Powertrain selecting and matching for better fuel economy and better performance is a very important topic for design of heavy duty trucks.

为了得到更好的燃料经济性和整车性能，对动力系统进行选择和匹配是重型汽车整车设计中的重要课题。

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It mainly mainly produces automotive clutch pressure plate and driven disc assembly. It is fixed-point matching manufacturer of Shaanxi Heavy Duty Automobile and King Long Coach.

公司主要生产汽车用离合器压盘及从动盘总成，是陕西重型汽车、金龙客车定点配套厂家。

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So a method for matching parameter of HEV based on the vehicle duty cycle is proposed. In this paper, the works carried out as follows.

行驶工况对汽车性能的影响很大，因此，研究基于行驶工况法对混合动力汽车的参数匹配的影响具有很好的理论和实践意义。

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