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:
Nov. 14, 1995
Filed:
Jan. 03, 1994
Karl Hofmann, Remseck, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection nozzle for internal combustion engines having a nozzle body with a conical valve seat face and with a valve needle displaceable in the nozzle body, the valve needle having a closing cone cooperating with the seat face in valvelike fashion. To prevent the sealing cone from repeatedly covering the injection ports that begin at the seat face, which can be caused by the natural oscillation of the valve needle during the opening stroke, the valve needle is embodied to have a high natural frequency. To that end, the following segment that adjoins the guide segment guided in the nozzle body and that protrudes freely toward the seat face is embodied as conically tapered toward this seat face. The end segment of the valve needle that carries the closing cone may also be embodied as a thickened head.