Method for controlling a fuel supplying device of an internal combustion engine

US7624719B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Erwin Achleitner · Obertraubling, DE
• Martin Cwielong · Regensburg, DE
• Gerhard Eser · Munich, DE

Key dates

• Filing date: Feb 23, 2005
• Grant date: Dec 1, 2009
• Expiry date: Jun 7, 2026

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02D2250/31
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

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.