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:
Apr. 21, 1998
Filed:
Oct. 09, 1996
Applicant:
Inventors:
Assignee:
Mercedes-Benz AG, Stuttgart, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
2395332 ; 239584 ; 25112906 ;
Abstract
In a piezo-control valve for fuel injection systems of internal combustion engines wherein a piezo-ceramic actuating rod is mounted with one end firmly to one end of a valve housing having a nozzle body with a valve seat disposed at the other end and a nozzle control needle is disposed in the nozzle body and pressed by the piezo-ceramic actuating rod onto the valve seat in the nozzle body when the piezo-ceramic actuating rod is not activated, the valve housing includes a sleeve-like portion disposed around the piezo-ceramic actuating rod which consists of a material compensating for temperature-caused changes in the length of the piezo-ceramic actuating rod.