The invention relates to a commercial vehicle range extender control method and system, and relates to the technical field of the commercial vehicle manufacturing industry, and the method comprises the steps: presetting a plurality of engine working points of a vehicle, and presetting a first threshold value of the electric quantity of a whole vehicle battery; obtaining the remaining capacity of the whole vehicle battery electric quantity and the whole vehicle demand power; when the remaining amount of the electric quantity of the battery of the whole vehicle is smaller than the first threshold value, a range extender is started, the required power of the whole vehicle is compared with the average value of the power of the working points of the two adjacent engines, if the required power of the whole vehicle is smaller than the average value, the lower working point is selected as the working point of the range extender, and otherwise, the higher working point is selected as the working point of the range extender; and controlling the range extender to output power at the selected working point. According to the range extender, the working point switching frequency of the range extender is reduced, the problem of torque fluctuation in the adjusting process of the range extender is avoided, the range extender works stably as a whole, the NVH of an engine is better, and the fuel economy and the emission performance of the engine are improved.
本申请涉及一种商用车增程器控制方法及系统,涉及商用车汽车制造行业技术领域,方法包括:预设车辆的多个发动机工作点,预设整车电池电量第一阈值;获取整车电池电量的剩余量和整车需求功率;当所述整车电池电量的剩余量小于所述第一阈值时,增程器启动,将整车需求功率和其相邻两个发动机工作点的功率的平均值比较,若小于所述平均值,选择较低的工作点作为增程器工作点,否则选择较高的作为增程器工作点;控制增程器在所选择工作点输出功率。本申请减少了增程器的工作点切换频率,避免了增程器调节过程中的转矩波动问题,使得增程器整体工作稳定,发动机的NVH更好,并且提高了发动机的燃油经济性和排放性能。
Commercial vehicle range extender control method and system
一种商用车增程器控制方法及系统
2023-09-29
Patent
Electronic Resource
Chinese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen |
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