Invention Grant
- Patent Title: Hydraulic valve for an internal combustion engine
- Patent Title (中): 内燃机液压阀
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Application No.: US14312858Application Date: 2014-06-24
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Publication No.: US09422840B2Publication Date: 2016-08-23
- Inventor: Kenneth J. Parker , John Snyder , Brian Sapp , Udo Diederichs , Melissa Mei Koenig
- Applicant: HILITE GERMANY GMBH
- Applicant Address: DE
- Assignee: HILITE GERMANY GMBH
- Current Assignee: HILITE GERMANY GMBH
- Current Assignee Address: DE
- Agency: Clark Hill PLC
- Agent James R. Foley
- Main IPC: F01L1/34
- IPC: F01L1/34 ; F01L9/02 ; F01L1/04 ; F01L1/344 ; F16K11/07 ; F16K15/14 ; F16K15/18

Abstract:
In a hydraulic valve comprising a spool, one or more band-shape check valves and an enclosing bolt or snout, the check valve may be compressed to the point of excessive wear or failure and may impede spool movement. The problem outlined is solved by an inventive hydraulic valve for use with a cam phasing apparatus of an internal combustion engine. The hydraulic valve comprises a hollow bolt or snout, check valves, and a spool disposed inside the bolt while still being able to shift axially within the bolt. The bolt and spool are configured to provide fluid passageways between the spool and the cam phasing apparatus depending on a translational displacement of the spool. Furthermore, the spool is configured to allow an oil flow through the fluid passageway, yet limit a compression of the band-type check valves.
Public/Granted literature
- US20150369092A1 HYDRAULIC VALVE FOR AN INTERNAL COMBUSTION ENGINE Public/Granted day:2015-12-24
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