| 摘要 |
The invention relates to a method for detection of errors relating to the fitting of a fuel filter in a fuel system (4) for a combustion engine (2), which fuel system (4) comprises a first fuel tank (20), a second fuel tank (22), a first fuel conduit (26) arranged in connection with the first fuel tank (20) and the second fuel tank (22), a first fuel pump (24), arranged to feed fuel from the second fuel tank (22) to the first fuel tank (20) through the first fuel conduit (26), a second fuel pump (28), arranged to feed fuel from the first fuel tank (20) to a high pressure circuit (18) in the fuel system (4), and a first fuel filter (30) arranged downstream of the first fuel pump (24) and upstream of the second fuel pump (28). The method comprises the steps to: a) define a tolerance interval for pressure drops over the first fuel filter (30); b) control the first fuel pump (24) to feed fuel from the second fuel tank (22) to the first fuel tank (20) through the first fuel filter (30); c) calculate a pressure drop over the first fuel filter (30); and d) determine if an error has arisen when the first fuel filter (30) was fitted, by verifying whether the calculated pressure drop is within the defined tolerance interval. The invention also relates to a fuel system (4), a combustion engine (2) comprising said fuel system (4) and a vehicle (1) comprising said fuel system (4). |
