The invention discloses an extended-range hybrid gas vehicle starting control method. The method comprises the following steps that when an engine needs to be started and charged, a motor firstly drags the engine to a certain rotating speed and then releases the engine, and meanwhile, when the engine reaches an ignition rotating speed in the process of being dragged by the motor, jet ignition combustion is controlled to be started successfully; after the engine is successfully started, idling operation is carried out for a period of time, and after the idling operation of the engine is finished, a vehicle control unit sends instructions to the motor and the engine, specifically, the vehicle control unit sends a rotating speed target instruction to the motor, and the motor drags the engineto transit from idling to the target rotating speed at a certain slope; and after the engine reaches the target rotating speed, the vehicle control unit sends a load instruction to an engine controller, the load instruction is transited from an initial load to the target load at a certain slope, then the engine responds to the target load at the same slope, and starting is completed. The method has advantages that NOx emission in a starting process is reduced, emission durability of the whole vehicle is improved, higher emission regulation requirements are met and so on.
本发明公开一种增程式混合动力燃气车启动控制方法,包括:当需要发动机启动充电时,电机先拖动发动机至一定转速后放开,同时,发动机在被电机拖动的过程中达到点火转速时控制喷气点火燃烧启动成功;发动机启动成功后进入怠速运行一段时间,发动机怠速运行结束后,整车控制器向电机和发动机发送指令:包括,整车控制器发送转速目标指令给电机,电机拖转发动机以一定的斜率从怠速过渡至目标转速;发动机达到目标转速后,整车控制器发送负荷指令给发动机控制器,负荷指令以一定的斜率从初始负荷过渡至目标负荷,然后发动机以相同的斜率响应目标负荷,完成启动。本发明具有降低启动过程NOx排放、提高整车排放耐久性能,满足更高排放法规要求等优点。
Extended-range hybrid gas vehicle starting control method
一种增程式混合动力燃气车启动控制方法
2020-10-13
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 |
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