| 摘要 |
The device serves for more reliable switching of solenoid valves used in carburettors for overrun cut-off with idling fuel shutoff or idling mixture shutoff on motor vehicles. The idling fuel feed or the idling mixture feed in an internal combustion engine is prevented when the internal combustion engine is operating in overrun conditions. The device comprises an initial stage (1), sensitive to the engine speed, which triggers a solenoid valve (MV) for overrun cut-off basically when a lower speed level is reached, thereby ensuring that the solenoid valve releases the fuel feed and a vacuum switch, (S1, S2) responding to the intake pipe pressure and thereby sensing in particular the closed position of the throttle valve arranged in the intake pipe, which vacuum switch likewise causes triggering of the solenoid valve irrespective of the speed. <IMAGE> |
