Lubrication system for gas turbine engines

A gas turbine engine comprising:

• a fan and a combustor,
• and
• a lubrication system, the lubrication system comprising:
• a lubrication tank;
• a main conduit in fluid communication with the lubrication tank;
• a main pump, a flow scheduling valve, and the main conduit fluidly connecting the main pump and the flow scheduling valve, the main pump moving a lubricant through the main conduit from the lubricant tank to the a flow scheduling valve,
• a first engine component fluidly connected by a first primary conduit to the flow scheduling valve, a second engine component fluidly connected by a second primary conduit to the flow scheduling valve;
• and
• a processor connected to the flow scheduling valve and at least one sensor that provides at least one measured value, the processor configured to;
• receive the at least one measured value from the at least one sensor,
• calculate an engine load based on the at least one measured value,
• selectively control the flow scheduling valve to proportionally reduce flow of the lubricant to both the first engine component and the second engine component in response to detecting a reduced value of the calculated engine load, and
• wherein the at least one sensor includes one or both of a pressure sensor providing a measured pressure of the combustor and a speed sensor providing a measured speed of the fan, and wherein the at least one measured value includes the corresponding one or both of measured pressure and measured speed.

A method of lubricating a first component and a second component of a gas turbine engine, the gas turbine engine having a fan and a combustor, comprising:

• moving a lubricant through a main conduit from a lubricant tank to a flow scheduling valve by a main pump, the main conduit fluidly connecting the main pump and the flow scheduling valve,
• fluidly connecting the first component to the flow scheduling valve with a first primary conduit,
• fluidly connecting the second component to the flow scheduling valve with a second primary conduit,
• moving the lubricant to the flow scheduling valve with the main pump, and
• providing at least one measured value from at least one sensor to a processor, the processor connected to the flow scheduling valve and the at least one sensor,
• calculating an engine load with the processor based on the at least one measured value,
• regulating the main pump with the processor to selectively control the moving of the lubricant through the main conduit from the lubricant tank to the flow scheduling valve according to an operational speed of the gas turbine engine,
• selectively controlling the flow scheduling valve with the processor to proportionally reduce flow of the lubricant to both the fires component and the second component in response to detecting a reduced value of the calculated engine load with the processor, and
• wherein the at least one sensor includes one or both of a pressure sensor providing a measured pressure of the combustor and a speed sensor providing a measured speed of the fan, and wherein the at least one measured value includes the corresponding one or both of measured pressure and measured speed.