Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2008-07-29
2008-07-29
Miller, Carl S. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S467000
Reexamination Certificate
active
10520257
ABSTRACT:
A fuel injection system comprising an accumulator volume (10) arranged to be charged with fuel by means of a high pressure fuel pump (12) and for supplying fuel at a first injectable pressure level to a plurality of fuel injectors (22), wherein each injector (22) includes a delivery passage (16, 20), a valve needle (30), which is engageable with a seating to control fuel injection, and a control valve (26) for controlling fuel pressure within a control chamber (28) so as to control movement of the valve needle (30). The control valve (26) has a first operating position in which the control chamber (28) communicates with a low pressure drain and communication between the control chamber (28) and the delivery passage (16, 20) is prevented and a second operating position in which the control chamber (28) communicates with the delivery passage (16, 20) and communication between the control.
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Delphi Technologies Inc.
Miller Carl S.
Wood David P.
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