A virtual fuel consumption sensor system

A computer implemented method for monitoring an output of a physical fuel consumption sensor system configured to monitor a fuel consumption of a driveline (110) in a marine vessel (100), the method comprises

• generating a library (210) of fuel consumption models (220, 221, 222), where each fuel consumption model in the library of models is configured to predict fuel consumption of a driveline having a respective specification, where each fuel consumption model in the library of models is configured to operate based on a respective set of sensor input signals (115, 165),
• selecting one or more fuel consumption models from the library (210) based on a specification of the driveline (110) in the marine vessel (100) and on the available sensor input signals of the marine vessel (100),
• obtaining real-time physical sensor input signal data related to the driveline (110) in the marine vessel (100),
• determining the fuel consumption of the driveline (110) in the marine vessel (100) based on the selected one or more fuel consumption models from the library (210) and on the obtained real-time physical sensor input signal data related to the driveline (110) in the marine vessel (100), and monitoring an output of the physical fuel consumption sensor system by comparing its output to the fuel consumption of the driveline determined based on the selected one or more fuel consumption models from the library (210) and on the obtained real-time physical sensor input signal data related to the driveline (110) in the marine vessel (100).