Apparatus for controlling the amount of secondary air fed into a

Details Apparatus for controlling the amount of secondary air fed into a Apparatus for controlling the amount of secondary air fed into a

1978-10-02

1981-02-17

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

Having means analyzing composition of exhaust gas

60289, 123589, F01N 310, F02M 2304

Patent

active

042507065

ABSTRACT:
Disclosed is an apparatus for controlling the amount of secondary air fed into an internal combustion engine. This apparatus includes means for causing a sudden change of the level of the absolute pressure signal for driving the secondary air flow control means each time the level of the output voltage of the air-fuel ratio sensor changes. Thus, the equivalent air-fuel ratio is maintained for a long time within a desired range so that the highest purifying efficiency of the three-way catalytic converter can be attained.

REFERENCES:
patent: 4104879 (1978-08-01), Nohira
patent: 4112678 (1978-09-01), Miyagi
patent: 4137714 (1979-02-01), Takeda
patent: 4159626 (1979-07-01), Shibata
patent: 4162612 (1979-07-01), Mitsuda

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