Air intake side secondary air supply system for an internal comb

Details Air intake side secondary air supply system for an internal comb Air intake side secondary air supply system for an internal comb

1985-01-03

1986-02-04

Cuchlinski, Jr., William A.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

123589, F02M 2304

Patent

active

045678731

ABSTRACT:
The so called air intake side secondary air supply system for an internal combustion engine, having first and second secondary air supply passages leading to an intake air passage on downstream side of a throttle valve is provided with a delay device in the second secondary air supply passage on upstream side of an open/close valve disposed in the second secondary air supply passage, and a pressure supply passage which provides communication between a pressure chamber of an air control valve disposed in the first secondary air supply passage and a part of the second secondary air supply passage between the delay device and the open/close valve. Thus, one of the secondary air supply passages is utilized as a passage for introducing a vacuum into the pressure chamber of the air control valve and the open/close valve is used as a switch device for switching over between the atmospheric pressure and the vacuum which are to be introduced into the pressure chamber of the air control valve.

REFERENCES:
patent: 4483308 (1984-11-01), Hasegawa
patent: 4495922 (1985-01-01), Fujimura et al.
patent: 4503834 (1985-03-01), Hasegawa

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