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

1984-09-19

1985-09-17

Cuchlinski, Jr., William A.

Internal-combustion engines

Charge forming device

Multiple carburetors

123327, F02M 2304

Patent

active

045414009

ABSTRACT:
An air intake side secondary air supply system for an internal combustion engine includes an air control valve for controlling the amount of the secondary air and first and second pressure supply passages for respectively supplying a first control pressure for opening the air control valve and a second control pressure for closing the air control valve. A surge tank is provided in the first pressure supply passage for reducing the pulsation of pressure level and further the first and second pressure supply passages are made so that only the first control pressure is supplied through the first pressure supply passage and only the second control pressure is supplied through the second pressure supply passage. Thus, the delay of the closure of the air control valve which might cause unstable engine operation when the engine is decelerating is alleviated.

REFERENCES:
patent: 4325348 (1982-04-01), Abe et al.
patent: 4335699 (1982-06-01), Totsune et al.
patent: 4483308 (1984-11-01), Hasegawa

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