Patent ID: 11884412
Assignee: PRATT & WHITNEY CANADA CORP.
Field: Transport (Mechanical engineering)
Classification: CPC B  Y | IPC B

Claim 4:
5. The system of claim 1, wherein the HEP controller is configured such that when a first torque signal from the heat engine torque sensor or a second torque signal from the electric motor torque sensor indicate that a commanded torque is being provided by both the heat engine and the electric motor, but a third torque signal from the combining gear box torque sensor indicates that total torque output is less than a commanded total torque, and if when a health of either of the heat engine or the electric motor are unknown or outside a normal operating limit, the one or more output signals of the HEP controller include a warning indicator activation signal to activate a crew alert system indicator to warn of a failure leading to a potential shutdown.