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

QU Xiaozhen

doi:10.3969/j.issn.1001-2222.2021.01.008

Vehicle Engine ›› 2021, Vol. 0 ›› Issue (1) : 45. DOI: 10.3969/j.issn.1001-2222.2021.01.008

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

QU Xiaozhen

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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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QU Xiaozhen. Structural Design and Experimental Analysis of Four Connecting Rod Continuous Variable Valve Actuation Mechanism[J]. Vehicle Engine. 2021, 0(1): 45 https://doi.org/10.3969/j.issn.1001-2222.2021.01.008