Exhaust gas purifying system

Details Exhaust gas purifying system Exhaust gas purifying system

1975-07-28

1976-12-14

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

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

F02B 7510

Patent

active

039967395

ABSTRACT:
An exhaust gas purifying system comprising diaphragm means operating a secondary air control valve and having first and second chambers, supply pressure changeover means operated by an operating mechanism for selectively supplying negative or positive pressure to the first chamber, thereby controlling the operation of the control valve to control supply of the secondary air to an exhaust system of an engine. Delay means is provided between the changeover means and the first pressure chamber to delay the operation of the control valve, thereby purifying the exhaust gas effectively at any operating condition of the engine.

REFERENCES:
patent: 3906723 (1975-09-01), Matumoto
patent: 3919843 (1975-11-01), Arnaud
patent: 3920041 (1975-11-01), Gropp
patent: 3931710 (1976-01-01), Hartel

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