Engine deceleration vacuum differential valve control

Details Engine deceleration vacuum differential valve control Engine deceleration vacuum differential valve control

1974-01-04

1976-05-11

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

123 97B, 123117A, 123119A, 123124R, F02B 7510

Patent

active

039553647

ABSTRACT:
A valve located in an engine intake manifold vacuum line is operated by differential vacuum forces to temporarily open an air bleed during engine deceleration high manifold vacuums to apply atmospheric pressure to a vacuum controlled unit that then bypasses air away from a catalytic converter and the engine to protect the converter and prevent backfire.

REFERENCES:
patent: 2993484 (1961-07-01), Gallman
patent: 3364909 (1968-01-01), Mick
patent: 3433242 (1969-03-01), Voorheis
patent: 3470855 (1969-10-01), Seggern
patent: 3648455 (1972-03-01), Muroki
patent: 3712279 (1973-01-01), Vartanian
patent: 3738109 (1973-06-01), Tatsutomi
patent: 3768452 (1973-10-01), Lewis

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