| 摘要 |
The invention is directed to a method and an arrangement for operating a fuel supply system (10) and especially a fuel supply system of an internal combustion engine of a motor vehicle. Fuel is pumped into an accumulator (19) with the aid of pumps (13, 24) and the fuel is adjusted at least to a first pressure (P1) or a second pressure (P2). Initially, the first pressure (P1) is adjusted and a pressure signal (PS1) is detected and, thereafter, the second pressure (P2) is adjusted and a pressure signal (PS2) is detected. A pressure difference (DELTAP) is formed from the detected first and second pressure signals (PS1, PS2). If the pressure difference DELTAP deviates from an expected pressure difference (DELTAP_E) by more than a threshold value (S), then a fault in the fuel supply system (10) is detected and stored.
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