Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1979-01-09
1981-03-24
Burns, Wendell E.
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
74860, 74856, F02B 4708, F02M 2500
Patent
active
042573815
ABSTRACT:
Exhaust gas recirculation system controlled by a microcomputer for an internal combustion engine comprises a pressure sensor for measuring the pressure of the exhaust gas downstream of an orifice disposed in the exhaust gas recirculation passage, a microcomputer for electrically controlling an electromagnetic valve which fluidly controls an exhaust gas recirculation control valve arranged in the exhaust gas recirculation passage, in view of the comparison of an optimal pressure of the exhaust gases, derived from the engine parameters, and the actual pressure measured by the sensor. The gear position of the transmission, engine temperature, engine speed, and the intake airflow rate are used in the microcomputer to produce an output signal with which the electromagnetic valve is controlled.
REFERENCES:
patent: 4008697 (1977-02-01), Konno
patent: 4058098 (1977-11-01), Onaka
patent: 4142495 (1979-03-01), Lahiff
patent: 4164032 (1979-08-01), Nohira et al.
patent: 4164207 (1979-08-01), Okitsu et al.
patent: 4173705 (1979-11-01), Toelle
Yano Tsuneomi
Yuzawa Haruo
Burns Wendell E.
Nissan Motor Company Limited
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