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. 02, 1989
Filed:
Dec. 17, 1987
Max Greiner, Gerlingen, DE;
Udo Hafner, Lorch, DE;
Waldemar Hans, Bamberg, DE;
Heinrich Knapp, Leonberg, DE;
Wolfgang Kramer, Kemmern, DE;
Rudolf Krauss, Stuttgart, DE;
Ferdinand Reiter, Markgroningen, DE;
Peter Romann, Stuttgart, DE;
Rudolf Sauer, Benningen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
An electromagnetically actuatable fuel injection valve which has an internal scavenging system for cleaning dirt particles from a magnetic field air gap. A portion of the fuel flowing in via an inflow line and an inflow opening reaches the vicinity of an air gap defined on one side by an armature and on the other by magnetic poles and flows through this gap, and then flows via an outflow opening to enter an outflow line that communicates with a fuel return. As a result of the described scavenging of the air gap, dirt particles are prevented from becoming firmly attached there and causing impairment of the performance of the fuel injection valve.