Siemens Vdo Automotive Corporation

Continental Automotive Systems Corporation

Continental Automotive Systems Us, Inc.

Siemens Automotive Corporation

Hamid Sayar

Perry Robert Czimmek

Michael Joseph Hornby

John F Nally, Jr

Farid Heidari Miandoab

Stephen C Bugos

William A Peterson, Jr

David Stockmaster

Dosing structure () supplies diesel fuel to an exhaust passage of a diesel system. The dosing structure includes an electrically operated control valve (). An inlet tube () is coupled with an inlet of the control valve. A first welded joint () is between the inlet tube and the control valve. The inlet tube is constructed and arranged to be coupled to a supply of diesel fuel for feeding fuel to the control valve. A dosing valve () is constructed and arranged to receive fuel from the control valve and deliver the fuel to the exhaust passage. An extension tube () is fluidly coupled between the control valve and the dosing valve to space the control valve from the dosing valve. A second welded joint () is between the extension tube and the control valve and a third welded joint () is between the extension tube and the dosing valve.

Laser welded automotive diesel exhaust HC dosing valve

A heat exchanger, internal to an injector for a variable spray fuel injection system, uses nucleate boiling to maximize the heat flux from the heated metal to the fuel, wherein the nucleate boiling occurs along a control surface characterized by features conducive to generating detaching bubbles to transfer heat energy in a vapor flux. The source of heat flux may be an induction heater coil magnetically coupled to an appropriate loss component so that fuel inside a fuel component is heated to a desired temperature.

Variable spray injector with nucleate boiling heat exchanger

A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. A first coil receives a first signal from a driver to generate a first magnetic field that moves an armature between an open and closed position. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The alternating current signal produces a time varying second magnetic field that induces heating of a magnetically active component with the fuel flow that in turn heats the fuel.

Inductive heated injector using voltage transformer technology

A fuel injector assembly includes a first coil driven by a direct current driver and a second coil driven by an alternating current driver where both the first coil and the second coil share a common connection to reduce the number of external terminal connections. The second coil generates a second magnetic field that is utilized to heat a component in thermal contact with the fuel flow that in turn heats fuel before exiting the fuel injector.

Inductive heated injector using a three wire connection

A gasoline unit injector includes a high speed, high force actuator such as a magnetrostrictive or piezoelectric actuator. The actuator operates a positive displacement diaphragm pump. The pumping volume is isolated from a supply rail by an inlet check valve, and is isolated from the engine manifold by an outlet check valve. Each of the check valves includes a disk having a central anchor and a peripheral valve seat. Diaphragm movement reduces pump volume and thereby displaces fuel at high pressure through outlet valve. Fuel spray is formed by geometry of outlet valve, the frequency of actuation, and mass and pressure of the displaced fuel. Relaxation of actuator, and therefore diaphragm, increases pump volume and thereby draws fuel into pump volume through the check valve.

High speed gasoline unit fuel injector

A fuel injector assembly includes a first coil that induces a time varying magnetic field into a second coil that is utilized to heat fuel flowing through the fuel injector. The second coil generates a second magnetic field generated by a current induced by the first coil into the second coil. The induced current is generated by an alternating current signal that is interposed onto a direct current signal sent to the first coil. The second coil also is electrically connected to pass current induced from the first coil into a component in thermal contact with the flowing fuel. The current from the secondary coil resistibly heats the component to provide an alternate mode of heating fuel flow.

Inductive heated injector using additional coil

A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes: a generally planar surface, a plurality of metering orifices that extends through the generally planar surface, the metering orifices being located radially outward of the seat orifice; and at least one flow channel having a cross-sectional area that decreases in magnitude starting at a location spaced from the longitudinal axis to proximate a perimeter of a metering orifice. A seat subassembly and a metering orifice disc are described. And a method of atomizing fuel is also described.

Fluidic flow controller orifice disc for fuel injector

Unitary fluidic flow controller orifice disc for fuel injector

A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes an outer wall having a surface that defines first and second outer chords generally about the longitudinal axis A-A. The first outer chord intersects the second chord and has a length different than the length of the second outer chord. The metering orifice disc includes an inner wall having a surface that defines first and second inner chords. The first and second inner chords extend generally transverse to the longitudinal axis A-A. The first inner chord intersects the second inner chord. The first inner chord has a length different than the length of the second inner chord. Methods of atomization and targeting are also described.

Asymmetric fluidic flow controller orifice disc for fuel injector

A fuel injector is described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes a generally planar surface, at least two metering orifices, and at least one flow channel. The at least two metering orifices are generally located along an axis extending radially away from the longitudinal axis and radially outward of the seat orifice. Each of the metering orifices has a center defined by the interior surface of the metering orifice extending through the disc. The at least one flow channel extends radially away from the longitudinal axis towards each of the at least two metering orifices. And a method of atomizing fuel is also described.

Fluidic flow controller orifice disc with dual-flow divider for fuel injector

A fuel injector is shown and described. The fuel injector includes an inlet, outlet, seat, closure member, and a metering orifice disc. The metering orifice disc is disposed between the seat and the outlet. The metering orifice disc includes a plurality of metering orifices disposed about the longitudinal axis and a flow channel to each metering orifice disc so that, when the inlet of the fuel injector is provided with a pressurized fluid over a range of pressure from 200 kiloPascals to 600 kiloPascals and the closure member is actuated to the first position, the metering orifice disc provides an atomized fluid having a Sauter-Mean-Diameter of less than 70 microns proximate the outlet of the fuel injector. A method of atomizing is also provided.

Fuel injector with sauter-mean-diameter atomization spray of less than 70 microns

A method of making a metering orifice disc from a work piece is disclosed. The work piece has a first surface spaced apart from a second surface over a first distance. The metering orifice disc has an outer diameter from 4 to 6 millimeters with at least one orifice disposed through the metering disc of about 75 to 150 microns in effective diameter. The method can be achieved by removing material from one of the first and second surfaces of the work piece to define a recessed surface between first and second walls, the recessed surface being located between the first and second surfaces of the work piece; and forming an orifice in the recessed surface proximate a shortest distance between the first and second walls to define two channels that extend towards the longitudinal axis, the orifice extends through the recessed surface to one of the first and second surfaces. A method of making a valve seat is also described.

Methods of making fluidic flow controller orifice disc for fuel injector

A fuel rail that forms a conduit for pressurized fuel to be delivered to at least one fuel injector. The fuel rail includes an elongated member that is corrugated such that the fuel rail acts as a pressure damper. A method of reducing pressure pulsation in a fuel system is achieved by configuring a fuel of a second configuration from an initial configuration, the second configuration having a first portion and a second portion, the first portion having at least three points defining a virtual plane, the first portion including a continuous surface that intersects the virtual plane at a plurality of positions.

Corrugated internal fuel rail damper

Corrugated fuel rail damper

A fuel injection valve for an internal combustion engine includes an armature assembly including an injector needle reciprocable between a closed position and an open position; a needle seat for receiving the injector needle in the closed position, the needle seat including a central opening therethrough; a discharge orifice disk disposed downstream of the needle seat, the discharge orifice disk directing fuel toward a desired location; and a turbulence generator disposed upstream of the discharge orifice disk.

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Newport News, VA, United States of America

Hamid Sayar