OHC engine

Details OHC engine OHC engine

1995-09-06

1998-01-13

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Plural valve trains, single actuator

123 9027, 123195HC, 123572, F01L 112, F01L 126

Patent

active

057067694

ABSTRACT:
A single overhead cam (OHC) engine is provided in which intake and exhaust valves and intake and exhaust cam followers are disposed on opposite sides of a single valve operating cam which is disposed in a cylinder head. The intake and exhaust valves are parallel to each other and perpendicular to a crankshaft axis. The intake and exhaust cam followers are formed in a bifurcated configuration. One arm portions of the intake and exhaust cam followers extend inwardly towards each other, and contact the intake and exhaust valves, and other arm portions of the intake and exhaust cam followers also extend inwardly towards each other, and contact a cam face of the valve operating cam below a center C of rotation of the valve operating cam. With this arrangement, it is possible to reduce, in both size and cost, the head of the engine body in an OHC engine.

REFERENCES:
patent: 4714059 (1987-12-01), Masuda et al.
patent: 4984539 (1991-01-01), Shinoda et al.
patent: 5143033 (1992-09-01), Catterson et al.
patent: 5513606 (1996-05-01), Shibata

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