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Multiple variable valve lift apparatus

A valve lift, variable technology, applied in valve devices, valve drive devices, non-mechanically actuated valves, etc., can solve problems such as cam displacement reliability degradation, damage to variable valve lift devices, etc.

Active Publication Date: 2017-07-21
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the valve opening / closing unit or variable valve lift device may be damaged, or the reliability of cam displacement may be deteriorated

Method used

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  • Multiple variable valve lift apparatus
  • Multiple variable valve lift apparatus
  • Multiple variable valve lift apparatus

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Embodiment Construction

[0049] The following description is merely exemplary in nature and is not intended to limit the disclosure, application, or uses. It should be understood that throughout the drawings, corresponding reference numerals indicate like or corresponding parts and features.

[0050] figure 1 is a perspective view of a multi-variable valve lift device according to an exemplary embodiment of the present disclosure.

[0051] as in figure 1 As shown in , the multi-variable valve lift device includes: a camshaft 10; a first moving cam 20, including a plurality of differently shaped cams 21, 22 and 23, with a first cam guide protrusion 25, together with the camshaft 10 Rotate, and can slide in the axial direction of the camshaft 10; the second mobile cam 30, including a plurality of cams 31, 32 and 33 of different shapes, has a second cam guide protrusion 35, rotates together with the camshaft 10, And can slide in the axial direction of the camshaft 10; the first operating unit 60 selec...

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Abstract

A multiple variable valve lift apparatus may include a moving cam formed in a hollow cylindrical shape into which a camshaft is inserted. In particular, the moving cam rotates together with the camshaft, moves in an axial direction of the camshaft, and includes a cam guide protrusion and a plurality of cams realizing different valve lift with each other. Moreover, the apparatus includes: an operating unit selectively guiding the cam guide protrusion; a controller controlling the operating unit; a valve opening / closing unit contacting with any one cam of the cams; and at least two pins disposed at the operating unit so as to guide the cam guide protrusion. The cam guide protrusion includes an inserted portion being selectively inserted between the pins and a shift portion.

Description

[0001] Citations to related applications [0002] This application claims priority and benefit from Korean Patent Application No. 10-2015-0169033 filed on Nov. 30, 2015, which is hereby incorporated by reference in its entirety. technical field [0003] The present disclosure relates to a multiple variable valve lift apparatus. More particularly, the present disclosure relates to a multi-variable valve lift device that realizes multiple valve lifts with a simple structure. Background technique [0004] The statements in this section merely provide background information related to the present disclosure and may not constitute prior art. [0005] Generally, an internal combustion engine receives fuel and air into a combustion chamber and burns the fuel and air to generate power. The intake valve is operated by the drive of the camshaft, and when the intake valve is opened, air flows into the combustion chamber. In addition, the exhaust valve is operated by the drive of the...

Claims

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Application Information

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IPC IPC(8): F01L13/00F01L1/04F01L9/04
CPCF01L1/04F01L13/0036F01L9/20F01L1/053F01L1/08F01L1/185F01L1/2405F01L13/0005F01L2001/0473F01L2013/0052F01L2013/101F01L2201/00F01L2305/00F01L1/0532
Inventor 催炳永
Owner HYUNDAI MOTOR CO LTD
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