Method for controlling engine for driving hydraulic pump to...

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

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F02D 29/04 (2006.01) E02F 9/22 (2006.01) F04B 49/00 (2006.01)

Patent

CA 2062591

In a method for controlling an engine for driving a hydraulic pump to supply a pressurized fluid to at least one hydraulic actuator in a construction machinery, a fuel flow supplied to the engine is decreased so that an output rotational speed of the engine is decreased to decrease an excess output of the engine and the fuel flow is increased to increase the output rotational speed of the engine when a load of the engine for driving the hydraulic pup is more than a first level after the engine output decreasing step.

La présente invention a pour objet une méthode pour la régulation d'un moteur utilisé pour entraîner une pompe hydraulique assurant l'alimentation d'au moins un actionneur hydraulique en liquide pressurisé dans une machine de construction; le débit de carburant acheminé vers le moteur est diminué de manière à réduire le régime du moteur et la puissance de sortie du moteur lorsque la charge du moteur entraînant la pompe hydraulique dépasse un premier niveau après une première étape de réduction de la puissance de sortie du moteur.

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