Patent · US Expired

Method and device for monitoring a fuel system of an internal combustion engine

US6840222B2 · kind B2 · utility

8Cited by

6References

11Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Stephan Schilling · Murr, DE
Wolfgang Dehmel · Markgröningen, DE
Andreas Kellner · Birkenau, DE

Key dates

Filing date	Apr 26, 2001
Grant date	Jan 11, 2005
Priority date	—
Expiry date	Apr 26, 2021

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/0602
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A device and a method of monitoring a fuel metering system of an internal combustion engine, in particular a common rail system. The fuel is compressed by a pump, and a pressure variable characterizing the fuel pressure is determined. An error is detected when a filtered pressure variable deviates from a threshold value.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.