Cover for the valve rocker compartment of internal combustion en

Details Cover for the valve rocker compartment of internal combustion en Cover for the valve rocker compartment of internal combustion en

1989-05-10

1990-05-01

Myhre, Charles J.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123574, F02B 2506

Patent

active

049209434

ABSTRACT:
A cover for a valve rocker compartment of an internal combustion engine which comprises a hollow shaped casing (9) for closing the compartment containing the rockers (6) which operate the engine intake and exhaust valves (22; 33), and a duct system which connects the shaped casing to the engine air intake manifold (2). The duct system is intercepted by a valving member (31) which is maintained in the open positiion by an elastic member of predetermined load, but closes said duct system when the vacuum in the manifold reaches an undesirable value.

REFERENCES:
patent: 3123060 (1964-03-01), Daigh
patent: 3839996 (1974-10-01), DeBiasse
patent: 4345573 (1982-08-01), Obata
patent: 4603673 (1986-08-01), Hiraoka et al.
patent: 4607604 (1986-08-01), Kanoh et al.
patent: 4686946 (1987-08-01), Umeda et al.
patent: 4760833 (1988-08-01), Tatyrek

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