Fuel injection valve for internal combustion engines
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Dec 31, 2002
Grant Date -
Aug 16, 2001
app pub date -
Jan 19, 2001
filing date -
Jan 19, 2000
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An injection valve member for the closing and opening of injection orifices of a valve seat element is installed longitudinally adjustably in a central housing bore of a fuel injection valve. The opening and closing movement sequence of the injection valve member is controlled by a control device. A control piston operatively connected to the injection valve member is loaded, on the one hand, by the fuel system pressure prevailing in a high-pressure zone and, on the other hand, by the fuel control pressure in a control space. The high-pressure zone includes the central housing bore which is closed off sealingly by a control body fixed to the housing. The control space is arranged between the control body and a piston end face and is at least temporarily delimited radially by a control sleeve which is moveable transversely to the longitudinal axis of the housing. A narrow sliding guide between a control piston part and the control sleeve, said sliding guide separating the control space from the high-pressure zone, forms an accurate longitudinal guide for the control sleeve. The fuel injection valve is simple in terms of manufacture and assembly.
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