Invention Grant
- Patent Title: Hydraulic valve play compensation element
- Patent Title (中): 液压阀打补偿元件
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Application No.: US11370633Application Date: 2006-03-08
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Publication No.: US07328676B2Publication Date: 2008-02-12
- Inventor: Oliver Schnell , Christian Schaefer , Peter Sailer
- Applicant: Oliver Schnell , Christian Schaefer , Peter Sailer
- Applicant Address: DE Herzogenaurach
- Assignee: Schaeffler KG
- Current Assignee: Schaeffler KG
- Current Assignee Address: DE Herzogenaurach
- Agency: Volpe and Koenig, PC
- Priority: DE102005010711 20050309
- Main IPC: F01L1/14
- IPC: F01L1/14

Abstract:
A hydraulic valve play compensation element for an internal combustion engine is provided as a reverse-spring/free-ball element, with a cylindrical housing, a cylindrical piston (21) guided therein with sealing play and a control valve (20), which is arranged between a low-pressure chamber (22) of the piston (21) and a high-pressure chamber (24) of the housing, on a piston head (25) of the piston and which has a closing body (27), which can contact a valve seat (26) surrounding an axial bore hole (23) of the piston head (25) when carrying out a stroke (28) in the closing direction against the force of a control-valve spring (34) and which can contact a contact surface (29) of a valve cap (30) surrounding the closing body (27) when carrying out a stroke in the opening direction. In a region of the axial bore hole (23) for the closing body (27) there is a narrow guidance surface (32) with gaps, which enable a volume flow of hydraulic medium between the high-pressure chamber (24) and the low-pressure chamber (22).
Public/Granted literature
- US20060201466A1 Hydraulic valve play compensation element Public/Granted day:2006-09-14
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