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

Claim 0:
1. An apparatus for analyzing fuel supplied to a combustion engine during operation of the engine, the apparatus comprising:
a fuel flow measurement assembly for measuring respective indications of a temperature of fuel supplied to an engine and a density of fuel supplied to said engine; and
a control entity configured for deriving one or more parameters that are descriptive of observed fuel quality based at least on said temperature of the fuel and said density of the fuel, the control entity being configured to:
derive 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 the amount of heat released during combustion of a predefined amount of said fuel; and
derive the LHV as a net specific energy using a second-order function of the temperature-adjusted fuel density;

wherein the control entity is configured to carry out at least one of the following:
estimate a specific fuel consumption, SFOC value based at least in part on the LHV;
estimate quality of the fuel supplied to the engine based at least in part on the LHV;
adjust operation of the engine and/or adjust a fuel supply to the engine based at least in part on the LHV; and/or
display 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.