Cardanic Rocker Arms-A Method to Reduce Valve Train Friction Fluid Mechanics Dept.General Motors Research Laboratories Warren, Ml

Format:

Conference/Event

Author/Creator:

Rosenberg, Richard C., author.

Conference Name:

SAE International Congress & Exposition (1988-02-29 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1988

Summary:

Cardanic rocker arms provide a rolling action at the rocker-arm pivot. This simple design concept is able to reduce friction at this interface by replacing sliding friction with rolling friction. Substantial reductions in valve train friction result, and the measurable improvement in vehicle fuel economy is 1 to 2 percent. To ensure rolling motion over the range of action, it is necessary to include a restraining element in the design. Several restraining elements have been investigated and the final design includes a simple alignment system integrated into the pivot. Numerous tests have demonstrated that a configuration consisting of a stamped rocker arm and a powdered metal pivot meets passenger car engine durability requirements

Notes:

Vendor supplied data

Publisher Number:

880569

Access Restriction:

Restricted for use by site license