Eccentric shaft control system of complete-variable air valve lift mechanism

A valve lift and control system technology, applied in mechanical equipment, engine components, machines/engines, etc., can solve the problems of complex structure and low reliability of the eccentric shaft control mechanism, and achieve weight reduction, complexity reduction, and Moment of inertia, material saving effect

Active Publication Date: 2011-08-03
CHERY AUTOMOBILE CO LTD
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Problems solved by technology

[0004] The present invention designs an eccentric shaft control system of a fully variable valve lift mechanism. The technical problem it solves is that the existing eccentric shaft control mechanism has a relatively complicated structure, low reliability and cannot minimize the eccentric shaft. Realize the adjustment of the valve lift from zero to the maximum value within the rotation range

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  • Eccentric shaft control system of complete-variable air valve lift mechanism
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  • Eccentric shaft control system of complete-variable air valve lift mechanism

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Embodiment Construction

[0032] Combine below Figure 1 to Figure 8 , the present invention is further described:

[0033] Such as figure 1 and Figure 6 As shown, an eccentric shaft control system of a fully variable valve lift mechanism, the engine cylinder head 7 is equipped with a bearing seat 5, the bearing seat 5 is equipped with an eccentric shaft 4, the eccentric shaft 4 is provided with an eccentric wheel 43, and also includes a Bearing cap assembly 3, the bearing cap assembly 3 is used to limit the eccentric shaft 4 on the bearing seat 5, the bolt 6 is used for fastening; the worm 12 is installed on the rotor of the motor 1, and the worm wheel 14 is fixedly connected to the journal of the eccentric shaft 44, the motor 1 drives the worm 12 and the worm gear 14 to mesh with each other. Under the action of an angle limit device, the eccentric shaft 4 only needs to rotate from 0 to 180 degrees to realize the adjustment of the valve lift from zero to the maximum value. between adjustments.

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Abstract

The invention relates to an eccentric shaft control system of a complete-variable air valve lift mechanism. An engine cylinder cover (7) is provided with a bearing seat (5); the bearing seat (5) is provided with an eccentric shaft (4); the eccentric shaft (4) is provided with an eccentric wheel (43); a worm (12) is installed on a rotor of a motor (1); a worm wheel (14) is fixedly connected to an eccentric shaft neck (44); and during the meshing process of the worm (12) and the worm wheel (14) driven by the motor (1), through the effect of an angle limiting device, the adjustment of an adjustment air valve from zero to the maximum value can be realized through the rotation changes of the eccentric shaft (4) from zero to 180 degrees. According to the invention, because the rotation changes of the eccentric shaft from zero to 180 degrees are controlled by the angle limiting device, the adjustment of the adjustment air valve from zero to the maximum value can be realized, and the accurate regulation and control, and prevention of system failure are ensured, so that the reliability of the engine is strengthened.

Description

technical field [0001] The invention relates to an eccentric shaft control system of a fully variable valve lift mechanism in an automobile internal combustion engine. Background technique [0002] The development of variable valve trains puts forward higher requirements for the control of the system. On the one hand, the variable valve system needs to be able to meet the variable requirements of valve lift, duration, and timing; on the other hand, it must ensure the control Accurate, avoiding system failure, thereby enhancing the reliability of engine work; in addition, it is necessary to reduce the weight and complexity of the system as much as possible. [0003] The structure of the eccentric shaft control mechanism in the Chinese patent application "a valve lift control mechanism capable of realizing stepless adjustment" (CN200910116666.2) is relatively complicated and the reliability is not high. Contents of the invention [0004] The present invention designs an ecc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/34F01L1/04
CPCF01L2013/0068F01L13/0026F01L1/34F01L1/04F01L1/46
Inventor 刘和义
Owner CHERY AUTOMOBILE CO LTD
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