Importance

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Abstract

An exhaust gas recirculation venturi pump for drawing an exhaust gas from an exhaust manifold of an internal combustion engine through an exhaust gas recirculation system. The exhaust gas recirculation venturi pump includes a first passageway that at least in part is configured to provide a venturi effect using the flow of an air/fuel mixture through the exhaust gas recirculation venturi pump. At least the decrease in pressure of the air/fuel mixture created by the venturi effect may draw an exhaust gas from the exhaust manifold into the exhaust gas recirculation venturi pump. Moreover, the suction provided by the venturi effect may pull the exhaust gas through an exhaust gas recirculation system, even when the exhaust gas pressure at the exhaust gas manifold is equal to or greater than the pressure of the intake charge at the intake manifold.

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First Claim