Switchable flat or roller tappet to transmit cam stroke to tappet push rod has two-part anti-turning locking component located in tappet housing and inner element, and forming relative position stopThe tappet (1) has a housing (2) and an inner element (4), and a first and second body ...
A multi-body model of the system is presented to take into account the complex tappet motions. A set of such models is presented in order to predict the cam €" tappet friction force, the tappet €" tappet bore friction force and the resulting tappet spin. The tribological conditions giving...
Taraza, Combined multi-body dynamics and experimental investigation for determination of the cam-flat tappet contact condition, Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics 218 (2004) 133-142.
A ring on flat test is used to simulate valvetrain tribological conditions. The ring on flat test has allowed to replicate the sliding speed, the contact pressure, roughness and nature of antagonists as in a cam/tappet contact. The tests are done at a contact pressure of 530 MPa and ...
The cam may, in that area, have an inclined flat portion (16). The recess may be surrounded by a rim (12) whose height is reduced (20) at two diametrically opposite points. The flattened cam area is preferably arranged in the region which passes over the tappet during the combustion ...