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Relevant bibliographies by topics / Piston rings Lubrication systems Internal combustion engines

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Journal articles
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Academic literature on the topic 'Piston rings Lubrication systems Internal combustion engines'

Author: Grafiati

Published: 4 June 2021

Last updated: 10 February 2022

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Journal articles on the topic "Piston rings Lubrication systems Internal combustion engines"

1

Ahmed Ali, Mohamed Kamal, Hou Xianjun, Richard Fiifi Turkson, and Muhammad Ezzat. "An analytical study of tribological parameters between piston ring and cylinder liner in internal combustion engines." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 230, no. 4 (2016): 329–49. http://dx.doi.org/10.1177/1464419315605922.

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This paper presents a model to study the effect of piston ring dynamics on basic tribological parameters that affect the performance of internal combustion engines by using dynamics analysis software (AVL Excite Designer). The paramount tribological parameters include friction force, frictional power losses, and oil film thickness of piston ring assembly. The piston and rings assembly is one of the highest mechanically loaded components in engines. Relevant literature reports that the piston ring assembly accounts for 40% to 50% of the frictional losses, making it imperative for the piston rin

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Tian, T., and V. W. Wong. "Modeling the Lubrication, Dynamics, and Effects of Piston Dynamic Tilt of Twin-Land Oil Control Rings in Internal Combustion Engines." Journal of Engineering for Gas Turbines and Power 122, no. 1 (1999): 119–29. http://dx.doi.org/10.1115/1.483183.

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A theoretical model was developed to study the lubrication, friction, dynamics, and oil transport of twin-land oil control rings (TLOCR) in internal combustion engines. A mixed lubrication model with consideration of shear-thinning effects of multigrade oils was used to describe the lubrication between the running surfaces of the two lands and the liner. Oil squeezing and asperity contact were both considered for the interaction between the flanks of the TLOCR and the ring groove. Then, the moments and axial forces from TLOCR/liner lubrication and TLOCR/groove interaction were coupled into the

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Rakosi, Edward, Gheorghe Manolache, Sorinel Gicu Talif, and Dan Teodor Balanescu. "COSRING-LUJET, Integrated New Concept in Automotive I.C. Engines for a Better Lubrication." Applied Mechanics and Materials 659 (October 2014): 231–36. http://dx.doi.org/10.4028/www.scientific.net/amm.659.231.

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The COSRING-LUJET is a new concept for integrated solution to improve the lubrication regime in internal combustion engines. Introducing a conical shape for the peripheral surface of the rings, the authors analyze the conditions for the lubrication regime. Under this new concept, entitled COSRING, has developed a method for determining the transversal profile of the first and the second compression ring in order to obtain a better lubrication conditions for the piston ring – cylinder line assembly. On the other hand, the authors analyze the main factors affecting the cam-follower contact condi

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Mahmoud, Kamel G., Oliver Knaus, Tigran Parikyan, Guenter Offner, and Stjepan Sklepic. "An integrated model for the performance of piston ring pack in internal combustion engines." Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 232, no. 3 (2017): 371–84. http://dx.doi.org/10.1177/1464419317736676.

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Piston rings are important components in internal combustion engines. Their primary function is to seal dynamically the gap between moving piston and cylinder liner surface in order to prevent the combustion gases from penetrating into the crankcase. The rings also control the oil leakage from the crankcase to the combustion chamber. The performance of the piston ring pack impacts the engine efficiency, durability and emissions. The recognition of the impact of the ring-pack performance on the engine design resulted in a sustained effort of research and development aimed at understanding the o

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Ma, M.-T., E. H. Smith, and I. Sherrington. "A Three-Dimensional Analysis of Piston Ring Lubrication Part 1: Modelling." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 209, no. 1 (1995): 1–14. http://dx.doi.org/10.1243/pime_proc_1995_209_401_02.

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The study of piston ring lubrication in internal combustion engines has remained a very active area in tribology. Theoretical analyses have been developed by many researchers to predict the performance characteristics of piston rings, but almost all previous models established were based upon the assumption that ring/cylinder geometry was axisymmetric. This may not be adequate for modern-day engine design since it is well known that cylinder bores are not perfectly circular. They suffer radial distortions which arise for various reasons. In the current work, a three-dimensional model has been

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Zhang, Yali, Xiaogang Zhang, Tonghai Wu, and You-bai Xie. "Effects of surface texturing on the tribological behavior of piston rings under lubricated conditions." Industrial Lubrication and Tribology 68, no. 2 (2016): 158–69. http://dx.doi.org/10.1108/ilt-05-2015-0063.

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Purpose – The piston ring-cylinder liner pair is one of the most important tribological systems of an internal combustion engine. The friction loss of the piston ring-cylinder liner pair accounts for the largest portion of total efficiency losses. Therefore, improving the tribological system design of the piston ring-cylinder liner pair can reduce friction losses and bring tremendous economic benefits to society. This paper aims use surface texturing, which is proving to be an effective method, for improving the tribological performance of sliding surfaces. Design/methodology/approach – In thi

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Wei, Nasha, James Gu, Fengshou Gu, et al. "An Investigation into the Acoustic Emissions of Internal Combustion Engines with Modelling and Wavelet Package Analysis for Monitoring Lubrication Conditions." Energies 12, no. 4 (2019): 640. http://dx.doi.org/10.3390/en12040640.

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Online monitoring of the lubrication and friction conditions in internal combustion engines can provide valuable information and thereby enables optimal maintenance actions to be undertaken to ensure safe and efficient operations. Acoustic emission (AE) has attracted significant attention in condition monitoring due to its high sensitivity to light defects on sliding surfaces. However, limited understanding of the AE mechanisms in fluid-lubricated conjunctions, such as piston rings and cylinder liners, confines the development of AE-based lubrication monitoring techniques. Therefore, this stud

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Abril, Sofia Orjuela, Jhan Piero Rojas, and Eder Norberto Flórez. "Numerical Methodology for Determining the Energy Losses in Auxiliary Systems and Friction Processes Applied to Low Displacement Diesel Engines." Lubricants 8, no. 12 (2020): 103. http://dx.doi.org/10.3390/lubricants8120103.

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The problem of climate change and the reduction of fossil fuels has motivated the development of research focused on improving the efficiency of internal combustion engines. This research proposes a methodology based on mathematical models to determine the energy losses caused by auxiliary systems and friction processes in the engine. Therefore, models are proposed for calculating the energy losses in fuel injection, lubrication, and cooling system. In the same way, models are proposed for the energy losses due to friction in the piston, valve train, and bearings. Experimental tests are carrie

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Merkisz, Jerzy, Jaroslaw Mizera, Maciej Bajerlein, Lukasz Rymaniak, and Piotr Maj. "The Influence of Laser Treatment and the Application of Reduced Pressure Force Piston Rings on the Engine Exhaust Emissions under the Conditions of Engine Lubrication with Different Engine Oils." Applied Mechanics and Materials 518 (February 2014): 102–7. http://dx.doi.org/10.4028/www.scientific.net/amm.518.102.

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The paper discusses the investigations on combustion engines that aim at the evaluation of the influence of engine design modifications on the exhaust emissions under application of lubricants of different physicochemical parameters. In the engines the authors applied laser treated cylinder liners, piston rings of reduced pressure force on the cylinder liner and optimized the assembling clearances in the slide bearings. The research was carried out in accordance with the ESC and ELR compliant procedures using different engine lubricants. The measurement series were performed for diesel engines

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Ma, M.-T., I. Sherrington, and E. H. Smith. "Implementation of an Algorithm to Model the Starved Lubrication of a Piston Ring in Distorted Bores: Prediction of Oil Flow and Onset of Gas Blow-By." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 210, no. 1 (1996): 29–44. http://dx.doi.org/10.1243/pime_proc_1996_210_475_02.

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Experimental evidence suggests that piston rings in internal combustion engines normally experience 'starved' lubrication at some points along their stroke. To take account of lubricant starvation (and hence move towards a full ring pack analysis), a 'flow continuity algorithm' has been incorporated into a non-axisymmetric lubrication model of a single ring. The algorithm allows both inlet and cavitation boundaries of the full film to be located, making it possible to predict the occurrence of gas blow-by through the ring face, particularly for distorted bores. In addition, oil availability ha

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Dissertations / Theses on the topic "Piston rings Lubrication systems Internal combustion engines"

1

Xu, Huijie. "Predictive modeling of piston assembly lubrication in reciprocating internal combustion engines." Thesis, 2005. http://hdl.handle.net/2152/2371.

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Conference papers on the topic "Piston rings Lubrication systems Internal combustion engines"

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Bade, Mehar, Nigel N. Clark, Terence Musho, and Parviz Famouri. "Piston Rings Friction Comparison in a Free Piston and Conventional Crankshaft Engines." In ASME 2018 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/icef2018-9774.

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The conventional internal combustion engines driven by crankshafts and connecting rod mechanisms are restrained by combustion, thermal and mechanical inefficiencies. The Oscillating Free Piston Linear Engine Alternator (OFPLEA) produces electric power with no need to modify the reciprocating motion to rotary motion. In the most common geometry it consists of a linear alternator driven cyclically by one or two internal combustion engines. With the elimination of crankshaft mechanism linkages, the free piston engine offers potential benefits over crankshaft engines in terms of total mechanical l

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Mahmoud, K. G., O. Knaus, T. Parikyan, and M. Patete. "Three Dimensional Ring Dynamics Modeling Approach for Analyzing Lubrication, Friction and Wear of Piston Ring-Pack." In ASME 2017 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icef2017-3586.

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The automotive industry is subjected to increasing pressure in order to improve fuel efficiency and reduce the CO2 emissions of internal combustion (IC) engines. The power cylinder system (piston, piston ring, and liner) contributes significantly to the friction losses, engine oil consumption and gas leakage called blow-by. The role of cylinder bore shape in engine performance has been the subject of several studies in recent years. High bore distortion must be avoided because it can lead to ring conformability issues, which leads to inadequate sealing resulting in increased blow-by and oil co

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Theaker, M., R. Rahmani, and H. Rahnejat. "Prediction of Ring-Bore Conformance and Contact Condition and Experimental Validation." In ASME 2012 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/ices2012-81021.

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One of the key conjunctions in the IC engine is that made by the top compression ring to the cylinder liner. Although the compression ring has seen considerable improvements since its introduction into steam engines by John Ramsbottom in the 1850s, its multiple and often contradictory functions still remain a challenge today. The primary aim has always been to seal the combustion chamber and guard against leakage of combustion gasses. The ring is also required to conduct some of the generated heat away. These requirements call for good ring-bore conformance, but often at the expense of increas

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Kapusuz, E., and B. Ekici. "Evaluation of the Effect of Gas Leakage on Operation of an Optical Engine." In ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2010. http://dx.doi.org/10.1115/esda2010-25076.

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An experimental and numerical study is carried out to evaluate the significance of gas leakage for a non-lube optically accessible internal combustion engine and to obtain estimation for the gas flow out of the combustion chamber at each engine cycle and its effect on the in-cylinder component states during optical engine’s operation. Attention is paid to blow-by and circumferential flow through the gaps between the piston rings and the liner. Optical engines are typically operated without lubrication to avoid window fouling and generation of fluorescence by oil particles that interfere with l

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Selby, K., M. Urbanak, D. Colbourne, et al. "Meeting the Lubrication Challenges of Heavy Duty Low Emission Diesel Engines." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63983.

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In recent years, legislative authorities in the US, Europe and Japan have steadily reduced engine exhaust emissions, i.e., carbon monoxide (CO), hydrocarbons (HC), sulphur, particulate matter (PM) and nitrogen oxides (NOx) to improve air quality. To meet these requirements engine manufacturers have had to make significant design changes and as a consequence new engine lubricant specifications from Industry bodies (ACEA, EMA, JAMA) and individual OEMs have had to be introduced to ensure adequate lubrication of these new engines. This has led to significant changes to heavy-duty diesel engine oi

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Cheng, Chao, Ali Kharazmi, Harold Schock, Richard Wineland, and Larry Brombolich. "Three Dimensional Piston Ring-Cylinder Bore Contact Modeling." In ASME 2014 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/icef2014-5672.

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Increasing durability, preventing knocking combustion, improving fuel efficiency and reducing pollutant emission characterize the needs for modern internal combustion engine design. These factors are highly influenced by the power cylinder system design. In particular, the piston ring to cylinder bore contact force distribution around the circumference of the piston rings must be optimized under all running conditions. To accomplish this, the ring manufacturers make the ring curvature non-constant along the circumference. Most existing analytical tools are not able to simulate the variation al

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Sato, Tokuro, Hideki Saito, Koji Korematsu, and Junya Tanaka. "Study on Wear of Piston Rings in Diesel Engines With Exhaust Gas Recirculation." In ASME 2001 Internal Combustion Engine Division Spring Technical Conference. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/ices2001-132.

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Abstract The wear of piston rings in the diesel engines with EGR system is studied experimentally. In order to clarify the effect of PM on the wear, the wear of the piston rings in the test engine is measured, (1) when the non-soluble in the lubricating oil is removed by the oil filters, (2) when PM in the re-circulating gas is removed by the DPF, (3) when the carbon black is added in the lubricating oil. The experimental results are discussed with the measured time history of kinematic viscosity, total base number, total acid number, ZDTP survival rate, and carbon residual content and its par

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Qiu, Yunchao, Qian Zou, Gary C. Barber, Harold E. McCormick, Dequan Zou, and Milad H. Mekari. "Wear Model for Piston Ring and Cylinder Bore System." In ASME 2005 Internal Combustion Engine Division Fall Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/icef2005-1340.

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A new wear model for piston ring and cylinder bore system has been developed to predict wear process with high accuracy and efficiency. It will save time and cost compared with experimental investigations. Surfaces of ring and bore were divided into small domains and assigned to corresponding elements in two-dimensional matrix. Fast Fourier Transform (FFT) and Conjugate Gradient Method (CGM) were applied to obtain pressure distribution on the computing domain. The pressure and film thickness distribution were provided by a previously developed ring/bore lubrication module. By changing the wear

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Rahmani, Ramin, Gema Styles, and Homer Rahnejat. "Meniscus Formation in the Piston Compression Ring-Cylinder Liner Inlet Zone." In ASME 2012 Internal Combustion Engine Division Fall Technical Conference. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/icef2012-92123.

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The piston compression ring-cylinder liner contact experiences a transient regime of lubrication. This comprises hydrodynamic, mixed (partial) or boundary interactions. The regime of lubrication is influenced by contact kinematics, loading, mechanical and topographical properties of the bounding solid surfaces, as well as lubricant rheology and its supply to feed the conjunction. Ideally, a sufficient volume of lubricant would exist at the conjunctional inlet, which acts as a meniscus, from which a film of lubricant is entrained into the contact area. However, often there is an insufficient vo

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Chui, Boon-Keat, Harold J. Schock, Andrew M. Fedewa, Dan E. Richardson, and Terry Shaw. "Coupled Model of Partially Flooded Lubrication and Oil Vaporization in an Internal Combustion Engine." In ASME 2005 Internal Combustion Engine Division Spring Technical Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/ices2005-1077.

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The cylinder-kit assembly of an internal combustion engine experiences severe conditions during engine operation. The top compression ring, in particular, undergoes extreme stress directly from cylinder gas pressure, inertial and thermal loads. The top compression ring is often the most significantly affected piston ring, and one of the common resultant phenomena is high wear on the ring/bore surfaces. In many previous studies, the modeling of tribological phenomena at the top compression ring/bore region involves hydrodynamic and boundary lubrication, friction and wear. This present work acco

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