Engine exhaust gas recirculation control mechanism

Details Engine exhaust gas recirculation control mechanism Engine exhaust gas recirculation control mechanism

1992-10-01

1994-08-02

Koczo, Michael

Power plants

Fluid motor means driven by waste heat or by exhaust energy...

With supercharging means for engine

123568, F02M 2507

Patent

active

053334566

ABSTRACT:
A turbocharged or supercharged engine is provided with a vacuum actuated control device for an exhaust gas recirculation valve. A venturi throat in the engine air intake passage generates a vacuum in response to air flow through the throat. The vacuum is varied according to variations in the air flow rate throughout the throat, such that the vacuum can be applied to a piston for adjusting the position of a metering valve in an exhaust gas recirculation passage. The vacuum controlled valve enables the gas recirculation rate to be varied as a function of the air flow rate through the engine air intake passage.

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