Multiple valve internal combustion engine

Details Multiple valve internal combustion engine Multiple valve internal combustion engine

1990-05-23

1991-05-28

Cross, E. Rollins

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

Air or combustible mixture entering the combustion chamber...

123 9027, F02M 3510

Patent

active

050184970

ABSTRACT:
A multiple valve engine and more particularly an improved combustion chamber and valve arrangement for such an engine that permits high compression ratios, good breathing and a smooth combustion chamber. There are provided three intake valves and two exhaust valves. The center intake valve is supported so that it reciprocates about an axis that lies in a plane containing the cylinder bore axis. The other valves are all inclined to each other so that adjacent edges between the valves will all lie in a common plane that extends perpendicularly to the cylinder bore axis to provide a smooth combustion chamber configuration. In addition, tapered cam lobes on the camshafts operate the angularly disposed valves. These tapered cam lobes have heel diameters that are larger than the adjacent bearing surfaces of the cams so that the cam lobes may be conveniently formed by grinding without damaging the bearing surfaces.

REFERENCES:
patent: 4651696 (1987-03-01), Yoshikawa
patent: 4660529 (1987-04-01), Yoshikawa
patent: 4932377 (1990-06-01), Lyles

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