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公开(公告)号：US20180347413A1
公开(公告)日：2018-12-06
申请号：US15612563
申请日：2017-06-02
发明人： Todd Simcina , Bradley P. Bergsma , Justin LaPorte , Rong Zhang
CPC分类号： F01L1/2416 , F01L1/047 , F01L1/053 , F01L1/146 , F01L1/18 , F01L1/185 , F01L1/2405 , F01L9/025 , F01L2001/2427 , F01L2105/00 , F01L2810/03
摘要： A variable valve train module selectively controls the opening and closing of a valve of an engine. The variable valve train module includes a drive element configured to be driven by a cam which rotates on a camshaft, a pump which is driven by the drive element, and a hydraulic control unit. The hydraulic control unit is configured to control the engine valve. The hydraulic control unit has a high pressure chamber containing hydraulic fluid which is selectively pressurized by the pump. The hydraulic control unit also has a control valve which is configured to depressurize the high pressure chamber, and a damper which is configured to increase an effective volume of the high pressure chamber when a pressure in the high pressure chamber exceeds a threshold value.
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公开(公告)号：US10415436B2
公开(公告)日：2019-09-17
申请号：US15612563
申请日：2017-06-02
发明人： Todd Simcina , Bradley P. Bergsma , Justin LaPorte , Rong Zhang
摘要： A variable valve train module selectively controls the opening and closing of a valve of an engine. The variable valve train module includes a drive element configured to be driven by a cam which rotates on a camshaft, a pump which is driven by the drive element, and a hydraulic control unit. The hydraulic control unit is configured to control the engine valve. The hydraulic control unit has a high pressure chamber containing hydraulic fluid which is selectively pressurized by the pump. The hydraulic control unit also has a control valve which is configured to depressurize the high pressure chamber, and a damper which is configured to increase an effective volume of the high pressure chamber when a pressure in the high pressure chamber exceeds a threshold value.
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