Internal-combustion engines – Poppet valve operating mechanism – Plural valve trains – single actuator
Patent
1987-07-10
1988-09-27
Cross, E. Rollins
Internal-combustion engines
Poppet valve operating mechanism
Plural valve trains, single actuator
123 904, 123 9044, 123 9027, F01L 126
Patent
active
047733608
ABSTRACT:
Each cylinder of an engine is provided with a pair of intake valves and a pair of exhaust valves arranged opposite each other in a V-like pattern and are driven by an overhead camshaft having an associate intake cam lobe for the intake valves and separate exhaust cam lobes on opposite sides of the intake cam lobe. A single direct acting bucket-type tappet journaled in the engine cylinder head is acted on by the intake cam lobe to control opening and closing movement of the pair of intake valves. Each exhaust valve is actuated by an associate intake cam lobe via a valve train that includes a tappet, push rod and a rocker arm, with an integral hydraulic lash adjuster, pivotably supported on a common rocker shaft.
REFERENCES:
patent: 4527518 (1985-07-01), Osaki et al.
patent: 4549510 (1985-10-01), Miyakoshi et al.
patent: 4558667 (1985-12-01), Inagaki et al.
patent: 4649874 (1987-03-01), Sonoda et al.
Cross E. Rollins
General Motors Corporation
Krein Arthur N.
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