Title:
CONTAMINANT TOLERANT COMPRESSED NATURAL GAS INJECTOR AND METHOD OF DIRECTING GASEOUS FUEL THERETHROUGH
Document Type and Number:
WIPO Patent Application WO1999061780
Kind Code:
A9
Abstract:
An electromagnetically actuable fuel injector for an internal combustion engine is disclosed having a fuel inlet connector (18) and an armature (14) having a valve needle (16) attached thereto and positioned adjacent the fuel inlet connector (18) and spaced therefrom by a working gap (15). The armature defines a generally elongated central opening (11) to receive fuel flow from the fuel inlet connector. The fuel inlet connector (18) has a fuel outlet end facing a fuel inlet end of the armature (14) and includes a plurality of radially extending raised pads separated by a corresponding plurality of radially extending recessed portions to reduce the contact area between the fuel inlet connector and the armature when the armature is moved upwardly, and to promote fuel flow transversely across the working gap therebetween to establish a first fuel flow path outside of the armature. The first fuel flow path prevents contaminants from accumulating in the working gap (15).
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Inventors:
FOCHTMAN JAMES PAUL
WRIGHT DANNY ORIEN
COHEN JAMES H
WRIGHT DANNY ORIEN
COHEN JAMES H
Application Number:
PCT/US1999/011605
Publication Date:
June 08, 2000
Filing Date:
May 26, 1999
Export Citation:
Assignee:
SIEMENS AUTOMOTIVE CORP LP (US)
International Classes:
F02M21/02; F02M51/06; F02M61/12; (IPC1-7): F02M51/06; F02M21/02
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