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:
Jun. 10, 2003
Filed:
Apr. 19, 2001
Hubert Stier, Asperg, DE;
Dieter Maier, Isle of Palms, SC (US);
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injector for fuel-injection systems of internal combustion engines in which a guide disk is provided upstream of a valve seat, the guide disk fulfilling several functions. In addition to guiding an axially movable valve needle, the guide disk takes on a flow-through function for the fuel. To this end, a passage hole having alternating guide regions and flow regions over its outer circumference is provided in the guide disk, the opening width of the passage hole defined by the guide regions being smaller than the opening width defined by the flow regions. The fuel injector is particularly suitable for use in fuel-injection systems of mixture-compressing internal combustion engines with externally supplied ignition.