Fuel injection nozzle
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United States of America Patent
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-
Jun 30, 1992
Grant Date -
N/A
app pub date -
Nov 7, 1990
filing date -
Jan 12, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a fuel injection nozzle, particularly pump jet, with a nozzle plunger (3) that is spring-loaded in the closing direction, whereby the nozzle plunger (3) extends, at its end turned away from the spray openings, into a damping chamber (28) that can be filled with fuel and has a pressure pin (23), which is surrounded with a stabilized projection (26) that forms a stop for a shoulder (22) of the nozzle plunger (3) and whereby the stable wall of the damping chamber (28), during the stroke movement of the nozzle plunger (3), defines, with the pressure pin (23), a throttle opening, which opens into a drain (11) and/or another chamber (12), the throttle opening cross section is largest at the beginning of the stroke, whereby an optimum and precisely reproducible injection curve can be achieved.
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