High fuel consumption can be caused by a variety of factors such as equipment issues (engines, propellers), low-quality fuel, and bad weather. To identify the root cause of key inefficiencies, Torquemet torque meters measure and monitor key performance indicators from torque and power transferred from the main engines to the propellers such as Torque (Nm or kNm), Speed (rpm), Power (kW), Energy (kWh or Joules) SFOC (g/kWh), and Kw per mile.
Torquemet measures the torque on a rotating system. The torque meter installed is fitted with either an optical sensor or a strain gauge to measure the rotary and reaction torque on the shaft. The torque meter is also equipped with a tachometer to measure shaft speed. The shaft torque and shaft speed data are used to measure the power transferred from the engines to the propellers.
The data output from the torque meter is logged on the data acquisition system to allow data integration with different ship systems. By combining this data with the fuel consumption monitoring system, further useful information, such as understanding the engine efficiency is generated.