Keywords

Valve Train, Tappet Rotation, Cam/Tappet Interaction, Engine Tribology

Effect of Lubricant Rheology and Operating Conditions on the Rotating Speed of all the Tappets in a Mercedes Benz Engine

Engine valve train is one of the most difficult tribological components to lubricant effectively due to high contact stresses taking place at the cam and follower interface. The introduction of low viscosity oil for fuel economy purpose has further stressed the valve train components resulting in durability issues. One of the parameters that have a direct effect on the valve train performance and durability is the tappet rotation speed. Lack of reliable techniques resulted in researches and scientist performing experiments on modified test rigs.

Authors and Company/Institution

Riaz Ahmad Mufti, Rehan Zahid, Jawad Aslam, Naqash Afzal and Muhammad Usman Bhutta, School of Mechanical and Manufacturing Engineering, National University of Sciences and Technology, Islamabad, Pakistan
Farrukh Qureshi, The Lubrizol Corporation, Wickliffe, OH