文章针对油电并联混合动力汽车发动机启动过程中存在的油耗与驾驶平顺性问题，对传统起动机启动与电机带动启动两种方式的性能进行对比分析，并进行实车试验。在发动机水温 70℃左右的相同工况下，采集不同启动方式的瞬时喷油量、车身抖动数据，以便量化评估节油效果与驾驶体验。结果表明：电机带动启动时，控制转速为 700r/min可实现瞬时油耗最低（3.05L/h），且车身无明显抖动，为最优启动控制策略。

This article focuses on the problems of fuel consumption and driving smoothness existing in the engine starting process of oil-electric parallel hybrid vehicles. It conducts a comparative analysis of the performance of traditional starter starting and motor-driven starting，and conducts real vehicle tests. Under the same working conditions with engine water temperature around 70℃，collect the instantaneous fuel injection volume and vehicle body shaking data of different starting methods to quantitatively evaluate the fuel-saving effect and driving experience. The results show that when the motor drives the start-up，controlling the rotational speed at 700r/min can achieve the lowest instantaneous fuel consumption（3.05L/h），and there is no obvious shaking of the vehicle body. It is the optimal start-up control strategy.