Extended-range hybrid gas vehicle starting control method

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 i