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. 06, 2004
Filed:
Dec. 17, 2001
Applicant:
Inventor:
Katsuoki Itoh, Leonberg, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05B 1/08 ; B05B 1/30 ; F02M 3/900 ;
U.S. Cl.
CPC ...
B05B 1/08 ; B05B 1/30 ; F02M 3/900 ;
Abstract
In a fuel injection nozzle having a nozzle body, a nozzle needle that is displaceable in the nozzle body, a piezoelectric actuator that is connected to the nozzle needle, and a compensation piston on which the piezoelectric actuator is braced and which protrudes into a compensation chamber that is filled with a fluid, where the compensation chamber communicates with a supply volume through an inlet of small cross section, a simpler design is to be attained. To that end, it is provided that the supply volume is subjected to variable pressure making it possible to dispense with a separate restoring spring for the nozzle needle.