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:
Feb. 27, 1990
Filed:
Feb. 10, 1989
Wilhelm Kind, Bamberg, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection valve which is used to inject fuel into the intake tube of a mixture compressing internal combustion engine having externally supplied ignition. The fuel injection valve includes a nozzle body, in which a valve seat face is embodied. Cooperating with the valve seat face is a valve needle on which an armature that is electromagnetically actuated by a magnet coil is secured. The valve needle has a first guide section and a second guide section. A flat plate is disposed downstream of the valve seat face and four bores spaced apart from one another by equal intervals are provided in the flat plate. The guide sections have faces extending approximately in the direction of the longitudinal axis of the valve, which are distributed uniformly over the circumference of the guide sections and give the guide sections the shape of pentagons, so that the equality of distribution of the ejected fuel mass at the fuel injection cone is improved and the static flowthrough quantity is less dependent on the angular position of the valve needle. The number of bores on the flat plate is one less than the number of faces on each guide section.