...Jun Sun; Xiao Zhang; Jianxiong Zhu; Yaming Gao; Hu Wang; Xiaoyong Zhao; Qin Teng; Yanping Ren; Guixiang Zhu Purpose Currently, lubrication analysis of piston ring is generally done under engine rated operating condition. However, the engine (such as the vehicle engine) does not always operate...

...Selman Demirtas; Hakan Kaleli; Mahdi Khadem; Dae-Eun Kim Purpose This study aims to investigate the tribological characteristics of a Napier-type second piston ring against a cylinder liner in the presence of graphene nano-additives mixed into 5W40 fully synthetic engine oil. Design/methodology...

...H.K. Trivedi; D.V. Bhatt Purpose The purpose of this paper is to study about tribological parameters of cylinder liner/piston ring under sliding contact in the presence of lubricant. Design/methodology/approach A reciprocating test rig is used for the experimental work. The Taguchi approach...

...Zhinan Zhang; Jun Liu; Yihu Tang; Xianghui Meng Purpose – This study aims at proposing an approach for optimizing the shape of the top piston ring face for minimum friction force using an inverse method. The shape of the top piston ring face determines the amount of oil distribution...

...Mukesh A. Bulsara; Dhananjay V. Bhatt; Kishore N. Mistry Purpose – The purpose of this paper is to present a measurement technique wherein the film thickness is measured in unfired condition for entire stroke length but without impairing the original condition of piston ring, liner and lubricant...

...Mukesh A. Bulsara; Dhananjay V. Bhatt; Kishore N. Mistry Purpose The aim of this paper is to develop a technique to measure the oil film thickness between piston ring and liner throughout the stroke, without impairing the surface properties of the piston ring and liner. Mechanical properties...