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. 18, 1999
Filed:
Nov. 13, 1997
Ulrich Augustin, Kernen, DE;
Daimler-Benz AG, Stuttgart, DE;
Abstract
In a fuel injector for a fuel injection system of an internal combustion engine including an injector housing with an injection nozzle controlled by a valve needle extending through a cylindrical fuel pressure space from which fuel under pressure is supplied to the fuel injection nozzle, the fuel pressure space includes a flow limiting piston with a seating surface at its end adjacent the needle tip and the injector housing has a valve seat disposed opposite the piston seating surface for blocking fuel flow to the injector nozzle when the flow limiting piston is seated on the valve seat and the flow limiting piston is spring-biased away from the valve seat with a force which is sufficient to normally hold the flow limiting piston away from the valve seat, but which permits closing of the valve when the fuel flow to the injector nozzle becomes excessive.