Automotive exhaust gas recirculation valve

Details Automotive exhaust gas recirculation valve Automotive exhaust gas recirculation valve

F - Mech Eng,Light,Heat,Weapons

02

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123/98.04

F02M 25/06 (2006.01) F02M 9/133 (2006.01) F02M 25/07 (2006.01)

Patent

CA 1084366

AUTOMOTIVE EXHAUST GAS RECIRCULATION VALVE Abstract of the Disclosure An exhaust gas recirculation valve for installation in the recirculation flow path between the exhaust and intake manifolds of an internal combustion engine. A metering control in the form of an axially displaceable pintle is operative in the flow path of a throat body to form an annular convergent-divergent nozzle. Pintle movement is responsive to predetermined engine variables to vary the throat flow area for continuously maintaining sonic gas flow therethrough. By the pintle being disposed toward clos- ing the throat in a direction counter to the direction of in- coming gas flow, sonic flow can be maintained at high efficiency throughout the full range flow capacity required of the valve. 1a

303548

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