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Variable valve lift device

A valve lift, variable technology, used in valve devices, non-mechanically actuated valves, engine components, etc., to solve problems such as increased drive mass, deterioration of structural rigidity, and disadvantages

Inactive Publication Date: 2012-08-08
HYUNDAI MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the driving mass increases and its structural stiffness deteriorates
This is not good for it in high speed drive

Method used

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  • Variable valve lift device
  • Variable valve lift device
  • Variable valve lift device

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Embodiment Construction

[0026] Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0027] In the following description, exemplary embodiments of the present invention are applicable to a swing arm system. However, it will be apparent to a person skilled in the art that the invention is also readily applicable to rocker arm systems. Therefore, it should be understood that the present invention is not limited to swivel arm systems.

[0028] figure 1 is a front sectional view of a variable valve lift device according to an exemplary embodiment of the present invention and figure 2 for along figure 1 A cross-sectional view cut along the line II-II.

[0029] Such as figure 1 As shown, the valve 1 and the valve spring 3 are connected to the swing arm 5 . A driving piston groove 15 is formed on the lower end of the swing arm 5 opposite to the valve 1 and the valve spring 3 .

[0030] The driving piston 11 is arranged ...

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PUM

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Abstract

The invention relates to a variable valve lifting device, comprising arms for controlling the inlet valve and outlet valve and spring connecting with the said arm, a drive piston groove formed on the said arm relative to the said valve and valve spring, a drive piston inside the drive piston groove, a drive piston elastic parts in the drive piston groove and for biasing voltage to the said drive piston groove, a bearing connected with the cylinder cover to support the drive piston, a locking unit for selectively fixing the drive piston and a fluid pressure supplying unit for selectively supplying the fluid pressure to the said locking unit.

Description

[0001] Horizontal references to related applications [0002] This application claims priority from Korean Patent Application No. 10-2006-0087581 filed with the Korean Intellectual Property Office on September 11, 2006, which is hereby incorporated by reference. technical field [0003] The present invention relates to a variable valve lift device. More particularly, the present invention relates to a variable valve lift device capable of adjusting a valve lift amount according to an engine operating state. Background technique [0004] Generally, a vehicle engine includes a combustion chamber within which fuel is combusted to generate power. The combustion chamber is provided with an intake valve supplying a gas mixture containing fuel and an exhaust valve exhausting combustion gases. These intake and exhaust valves open and close the combustion chambers by a valve lift device attached to the crankshaft. [0005] A conventional valve lift device has a fixed valve lift am...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L9/02F01L9/10F01L9/40
CPCF01L1/185F01L13/0021F01L13/0015F01L13/0031F01L13/0005F01L1/2405Y10T74/2107F01L13/00F01L1/18
Inventor 金炯翼
Owner HYUNDAI MOTOR CO LTD