Secondary air control system for internal combustion engine

Details Secondary air control system for internal combustion engine Secondary air control system for internal combustion engine

1993-02-04

1994-09-13

Hart, Douglas

Power plants

Internal combustion engine with treatment or handling of...

By means producing a chemical reaction of a component of the...

F01N 330

Patent

active

053457633

ABSTRACT:
In an internal combustion engine having a catalytic converter incorporated in an exhaust passage thereof, there is provided a secondary air control system. The control system comprises an electric air pump by which secondary air is fed to the exhaust passage. An intake air amount detecting device is provided for detecting the amount of air fed to the engine through an intake passage of the engine. A control unit is provided for controlling the voltage applied to the air pump in accordance with the amount of air detected by the intake air amount detecting device. The control is so made that the amount of secondary air fed to the exhaust passage by the air pump is substantially proportional to the amount of air detected by the intake air amount detecting device.

REFERENCES:
patent: 3750401 (1973-08-01), Nambu
patent: 3862540 (1975-01-01), Harvey
patent: 3962867 (1976-06-01), Ikeura
patent: 5140810 (1992-08-01), Kuroda

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