Exhaust gas recirculation valve control system and method

Details Exhaust gas recirculation valve control system and method Exhaust gas recirculation valve control system and method

1979-05-25

1982-03-30

Gruber, Felix D.

Boots, shoes, and leggings

123568, 123571, F02M 2506, G05B 1502

Patent

active

043227996

ABSTRACT:
An exhaust gas recirculation system comprises a speed detector for generating an engine rotational speed signal and a reference rotational position detection signal, a pressure sensor for detecting the negative pressure in the intake pipe of an engine to generate a negative pressure signal, a microcomputer responsive to the negative pressure signal and the rotational speed signal generated at the reference rotational position of the engine to compute an amount of exhaust gas recirculation in synchronism with the reference rotational position detection signal, and an electronic control circuit for controlling the opening of an exhaust gas recirculation control valve in accordance with the computed amount.

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patent: 4161929 (1979-07-01), Nohira et al.
patent: 4163282 (1979-07-01), Yamada et al.
patent: 4164032 (1979-08-01), Nohira et al.
patent: 4164206 (1979-08-01), Toelle
patent: 4173205 (1979-11-01), Toelle
patent: 4177777 (1979-12-01), Maruyama et al.
patent: 4181944 (1980-01-01), Yamauchi et al.
patent: 4210112 (1980-07-01), Nakamura et al.
patent: 4226222 (1980-10-01), Kohama et al.
Morris et al.: Scamp Microprocessor aims to replace Mechanical Logic, Electronics Sep. 18, 1975 pp. 81-87.

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