本文还对该系统建立了相应的控制策略，根据具体情况选择最合适的工作模式，并优化与发动机相关工作模式的性能，提高整车运行的燃油效率，减少尾气排放。

The vehicle control strategy is established to choose the most appropriate operation mode and optimize the overall vehicle operation involving the engine in terms of fuel economy and emission levels.

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