The invention discloses a hybrid electric vehicle engine starting control method and system and a vehicle The hybrid electric vehicle engine starting control method comprises the steps that when an engine starting requirement is recognized during advancing and the rotating speed of a second motor is larger than a first rotating speed threshold value, a first motor is controlled to enter torque control, an engine is dragged to the position close to the oil injection ignition rotating speed, and in the engine dragging process, the first motor is controlled to enter torque control; the first clutch is controlled to begin to be pre-charged to a semi-combination point; when the rotating speed of the engine is close to the oil injection ignition rotating speed, an oil injection ignition instruction is sent; after ignition succeeds, idling speed control is started, and the first motor dragging torque is gradually quitted; after the engine controller feeds back an engine starting success flag bit, the engine is controlled to enter fast rotating speed synchronous control; and when the absolute value of the difference between the engine rotating speed and the second motor rotating speed is smaller than the third rotating speed threshold value, the first clutch is controlled to be gradually closed till locking, and the engine enters torque control in the gradual closing process of the first clutch. According to the invention, the torque capability of the P2 motor for pure electric driving of the automobile is improved.
本发明公开了一种混合动力汽车发动机起动控制方法、系统及车辆,包括:当行进间识别出发动机起动需求,第二电机的转速大于第一转速阈值时,控制第一电机进入扭矩控,将发动机拖拽至喷油点火转速附近,在拖拽发动机的过程中,控制第一离合器开始预充至半结合点;当发动机转速到达喷油点火转速附近时,发送喷油点火指令;点火成功后进入怠速转速控,第一电机拖拽扭矩逐渐退出;当发动机控制器反馈发动机起动成功标志位后,控制发动机进入快速转速同步控;当发动机转速与第二电机转速差的绝对值小于第三转速阈值时,控制第一离合器逐渐闭合直至锁止,第一离合器逐渐闭合的过程中发动机进入扭矩控。本发明提升了P2电机用于汽车纯电行驶的扭矩能力。
Hybrid electric vehicle engine starting control method and system and vehicle
混合动力汽车发动机起动控制方法、系统及车辆
22.11.2022
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 |
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