A device for the prevention of die-back of the motor in the case of a fuel injection system with a vehicle equipped this flax

摘要

The invention relates to a device for the prevention of die-back of the motor in the case of a with a this flax fuel injection system, in particular a common - rail - injection system, vehicle equipped. The device has a volumetric flow control valve, a fuel - high-pressure pump, a pressure regulating valve, one or more injectors and a control unit. The control unit, in the idling operation of the engine in a first operating mode is a pressure control by means of a control pressure valve upstream of the volume as a rule, is monitored, whether an operating point is present, in which a triggering of air from the fuel takes place, and forwards in the case of a detecting of such a working point a second operating mode, an, in which a pressure regulation by means of a control of the pressure regulating valve is.