混合动力汽车发动机起停控制策略

Control strategy for engine start-stop in hybrid electric vehicle

应用PSAT前向仿真软件,对自主开发的双离合器并联混合动力车建立了整车仿真模型。并利用该模型对其发动机起停控制策略进行了仿真优化研究。结果表明:对于该混合动力车型,当发动机起动控制功率为10 kW/1200 r.min-1、停止控制功率为4 kW/800 r.min-1时,整车经济性能最佳,且在该起停功率下发动机、电机工作协调,动力总成工作模式切换平顺;将优化仿真结果应用到实车,验证了该控制策略的实用性。

A simulation model was built for the self-developed parallel hybrid electric vehicle(HEV) with dual clutch configuration using the software of powertrain system analysis toolkit(PSAT) with the forward-looking simulation approach.The model was used to perform the optimization simulation of the control strategy for the engine start-stop in HEV.The results showed that the optimal fuel economy can be realized when the engine start power is 10 kW/1200 r·min-1 and the engine stop power is 4 kW/800 r·min-1.Under t...