David R Tuttle

US Patent:

7200985, Apr 10, 2007

Filed:

May 18, 2004

Appl. No.:

10/847813

Inventors:

David J. Tuttle - South Bend IN, US
Steven Fisher - South Bend IN, US
Christopher D. Eick - Phoenix AZ, US
Michael A. McPherson - Phoenix AZ, US

Assignee:

Honeywell International Inc. - Morris Township NJ

International Classification:

F02C 7/232
F02C 9/26

US Classification:

60 39094, 60 39281

Abstract:

A fuel control system for a gas turbine engine is disclosed that includes a flow path carrying fuel from a fuel source to a combustion chamber, an ecology valve for removing a quantity of fuel from the flow path, the ecology valve being shiftable in a first direction from a first position to a second position and in a second direction from said second position to said first position and a fuel line connected between the flow path and the ecology valve for moving fuel between the flow path and the ecology valve to bias the ecology valve toward the second position, where the fuel line is configured, such as by the inclusion of an orificed check valve 150 therein, to allow fuel to move therethrough away from the ecology valve at a greater rate than toward the ecology valve.

US Patent:

7966995, Jun 28, 2011

Filed:

Sep 5, 2007

Appl. No.:

11/850302

Inventors:

Gregory A. Lafferty - Plymouth IN, US
David J. Lawrence - South Bend IN, US
David J. Tuttle - South Bend IN, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F02M 37/04
F02M 37/00

US Classification:

123511, 60 39281

Abstract:

A system and method provide dual level pressurization control of a fuel supply system based on whether fuel is being supplied to one or more secondary fuel loads. Fuel pump discharge backpressure is maintained above either a first minimum pressure value or a lower second minimum pressure value by determining whether fuel is being supplied to one or more secondary fuel loads. The fuel pump discharge pressure is maintained above the first minimum pressure value if it is determined that fuel is being supplied to the one or more secondary loads. The fuel pump discharge backpressure is maintained above the lower second minimum pressure value if it is determined that fuel is not being supplied to the one or more secondary loads.

US Patent:

8316630, Nov 27, 2012

Filed:

Aug 27, 2008

Appl. No.:

12/199328

Inventors:

Paul Futa - North Liberty IN, US
David Tuttle - South Bend IN, US
David Lawrence - South Bend IN, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F02C 9/00
F02C 9/26

US Classification:

60 39281, 60790

Abstract:

A flow equalizing override assembly is provided for use in conjunction with a gas turbine engine (GTE) and a fuel divider system. In one embodiment, the flow equalizing override assembly includes a housing assembly, a fuel divider (FD) valve, a remotely-actuatable valve, and a controller. The FD valve includes: (i) a piston slidably disposed within the housing assembly and movable between a default position and a flow equalizing position, and (ii) a control chamber defined by the piston and the housing assembly. The remotely-actuatable valve is fluidly coupled to the control chamber and is configured to selectively adjust the fuel pressure therein. The controller is configured to command the remotely-actuatable valve to adjust the pressure within the control chamber such that the piston moves from the default position to the flow equalizing position after ignition of the GTE.

US Patent:

8353306, Jan 15, 2013

Filed:

Aug 12, 2008

Appl. No.:

12/190312

Inventors:

Paul Futa - North Liberty IN, US
David Tuttle - South Bend IN, US
David Lawrence - South Bend IN, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

G05D 11/00
F02C 7/22
F02C 7/26
F02C 9/26

US Classification:

13711801, 13711806, 60790

Abstract:

A fuel divider system includes a housing assembly and a flow passage network having an inlet, a primary outlet, and a secondary outlet. A fuel divider piston is slidably disposed within the housing assembly and movable between a flow biasing position and a flow equalizing position. A control chamber is fluidly coupled to the flow passage network and fluidly communicates with the piston. An inlet chamber, at least partially defined by the piston and the housing assembly, is fluidly coupled to the inlet. At least one channel is provided through the piston and configured to cooperate with the flow passage network to port the FD control chamber to: (i) the fuel pressure at the secondary outlet when the FD piston is in the flow biasing position, and (ii) the fuel pressure within the inlet chamber when the FD piston is in the flow equalizing position.

US Patent:

20120199206, Aug 9, 2012

Filed:

Feb 7, 2011

Appl. No.:

13/022296

Inventors:

Paul Futa - North Liberty IN, US
David Tuttle - South Bend IN, US
William Scott Rowan - South Bend IN, US

Assignee:

HONEYWELL INTERNATIONAL INC. - Morristown NJ

International Classification:

G05D 7/00

US Classification:

137 1, 13711804

Abstract:

A direct metering fuel supply system includes a fuel pump, a burn flow fuel line, a servo flow fuel line, and a servo regulator. The fuel pump is adapted receive pump commands representative of a commanded fuel flow rate and is configured, in response to the pump commands, to discharge fuel at the commanded fuel flow rate. The burn flow fuel line is in fluid communication with the pump to receive a first portion of the fuel discharged therefrom. The servo flow fuel line is in fluid communication with the pump to receive a second portion of the fuel discharged therefrom. The servo regulator is mounted on the servo flow fuel line and configured to maintain fuel flow rate in the servo flow fuel line at a substantially constant fuel flow rate regardless of fuel flow rate in the burn flow fuel line.

US Patent:

20130327044, Dec 12, 2013

Filed:

Jun 6, 2012

Appl. No.:

13/490169

Inventors:

Larry Portolese - Granger IN, US
Gregory Kline - South Bend IN, US
Paul W. Futa - North Liberty IN, US
David Tuttle - South Bend IN, US
Brad McRoberts - Mishawaka IN, US
Greg Lafferty - Plymouth IN, US

Assignee:

Honeywell International Inc. - Morristown NJ

International Classification:

F02C 7/232
F16K 11/20
F02C 7/22

US Classification:

60734, 137637

Abstract:

A system provides “fail fixed” functionality and allows a user to manually manipulate fuel flow to a gas turbine engine in the unlikely event the primary control means is unavailable. The fuel metering unit includes a fuel metering valve, a flow increase valve, and a flow decrease valve. The flow increase valve and flow decrease valves are both in fluid communication with the fuel metering valve and are each adapted to selectively receive fuel flow commands from a primary fuel flow command source and from a secondary fuel flow command source. The flow increase and decrease valves are responsive to the fuel flow commands to selectively control the position of the fuel metering valve.

US Patent:

57751986, Jul 7, 1998

Filed:

Mar 7, 1997

Appl. No.:

8/813474

Inventors:

David J. Tuttle - South Bend IN
Edward J. Zielinski - South Bend IN

Assignee:

AlliedSignal Inc. - Morristown NJ

International Classification:

F15B 1110

US Classification:

91433

Abstract:

A control system (10) for a limited stall load actuator (60) comprises a servo pressure regulator (20), solenoid valve (40), relief valve (30) and a shuttle valve (50) connected with a piston actuator 60 such that when source pressure P1 is declining the servo pressure regulator (20) will open to permit more flow and maintain a minimum actuation force effected by the actuator (60), and should there occur a failure of the servo pressure regulator (20) that would permit high source pressure to be communicated to the control system (10), the relief valve (30) will operate to limit the amount of high pressure communicated to the control system (10) such that the actuator (60) will attain no greater than a predetermined maximum output force.

US Patent:

20180135529, May 17, 2018

Filed:

Nov 17, 2016

Appl. No.:

15/354340

Inventors:

- Morris Plains NJ, US
Paul W. Futa - North Liberty IN, US
Edward Zielinski - South Bend IN, US
David Tuttle - South Bend IN, US
Eric Arnett - Grabger IN, US

Assignee:

HONEYWELL INTERNATIONAL INC. - Morris Plains NJ

International Classification:

F02C 9/26
F02C 3/20
F02C 7/232
F02C 9/28

Abstract:

Embodiments of a combined overspeed and fuel stream selector system are provided. In an embodiment, the assembly includes a conduit network, a Discharge Select Valve (DSV), and a shutoff valve. The DSV is fluidly coupled to a primary fuel inlet, a secondary fuel inlet, and a primary fuel outlet included in the conduit network. The shutoff valve is fluidly coupled between the primary fuel inlet and the primary fuel outlet. In a standard operation mode, the shutoff valve is maintained in an open position, while fuel received at the primary fuel inlet is directed through the shutoff valve, through the DSV, and to the primary fuel inlet. Conversely, in a backup operation mode, the shutoff valve is closed to block fuel flow from the primary fuel inlet to the primary fuel outlet, while the DSV directs fuel flow received at the secondary fuel inlet to the primary fuel outlet.