Fuel injector
AssigneeDelphi Technologies Holding S.arl
InventorNATHAN PETER KEELER
Life of this patent
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Abstract
The present invention relates to a fuel injector for use in a fuel system of an internal combustion engine. The fuel injector has a supply passage for high pressure fuel and an injection nozzle. The injection nozzle includes a valve needle which can engage with a valve needle seating to control fuel delivery from the fuel injector. A first control valve is provided for controlling fuel pressure within a control chamber to control the valve needle. The fuel injector also includes a second control valve for controlling fuel pressure within a low pressure drain. The invention also relates to a control valve for controlling fuel pressure within a low pressure drain.
Claims15
A fuel injector for use in a fuel system for an internal combustion engine, the fuel injector comprising:
- a supply passage for high pressure fuel,
- an injection nozzle including a valve needle which is engageable with a valve needle seating to control fuel delivery from the injector, and
- a first control valve for controlling fuel pressure within a control chamber to control the valve needle;
- wherein the fuel injector further comprises a second control valve for controlling fuel pressure within a low pressure drain, the second control valve being a one-way valve.
A control valve for controlling fuel pressure in a low pressure drain of a fuel injector for an internal combustion engine, the control valve comprising a control valve member and a control valve seat;
- wherein the control valve member is biased towards the control valve seat to close the control valve.
A one-way valve comprising a C-clip for controlling fluid flow through an aperture.
Dependencies are inferred from the claim text.