What does the torque meter assembly indicate on a naval engine?

What does the torque meter assembly indicate on a naval engine?

• A. Fuel pressure
• B. Exhaust temperature
• C. Torsional deflection
• D. RPM

Answer: (C)

Torque in a naval propulsion system twists the drive shaft as torque is transmitted from the engine to the propeller. The torque meter assembly is built to read that twist, i.e., the torsional deflection between two points along the shaft or through a torsion element. By sensing how much the shaft twists under load, it provides a reading that reflects the torque being transmitted. This is distinct from fuel pressure, exhaust temperature, or RPM, which are measured to monitor fuel supply, exhaust conditions, and engine speed, respectively. The torque meter’s purpose is to monitor shaft torsion to detect overload, misalignment, or changes in propulsive load, helping protect the drive train from fatigue or failure.

Torque in a naval propulsion system twists the drive shaft as torque is transmitted from the engine to the propeller. The torque meter assembly is built to read that twist, i.e., the torsional deflection between two points along the shaft or through a torsion element. By sensing how much the shaft twists under load, it provides a reading that reflects the torque being transmitted. This is distinct from fuel pressure, exhaust temperature, or RPM, which are measured to monitor fuel supply, exhaust conditions, and engine speed, respectively. The torque meter’s purpose is to monitor shaft torsion to detect overload, misalignment, or changes in propulsive load, helping protect the drive train from fatigue or failure.