Shaping a fuel charge in a combustion chamber with multiple drivers and/or ionization control

• US 8,365,700 B2
• Filed: 07/21/2010
• Issued: 02/05/2013
• Est. Priority Date: 01/07/2008
• Status: Expired due to Fees

• Current Assignee: Advanced Green Innovations, LLC
• Original Assignee: McAlister Technologies, LLC
• Inventors: McAlister, Roy E.
• Primary Examiner(s): Gimie, Mahmoud
• Application Number:
  US12/841,149
• Publication Number:
  US 20110056458A1
• Time in Patent Office: 930 Days
• Field of Search: 123/297, 123/301, 123/305, 123/295, 123/430, 123/498, 123/490, 123/499, 123/467, 123/299, 239/102.2, 239/585.1
• US Class Current: 123/297
• CPC Class Codes: F02D 35/021 using an ionic current sensor
• CPC Class Codes: F02D 37/02 one of the functions being ignition
• CPC Class Codes: F02D 41/3836 Controlling the fuel pressure
• CPC Class Codes: F02D 41/40 with means for controlling injection timing or duration
• CPC Class Codes: F02D 41/402 Multiple injections
• CPC Class Codes: F02M 51/0671 the armature having an elongated valve body attached thereto
• CPC Class Codes: F02M 57/005 the devices being sensors
• CPC Class Codes: F02M 57/06 the devices being sparking plugs
• CPC Class Codes: F02M 69/041 having vibrating means for atomizing the fuel, e.g. with sonic or ultrasonic vibrations
• CPC Class Codes: F02P 15/006 Ignition installations combined with other systems, e.g. fuel injection to advance or to retard the ignition spark F02P5/045

Abstract

The present disclosure is directed to injectors with integrated igniters providing efficient injection, ignition, and complete combustion of various types of fuels. These integrated injectors/igniters can include, for example, multiple drivers used to shape charges, controllers used to modify operations based on ionization parameters, and so on.

Claims

1. A fuel injector, comprising:

a body having a middle portion extending between a base portion and a nozzle portion;

wherein the body includes a channel configured to allow fuel to pass between the base portion and the nozzle portion to a combustion chamber of a fuel combustion engine;

an actuator contained within the channel of the body, the actuator having a distal end and a proximal end;

a valve operably coupled to the distal end of the actuator;

a driver operably connected to the proximal end of the actuator;

a first force generator positioned adjacent the driver and configured to impart a force to the driver to move the actuator and operate the valve between an open position and a closed position; and

a second force generator positioned adjacent the driver and configured to impart a force to the driver to produce a vibration of the actuator and the valve while the valve is in the open position.

2. The fuel injector-igniter of claim 1, further comprising a controller operably connected to the first force generator and the second force generator and configured to provide operating instructions to the first force generator and the second force generator, the instructions including operating parameters that modify the vibration of the actuator and the valve to shape a pattern of a fuel burst injected into the fuel combustion engine.

3. The fuel injector-igniter of claim 1, wherein the first force generator is an electromagnetic component configured to cause the actuator to move the valve laterally with respect to the channel and the second force generator is a piezoelectric component configured to modulate the lateral movements of the valve.

4. The fuel injector-igniter of claim 1, further comprising a controller operably connected to the first force generator and the second force generator and configured to provide operating instructions to the first force generator and the second force generator, the instructions including operating parameters to open and vibrate the valve to inject a patterned fuel burst into the fuel combustion engine.

5. The fuel injector-igniter of claim 1, further comprising:

a controller operably connected to the first force generator and the second force generator and configured to provide operating instructions to the first force generator and the second force generator;

a sensor configured to measure parameters associated with a fuel ignition event within the fuel combustion engine; and

a flow modification component located at the controller and configured to modify the operating instructions provided to the first force generator and the second force generator based on data received from the sensor and associated with the measured parameters.

6. The fuel injector of claim 1 wherein the valve includes a first ferromagnetic material, wherein the nozzle portion includes a valve seat having a second ferromagnetic material, and wherein the first and second ferromagnetic materials are mutually attracted to facilitate rapid actuation of the valve.

7. A method in a controller of a fuel injector for injecting fuel into a direct fuel injection engine, comprising:

measuring at least one parameter associated with an air-fuel mixture inside a combustion chamber of a direct fuel injection engine; and

transmitting instructions to one or more drivers that manipulate a valve of the fuel injector, wherein the instructions include;

information associated with movement of the valve into an open position to dispense fuel from the fuel injector into the combustion chamber; and

instructions associated with inducing a vibration of the valve when the valve is in the open position to modify the shape of the fuel dispensed into the combustion chamber to produce a layered pattern of fuel.

8. The method of claim 7, wherein measuring at least one parameter associated with the air-fuel mixture includes measuring a degree of ionization of the air-fuel mixture during an ignition of the air-fuel mixture within the combustion chamber.

9. The method of claim 7, wherein measuring at least one parameter associated with the air-fuel mixture includes measuring a ratio of air to fuel within the air-fuel mixture.

10. The method of claim 7, wherein measuring at least one parameter associated with the air-fuel mixture includes measuring a rate of combustion of the air-fuel mixture during an ignition event within the combustion chamber.

11. A fuel injection system configured to inject fuel into a combustion chamber of a combustion engine, the system comprising:

a fuel dispensing component including a valve, wherein the fuel dispensing component is configured to dispense fuel having a certain ratio of surface area to volume into the combustion chamber;

a measurement component, wherein the measurement component is configured to measure conditions within the combustion chamber; and

a control component in communication with the fuel dispensing component and the measurement component, wherein the control component is configured to provide instructions to the fuel dispensing component to induce a vibration of the valve to produce a stratified burst of fuel into the combustion chamber.

12. The system of claim 11, wherein the fuel dispensing component includes:

a body having a middle portion extending between a base portion and a nozzle portion, wherein the nozzle portion is configured to connect the body to the combustion engine;

a channel located within the body configured to store fuel and allow fuel to flow from the base portion to the nozzle portion;

an actuator located within the channel and having a distal end and a proximal end;

a first driver operably connected to the proximal end of the actuator, wherein the first driver receives at least a first portion of the instructions provided by the control component associated with opening of the valve; and

a second driver operably connected to the proximal end of the actuator, wherein the second driver receives at least a second potion of the instructions provided by the control component associated with the vibration of the valve.

13. The system of claim 11, wherein the measurement component is configured to measure an ionization parameter of an air-fuel mixture within the combustion chamber during a combustion event.

14. The system of claim 11, wherein the measurement component is a sensor located within the fuel dispensing component.

15. The system of claim 11, wherein the control component includes a processor and memory, wherein the memory contains a relational database that includes entries relating various ratios of surface area to volume for dispensed fuel with respect to conditions within the combustion chamber.

16. The system of claim 11 wherein the valve includes a first ferromagnetic material, wherein the fuel dispensing component includes a nozzle portion having a valve seat that includes a second ferromagnetic material, and wherein the first and second ferromagnetic materials are mutually attracted to facilitate rapid actuation of the valve.

17. A method for injecting fuel into a combustion chamber of an engine, the method comprising:

applying a first driving force to a valve of a fuel injector, wherein the first driving force opens the valve and causes fuel having a certain shape within the fuel injector to flow into a combustion chamber of an engine; and

applying a second driving force to the valve of the fuel injector, wherein the second driving force vibrates the valve at a certain frequency and causes the fuel to flowing into the combustion chamber to have a modified shape.

18. The method of claim 17, further comprising:

receiving information associated with ionization of a mixture of the fuel and air during an ignition event within the combustion chamber; and

applying the second driving force to move the valve at a frequency different than the certain frequency based on the received ionization information.

19. The method of claim 17, wherein the certain shape is defined by a certain ratio of the surface area of the fuel to the volume of the fuel.

20. The method of claim 17, further comprising ionizing the fuel to produce a plasma.

21. The method of claim 17, further comprising ionizing an oxidant to produce a plasma.

22. The method of claim 17, further comprising providing excess air as an insulant to minimize heat losses.