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

1986-05-21

1987-04-28

Cuchlinski, Jr., William A.

Internal-combustion engines

Charge forming device

Auxiliary air or oxygen added to combustible mixture

123589, F02M 2310

Patent

active

046605339

ABSTRACT:
Air intake side secondary air supply system for an internal combustion engine includes first and second secondary air supply passages leading to an intake manifold in which an open/close valve and an air control valve are respectively provided for a proportional control and an integral control of secondary air. In order to improve a driveability of the engine when no load is applied to the engine when the engine temperature is low, the air control valve is supplied with a pressure for rapidly closing the second air intake side secondary air supply passage so as to stop at least the integral control of the feedback control of air/fuel ratio immediately when a no-load condition is detected during a cold operation of the engine.

REFERENCES:
patent: 4541400 (1985-09-01), Kobayashi et al.
patent: 4569318 (1986-02-01), Fujimura et al.
patent: 4584979 (1986-04-01), Fujimura et al.
patent: 4586481 (1986-05-01), Kishida et al.

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