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:
Sep. 03, 1991
Filed:
Nov. 24, 1987
Volker Holzgrefe, Ditzingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An injection valve for fuel injection systems of internal combustion engines which is used for injection of fuel into the intake tube. The injection valve includes a valve housing in which a core that cooperates with an armature is located. Connected to the valve housing is a nozzle body in which a conical valve seat face is formed, with which a sealing section of a valve needle actuated by the armature cooperates. The valve needle is guided by guide sections in a guide bore of the nozzle body, and upstream of the sealing section, the valve needle has a cylindrical section which protrudes through a central opening of an insert body. The insert body rests with a jacket sealing face on the valve seat face and has flow openings that lead from upstream to downstream of the insert body and are aimed at the valve seat face.