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Variable valve actuator

A technology of actuators and actuator pistons, applied to non-mechanically actuated valves, engine components, machines/engines, etc., to solve problems such as poor engine performance and delayed system response

Inactive Publication Date: 2012-03-21
HYUNDAI MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Due to the relatively large closed loop formed by the pressure, the response of the system may be delayed and thus the performance of the engine may be deteriorated

Method used

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  • Variable valve actuator
  • Variable valve actuator
  • Variable valve actuator

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Embodiment Construction

[0034] Reference will now be made in detail to various embodiments of the present invention, examples of which are illustrated in the accompanying drawings and described below. While the invention will be described in conjunction with exemplary embodiments, it will be appreciated that present description is not intended to limit the invention to those exemplary embodiments. On the contrary, the invention is intended to cover not only the exemplary embodiments but also various alternatives, modifications, equivalents and others, which may be included within the spirit and scope of the invention as defined by the appended claims. implementation plan.

[0035] Exemplary embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] figure 1 is a perspective view of a variable valve actuator according to an exemplary embodiment of the present invention,

[0037] figure 2 is an exploded perspective view of a variable...

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Abstract

A variable valve actuator may include a rocker arm which may be pivotally connected to a rocker shaft, and of which a rocker arm hydraulic pressure supply line and a rocker arm hydraulic pressure exhaust line may be formed therein, a variable control piston which may be fluid-connected to the rocker arm hydraulic pressure supply line and slidably interferes the rocker arm hydraulic pressure exhaust line to selectively close the rocker arm hydraulic pressure exhaust line according to supplying hydraulic pressure of the rocker arm hydraulic pressure supply line, an actuating portion which may be selectively fluid-connected to the rocker arm hydraulic pressure supply line and the rocker arm hydraulic pressure exhaust line by the variable control piston such that the actuating portion selectively protrudes according to the supplying hydraulic pressure of the rocker arm hydraulic pressure supply line, and a valve unit opened according to reciprocation of the actuating portion.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2010-0085148 filed with the Korean Intellectual Property Office on Aug. 31, 2010, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to a variable valve actuator. More specifically, the present application relates to a variable valve actuator having a variable control portion and an actuating portion that selectively provides hydraulic pressure to vary valve lift according to engine load, the variable control portion and actuating portion being connected to a rocker arm integrally formed. Background technique [0004] Internal combustion engines generate power by burning fuel in a combustion chamber in a medium of air drawn into the chamber. The intake valve is operated by a camshaft to draw in air, which is drawn into the combustion chamber when the intake val...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/34F01L9/02F01L9/10F01L9/14F01L9/40
CPCF01L9/025F01L13/0031F01L13/0015F01L9/14
Inventor 金载熙李康赫
Owner HYUNDAI MOTOR CO LTD