Hamilton Sundstrand Corporation

United Technologies Corporation

Sundstrand Corporation

David Lloyd Ripley

Behzad Hagshenas

Michael E Mehrer

Kenneth W Winston

Andre M Ajami

Dennis E Schmidt

Taylor Fausett

Jeremy J Walters

Lawrence A Cogsdill

Mike Sledd

A filter includes an outlet from a container, the outlet transverse to said inlet and a filter screen within the container that partially surrounds the outlet. In a further embodiment of the foregoing embodiment, the filter screen prevents passage of particles greater in size than 40 to 6000 microns. In a further embodiment of any of the foregoing embodiments, the filter screen provides a pressure drop of less than 0.5 psi. In a further embodiment of any of the foregoing embodiments, the filter screen defines a tortuous path with a bypass there around. In a further embodiment of any of the foregoing embodiments, the filter screen is cylindrical and extends parallel to a length of said container.

Fuel system ice and debris separator (IDS) with partial filter screen and torturous path

The present disclosure relates generally to system and method for detecting fuel shutoff valve failures in a system including multiple fuel shutoff valves connected in series. By commanding different fuel shutoff valves to close and detecting changes in the system operating conditions, the system and method may determine if any of the fuel shutoff valves are not working properly.

System and method to detect shutoff valve failures

A gas turbine engine assembly is provided having a gas turbine engine and a fuel supply in flow communication with the gas turbine engine. An accumulator is positioned in flow communication between the fuel supply and the gas turbine engine to store fuel pressure in fuel flowing from the fuel supply to the gas turbine engine.

Accumulator assisted gas turbine engine start system and methods therefor

An example method of fuel delivery to a turbomachine includes reaching a light-off speed of a turbomachine and delivering fuel to a combustor of the turbomachine at a first rate. The method also increases the rate of the delivery. The combustor achieves light-off at a fuel flow rate on or in-between the first rate and a second rate that is greater than the first rate. An example turbomachine fuel delivery assembly includes a fuel delivery component and a controller configured to adjust the fuel pump to increase a rate of fuel delivery from a fuel supply to a combustor of a turbomachine.

Turbomachine fuel delivery method and assembly

A fuel system for an auxiliary power unit includes a mechanical fuel pump, an electric fuel pump, and a controller. The mechanical fuel pump provides fuel flow to the auxiliary power unit and has an output dependent upon an operational speed of the auxiliary power unit. The electric fuel pump provides fuel flow to the auxiliary power unit, and is located in flow series with the mechanical fuel pump. The controller causes the electric fuel pump to provide fuel flow during starting of the auxiliary power unit.

Fuel system for starting an APU using a hybrid pump arrangement

A fuel system for an auxiliary power unit includes a mechanical fuel pump, an electric fuel pump, and a controller. The mechanical fuel pump provides fuel flow to the auxiliary power unit and has an output dependent upon an operational speed of the auxiliary power unit. The electric fuel pump is located in flow series with the mechanical fuel pump. The controller causes the electric fuel pump to circulate and thereby warm fuel prior to start up of the auxiliary power unit.

Fuel preheating using electric pump

An adapter for retrofitting a fuel control system. The adapter has an outlet port and an inlet port for connecting to an external fuel system. The adapter replaces a standard fuel filter and fuel filter bowl.

Fuel filter adapter

A start system for a gas turbine engine delivers starter current according to a schedule selected according to measured rotational speed and oil temperature of the gas turbine engine.

Torque control for starting system

A valve (,B) is provided is provided for regulating the pressure differential between a high pressure side (,) and a low pressure side (,) of a fluid system component (,). The valve (,B) utilizes a damping washer (,) to restrict the flow of fluid from a valve bore (,) in response to translation of a valve spool (,) in the valve bore (,). The damping washer (,) includes an aperture (,) that is piloted on a valve stem (,) extending from the valve spool (,). The damping washing (,) is biased against an open end (,) of the valve bore (,) by a spring (,) engaged between the damping washer (,) and a spring seat (,) that is engaged with the valve stem (,). A separate spring (,) is provided to bias the valve spool (,) against the high pressure fluid acting on the valve spool (,).

Pressure regulating valve with integral damping

The presence of a lubricant in compressed gas from a reciprocating compressor including at least one cylinder 76 reciprocally receiving a piston 74 mounted on a rod 60 and connected to a rotary shaft 12 by a rotary to reciprocating motion converting mechanism 44 is avoided by placing a bellows 130 between the cylinder 76 and various components, including a piston rod guide 64, requiring lubrication.

Growing community of inventors

San Diego, CA, United States of America

David Lloyd Ripley