Injection nozzle
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United States of America Patent
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-
Feb 23, 1999
Grant Date -
N/A
app pub date -
Feb 28, 1997
filing date -
Mar 30, 1996
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An injection nozzle comprises a valve needle engageable with a seating. The needle includes a surface arranged such that when the needle occupies a fully lifted position, part of the surface is exposed to the fuel pressure within a control chamber whilst a second part of the surface is exposed to the fuel pressure within a second chamber. Independent restricted passages provide communication between the control and second chambers and a supply line. A control valve communicates with the second chamber to control operation of the injection nozzle. The control valve is actuated by an electromagnetic actuator having a core arrangement--armature air gap of tapering axial length.
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Cited Art Landscape
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