Vacuum delay/relief valve

Details Vacuum delay/relief valve Vacuum delay/relief valve

1975-04-24

1977-03-08

Husar, C. J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

1375133, F02P 510, F16K 2102

Patent

active

040107213

ABSTRACT:
A device for use in an internal combustion engine for reducing emissions and for improving engine performance and economy having valve means for restricting air flow from the carburetor spark port to the vacuum advance cylinder at moderate acceleration to delay spark retard and for permitting unrestricted air flow at substantially full throttle acceleration to provide normal spark retard.

REFERENCES:
patent: 2650581 (1953-09-01), Short et al.
patent: 3476094 (1969-11-01), Rucins et al.
patent: 3678907 (1972-07-01), Vartanian
patent: 3699936 (1972-10-01), Vartanian
patent: 3729132 (1973-04-01), Ludwig

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