Mutual influence of cross hatch angle and superficial roughness of honed surfaces on friction in ring-pack tribo-system
Article dans une revue avec comité de lecture
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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Smoothness and plateaudness contributions to the running-in friction and wear of stratified helical slide and plateau honed cylinder liners Article dans une revue avec comité de lectureYOUSFI, 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 ...
Article dans une revue avec comité de lectureDEMIRCI, Ibrahim; MEZGHANI, Sabeur; YOUSFI, Mohammed; EL MANSORI, Mohamed (American Society of Mechanical Engineers, 2014-01)Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for ...
Article dans une revue avec comité de lectureMEZGHANI, Sabeur; DEMIRCI, Ibrahim; YOUSFI, Mohammed; EL MANSORI, Mohamed (Elsevier, 2013)The texture change during running-in alters the performance and efficiency of a tribo-mechanical system. During mass production of cylinder liners, a final finishing stage known as ‘‘plateau honing’’ is commonly added to ...
Tribological performances of elliptic and circular texture patterns produced by innovative honing process Article dans une revue avec comité de lectureYOUSFI, Mohammed; MEZGHANI, Sabeur; DEMIRCI, Ibrahim; EL MANSORI, Mohamed (Elsevier, 2016)Honing is a manufacturing process which uses friction and abrasion mechanisms at a reduced velocity to print a multiscale and anisotropic texture on the liner surface of automotive engines. It enables to enhance the ...
Communication avec acteDEMIRCI, 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. ...