Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1995-06-07
1996-06-18
Moulis, Thomas N.
Internal-combustion engines
Charge forming device
Fuel injection system
123506, F02M 6904
Patent
active
055267912
ABSTRACT:
A high-pressure electromagnetic fuel injector having a dual-function valve directly controlled by an electric solenoid. Fuel pressure in a control volume chamber is controlled by the dual-function valve, and a separate control valve is controlled as a function of fuel pressure in the control volume chamber. A spray tip valve is, in turn, controlled as a function of the pressure of fuel controlled by the control valve to inject fuel through a spray tip orifice. The dual-function valve spills fuel during and after the control valve closes, thus reducing the amount of uncontrolled fuel at the end of an injection. The dual-function valve also provides a drain path through which to vent any fuel that leaks past the control valve.
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DeYoung Beckie J.
Straub Robert D.
Teerman Richard F.
Timmer Robert C.
VanAllsburg Michael
Diesel Technology Company
Moulis Thomas N.
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