SUB-IDLE HYBRID OPERATION MODE FOR HYBRID ELECTRIC PROPULSION SYSTEM
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United States of America Patent
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Issued Date -
Aug 15, 2024
app pub date -
Feb 14, 2024
filing date -
Feb 14, 2023
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Abstract
A method of operating a hybrid engine for an aircraft, the hybrid engine having a thermal engine and an electric motor. The method includes verifying, using an engine control unit of the hybrid engine, that a selected power level is under a predetermined threshold for operation of the hybrid engine in a sub-idle hybrid mode. The method further includes operating the hybrid engine in the sub-idle hybrid mode, using the engine control unit, by controlling the thermal engine to operate in a standby mode, and by controlling the electric motor to operate in an active mode wherein the electric motor provides a majority of a propulsive power to the aircraft, wherein in the standby mode the thermal engine operates in a sub-idle condition to provide at most minimal propulsive power to the aircraft.
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