EXHAUST GAS RECIRCULATION VALVE POWERED BY PRESSURE FROM AN OIL PUMP THAT POWERS A HYDRAULICALLY ACTUATED FUEL INJECTOR

摘要

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.