四连杆连续可变气门驱动机构的结构设计和试验分析

屈小贞

doi:10.3969/j.issn.1001-2222.2021.01.008

车用发动机 >

2021 , Vol. 0 >Issue 1: 45

DOI: https://doi.org/10.3969/j.issn.1001-2222.2021.01.008

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四连杆连续可变气门驱动机构的结构设计和试验分析

屈小贞

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（辽宁工业大学汽车与交通工程学院，辽宁锦州 121001）

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Structural Design and Experimental Analysis of Four Connecting Rod Continuous Variable Valve Actuation Mechanism

QU Xiaozhen

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(School of Automobile & Transportation Engineering,Liaoning University of Technology,Jinzhou 121001,China)

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摘要

提出了一种机械式四连杆连续可变气门驱动机构，并完成了结构布置设计和第二凸轮型线设计。针对该连续可变气门驱动（CVVA）机构样机进行了试制安装，并在试验台上成功地运转到7 200 r/min，通过对不同控制轴转角下的气门升程和加速度进行测量分析，结果表明该CVVA机构能达到预期的设计目标。

关键词： 四连杆; 连续可变气门驱动（CVVA）; 气门升程; 结构设计; 台架试验

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屈小贞 . 四连杆连续可变气门驱动机构的结构设计和试验分析[J]. 车用发动机, 2021 , 0(1) : 45 . DOI: 10.3969/j.issn.1001-2222.2021.01.008

Abstract

A mechanically continuous variable valve actuation mechanism with four connecting rod was proposed, and the structural layout and the second cam profile were designed. The trial-manufacture of prototype CVVA mechanism was conducted and the mechanism operated up to 7 200 r/min successfully on a test bench after the installation. The valve lift and acceleration were measured and analyzed based on the various angles of control shaft. The results show that the CVVA mechanism can achieve the anticipated design goals.

Key words： four connecting rod; continuous variable valve actuation(CVVA); valve lift; structural design; bench test

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