Internal-combustion engines – Poppet valve operating mechanism – Rocker
Patent
1987-07-09
1988-12-20
Wolfe, Willis R.
Internal-combustion engines
Poppet valve operating mechanism
Rocker
123 9041, 123 9044, F01L 118, F01L 126
Patent
active
047918934
ABSTRACT:
A two-fingered cam follower adapted to operate two valves in unison has sliding faces which are arranged in parallel with the plane in which the cam follower swings being driven by a cam. The cam follower is pivotally mounted on a hydraulic lash adjuster which is in turn mounted on a cylinder head. The cylinder head is provided with a pair of guide arms which are arranged so as to interpose therebetween the cam follower. The guide arms have on the inboard sides thereof guiding faces respectively matched with the sliding faces of the cam follower in such a manner that a clearance is provided between the matched sliding and guiding faces. By setting the clearance in such a manner as to satisfy a certain relation, the sliding and guiding faces can be held out of contact with each other during normal operating condition of the engine.
REFERENCES:
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patent: 3563215 (1971-02-01), Ross
patent: 3563216 (1971-02-01), Uemura
patent: 3613647 (1971-10-01), Mettig et al.
patent: 3690958 (1972-09-01), Thompson
patent: 3963004 (1976-06-01), Lysinger et al.
patent: 4614171 (1986-09-01), Malhotia
patent: 4672927 (1987-06-01), Uchida
Kamegaya Shigeru
Matayoshi Yutaka
Muranaka Shigeo
Nissan Motor Co,. Ltd.
Wolfe Willis R.
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