Patent ID: 11859568
Assignee: ECONTROLS, LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 1:
2. The system described in claim 1, wherein said system further comprises a throttle system for determining one or more fuel properties during operation of the internal combustion engine, said throttle system comprising:
a) a mass-flow-gas (MFG) throttle configured to receive and quantify a quantity of gaseous fuel;
b) a mass-flow-air (MFA) throttle positioned downstream of the MFG throttle, the MFA throttle being configured to receive and quantify a quantity of air, wherein one of the MFA throttle or the MFG throttle is the mass-flow throttle;
c) an oxygen sensor positioned in an exhaust manifold associated with the internal combustion engine, the exhaust manifold positioned downstream of the MFG throttle and the MFA throttle, the oxygen sensor being configured to sense an oxygen content in the gaseous fuel;
d) a controller associated with the internal combustion engine, the controller being configured to receive data signals relating to the mass flow of gas, the mass flow of air, and the oxygen content in the fuel, the controller being adapted to determine an air-fuel ratio based on the sensed quantity of oxygen in the gaseous fuel;
e) a controlling interface configured to allow an operator to manipulate system settings;
f) wherein one or more fuel properties are inferred based on the mass flow of gas, the mass flow of air, and the air-fuel ratio; and
g) wherein the controller is further adapted to adjust an operating condition of the internal combustion engine based on the one or more fuel properties inferred.