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

1984-03-08

1985-12-17

Feinberg, Craig R.

Internal-combustion engines

Charge forming device

Multiple carburetors

123587, F02M 2304

Patent

active

045586829

ABSTRACT:
An air intake side secondary air supply system for an internal combustion engine provided with an air/fuel ratio feedback control operation, comprises a pressure responsive air control valve which controls the communication through a secondary air supply passage, i.e., the amount of the air intake side secondary air supplied to the engine. A first control pressure for opening the air control valve and a second control pressure for closing the air control valve is alternately supplied to the air control valve in accordance with a detected state of the air/fuel ratio of the engine. The system is further provided with a device for respectively controlling the speed of the supply of the first and second control pressure, which in turn causes the variation of the speed of the air/fuel ratio control.

REFERENCES:
patent: 4156415 (1979-05-01), Zeller et al.
patent: 4249505 (1981-02-01), Nishimura
patent: 4335699 (1982-06-01), Totsune et al.

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