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US 10,550,740 B2Granted
Multifunctional engine brake
AssigneeShanghai Universoon Autoparts Co., Ltd.
InventorsZhou Yang, Rujie Zhu, Yong Xi
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AssigneeShanghai Universoon Autoparts Co., Ltd.
InventorsZhou Yang, Rujie Zhu, Yong Xi
Estimating the term…
A multifunctional engine brake, comprising an engine valve motion transformation mechanism, a slow seating mechanism (250), and a timing oil control mechanism. By axially moving a roller (235) on a roller shaft (231), the connections between the roller (235) and different cams (230, 2302) are switched, so as to implement the transformation between different engine valve motions. A roller axial driving mechanism (100) is disposed in the roller shaft (231), thereby achieving a simple and compact structure, a symmetrical and reliable force, and easy manufacturing and assembling. The timing oil control mechanism provides timing oil supply or discharge for the engine brake, thereby eliminating the randomness of the opening or closing of a conventional engine brake, avoiding slipping and impact of the roller during roller translation, and improving the reliability and durability of the brake and engine. The slow seating mechanism (250) effectively reduces and controls the seating speed of the valve, thereby eliminating the compact within the mechanism. The brake can be used for different types of variable valve motions, comprising valve motions generating 4-stroke braking, 2-stroke braking, or 1.5-stroke braking.
A multifunctional engine brake comprising an engine valve motion conversion mechanism, wherein the engine valve motion conversion mechanism comprises camshaft, roller, roller shaft, roller shaft housing and an axial roller drive mechanism, wherein the camshaft has two or more different cams, wherein the roller shaft housing has a roller groove, wherein the two ends of the roller shaft are installed into the roller shaft housing, wherein the middle of the roller shaft spans the roller groove, wherein the length of the roller shaft in the roller groove is longer than the axial length of the roller, wherein the roller is arranged on the roller shaft in a rotatable way, wherein the roller is also slidable along the roller shaft, the roller has two or more axial positions on the roller shaft, wherein the axial roller driving mechanism comprises a piston driving mechanism arranged in the roller shaft, wherein the piston driving mechanism in the roller shaft moves the roller from one axial position to another axial position on the roller shaft, and wherein different engine valve motions are generated by switching the links between the roller and the different cams.
An oil control timing method for driving an engine brake, comprising an oil control timing process using an oil control timing mechanism to control an oil feeding time or an oil discharging time of the engine brake, the engine brake comprises a no-timing brake oil feed valve, the oil control timing mechanism comprises a timing oil passage connecting the brake oil feed valve with a timing valve system, the timing valve system controls the timing or phase of oil filling or oil discharging of the engine brake, wherein the oil control timing process comprises the following steps:
A multifunctional engine brake, comprising
Dependencies are inferred from the claim text.