Patent ID: 11885276
Assignee: WÄRTSILÄ FINLAND OY
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 12:
13. A method for analysis of fuel supplied to a combustion engine during operation of the engine, the method comprising:
obtaining respective indications of a temperature of the fuel supplied to said engine and a density of the fuel supplied to said engine;
deriving a temperature-adjusted fuel density based on the indicated density of fuel in dependence of relationship between the indicated temperature of the fuel and a predefined reference temperature that is applicable for deriving a lower heating value, LHV, that is descriptive of an amount of heat released during combustion of a predefined amount of said fuel; and
deriving the LHV as a net specific energy using a second-order function of the temperature-adjusted fuel density;
estimating a specific fuel oil consumption, SFOC value based at least in part on the LHV;
estimating quality of the fuel supplied to the engine based at least in part on the LHV;
adjusting operation of the engine and/or adjusting the fuel supply to the engine based at least in part on the LHV; and/or
displaying an indication of the derived LHV via a user interface coupled to the control entity to enable adjusting operation of the engine and/or adjusting the fuel supply to the engine based at least in part on the LHV.