Rocker arm with an oil groove

Details Rocker arm with an oil groove Rocker arm with an oil groove

1994-06-29

1995-03-07

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

Lubrication

123 9039, 74559, F01M 910

Patent

active

053948424

ABSTRACT:
An improved rocker arm which is held in positive engagement with a head thrust surface of a cylinder head to avoid the occurrence of pitching of a valve stem end and vibration or noise from a valve-driving system. The rocker arm enables a rocker shaft spring to be set at a reduced load, whereby low friction is realized. An arm thrust surface of the rocker arm is provided with an oil groove having a predetermined depth. The arm thrust surface is positioned against a head thrust surface of the cylinder head. The oil groove communicates with the rocker shaft hole so as to introduce oil outside.

REFERENCES:
patent: 4523551 (1985-06-01), Arai et al.
patent: 4616607 (1986-10-01), Kodama et al.
patent: 4630576 (1986-12-01), Raymond
patent: 4644914 (1987-02-01), Morita et al.

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