Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (10): 1432-1436.DOI: 10.12068/j.issn.1005-3026.2016.10.014

• Mechanical Engineering • Previous Articles     Next Articles

Disjoint Probability of Transmission Chain in Engine Valve Train

YANG Zhou, YANG Hui-da, ZHANG Yi-min   

  1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China .
  • Received:2015-07-07 Revised:2015-07-07 Online:2016-10-15 Published:2016-10-14
  • Contact: YANG Zhou
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Abstract: Based on the research of certain transmission chain in gas engine valve train, a probabilistic reliability mathematical model of the disconnection of valve train was established with the method of the stochastic perturbation and probabilistic reliability. A transmission chain disjointed reliability analysis method was proposed when the valve mechanism random variables belong to normal distribution. The disjoint probabilities in different sensorimotor stage and different speed were obtained by numerical examples. The disjoint probability increases with the increase of speed, which is consistent with actual situation, and shows the correctness of the as-proposed method. A solution was proposed to reduce the disjoint probability by analyzing the reasons for disconnection, which provide a theoretical basis to improve the follow-up reliability design about engine valve transmission chain.

Key words: valve train, transmission chain disjointed, random variables, stochastic perturbation, probabilistic reliability

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