Internal-combustion engines – Particular piston and enclosing cylinder construction – Cylinder detail
Patent
1990-08-31
1991-08-13
Dolinar, Andrew M.
Internal-combustion engines
Particular piston and enclosing cylinder construction
Cylinder detail
123 904, 123 9033, F02F 100
Patent
active
050387324
ABSTRACT:
A cylinder head of a DOHC internal combustion engine has intake and exhaust ports of a siamese shape. A pivot for a rocker arm of the end pivot type is installed in a pivot installation hole which is formed at a nearer point from each cylinder than the branched point of each of the intake and exhaust ports. With this arrangement, since the pivot installation hole can have a sufficient depth without deforming the shape of the intake port, each swinging end of the rocker arm for intake valves and that for the exhaust valves can be disposed opposite to each other. Therefore, the engine is improved with respect to its performances and size.
REFERENCES:
patent: 4649873 (1987-03-01), Amano
patent: 4754729 (1988-07-01), Abe et al.
patent: 4825822 (1989-05-01), Muranaka et al.
patent: 4913104 (1990-04-01), Mills
patent: 4951622 (1990-08-01), Takahashi et al.
Kamegaya Shigeru
Matayoshi Yutaka
Muranaka Shigeo
Dolinar Andrew M.
Macy M.
Nissan Motor Co,. Ltd.
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