Patent · US Active

Method for the injector-specific diagnosis of a fuel injection device and internal combustion engine having a fuel injection device

US9903331B2 · kind B2 · utility

1Cited by

10References

12Claims

0Family size

Assignee

MTU FRIEDRICHSHAFEN GMBH · DE

Inventors

Michael Walder · Ravensburg, DE
Andreas MEHR · Kreßbronn, DE
Frank MLICKI · Radolfzell, DE
Alexander Bernhard · Meckenbeuren, DE
Christian Wolf · Arlington, US

Key dates

Filing date	Aug 1, 2014
Grant date	Feb 27, 2018
Priority date	—
Expiry date	Apr 26, 2035

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/0618
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A method for the injector-specific diagnosis of a fuel injection device of an internal combustion engine, including the following steps: detecting a pressure progression in an individual accumulator of an injector in a time-resolved manner; evaluating the detected pressure progression; determining if there is a fault state of the injection device in the region of the injector on the basis of the detected and evaluated pressure progression; and identifying the fault state on the basis of the detected and evaluated pressure progression.

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