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

1982-01-29

1983-12-27

Burns, Wendell E.

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

123569, F02M 2506

Patent

active

044224311

ABSTRACT:
In an exhaust gas recirculation system for an internal combustion engine having an intake manifold in which a throttle valve is disposed and an exhaust gas conduit provided with a particle trap for accumulatively catching particles entrained by exhaust gas discharged from the engine, a control valve apparatus which is disposed in a recirculation passage and connected to the intake manifold downstream of the throttle valve and to the exhaust gas conduit upstream of the particle trap. The control valve apparatus comprises a first control means which is adapted for controlling the exhaust gas recirculation on the basis of the vacuum pressure prevailing in the intake manifold downstream of the throttle valve, and a second control means which is adapted for cooperating with the first control means to maintain optimum exhaust gas recirculation despite an increase in the pressure of the exhaust gas caused by clogging of the particle trap.

REFERENCES:
patent: 4033306 (1977-07-01), Sugihara et al.
patent: 4116182 (1978-09-01), Bradshaw

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