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Engines including valve lift mechanisms with oil flow control features

A technology of engines and valves, applied in the direction of machine/engine, engine components, engine lubrication, etc., can solve problems such as oil leakage

Active Publication Date: 2016-08-24
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the configuration of the oil flow path to and within the valve lift mechanism, oil can leak from the hydraulic lash adjuster during operation

Method used

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  • Engines including valve lift mechanisms with oil flow control features
  • Engines including valve lift mechanisms with oil flow control features
  • Engines including valve lift mechanisms with oil flow control features

Examples

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Embodiment Construction

[0047] Examples of the invention will now be described more fully with reference to the accompanying drawings. The following description is merely exemplary in nature and is not intended to limit the invention, application or use.

[0048] Example embodiments are provided so that this disclosure is thorough, and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth, such as examples of specific components, apparatus and methods, to provide a thorough understanding of embodiments of the invention. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms and that neither should be construed to limit the scope of the invention. In some example embodiments, known processes, known device structures, and known technologies are not described in detail.

[0049] When an element or layer is referred to as being "on," "bonded to," "conn...

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PUM

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Abstract

A valve lift mechanism may include a housing member and a plunger. The housing member may define a first annular wall including a first oil passage. The inner circumference of the first annular wall may define a first continuous region along an axial extent corresponding to the first oil passage from a first oil passage positioned on the inner circumference and circumferentially offset from the first oil passage. A position to a second position on the inner circumference. The plunger may define a second annular wall including a series of holes axially aligned with the first oil passage and separated from each other by an outer circumferential region of the second annular wall. The outer circumferential region may abut the first continuous region of the first annular wall to prevent oil from flowing past the outer circumferential region.

Description

technical field [0001] The present invention relates to an internal combustion engine including a valve lift mechanism. Background technique [0002] The statements in this section provide background information related to the present disclosure which is not necessarily prior art. [0003] Engine components may include a valve lift mechanism that engages a camshaft to provide opening of intake and exhaust valves during engine operation. The valve lift mechanism may include hydraulic lash adjusters to maintain engagement with valve train components such as pushrods during operation. However, due to the configuration of the oil flow path to and within the valve lift mechanism, oil may leak from the hydraulic lash adjuster during operation. Contents of the invention [0004] Engine components may include engine structures, camshafts, and valve lift mechanisms. The engine structure may define cylinder bores and a lifter housing. The camshaft is rotatably supported by the e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L9/02F01L9/10
CPCF01L1/146F01L13/0005F01L2001/2427F01M9/104
Inventor N.J.亨里克斯马
Owner GM GLOBAL TECH OPERATIONS LLC