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公开(公告)号：US11486273B2
公开(公告)日：2022-11-01
申请号：US17419258
申请日：2018-12-29
发明人： Fei Wang , Cheng Xu , Zhongsheng Ren , Baojun Wang , Deshi Xu , Gang Wang
摘要： A variable valve driving mechanism of an engine includes a rocker arm configured to control open and close of a valve and a servo rocker arm arranged in parallel to the rocker arm. A swing end of the servo rocker arm extends to the top of the swing end of the rocker arm. A valve adjustment gap provided in the swing direction of the servo rocker arm and the rocker arm is formed between the servo rocker arm and the rocker arm. A gap compensating device telescopically filling the valve adjustment gap and configured to adjust the valve to be delayed to close or open in advance when extending to the valve adjustment gap is provided between the servo rocker arm and the rocker arm.
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公开(公告)号：US11891924B2
公开(公告)日：2024-02-06
申请号：US18025402
申请日：2020-12-07
发明人： Shenggang Guo , Fei Wang , Cheng Xu
CPC分类号： F01L1/181 , F01L1/2411 , F01L13/06 , F01L1/267 , F01L2001/2444
摘要： A rocker arm mechanism includes a rocker arm shaft, a rocker arm, a valve clearance adjuster, a valve train, and a control valve. The rocker arm is rotatably disposed on the rocker arm shaft. The valve train includes a valve bridge. The rocker arm is provided with a plunger chamber. The valve clearance adjuster includes a hydraulic tappet slidably disposed in the plunger chamber. The plunger chamber is supplied with oil through an oil supply passage. The control valve is configured to open or close the oil supply passage. When the control valve opens the oil supply passage, the hydraulic tappet can abut against the valve bridge and eliminate the clearance between the valve bridge and the hydraulic tappet.
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