发明授权
- 专利标题: Hydraulic valve control apparatus for internal combustion engines
- 专利标题(中): 内燃机液压阀控制装置
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申请号: US730792申请日: 1991-07-25
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公开(公告)号: US5263441A公开(公告)日: 1993-11-23
- 发明人: Helmut Rembold , Ernst Linder
- 申请人: Helmut Rembold , Ernst Linder
- 申请人地址: DEX Stuttgart
- 专利权人: Robert Bosch GmbH
- 当前专利权人: Robert Bosch GmbH
- 当前专利权人地址: DEX Stuttgart
- 优先权: DEX3939065 19891125
- 主分类号: F01L9/02
- IPC分类号: F01L9/02 ; F01L1/12 ; F02D13/02
摘要:
A hydraulic valve control apparatus in an embodiment for multi-cylinder internal combustion engine having a reservoir chamber, assigned to a pressure chamber of a valve tappet and having a reservoir piston that serves as a valve, with which the reservoir chamber can be separated from the pressure chamber. The reservoir piston is shifted out of its position of repose to a reservoir function by a hydraulic thrust that is conducted in the reservoir chamber under the control of a magnet valve, via a control line in which a check valve is disposed. Displacement of the reservoir piston occurs only whenever a valve actuation takes place via the drive cam and as a result the working pressure adequate for the displacement of the reservoir piston prevails in the pressure chamber.