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. 16, 2002
Filed:
Jul. 11, 2000
Applicant:
Inventors:
Giulio Angel Ricci-Ottati, Burton, MI (US);
Russell Harmon Bosch, Gaines, MI (US);
Kenneth David Mowery, Noblesville, IN (US);
Martin Paul Hardy, Gillingham, GB;
Andrew John Hargreaves, Faversham, GB;
Assignee:
Delphi Technologies, Inc., Troy, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M 3/708 ; H01L 4/1083 ;
U.S. Cl.
CPC ...
F02M 3/708 ; H01L 4/1083 ;
Abstract
A method is provided for detecting injection events in a piezoelectric actuated fuel injector. The method comprises the steps of: (a) providing a piezoelectric element for actuating the injector valve; (b) applying a voltage to the piezoelectric element, thereby actuating the injector valve; and (c) monitoring at least one of the voltage or current associated with the piezoelectric element, wherein changes in voltage or current are indicative of injection events in the fuel injector.