| 摘要 |
The invention relates to a method of diagnosis of a drift of at least one injector of an injection system with common ramp, which comprises a pressure regulating control unit and a richness regulating control unit, the pressure and richness regulating control units being driven by an electronic computer according to values of pressure setpoint and of richness setpoint which are recorded in the computer, the method of diagnosis comprising a step of checking for the existence of a drift of the pressure regulating control and a step of checking for the existence of a drift of the richness regulating control when the two units operate in closed loop, the drift of the injector being established upon the joint detection of a drift of the pressure regulating control unit and of a drift of the richness regulating control unit. |
