Directly controlled fuel injection device for a reciprocating internal combustion engine
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Nov 2, 2004
Grant Date -
Aug 7, 2003
app pub date -
Sep 30, 2002
filing date -
Jan 18, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to a fuel injection device for a reciprocating internal combustion engine, comprising a nozzle part (5) with an injection nozzle (13), said nozzle part having a pressure chamber (10) in which a nozzle needle (9) that closes the injection nozzle (13) is guided. Said nozzle needle can be moved into the opening position when subjected to pressure by the fuel to be injected. The pressure chamber (10) is connected to a control part (7) by a connecting channel (6), this control part having a valve chamber (21) into which the connecting channel (6) and a high pressure channel (8) that is connected to a fuel supply (4) open, and in which a valve body (23) is guided. Said valve body (23) acts as a piston system and is held in the closing position by a valve spring and a valve seat (22). The nozzle part also comprises an actuator part (20) which is functionally connected to the valve body (23) and which when activated, moves said valve body in the opening direction and releases the through-flow from the high pressure channel (8) into the connecting channel (6).
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