Exhaust gas recirculation system for internal combustion engine

Details Exhaust gas recirculation system for internal combustion engine Exhaust gas recirculation system for internal combustion engine

1979-11-26

1981-06-23

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

123568, F02B 4708

Patent

active

042743850

ABSTRACT:
An exhaust gas recirculation system for an internal combustion engine for automotive use, wherein a diaphragm-operated recirculation rate control valve adapted to control the exhaust gas recirculation rate depending upon the relationship between the pressure of the exhaust gases passed through an orifice and a vacuum developed in the mixture supply system of the engine is used in combination with a solenoid and diaphragm operated vacuum compensating valve which is not only responsive to the pressure of the exhaust gases passed through the orifice but is controlled by a microcomputer responsive to various operational parameters of the engine so that the vacuum to be developed in the recirculation rate control valve is compensated to be optimum for operating conditions of the engine.

REFERENCES:
patent: 4163435 (1979-08-01), Nakajima et al.
patent: 4164918 (1979-08-01), Haka
patent: 4177777 (1979-12-01), Maruyama
patent: 4185607 (1980-01-01), Thornburgh
patent: 4186702 (1980-02-01), Day
patent: 4186703 (1980-02-01), Haka et al.
patent: 4195531 (1980-04-01), Okamura
patent: 4210112 (1980-07-01), Nakamura et al.
patent: 4224909 (1980-09-01), Toyama et al.

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