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:
Feb. 12, 2002
Filed:
Apr. 12, 2000
Giulio Angel Ricci-Ottati, Burton, MI (US);
Russell Harmon Bosch, Gaines, MI (US);
Delphi Technologies, Inc, Troy, MI (US);
Abstract
A fuel injection system is provided for controlling fuel pressure in a common rail through the use of a piezoelectric actuated fuel injector. The fuel injection system includes at least one fuel injector having an axially extending fuel passage therein, a control chamber disposed in the injector, an injector valve axially movable within the fuel passage in accordance with a fuel pressure in the control chamber, and a piezoelectric actuator for actuating the control valve. The fuel injection system further includes a pressure sensor for determining a fuel pressure in the common rail, and a controller electrically connected to the pressure sensor and to the piezoelectric actuator of the fuel injector.