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. 27, 1997
Filed:
May. 05, 1995
Bernhard Just, Kernen, DE;
Ferdinand Reiter, Markgroeningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A valve needle includes a valve needle section which connects the armature section and the valve closing element section, the valve needle section having a solid construction. In order to ensure that the fuel flows in the direction of the valve seat, at least two axial grooves are provided in the armature section. The axial grooves in the armature section are constructed in such a way that the emerging fuel can flow along the outer circumference of the valve needle section in the direction of the valve seat. The valve needle is particularly suitable for injection valves in fuel injection systems of mixture-compression, spark-ignition internal combustion engines.