Rocker arm arrangement for internal combustion engine poppet val

Details Rocker arm arrangement for internal combustion engine poppet val Rocker arm arrangement for internal combustion engine poppet val

1989-08-15

1990-07-31

Myhre, Charles J.

Internal-combustion engines

Poppet valve operating mechanism

Valve driven closed

123 9039, 123 9044, 123 9046, F01L 130, F01L 118

Patent

active

049442562

ABSTRACT:
The first of a pair scissor like rocker arms is pivotally mounted at one end either by way of an adjust screw or a hydraulic lash adjuster and arangement to engage the top of a valve stem at the other. A cam follower which is located between the first and second ends engages a lift cam. The second of the rocker arms is pivotally mounted on the first one and has a closure cam follower at one end and engages the lower face of a retainer which secured to the top of the valve stem by way of a ring type collet. The shaft on which the second rocker arm is pivotally mounted can be provided with eccentric portions which enable the second rocker arm valve clearances to be adjusted separately from the adjustment of the first rocker arm clearance. The arrangement can be adapted to lift and close two valves.

REFERENCES:
patent: 2751895 (1956-06-01), Gassmann
patent: 2814283 (1957-11-01), Gassmann et al.
patent: 2824554 (1958-02-01), Sampietro
patent: 2831470 (1958-04-01), Lorscheidt
patent: 2833258 (1958-05-01), Lorscheidt et al.
patent: 3430614 (1969-03-01), Meacham
patent: 3626469 (1971-12-01), Ashley
patent: 4498432 (1985-02-01), Hara et al.
patent: 4763615 (1988-08-01), Frost
Patent Abstracts of Japan, vol. 10; No. 155, Jun. 4, 1986; Japanese Patent Application 61-11408.

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