Internal combustion engine cylinder head

Details Internal combustion engine cylinder head Internal combustion engine cylinder head

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.

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