The invention provides a hybrid drive control method for a clutch-free double-planet-row hybrid power vehicle. When the vehicle is in an ECVT hybrid power driving mode, if an absolute value of an accelerator pedal opening change rate is smaller than a set value A and a vehicle speed is greater than a set value B, table look-up is performed to obtain an engine target rotation speed; an actual rotating speed of the engine is close to the target rotating speed of the engine by controlling a small motor torque and a large motor torque; when an actual rotating speed absolute value of the small motor is smaller than a set value C, a second brake is controlled to be locked, a target torque of the small motor is zero, meanwhile, the target torque of the engine is obtained through table look-up, and the target torque of the large motor is obtained through calculation according to a formula (1); and in a torque execution process, when the absolute value of the accelerator pedal opening change rate is not smaller than the set value A or the vehicle speed is not larger than the set value B, the second brake is controlled to be opened, and the vehicle enters the ECVT hybrid power driving mode again. The method is simple and feasible, and the fuel economy of the whole vehicle can be improved.
本发明提供了一种无离合器双行星排混合动力车辆混动驱动控制方法,在车辆处于ECVT混合动力驱动模式下,若加速踏板开度变化率绝对值小于设定值A且车速大于设定值B,则先查表得到发动机目标转速,再通过控制小电机扭矩和大电机扭矩使得发动机实际转速靠近发动机目标转速,当小电机实际转速绝对值小于设定值C时,控制第二制动器锁止,使得小电机目标扭矩为0,同时查表得到发动机目标扭矩,按公式(1)计算得到大电机目标扭矩,在该扭矩执行过程中,当加速踏板开度变化率绝对值不小于设定值A或车速不大于设定值B时,控制第二制动器打开,车辆重新进入ECVT混合动力驱动模式。本发明方法简单可行,可提高整车燃油经济性。
Hybrid drive control method for clutch-free double-planet-row hybrid power vehicle
无离合器双行星排混合动力车辆混动驱动控制方法
2020-10-27
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 |