The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 19, 2005
Filed:
Jul. 26, 2002
Rolf Reischl, Stuttgart, DE;
Klaus Joos, Walheim, DE;
Thomas Frenz, Noerdlingen, DE;
Klaus Mueller, Asperg, DE;
Markus Amler, Leonberg-Gebersheim, DE;
Rolf Reischl, Stuttgart, DE;
Klaus Joos, Walheim, DE;
Thomas Frenz, Noerdlingen, DE;
Klaus Mueller, Asperg, DE;
Markus Amler, Leonberg-Gebersheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
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.