Patent ID: 6050248
Filing Date: 2000-04-18
Classification: F02M

Abstract:
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.