A fuel injection control device for an internal combustion...

F - Mech Eng,Light,Heat,Weapons – 02 – D

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F02D 41/38 (2006.01) F02D 29/02 (2006.01) F02D 41/04 (2006.01) F02M 47/00 (2006.01) F02M 25/07 (2006.01) F02N 11/08 (2006.01)

Patent

CA 2455574

The pressure within the common-rail 3 is reduced when the engine is stopped without an operation of the automatic engine stopping and restarting device for automatically stopping and restarting the engine to improve fuel consumption. A reducing amount of the pressure within the common-rail 3 when the engine is stopped with an operation of the automatic engine stopping and restarting device is made smaller than that when the engine is stopped without an operation of the automatic engine stopping and restarting device.

L'invention concerne une commande d'injection de carburant d'un moteur à combustion interne. Dans cette commande, la pression à l'intérieur d'une rampe (3) d'injection sous pression est réduite lorsque le moteur est arrêté autrement que sous l'action du dispositif d'arrêt et de redémarrage automatique du moteur qui permet de couper et de redémarrer automatiquement la moteur afin d'améliorer la consommation de carburant et, lorsque le moteur est arrêté par le dispositif d'arrêt et de redémarrage automatique du moteur, la pression réduite dans la rampe (3) d'injection est abaissée à un niveau plus bas que le niveau de pression établi lorsque le moteur est arrêté autrement que par le dispositif d'arrêt et de redémarrage automatique du moteur.

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