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串联式静液传动混合动力车辆功率管理策略

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Keywords: 汽车工程,节能减排,随机动态规划,功率管理策略,静液传动混合动力车辆

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Abstract:

针对串联式静液传动混合动力车辆中,发动机工作状况独立于车轮负载情况,储能元件功率密度大、能量密度低的特点,提出了基于随机动态规划方法的发动机功率管理策略,对发动机工作点进行优化控制。根据传统车辆性能参数配置了串联式静液传动混合动力车辆,以降低燃油消耗为优化目标,对原发动机和减小装机功率的发动机工作情况进行仿真。结果表明,采用该控制策略进行优化控制,发动机燃油经济性大幅提高,氮氧化物和烟尘排放明显减少,并且在城市工况下,较小装机功率的发动机在氮氧化物排放性能上优于原发动机。

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