Patent · US Expired

Method and control and regulating device for operating an internal combustion engine with piezoelectrically actuated fuel injection valves

US6918379B2 · kind B2 · utility

5Cited by

1References

9Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Rolf Reischl · Stuttgart, DE
Klaus Joos · Walheim, DE
Thomas Frenz · Nördlingen, DE
Klaus Mueller · Tamm, DE
Markus Amler · Rutesheim, DE

Key dates

Filing date	Jul 26, 2002
Grant date	Jul 19, 2005
Priority date	—
Expiry date	Jul 26, 2022

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF02M2200/18
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

In an internal combustion engine, the fuel enters at least one combustion chamber of the internal combustion engine via at least one fuel injection device. A piezoelectric actuator moves a valve element of the fuel injection device. The function of the piezoelectric actuator is monitored and a malfunction is detected. To minimize the risk of damage to the internal combustion engine in the event of a malfunction of the piezoelectric actuator, the fuel mass flow to the fuel injection device is reduced if a malfunction of the piezoelectric actuator is detected.

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