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:
May. 14, 1985
Filed:
May. 05, 1983
Applicant:
Inventor:
Paul Fussner, Sindelfingen, DE;
Assignee:
Robert Bosch GmbH, Stuttgart, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02M / ;
U.S. Cl.
CPC ...
2395338 ;
Abstract
A fuel injection nozzle for internal combustion engines is proposed which has a stepped piston which converts a medium pressure in the fuel inflow line into high pressure in accordance with the ratio between its piston surface areas. The stepped piston and the high-pressure chamber are disposed to surround the valve needle in accordance with the invention, resulting in a space-saving embodiment. The closing spring of the valve needle can be advantageously accommodated in the high-pressure chamber and can simultaneously act as the return spring for the stepped piston so that a separate part for that purpose can be dispensed with.