CO-AXIAL DUAL FLUIDS METERING SYSTEM AND METHODS

• US 20190309718A1
• Filed: 05/23/2019
• Published: 10/10/2019
• Est. Priority Date: 04/05/2013
• Status: Active Grant

• Current Assignee: Enginetics LLC
• Original Assignee: Enginetics LLC
• Inventors: Lull, Joseph, Warner, Justin
• Granted Patent: US 11,635,051 B2
• Time in Patent Office: Days
• CPC Class Codes: F02M 21/0254 Electric actuators, e.g. solenoid or piezoelectric
• CPC Class Codes: F02M 21/026 Lift valves, i.e. stem operated valves
• CPC Class Codes: F02M 21/0278 Port fuel injectors for single or multipoint injection into the air intake system
• CPC Class Codes: F02M 51/0617 having two or more electromagnets
• CPC Class Codes: F02M 51/0682 the body being hollow and its interior communicating with the fuel flow F02M51/0675 takes precedence
• CPC Class Codes: F02M 61/162 Means to impart a whirling motion to fuel upstream or near discharging orifices
• CPC Class Codes: F02M 67/12 having valves
• CPC Class Codes: F02M 69/047 injectors with air chambers, e.g. communicating with atmosphere for aerating the nozzles F02M69/325 takes precedence
• CPC Class Codes: Y02T 10/30 Use of alternative fuels, e.g. biofuels

Abstract

A metering system for a fuel atomizer includes a housing having a fuel inlet and an oxidizer inlet arranged coaxially, and an oxidizer metering device having a plurality of oxidizer channels, an oxidizer flow controller, and a fuel metering device. The oxidizer channels are spaced apart circumferentially in the housing and are arranged angled in at least one of a radially inward direction and a tangential direction to create a swirl of oxidizer flow in a mixing chamber of the fuel atomizer. The oxidizer flow controller is configured to control flow of oxidizer from the oxidizer inlet to the plurality of oxidizer channels. The fuel metering device is configured to control fuel flow from the fuel inlet to the mixing chamber.

Claims

1. A metering system for a fluid atomizer, comprising:

a housing having a first fluid inlet, a second fluid inlet, an outlet, a mixing chamber, a plurality of first fluid channels, and a flow channel provided between the first fluid inlet and the plurality of first fluid channels;

a first fluid flow controller comprising;

a rearward most surface arranged away from the housing outlet;

a forward most surface arranged toward the housing outlet;

wherein the first fluid flow controller is movable in the flow channel to control flow of first fluid from the first fluid inlet to the plurality of first fluid channels;

a second fluid metering device extending through the first fluid flow controller from a location rearward of the rearward most surface to a location forward of the forward most surface of the first fluid flow controller to deliver the second fluid from a location rearward of the first fluid flow controller to the mixing chamber.

2. The metering system of claim 1, further comprising a first solenoid operable to move the first fluid flow controller between a closed position sealing the plurality of first fluid channels and an open position providing flow communication between the first fluid inlet and the plurality of first fluid channels.

3. The metering system of claim 2, further comprising a second solenoid operable to move the second fluid flow controller between a closed position and an open position providing flow communication between the second fluid inlet and the mixing chamber, the first and second fluid flow controllers being movable independently relative to each other by operation of the first and second solenoids, respectively.

4. The metering system of claim 1, wherein the first fluid flow controller comprises a plurality of pins that move axially between a closed position sealing the plurality of first fluid channels and an open position providing flow communication between the first fluid inlet and the plurality of first fluid channels.

5. The metering system of claim 1, wherein the plurality of first fluid channels are angled radially inward at an angle relative to a longitudinal axis of the metering system.

6. The metering system of claim 1, wherein the second fluid metering device is arranged radially inward from and coaxially with the first fluid metering device.

7. The metering system of claim 1, wherein the plurality of first fluid channels are spaced apart circumferentially and angled in at least one of a radially inward direction and a tangential direction to create a swirl of first fluid flow in the mixing chamber.

8. The metering system of claim 1, wherein the plurality of first fluid channels are angled tangentially relative to a longitudinal axis of the metering system.

9. The metering system of claim 1, wherein the plurality of first fluid channels comprises at least 10 channels.

10. A method of operating a fluid atomizer, comprising:

providing a first fluid metering device, a second fluid metering device, a mixing chamber, a first fluid inlet, and a plurality of first fluid channels positioned between the mixing chamber and the first fluid inlet, the second fluid metering device extending from a front end to a rear end of the first fluid metering device;

moving the first fluid metering device to control first fluid flow through the plurality of first fluid channels to the mixing chamber to create a flow of first fluid into the mixing chamber;

moving the second fluid metering device independent of movement of the first fluid metering member to control second fluid flow to the mixing chamber to create a mixture of first fluid and second fluid in the mixing chamber, the flow of second fluid being delivered from a location rearward of the first fluid metering member to the mixing chamber; and

dispensing the mixture out of the fluid atomizer.

11. The method of claim 10, further comprising providing a first solenoid and operating the first solenoid to move the first fluid metering member relative to the plurality of first fluid channels.

12. The method of claim 11, further comprising providing a second solenoid and operating the second solenoid to move the second fluid metering member relative to the first fluid metering member.

13. The method of claim 10, wherein the first fluid metering device includes a plurality of pins arranged adjacent to the plurality of first fluid channels, and moving the first fluid metering device includes moving the plurality of pins relative to the plurality of first fluid channels.

14. The method of claim 10, wherein the plurality of first fluid channels are arranged circumferentially spaced apart and are angled in at least one of a radial direction and a tangential direction, the method further comprising providing a swirl flow in the mixing chamber with the plurality of first fluid channels.

15. A fluid mixing device, comprising:

a mixing chamber;

at least two first fluid inlets;

a first fluid metering device axially movable to control delivery of a first fluid from the at least two first fluid inlets to the mixing chamber;

a second fluid metering device extending through the first fluid metering device from a front end to a rear end of the first fluid metering device and configured to deliver a second fluid from a location rearward of the first fluid metering device to the mixing chamber at a location forward of the first fluid metering device.

16. The fluid mixing device of claim 15, further comprising a first fluid chamber positioned between the at least two first fluid inlets and the mixing chamber, and the first fluid metering device is movable axially within the first fluid chamber to control flow of the first fluid to the mixing chamber.

17. The fluid mixing device of claim 16, further comprising a plurality of circumferentially spaced apart channels arranged between the first fluid chamber and the mixing chamber, and the first fluid metering device is operable to control flow of the first fluid into the plurality of circumferentially spaced apart channels.

18. The fluid mixing device of claim 15, wherein the at least two supply ducts include at least four supply ducts arranged at equally spaced apart circumferential locations.

19. The fluid mixing device of claim 15, wherein the first fluid metering device is coextensive with the second fluid metering device along an entire length of the first fluid metering device.

20. The fluid mixing device of claim 15, wherein the first and second fluid metering devices are movable independent of each other.