The invention belongs to the field of new energy automobiles, and particularly relates to a shutdown control method of a range extender, electronic equipment and a range-extended automobile, the rotation angle of a crankshaft is divided into a low resistance interval, a uniform resistance interval and a high resistance interval according to the piston resistance change of a compression stroke; the method comprises the steps that the generator is in a rotating speed mode and maintains a constant rotating speed, and engine fuel cut-off is requested; when the crankshaft is located in the low-resistance interval, the power generator is switched into a torque mode and maintains constant torque, and the engine enters a shutdown process under frictional resistance; when the rotating speed of the engine is lower than the rotating speed threshold value, the generator applies different negative torques based on resistance changes of an engine piston, and the engine is pressed and stopped. Compared with the prior art, the problem that in the prior art, abnormal sounds are generated when the range extender stops is solved, the increase of the pressure stop torque of the generator is controlled through the interval where the crankshaft is located, the total stop torque is increased more smoothly, and then the probability of the abnormal sounds in the stop process is reduced.
本发明属于新能源汽车领域,具体涉及一种增程器的停机控制方法、电子设备以及增程式汽车,根据压缩冲程的活塞阻力变化,将曲轴的旋转转角划分为低阻力区间、均匀阻力区间和高阻力区间;方法包括:发电机为转速模式并维持恒定转速,请求发动机断油;当曲轴位于低阻力区间时,发电机切换为扭矩模式并维持恒定扭矩,发动机在摩擦阻力下进入停机过程;当发动机转速低于转速阈值后,发电机基于发动机活塞的阻力变化,施加不同的负扭矩,压停发动机。与现有技术相比,本发明解决现有技术中增程器停机产生异响的问题,本方案通过曲轴所处的区间控制发电机压停扭矩的增加,实现总的停机扭矩增加得更为平顺,进而减少停机过程中出现的异响的概率。
Shutdown control method of range extender, electronic equipment and range-extended automobile
增程器的停机控制方法、电子设备以及增程式汽车
06.05.2025
Patent
Elektronische Ressource
Chinesisch
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 / F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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