Invention Grant
- Patent Title: Hydraulic cam follower
- Patent Title (中): 液压凸轮从动件
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Application No.: US11946147Application Date: 2007-11-28
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Publication No.: US07882815B2Publication Date: 2011-02-08
- Inventor: Florin Bugescu , Richard Best
- Applicant: Florin Bugescu , Richard Best
- Applicant Address: DE Herzogenaurach
- Assignee: Schaeffler Technologies GmbH & Co. KG
- Current Assignee: Schaeffler Technologies GmbH & Co. KG
- Current Assignee Address: DE Herzogenaurach
- Agency: Volpe and Koenig, P.C.
- Main IPC: F01L1/14
- IPC: F01L1/14

Abstract:
A hydraulic cam follower for simultaneous actuation of several equal-acting gas-exchange valves, especially for a tappet pushrod valve train of an engine, includes an outer part, whose base forms a cam contacting surface, and from whose head hollow-cylindrical guides extend in the same number as the valves in a direction towards the base. A housing of a hydraulic play compensation element is provided in each guide and sits with its bottom side on an inside of the bottom of the outer part. A concentric pressure piston is guided in a borehole starting from a head end of each housing so it can move axially. A non-return valve is located at a bottom-side base of the piston and a high-pressure space is formed axially between the base and the bottom side of the housing. A reservoir for hydraulic medium is formed between the base and a head end of the piston.
Public/Granted literature
- US20080141965A1 HYDRAULIC CAM FOLLOWER Public/Granted day:2008-06-19
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