Patent ID: 6032643
Filing Date: 2000-03-07
Classification: F01L

Abstract:
A decompression engine brake device for use with an internal combustion engine, comprising:an exhaust valve arranged to open and close an exhaust port extending from a combustion chamber of the engine;a valve stem extending from said exhaust valve;a valve lifter slidably disposed in a cylinder head of the engine, said valve lifter having said valve stem in contact therewith;an exhaust cam shaft;an exhaust cam disposed about said exhaust cam shaft and operatively engageable with said valve lifter to actuate said exhaust valve in accordance with a contour of said exhaust cam;an engine brake cam defined by said exhaust cam;a plunger axially movably held by said valve lifter, said plunger having an upper end that is operatively engageable with said engine brake cam;a slider transversely movably held in said valve lifter, said slider having an inclined surface which a lower end of said plunger slidably contacts; andan actuating device for moving said slider in first and second directions thereby axially moving said plunger.