FMU MOUNTED EEC FOR SMALL AIRCRAFT ENGINE APPLICATIONS
First Claim
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1. A fuel metering unit (FMU) for an aircraft engine, the FMU comprising:
- an effector; and
an electronic engine controller (EEC);
wherein the effector is electrically connected to the EEC to adjust one of a rate of fuel flowing into the engine, a stator vane position, and a rate of bleed air flowing from an engine compressor in response to a control signal sent from the EEC; and
the control signal sent from the EEC is responsive to an engine sensor signal and to airframe sensor information.
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Abstract
A fuel metering unit (FMU) for an aircraft engine includes an effector and an electronic engine controller (EEC). The effector is electrically connected to the EEC to adjust a rate of fuel flowing into the engine. The adjustment is in response to a control signal sent from the EEC. The control signal sent from the EEC is responsive to an engine sensor signal and to airframe sensor information.
16 Citations
20 Claims
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1. A fuel metering unit (FMU) for an aircraft engine, the FMU comprising:
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an effector; and an electronic engine controller (EEC); wherein the effector is electrically connected to the EEC to adjust one of a rate of fuel flowing into the engine, a stator vane position, and a rate of bleed air flowing from an engine compressor in response to a control signal sent from the EEC; and
the control signal sent from the EEC is responsive to an engine sensor signal and to airframe sensor information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A full authority digital engine controller (FADEC) for controlling an engine attached to an airframe, the FADEC comprising:
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an electronic engine controller (EEC); and an analog-to-digital circuit connected to a plurality of airframe sensors to convert airframe sensor signals to airframe sensor digital data; wherein at least a portion of the FADEC is housed within a fuel metering unit (FMU) attached to the engine. - View Dependent Claims (9, 10, 11)
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12. A system for controlling an aircraft engine attached to an airframe, the system comprising:
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a plurality of airframe sensors attached to the airframe to produce airframe sensor signals; an airframe data concentrator (ADC) attached to the airframe and electrically connected to the plurality of airframe sensors to convert the airframe sensor signals to airframe sensor digital data; a fuel metering unit (FMU) attached to the engine, the FMU comprising; an effector; and an electronic engine controller (EEC); an engine sensor; a digital bus connecting the ADC to the EEC; wherein the engine sensor is electrically connected to the EEC to provide an engine sensor signal to the EEC;
the effector is electrically connected to the EEC to adjust one of a rate of fuel flowing into the engine, a stator vane position, and a rate of bleed air flowing from an engine compressor in response to a control signal sent from the EEC; and
the control signal sent from the EEC is responsive to the airframe sensor digital data sent by the ADC over the digital bus and the engine sensor signal. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A method of controlling an aircraft engine attached to an airframe, the method comprising:
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receiving airframe sensor signals from airframe sensors at an airframe data concentrator (ADC) attached to the airframe; converting the received airframe sensor signals into airframe sensor digital data within the ADC; transmitting the airframe sensor digital data from the ADC over a digital bus to an electronic engine control (EEC) contained within a fuel metering unit (FMU); receiving an engine sensor signal from an engine sensor at the EEC; generating a control signal within the EEC, wherein the generated control signal is responsive to the received airframe sensor digital data and the received engine sensor signal; transmitting the generated control signal to an effector contained within the FMU; and adjusting the effector in response to the transmitted control signal to control one of a rate of fuel flowing into the engine, a stator vane position, and a rate of bleed air flowing from an engine compressor. - View Dependent Claims (20)
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Specification