Method for controlling a fuel supplying device of an...

Details Method for controlling a fuel supplying device of an... Method for controlling a fuel supplying device of an...

2005-02-23

2009-12-01

Kwon, John T (Department: 3747)

Internal-combustion engines

Charge forming device

Fuel injection system

C123S447000, C123S458000

Reexamination Certificate

active

07624719

ABSTRACT:
Disclosed is a fuel supplying device of an internal combustion engine, comprising a low-pressure circuit, a high-pressure pump coupled to the low-pressure circuit and conveys fuel into a fuel reservoir, a volume flow control valve assigned to the high-pressure pump, an electromechanical pressure regulator connected to the fuel reservoir and the low-pressure circuit and can direct fuel from the fuel reservoir into the low-pressure circuit, a regulating mechanism which generates an actuation signal for the volume flow control valve by a first controller in a first mode which generating an actuation signal for the electromechanical pressure regulator with the aid of a second controller in a second mode. The mode of the fuel supplying mechanism is switched in accordance with a fuel pressure error value resulting from a detected fuel pressure and a predefined fuel pressure. The mode can additionally be switched according to the throughput of the high-pressure pump.

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