초록 ▼

An internal combustion engine may include a hydraulic linkage used to transfer motion from a valve train element, such as a cam, to an engine valve. Method and apparatus for selectively limiting the motion transferred by the hydraulic linkage from the valve train element to the engine valve are disc

An internal combustion engine may include a hydraulic linkage used to transfer motion from a valve train element, such as a cam, to an engine valve. Method and apparatus for selectively limiting the motion transferred by the hydraulic linkage from the valve train element to the engine valve are disclosed. The hydraulic linkage may comprise means for resetting or clipping the displacement of the engine valves into the engine cylinder following a compression release event. The hydraulic linkage may also limit the displacement of the engine valves into the engine cylinder for main exhaust and/or other valve events, as well as limit the overlap between a main exhaust valve event and an intake valve event.

대표청구항 ▼

[ We claim:] [1.] An engine braking system, for providing a main exhaust valve event and a compression release valve event in an internal combustion engine, comprising:a unitary cam lobe for imparting motion for a main exhaust valve event and a compression release valve event to an engine valve;mean

[ We claim:] [1.] An engine braking system, for providing a main exhaust valve event and a compression release valve event in an internal combustion engine, comprising:a unitary cam lobe for imparting motion for a main exhaust valve event and a compression release valve event to an engine valve;means for mechanically transferring motion from said unitary cam lobe to the engine valve;means for hydraulically transferring motion from said unitary cam lobe to the engine valve, said hydraulically transferring means being capable of transferring motion independently of said mechanically transferring means; andmeans for controlling the amount of motion transferred by said hydraulically transferring means to the engine valve such that the motion transferred by said hydraulically transferring means is less than the motion transferred by said mechanically transferring means during the main exhaust valve event.