Patent · US Expired

Method for operating a fuel injection device of an internal combustion engine

US7505846B2 · kind B2 · utility

8Cited by

8References

13Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Wolfgang Stoecklein · Stuttgart, DE
Holger Rapp · Hemmingen, DE
Udo Schulz · Gießen, DE
Hideyuki Iwatsuki · Stuttgart, DE

Key dates

Filing date	Dec 12, 2005
Grant date	Mar 17, 2009
Priority date	—
Expiry date	Mar 30, 2026

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02D2200/063
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A fuel injection device of an internal combustion engine includes a piezoelectric actuator and a valve element that are coupled to one another. The valve element has a pressure stage. An increase in the force acting on the piezoelectric actuator is interpreted as an actual opening of the valve element, and/or a decrease in the force acting on the piezoelectric actuator is interpreted as an actual closing of the valve element, and that these be taken into account at least part of the time in the controlling of the piezoelectric actuator.

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