Fuel injection valve with integrated spark plug
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United States of America Patent
Stats
-
Jan 22, 2002
Grant Date -
N/A
app pub date -
May 25, 2000
filing date -
Jun 27, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A fuel injection valve (1) having an integrated sparkplug for direct injection of fuel into the combustion chamber of an internal combustion engine and for igniting the fuel injected into the combustion chamber has a valve body (7) which, together with a valve closing body (10) operated by a valve needle (9), forms a seal seat. The valve body (7) and to some extent the valve needle (9) are surrounded radially by an insulating body (6). The insulating body (6) is in turn surrounded radially at least in part by a housing body (2). Ignition electrodes (15, 16) are provided on the valve body (7) and the housing body (2). The valve needle (9) has a first metal guide section (9a) guided in a swirl insert (14), a second metal guide section (9b) guided in the insulating body (6) and an insulating section (9c) arranged between the guide sections (9a, 9b). The guide sections (9a, 9b) are connected in a positive manner to the insulating section (9c).
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