JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2011, Vol. 41 ›› Issue (2): 154-157.

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Analysis of  flat crankshaft engines vibration sources and design of the balance system

LV Yidan1, LIU Yungang2, ZHANG Zhensheng3   

  1. 1. Automobile And Electronic Technology School, Shandong Institute of Commerce and Technology, Jinan 250103, China;
    2. School of Energy ＆ Power Engineering,Shandong University, Jinan 250061, China;
    3. Jinan Diesel Engine Company Limited, Jinan 250306, China
  • Received:2010-07-26 Online:2011-04-16 Published:2010-07-26

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Abstract:

The most critical problem for an 8 cylinder Vtype engine is the unbalanced second order reciprocating inertia force. Engines seriously  vibrate then even a doubleshaft balance system is adopted. The features and the values of the overturning moment of 8 cylinder Vtype engine were studied, the balance method as well as the balance condition was discussed and a new balance system was designed. The experimental results conducted on an 8V190 diesel engine indicated that the new balance system can effectively  reduce engine vibration and make the 8 cylinder Vtype engine operate stably.

Key words: engines, vibration, overturning moment, balance technique

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