Vehicle tests showed that the controller can run the powertrain of the hybrid electric vehicle fairly well and improve the performance and fuel economy of the vehicle.

通过整车试验，证明其能够较好地实现对混合动力汽车多能源动力总成的控制，提高了整车动力性和经济性。

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The powertrain control system of a hybrid electric vehicle (HEV) is developed, which can achieve energy management and state switching control.

开发了一种并联式HEV的动力总成控制系统，可实现HEV能量管理和状态切换控制。

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From the results of simulation, the control strategy and simulation models can meet the need of the design target for the hybrid electric city bus powertrain.

仿真结果表明，本文所提出的控制策略和仿真模型能满足该混合动力城市客车驱动系统的设计要求。

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But with so much competition from abroad, and with so many competing future powertrain technologies out there--electric hybrids, clean diesels and hydrogen fuel cells--companies can't afford to go it alone, says David Cole, chairman of the Center for Automotive Research in Ann Arbor, Mich.

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