA-M Academic Publishing LLC., 2021. http://dx.doi.org/10.12737/1058850.

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The textbook discusses the kinematics and dynamics of inline piston internal combustion engines with axial and deaxial crank mechanism. The necessary material for calculating the forces and moments acting in the engine is given, the balancing of engines, the construction of vector diagrams of pressure on the crankshaft bearings are considered, examples of calculations are given. Meets the requirements of the federal state educational standards of higher education of the latest generation. For students of higher educational institutions studying in the field of training "Energy engineering".
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How to build & modify pistons, rods & crankshafts. Osceola, WI, USA: Motorbooks International Publishers, 1996.

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Book chapters on the topic "Crankshaft"

1

Wani, Prakash R. "Crankshaft." In Energy, Environment, and Sustainability, 525–73. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-0970-4_15.

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Sun, Jun, Jianglin Liu, and Changlin Gui. "Thermoelastohydrodynamic Lubrication Analysis of Crankshaft Bearing Considering Crankshaft Deformation under Load." In Advanced Tribology, 112–15. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-03653-8_37.

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Bergmaier, Johannes, G. Wachtmeister, P. Fischer, H. Pflaum, and K. Stahl. "Split-crankshaft engine: concept for a combustion engine with a two-piece disengageable crankshaft." In Proceedings, 953–70. Wiesbaden: Springer Fachmedien Wiesbaden, 2014. http://dx.doi.org/10.1007/978-3-658-05130-3_68.

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Köhler, Eduard, Eckhart Schopf, and Uwe Mohr. "Crankshaft Assembly Design, Mechanics and Loading." In Handbook of Diesel Engines, 221–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-89083-6_8.

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Nwagboso, Christopher O. "Sensors and systems for crankshaft position measurement." In Automotive Sensory Systems, 61–94. Dordrecht: Springer Netherlands, 1993. http://dx.doi.org/10.1007/978-94-011-1508-7_4.

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Kotliar, Alexey, Yevheniia Basova, Maryna Ivanova, Magomediemin Gasanov, and Ivan Sazhniev. "Technological Assurance of Machining Accuracy of Crankshaft." In Lecture Notes in Mechanical Engineering, 37–51. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-18682-1_4.

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Sapkal, Sagar, and Abhishek Joshi. "Lean Manufacturing Implementation in Crankshaft Manufacturing Company." In Lecture Notes in Mechanical Engineering, 629–36. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-33-4320-7_56.

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Perge, Julius, R. Beykirch, J. Lehmann, M. Gast, A. Piccaglia, A. Almini, and N. Parenti. "Tailored crankshaft design from early development phase on." In Proceedings, 1575–94. Wiesbaden: Springer Fachmedien Wiesbaden, 2016. http://dx.doi.org/10.1007/978-3-658-13255-2_115.

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Yang, Jing, Cheng Sun, Yi Wang, and Banglin Deng. "A Gasoline Engine Crankshaft Fatigue Analysis and Experiment." In Intelligent Robotics and Applications, 540–50. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-33515-0_53.

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Zheng, Bin, Yongqi Liu, Ruixiang Liu, and Jian Meng. "Finite Element Analysis of Marine Diesel Engine Crankshaft." In Advances in Computer Science, Intelligent System and Environment, 683–87. Berlin, Heidelberg: Springer Berlin Heidelberg, 2011. http://dx.doi.org/10.1007/978-3-642-23777-5_110.

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Conference papers on the topic "Crankshaft"

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Kimura, Jouji, and Takashi Yamashita. "Diesel Engine Crankshaft Rotational Speed Fluctuation Analysis." In ASME 2003 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2003. http://dx.doi.org/10.1115/ices2003-0551.

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Crankshafts drive many accessories such as fuel injection pumps, camshafts, oil- and water pumps, compressors, fans, alternators etc. by using either gears or belts. Since crankshaft rotational speed fluctuates and engine accessories have moments of inertia, belts slip on pulleys and gears hit other gears, which results in noise and wear. This paper describes the mechanism of the rotational speed fluctuations of crankshafts by separating rotational speed fluctuations into those for a rigid and those for a torsional crankshaft for a V-type six-, eight- and ten-cylinder diesel engine. After that, crankshaft rotational speed fluctuations at crankshaft locations are discussed.
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Drallmeier, Joseph, Jason B. Siegel, Robert Middleton, Anna G. Stefanopoulou, Ashwin Salvi, and Ming Huo. "Modeling and Control of a Hybrid Opposed Piston Engine." In ASME 2021 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/icef2021-67541.

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Abstract This paper presents the modeling and control of an opposed piston (OP) engine in a novel hybrid architecture. The OP engine was selected for this work due to the inherent thermody-namic benefits and the balanced nature of the engine. The typical geartrain required on an OP engine was exchanged for two electric motors, significantly reducing friction and decoupling the crankshafts. By using the motors to control the crankshaft motion profiles, this configuration introduces capabilities to dynamically vary compression ratio, combustion volume, and scavenging dynamics. To realize these opportunities, a model of the system capturing the instantaneous engine dynamics is essential along with methodology to regulate the crankshaft’s rotational dynamics utilizing the electric motors. The modeling presented here couples a 1D model capturing the gas exchange process during scavenging and a 0D model of the crankshaft dynamics and the heat release profile due to combustion. With the use of this model, a linear quadratic controller with reference feedforward was designed to track the crankshaft motion trajectory. Experimental results are used to validate the model and controller performance. These results highlight the sensitivity to model uncertainty at points with high cylinder pressure, leading to large differences in control input near minimum volume. The proposed controller is, however, still able to maintain tracking error for crankshaft position below ± 1 degree.
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Al-Azirjawi, Basheer Saad Kadhum. "New Design Solution for Crankshaft." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70436.

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The crankshaft is a key part moving in the internal combustion engine. It converts the reciprocating piston movement into rotary motion. It is exposed to different forces resulted from the pistons pressures, friction, bending stresses and others. The paper concentrates on protecting the crankshaft journals from the direct impact of the piston pressure and other forces. It presents a familiar new modular product design. From this concept, work has done on the additional of the so-called ‘load bearing’ (two halves of a highly finished surfaces sleeve) embedded within the crankshaft journal. The proposed load bearing isolates the crankshaft journal and takes the place in the contact with other rotary components. This is an experimental research because of the presence of an extensive variety of models and uses of crankshafts. A prototype of the new solution was made and implemented on a single piston four stroke internal combustion engine and put in operation for 250 hrs. A precise examination and analyses of parameters in contrast with conventional crankshaft was done for verification and validation.
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Torims, Toms, Branko Katalinic, Andris Ratkus, Janis Vilcans, and Marcis Zarins. "New In-Situ Technology for Marine Diesel Engine Crankshaft Renovation and its 3D Surface Texture Model." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-85354.

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Repairing marine diesel engine crankshafts is a significant part of overall engine repairs and thus is very important for the ship building and ship repair industry. When a ship’s diesel engine is repaired, crankshaft journal surfaces must be renewed according to very precise geometrical and surface roughness requirements. Although current technologies are sufficient to meet these requirements, they are very time consuming and consequently expensive. A comprehensive research into the surface machining of marine diesel engine crankshaft journals allowed to improve technological processes and to identify respective surface roughness parameters, as well as to provide appropriate technological recommendations. It is important to note that crankshaft journal surfaces must be seen as 3D objects, whose micro-topographical surface roughness parameters have to be defined so that they reflect the actual surface. To summarize all available scientific research in this field, we can state that there has been no analysis into the impact of technological regimes on the surface micro-topography of marine engine crankshaft journals. Bearing in mind the aforementioned arguments a study has been launched to develop a novel grinding technology, enabling diesel engine crankshafts with medium-sized crankpin journals to be repaired directly inside the engine housing. This paper covers the following issues: 1) Description of the novel technological equipment for crankshaft journal grinding; 2) 3D roughness model of the crankshaft journal surface; 3) calculation of 3D parameters based on practical metrological and technological characteristics. This technology saves significant financial resources as well as reduces engine repair time. By solving problems related to surface accuracy, it is possible to considerably improve the crankshaft machining process, along with the performance of maintenance operations and consequently the overall quality of repair work. In this paper, the crankshaft journal surfaces will be defined using 3D surface roughness parameters.
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Sun, Jun, Xiaoyong zhao, and Hu Wang. "Lubrication Analysis of Crankshaft Bearing Considering Crankshaft Deformation." In SAE 2011 World Congress & Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2011. http://dx.doi.org/10.4271/2011-01-0613.

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Jha, Nand K. "Automation in Manufacturing Operation of Crankshaft." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62855.

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This paper deals with multistage flow type manufacturing of crankshafts. The advanced methodologies in manufacturing systems, re-configurability and high speed manufacturing adopted in the paper will help reduce cost and improve productivity. The optimization of the multistage manufacturing is based on mathematical programming formulation and decomposition approach. The optimum process parameters such as speed, feed and depth of cut for individual operations are calculated using this technique. The effect of change in design data on manufacturing parameters and eventually the cost of the crankshaft at each operation are visualized. This is likely to help the manufacturing engineers to attempt to reduce cost at appropriate stage. The manufacturing automation of crankshaft is attempted on the methodology presented in the paper. The final configuration of the automated production system shows the specification of machine tools in the production system.
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Huang, Baoke, Jun Sun, Hu Wang, Xiaoyong Zhao, and Qin Teng. "Design Optimization of Crankshaft Bearing Based on Crankshaft-Bearing System." In SAE 2016 World Congress and Exhibition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2016. http://dx.doi.org/10.4271/2016-01-1388.

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Fujimoto, Hiroya, Takaharu Goto, Shunichi Aoyama, Shinichi Kiga, and Toshihiro Hirai. "Research on Crankshaft System Behavior Based on Coupled Crankshaft-Block Analysis." In International Fuels & Lubricants Meeting & Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1997. http://dx.doi.org/10.4271/972922.

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Gawlinski, Marek, Piotr Konderia, and Gerd Upper. "Optimization of Crankshaft Seals." In SAE International Congress and Exposition. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 1988. http://dx.doi.org/10.4271/880309.

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Idehara, Annelise Yuiko, Auteliano Antunes dos Santos Junior, and Alex de Souza Rodrigues. "LONGITUDINAL EFFORT IN CRANKSHAFT." In SAE Brasil 2009 Congress and Exhibit. 400 Commonwealth Drive, Warrendale, PA, United States: SAE International, 2009. http://dx.doi.org/10.4271/2009-36-0155.

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Reports on the topic "Crankshaft"

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Ukhande, Manoj, Vijaykumar Khasnis, Santosh Kumar, Raveendra Parvatrao, and Girish Tilekar. Crankshaft Design Re-Engineering for Better Bending Fatigue Strength. Warrendale, PA: SAE International, September 2013. http://dx.doi.org/10.4271/2013-01-2436.

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Nishida, Kenji, Tetsuya Kaneko, Yoichi Takahashi, and Koji Aoki. Estimation of Indicated Mean Effective Pressure Using Crankshaft Angular Velocity Variation. Warrendale, PA: SAE International, November 2011. http://dx.doi.org/10.4271/2011-32-0510.

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Bauer, Mark E. Development of High-Performance Cast Crankshafts. Final Technical Report. Office of Scientific and Technical Information (OSTI), March 2017. http://dx.doi.org/10.2172/1349522.

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Edwards, H. W., M. F. Kostrzewa, and G. P. Looby. Environmental Research Brief: Pollution prevention assessment for a manufacturer of rebuilt industrial crankshafts. Office of Scientific and Technical Information (OSTI), August 1995. http://dx.doi.org/10.2172/111856.

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Shimizu, Shingo, and Yuzuru Tahara. Development of Pb-free Free-cutting Microalloyed Steel with High Toughness for Crankshafts of Small Multipurpose Engines. Warrendale, PA: SAE International, October 2005. http://dx.doi.org/10.4271/2005-32-0069.

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Correlation Between Vibration Level, Lubricating Oil Viscosity and Total Number Base of an Internal Combustion Engine Operated with Gasoline and Ethanol. SAE International, March 2022. http://dx.doi.org/10.4271/2022-01-0620.

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Lubricating oils for automotive engines have been incorporating important improvements in chemical properties to increase engine performance, reduce fuel consumption and vehicular emissions indices, in addition to increasing the time interval for changing the lubricant itself. The objective of this study is to investigate the vibrational behavior of the block and crankshaft an Otto cycle internal combustion engine operated with ethanol and gasoline fuel as a function of the viscosity and total base number (TBN) of the lubricant. The study consisted of instrumenting the block and the 1st and 5th fixed bearings of the crankshaft with accelerometers to measure the engine vibration intensity and operating the engine on a bench dynamometer in a specific test cycle. Each experiment lasted 600 hours and every 50 hours a block and crankshaft engine vibration level were measured and 100ml sample of lubricating oil was collected to check viscosity and TBN chemical lubricant's properties. The results show that the block and crankshaft engine vibration level increases with the time of use of the lubricating oil and that this increase is very significant when the oil viscosity an TBN chemical properties reaches the minimum value stipulated by the manufacturer lubricating oil. Semi-synthetic and synthetic lubricating oils have similar engine protection characteristics, but synthetic oil protects the engine for a longer period of time due to less degradation of viscosity an TBN chemical properties compared to semi-synthetic. Mineral lubricating oil presented protection for a very short test period, due to the rapid degradation of chemical properties and measurements showed an average increase of 20% of vibration engine running with mineral lubricating oil in relation synthetic and semi-synthetic oils. This research is important because it correlates the degradation of the lubricating oil with the engine vibration level and vibration problems in internal combustion engines produce premature wear on the internal components of the engine, which contributes to reduce the lifespan of the engine. This study also shows how is important to observe the correct application of automotive oils.
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