Power system control method of plug-in type strong hybrid automobile

Abstract

The invention discloses a power system control method of a plug-in type strong hybrid automobile. The method includes the following control process that in the series connection drive mode of a vehicle, when it is detected that the torque fed back by an engine and the torque fed back by an electric generator are both positive values, it is indicated that the electric generator drags the engine torotate instead of generating electricity, at the moment, the engine is controlled to stop, and more electric quantity can be prevented from being consumed. In conclusion, whether the engine needs to stop or not can be judged in combination with the torque fed back by the electric generator, so that the purposes of reasonable switchover, electric energy conservation and safety traveling are achieved.

Description

technical field [0001] The invention relates to the technical field of vehicle drive control, in particular to a power system control method of a plug-in strong hybrid vehicle. Background technique [0002] With the increasing depletion of non-renewable resources and the increasing environmental pollution caused by automobile emissions, human beings are faced with the dual challenges of oil depletion and environmental pollution. It has become a consensus from all walks of life to promote new energy vehicles with low energy consumption and low emissions as an effective means to reduce pollution, energy consumption and emissions. In the new energy vehicle power system scheme, the hybrid power system combines the advantages of the environmental protection and energy saving of the pure electric system and the long driving range of the traditional power system, and is undoubtedly the best choice at present. [0003] In a strong hybrid system, two mechanical power sources are gen...

AI Technical Summary

Problems solved by technology

[0005] In the power system of a strong hybrid vehicle with a similar configuration in the past, when the remaining fuel is insufficient but the power system still needs engine boost or power generation, the generator will still drive the engine to start, causing the generator to drive the engine to rotate, resulting in greater loss However, due to the large error in the collection of the remaining fuel, it is not appropriate to use the remaining fuel information to judge whether to control the start and stop of the engine, and there are more potential safety hazards

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