STEUERVORRICHTUNG FÜR EIN FAHRZEUG

摘要

In a vehicle incorporating an internal combustion engine having in-cylinder injectors and intake manifold injectors and performing engine intermittent operation control, at the end of vehicle operation, the fuel pressure is decreased in both a high-pressure delivery pipe (130) and a low-pressure delivery pipe (160) by actuation (opening) of an electromagnetic relief valve (210) and by stop of operation of a low-pressure fuel pump (180). This prevents deterioration in emission performance at the next engine start attributable to fuel leakage due to degradation in oil tightness of the injectors (110, 120) during the operation stop period. When the engine is temporarily stopped by engine intermittent operation control, while the low-pressure fuel pump (180) is stopped, actuation (opening) of the electromagnetic relief valve (210) is prohibited. At the engine restart after temporary stop, the fuel in the high-pressure delivery pipe (130) having its pressure secured at a certain level is injected to quickly start the engine.