Mutual influence of cross hatch angle and superficial roughness of honed surfaces on friction in ring-pack tribo-system
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The cylinder bore surface texture, widely produced by the honing technique, is an essential factor for a good engine performance (friction, oil consumption, running-in, wear etc.). This explains the improvement and development of various new honing techniques. These different honing processes generate surfaces with various texture features characteristics (roughness, valleys depth, cross hatch angle, etc.). This paper addresses a comparison of ring-pack friction for cylinder surfaces produced by plateau honing and helical slide honing. It takes in consideration the mutual effect of superficial plateau roughness amplitude and honing angle. A numerical model is developed to predict friction within the cylinder ring-pack system in mixed lubrication regime. The results show the effectiveness of helical slide honed surface texture in comparison to plateau honed bore surfaces
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DEMIRCI, Ibrahim; MEZGHANI, Sabeur; YOUSFI, Mohammed; ZAHOUANI, Hassan; EL MANSORI, Mohamed (2013)The reduction of friction and the limitation of emissions of greenhouse gases are the main objectives of the automotive industry. This energy e ciency is related to functionalization of the surface of ringpack tribo-system. ...
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Smoothness and plateaudness contributions to the running-in friction and wear of stratified helical slide and plateau honed cylinder liners YOUSFI, Mohammed; MEZGHANI, Sabeur; DEMIRCI, Ibrahim; EL MANSORI, Mohamed (Elsevier, 2015)Cylinder liner surface has a great influence on frictional and wear performances of combustion engines during the running-in period. Two surface texture anisotropies produced by plateau honing (PH) and helical slide honing ...