Method for testing fuel injection system of internal-combustion engine, involves detecting pressure in common rail and pressure is adjusted or stored in common rail

摘要

The method involves detecting the pressure in the common rail (16). A pressure is adjusted or stored in the common rail. A transporting fuel is prevented in the common rail and preventing a fuel discharge from the common rail. A pressure drop is detected during the control of the injectors (18a,18b,18c,18d). An independent claim is also included for the following: (1) a computer program (2) a maintenance unit for an internal- combustion engine.