Internal-combustion engines – Charge forming device – Crankcase vapor used with combustible mixture
Patent
1983-10-11
1984-10-30
Burns, Wendell E.
Internal-combustion engines
Charge forming device
Crankcase vapor used with combustible mixture
123568, F02M 2506
Patent
active
044794789
ABSTRACT:
A device is disclosed for controlling the recirculation of exhaust gas for an internal combustion engine 1 in which an air-fuel mixture intake pipe 2 and an exhaust pipe 3 are connected with each other by a recirculation circuit having a main valve 4 and connecting pipes 5 and 6. This valve 4 is controlled by the partial vacuum prevailing at the venturi V of the intake pipe 2 by a solenoid valve 14. According to the invention, this control device includes a control system 13 having an additive type pneumatic amplifier 17 that generates a partial vacuum signal for the control of this main valve 4 whose strength is greater than the value of partial vacuum at the nozzle 16 of the venturi throat V, with a constant value in a range of extended operation. Application is particularly to internal combustion engines equipped with a system for recirculation of exhaust gas.
REFERENCES:
patent: 3730156 (1973-05-01), Sarto
patent: 3998194 (1976-12-01), Berzlana
patent: 4106467 (1978-08-01), Yamashita et al.
patent: 4165722 (1979-08-01), Aoyama
patent: 4325378 (1982-04-01), Abe
patent: 4380988 (1983-04-01), Otsuka et al.
Burns Wendell E.
Regie Nationale des Usines Renault
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