Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Patent
1997-12-03
2000-04-18
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
12356826, 123446, F02M 2507
Patent
active
060502487
ABSTRACT:
An engine assembly includes a valve assembly which selectively enables exhaust gas to be recirculated from an engine exhaust outlet to an engine air inlet. The valve assembly is positionable between a first valve position and a second valve position. The engine exhaust outlet is isolated from the engine air inlet when the valve assembly is positioned in the first valve position. The engine exhaust outlet is in fluid communication with the engine air inlet when the valve assembly is positioned in the second valve position. Operational pressure generated by the injector oil pump of the engine assembly is used to move the valve assembly from the first valve position to the second valve position. A method of controlling a flow of engine exhaust in an internal combustion engine is also disclosed.
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Arulraja Mylvaganam
Feucht Dennis D.
Kroeger Craig A.
Caterpillar Inc.
Wolfe Willis R.
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