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

Claim 3:
4. 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 when a health of both the heat engine and the electric motor are within normal operating limits, the one or more output signals of the HEP controller include a maintenance system indicator activation signal to indicate that maintenance is needed to assess a health of the combining gear box or accessory drives.