Verfahren zur Diagnose eines Ventils in einem Kraftstoffversorgungssystem einer Brennkraftmaschine

摘要

The invention relates to a method for diagnosing a valve in a fuel supply system of an internal combustion engine. A first pump pumps fuel out of a fuel reservoir into a first fuel line in a first pressure area. The fuel is pumped from said first pressure area into a pressure accumulator in the second pressure area by a second pump. The fuel pressure in the pressure accumulator is determined by means of a pressure sensor. The pressure in the second pressure area is regulated and/or controlled with a pressure regulation and/or pressure control means, the fuel flowing out of the second pressure area and into a second fuel line via said pressure regulation and/or pressure control means. The valve is used to increase pressure in the first pressure area.