초록 ▼

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 en

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.

대표청구항 ▼

[ What is claimed is:] [1.] An engine assembly, comprising:an engine air inlet;an engine exhaust outlet;an injector oil pump having a pump outlet, said injector oil pump generating an operational pressure at said pump outlet;a fuel injector having an injector oil inlet, and an injector piston, where

[ What is claimed is:] [1.] An engine assembly, comprising:an engine air inlet;an engine exhaust outlet;an injector oil pump having a pump outlet, said injector oil pump generating an operational pressure at said pump outlet;a fuel injector having an injector oil inlet, and an injector piston, wherein (1) said injector oil inlet is in fluid communication with said pump outlet of said injector oil pump, and (2) said operational pressure at said pump outlet is used to move said injector piston from (i) a low pressure position in which fuel is prevented from being advanced out of said fuel injector, to (ii) a high pressure position in which fuel is advanced out of said fuel injector; anda valve assembly having (1) a valve oil inlet which is in fluid communication with said pump outlet, (2) an exhaust gas inlet, and (3) an exhaust gas outlet, wherein (i) said valve assembly is positionable between a first valve position and a second valve position, (ii) said exhaust gas inlet is isolated from said exhaust gas outlet when said valve assembly is positioned in said first valve position, (iii) said exhaust gas inlet is in fluid communication with said exhaust gas outlet when said valve assembly is positioned in said second valve position, and (iv) said operational pressure at said pump outlet is used to move said valve assembly from said first valve position to said second valve position.