Todd A Haugsjaahabink

US Patent:

8408233, Apr 2, 2013

Filed:

Mar 18, 2011

Appl. No.:

13/051108

Inventors:

Charles E. Reuter - Granby CT, US
Aaron V. Price - Westfield MA, US
Todd Haugsjaahabink - Springfield MA, US
Yukinori Sato - Windsor Locks CT, US
John J. Wichowski - Westfield MA, US

Assignee:

Hamilton Sundstrand Corporation - Windsor Locks CT

International Classification:

G05D 11/02
E03B 5/00
F16K 31/12
F04B 23/04

US Classification:

13711523, 137563, 13756514, 13756533, 417288, 417428

Abstract:

A fuel flow system for a gas turbine engine includes a first pump, a second pump, a bypass loop, an integrating bypass valve and a pilot valve. The first pump connects to an actuator and a metering valve. The second pump connects to the metering valve and is arranged in parallel with the first pump. The bypass loop recycles fuel flow from the first pump and the second pump to inlets of the first pump and second pump integrating bypass valve includes first and second windows. The first window regulates fuel from the first pump through the bypass loop and the second window that regulates fuel from the second pump through the bypass loop. The pilot valve controls the size of the first and second windows.

US Patent:

20030136103, Jul 24, 2003

Filed:

Jan 22, 2002

Appl. No.:

10/054480

Inventors:

Charles Reuter - Granby CT, US
Gerald Dyer - Enfield CT, US
Todd Haugsjaahabink - Belchertown MA, US
Satish Shah - Rockford IL, US

International Classification:

F02C007/06
F02C007/22

US Classification:

060/039080, 060/734000

Abstract:

A fluid flow system for a gas turbine engine provides combustion fuel to a main pump and an actuator pump significantly reducing heat generation at low flow demand, while regulating actuator flow temperature at high flow demand. Fuel flow from the actuator pump in excess of the actuators needs is directed through an actuator minimum pressure valve and into a thermal bypass valve (TBV.) Depending upon the temperature of the fuel, the TBV determines the path of the excess actuator pump fluid flow. The TBV divides the fuel flow between being recirculated to the actuator pump inlet and the main pump output flow path to the engine fuel input conduit. The engine actuators are thereby assured of receiving flow which preclude freezing of water entrained in the fuel. When there is minimal concern with the possibility of freezing water entrained in the fuel, the TBV passes a greater percentage of fuel through to join together in the engine fuel input conduit.

US Patent:

20130276918, Oct 24, 2013

Filed:

Apr 24, 2012

Appl. No.:

13/454844

Inventors:

Todd Haugsjaahabink - Springfield MA, US

Assignee:

HAMILTON SUNDSTRAND CORPORATION - Windsor Locks CT

International Classification:

F16K 17/00

US Classification:

13751627

Abstract:

A fuel metering system includes a bypass valve configured to receive a fuel flow under a pressure P, a pressure regulating valve in fluid communication with the bypass valve and configured to receive a fuel flow under a pressure P, a metering valve in fluid communication with the bypass valve and the pressure regulating valve, and configured to receive the fuel flow under the pressure Pand to output a fuel flow under a pressure P, a single stage servo valve in fluid communication with the bypass valve, the pressure regulating valve and the metering valve, and configured to receive the fuel flow under the pressure P, and to output the fuel flow under the pressure P, and to output a fuel flow under a pressure P, and a linear variable differential transformer coupled to the metering valve.

US Patent:

20140069102, Mar 13, 2014

Filed:

Sep 12, 2012

Appl. No.:

13/610987

Inventors:

Montira Satienpoch - Enfield CT, US
Todd Haugsjaahabink - Springfield MA, US

International Classification:

F02C 7/232
F16K 11/074

US Classification:

60734, 13762546

Abstract:

A metering valve for a gas turbine engine fuel system includes a sleeve including first, second, third, fourth, fifth and sixth ports respectively axially spaced apart from one another. A spool is slidably received in the sleeve and includes first, second and third seal lands. The first seal land selectively connects the first and second ports to one another, and the third seal land selectively connects the third and fourth ports to one another and the fifth and sixth ports to one another.

US Patent:

20220372941, Nov 24, 2022

Filed:

May 18, 2021

Appl. No.:

17/324009

Inventors:

- Charlotte NC, US
Morgan O'Rorke - West Hartford CT, US
Matej Rutar - Manchester CT, US
Todd Haugsjaahabink - Springfield MA, US
Weishun William Ni - Rockton IL, US
Benjamin T. Harder - Sycamore IL, US
Ryan Shook - Rockford IL, US

International Classification:

F02M 37/04
F15B 13/04
F15B 5/00

Abstract:

A fuel metering system includes a pump with an inlet and an outlet, a first flow path including a first valve fluidically connected to the outlet of the pump, and a second flow path including a second valve fluidically connected to the outlet of the pump, a third valve, and a fourth valve. An electrohydraulic servo valve in a first position hydraulically connects the inlet of the pump to the first, third, and fourth valves to close the first valve, open the third valve, open a first window of the fourth valve, and close a second window of the fourth valve. The electrohydraulic servo valve in a second position hydraulically connects the outlet of the pump to the first, third, and fourth valves to open the first valve, close the third valve, close the first window of the fourth valve, and open the second window of the fourth valve.

US Patent:

20220372967, Nov 24, 2022

Filed:

May 18, 2021

Appl. No.:

17/324017

Inventors:

- Charlotte NC, US
Morgan O'Rorke - West Hartford CT, US
Matej Rutar - Manchester CT, US
Todd Haugsjaahabink - Springfield MA, US

International Classification:

F04B 49/16
F04B 49/22
F04B 23/04
F04B 17/03
F04B 53/14
F04B 1/146
F04B 51/00
F04B 1/29

Abstract:

A pumping system includes a first variable displacement pump having a first inlet and a first outlet. The first outlet is fluidically connected to a system outlet. A first actuator is mechanically coupled to a first displacement mechanism of the first variable displacement pump A second variable displacement pump includes a second inlet and a second outlet. The second outlet is fluidically connected to the system outlet. The pumping system also includes a second actuator mechanically coupled to a second displacement mechanism of the second variable displacement pump. An electrohydraulic servo valve is hydraulically connected to the first and second actuators. An electronic engine controller is in communication with the electrohydraulic servo valve and is configured to send electrical current to the electrohydraulic servo valve to drive the first actuator and the second actuator.

US Patent:

20220372968, Nov 24, 2022

Filed:

May 18, 2021

Appl. No.:

17/324014

Inventors:

- Charlotte NC, US
Ryan Susca - Windsor CT, US
Matej Rutar - Manchester CT, US
Todd Haugsjaahabink - Springfield MA, US

International Classification:

F04B 49/22
F04B 1/295
F04B 1/146
F04B 13/00
F04B 49/06

Abstract:

A metering pump system includes a variable displacement pump having an inlet and an outlet, a flow sensing valve fluidically connected to the outlet of the variable displacement pump, and an actuator mechanically coupled to a displacement mechanism of the variable displacement pump. The metering pump system also includes an electronic engine controller in communication with the flow sensing valve. An electrohydraulic servo valve is electrically connected to the electronic engine controller and hydraulically connected to the actuator. The electrohydraulic servo valve is configured to hydraulically drive the actuator to move the displacement mechanism to change displacement of the variable displacement pump.

US Patent:

20230111165, Apr 13, 2023

Filed:

Oct 13, 2021

Appl. No.:

17/450800

Inventors:

- Charlotte NC, US
Morgan O'Rorke - West Hartford CT, US
Todd Haugsjaahabink - Springfield MA, US

International Classification:

F15B 13/04
F15B 13/044
F15B 13/043
F16K 11/07

Abstract:

A method of controlling an actuator includes switching a primary solenoid valve to a first mode to fluidically connect a supply pressure source to a control chamber of a pilot valve. A fluid from the supply pressure source is directed through the primary solenoid valve to fill the control chamber of the pilot valve and put the pilot valve in a first position. The first position fluidically connects a second chamber of the actuator to a return pressure source. The actuator includes a cylinder between the first chamber and the second chamber and a rod attached to the cylinder. The fluid from the supply pressure source is directed into the first chamber of the actuator to move the cylinder and the rod in a first direction while the pilot valve is in the first position.