Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2005-01-04
2005-01-04
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S496000
Reexamination Certificate
active
06837221
ABSTRACT:
An injector is provided which includes a nozzle valve element, a control volume, and an injection control valve including a control valve member for controlling fuel flow from the control volume so as to control nozzle valve movement. Importantly, the injector includes a nozzle valve lift detecting device for detecting nozzle valve lift and providing a nozzle valve element lift feedback signal. Feedback signals are improved and control valve member oscillations are minimized by positioning a valve seat associated with the control valve member a spaced distance from the control volume, positioning a drain orifice such that the nozzle valve element restricts flow through a drain circuit when in an open position and extending the control valve member from the valve seat to the control volume to form an end wall of the control volume.
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Crofts John D.
Rauznitz Peter
Sung Jung-min C.
Truman, III Arthur C.
Brackett, Jr. Tim L.
Cummins Inc.
Miller Carl S.
Nixon & Peabody LLP
Schelkopf J. Bruce
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