Dynamic Friction in Cam/Tappet Lubrication Koninklijke/ Shell-Laboratorium, Sheel Research B. V., Amsterdam

Format:

Conference/Event

Author/Creator:

van Helden, A. K., author.

Conference Name:

SAE International Congress & Exposition (1985-02-25 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1985

Summary:

The valve train is an engine part which experiences severe lubrication and special effort is required to lubricate it effectively. We have investigated the role of oil composition with respect to the friction properties of a cam/tappet contact using a specially designed instrument. This tribometer determines friction during cam revolution by analysing time-dependent cam-shafttorque measurements.The friction coefficient depends on the position of the cam relative to the tappet, as predicted by the kinematics of the system. Boundary lubrication is predominant in positions close to top lift, whereas milder lubrication conditions occur at small lift. Data on some pure mineral oils and friction-modified oils are presented

Notes:

Vendor supplied data

Publisher Number:

850441

Access Restriction:

Restricted for use by site license