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)
Importance
Abstract
A fuel injection nozzle, including a pressure chamber, an accumulator chamber in communication with the pressure chamber and a spring-loaded shunting piston limiting the volume of the accumulator chamber. The spring-loaded shunting piston has first and second ends and a cylindrical guide portion, the first end facing the accumulator chamber and including a guide extension with grooves. The cylindrical guide portion has a diameter to height ratio of 1:0.1 to 1:0.04. The second end of the shunting piston includes a pin of variable cross section which protrudes into a throttle opening of a plate which defines a damping chamber adapted to be filled with fluid, the spring-loaded shunting piston being influenced by pressure in the damping chamber.
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