Westport Power Inc.

Delphi Technologies IP Limited

Delphi International Operations Luxembourg S.a.r.l.

Westport Fuel Systems Canada Inc.

George A Meek

Lukhbir Panesar

Anthony Thomas Harcombe

Michael C Wickstone

Simon Backhouse

Thomas Hagon

Lauren Dransfield

Jason Yearsley

Jonathan N Wray

Joseph Stanbridge

Kris Sullivan

Michael Colin Wickstone

A control valve assembly of a fuel injector includes a first valve arrangement wherein a first valve spool is guided in a first hydraulic bore provided in a body of the assembly. The control assembly further includes a first tubular sleeve having a seating portion which end face defines the first seating face, the first sleeve being fixed in the first hydraulic bore and the first spool extending through the sleeve.

Control valve assembly and method of manufacturing thereof

A fuel injector includes a control valve assembly arranged between an actuator assembly and a nozzle assembly. A 3-way valve controls flow for filling or draining a control chamber through a first throttle and through a second throttle for enabling or preventing fuel injection. The second throttle is a through orifice provided in a plate arranged in the control chamber.

Fuel injector

A positioning feature includes a first member so that in an embodiment where the pins of a connector are perpendicular to a main axis, an incorrect angular orientation is prevented by the positioning feature that would contact one of the pins and, a correct angular orientation is assured by the engagement of the first member between the pins.

Positioning feature of a stator assembly of a fuel injector

A fuel injector includes a nozzle having at least one nozzle outlet. A valve needle is moveable with respect to a valve needle seating through a range of movement between a closed position and an open position to control fuel delivery through the at least one nozzle outlet. The movement of the nozzle needle is controlled by fuel pressure within a control chamber. The injector has first and second nozzle control valves for controlling fuel flow into and out of the control chamber to pressurise and depressurise the control chamber, respectively. The first nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain or to place the control chamber in fluid communication with a high pressure supply line. The second nozzle control valve can operate selectively to place the control chamber in fluid communication with a fuel drain.

Fuel injector and method for controlling the same

A nozzle assembly of a dual fuel injector includes a first fuel conduit and a second fuel conduit. An anti-leakage feature of the nozzle assembly includes a cylindrical tubular sleeve axially extending in an inner space of the nozzle body from an upper end attached to the body to a distant lower end, the outer valve member being axially guided through said sleeve.

Dual fuel nozzle arrangement

A fuel injector for an internal combustion engine is disclosed. The fuel injector is particularly suitable for use as a dual fuel injector, and comprises a generally tubular outer valve needle, an inner valve needle slidably received in the outer valve needle, and a nozzle body assembly comprising a tip part and a needle guide part. The tip part defines a seating region for the outer valve needle, and the needle guide part comprises a guide bore for slidably receiving the outer valve needle. In one embodiment, a lower bore region of the needle guide part defines a cavity around the outer valve needle which houses a biasing spring for the outer valve needle and a fuel. A collar for seating the biasing spring can be dimensioned to allow free flow of the fuel from the cavity into an annular accumulator volume defined between the outer valve needle and the bore of the tip part.

A fuel injector for an internal combustion engine is disclosed. The fuel injector is installable in a cylinder head bore of a cylinder head of the engine and has a body region arranged to be received within the cylinder head bore, and a head region arranged to extend outside the cylinder head bore to protrude from the cylinder head when the injector is installed in the cylinder head bore. The injector includes a first valve needle arranged to control the injection of a gaseous fuel from a first outlet, a second valve needle arranged to control the injection of a liquid fuel from a second outlet, a gaseous fuel inlet for admitting the gaseous fuel to the injector, and a liquid fuel inlet port for admitting the liquid fuel to the injector. The gaseous fuel inlet is disposed in the body region of the injector, and the liquid fuel inlet port is disposed in the head region of the injector. The injector can also include an internal accumulator volume so that an external fuel rail is not necessary.

A fuel injector, preferably a dual fuel injector, for an internal combustion engine is disclosed. The fuel injector comprises first and second valve needles () arranged to control the injection of first and second fuels, first and second control chambers () associated with the first and second valve needles () respectively, a first control valve () comprising a first control valve member () and arranged to vary the pressure of a control fluid in the first control chamber () so as to cause opening and closing movement of the first valve needle (), and a second control valve () comprising a second control valve member () and arranged to vary the control fluidpressure in the second control chamber () so as to cause opening and closing movement of the second valve needle (). The first and second control valve members () are arranged for linear movement along a common control valve axis.

A fuel injector () for an internal combustion engine is disclosed. The fuel injector is particularly suitable for use as a dual fuel injector, and comprises a generally tubular outer valve needle (), an inner valve needle () slidably received in the outer valve needle (), and a nozzle body assembly () comprising a tip part () and a needle guide part (). The tip part () defines a seating region () for the outer valve needle (), and the needle guide part () comprises a guide bore () for slidably receiving the outer valve needle (). In one embodiment, the tip part () and the needle guide part () are made from different materials, and a biasing spring () for the outer valve needle () is housed in the nozzle body assembly ().

A fuel injector for an internal combustion engine includes an injector body, a first actuator for controlling movement of a first valve needle for injecting a first fuel into a cylinder of the engine, and a second actuator for controlling movement of a second valve needle for injecting a second fuel into the cylinder. Each of the actuators are axially spaced along a longitudinal axis of the injector body and has a respective conductive element for carrying current to the actuator, the injector further includes an electrical connector module which has first and second electrical connectors for connection with an associated one of the conductive elements for the actuators. The electrical connector module is mounted between the first and second actuators along the longitudinal axis of the injector body.

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Lydney, United Kingdom

George A Meek