Fuel injection valve for internal combustion engines with damping chamber reducing pressure oscillations
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 6, 2007
Grant Date -
Apr 1, 2004
app pub date -
Mar 22, 2002
filing date -
May 5, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel injection valve for internal combustion engines, having a housing (12; 48) in which a pistonlike valve member (35; 60) is disposed longitudinally displaceably in a bore (34; 57). The valve member (35; 60) is surrounded, over at least part of its length, by a pressure chamber (37; 68), embodied in the housing (12; 48), that can be filled with fuel at high pressure; the valve member (35; 60) controls the communication of the pressure chamber (37; 68) with at least one injection opening (39; 66). The pressure chamber (37; 68) communicates with a damping chamber (46; 80), embodied in the housing (12; 48), via at least one throttle (44; 78) disposed in the housing (12; 48), so that pressure fluctuations that occur in the damping chamber (46; 60) rapidly fade (FIG. 1).
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