Exhaust gas recirculation system having a solenoid duty compensa

Details Exhaust gas recirculation system having a solenoid duty compensa Exhaust gas recirculation system having a solenoid duty compensa

1979-07-09

1980-11-18

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2506, F07B 300

Patent

active

042339472

ABSTRACT:
The duty cycle of a driving pulse signal applied to an electromagnetic valve which controls the recirculation rate of the exhaust gas of an internal combustion engine, is compensated for by a compensation signal produced in accordance with the difference of the voltage of the power supply and a predetermined voltage so that the actual working period of the electromagnetic valve is adjusted optimally irrespectively of the deviation of the voltage of the power supply from the predetermined voltage, thereby providing the most suitable recirculation rate of the exhaust gas.

REFERENCES:
patent: 3799133 (1974-03-01), Frank
patent: 3963011 (1976-06-01), Saito et al.
patent: 4040397 (1977-08-01), Leichle
patent: 4140084 (1979-02-01), Di Nunzio
patent: 4168683 (1979-09-01), Hata et al.

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