Journal of South China University of Technology (Natural Science Edition) ›› 2009, Vol. 37 ›› Issue (7): 79-84.

• Automotive Engineering • Previous Articles     Next Articles

Dynamic Analysis of a New Hypocycloid Energy Transformation Mechanism

Xue Yun-feng  Du Qun-gui  Zhu Jun-peng   

  1. School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2008-09-22 Revised:2009-01-09 Online:2009-07-25 Published:2009-07-25
  • Contact: 薛运锋（1982-），男，博士生，主要从事CAD／CAE、现代机电工程设计方法研究． E-mail:xue．yunfeng@mail．seut．edu．cn
  • About author:薛运锋（1982-），男，博士生，主要从事CAD／CAE、现代机电工程设计方法研究．
  • Supported by:

    国家自然科学基金资助项目（50475096）;广东省自然科学基金资助项目（04020084）;广东省自然科学基金重点项目（05103545）;广东省科技攻关项目（2004A11303003）

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Abstract:

The working principle and structural design of a new hypocycloid energy transformation mechanism is in- troduced, and the dynamic model of the mechanism is established using the Euler-Lagrange approach based on energy. Afterwards, a numerical simulation based on four-order Runge-Kutta＇s method is performed with Matlab. The results show that the simple-harmonic rectilinear motion of piston in the new mechanism makes the engine work more stably, that the peak acceleration in the new mechanism is 25 % less than that in the conventional slider-crank mechanism, and that the output rotational speed of the new mechanism is much higher at the same mean equivalent cylinder pressure and load torque, thus improving the output power of the engine.

Key words: hypocycloid, energy transformation mechanism, dynamic model, simple-harmonic rectilinear motion