Back to results
US 4,360,336 AGranted
Combustion control system
AssigneeEconics Corporation
InventorStanley H. Shepherd
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeEconics Corporation
InventorStanley H. Shepherd
Estimating the term…
A combustion control system which utilizes non-linear parameters for controlling a combustion process with greater efficiency than has heretofore been available is disclosed. According to the method, the quantity of carbon monoxide, unburned hydrocarbons, and/or opacity is measured and compared with a predetermined value for that parameter. Error signals for each parameter are generated and supplied to an error selector which chooses the error signal of the largest magnitude. The error signal is then compensated for the non-linear relationship between the parameter and the amount of excess air supplied to the combustion process. Other operations, including checking the proposed control signal output against one or more constraints are performed, and if satisfactory, an output signal is supplied to a servo-mechanism for controlling the air flow to the combustion process.
A method of controlling a combustion process producing exhaust gases and having a non-linear relationship between each of carbon monoxide, unburned hydrocarbons, and opacity with respect to air supplied, the method comprising:
A method of controlling a combustion process producing exhaust gases, the combustion process having a non-linear relationship between air/fuel ratio and each of carbon monoxide, opacity and unburned hydrocarbons, the method comprising:
Apparatus for controlling a combustion process in which fuel and air are mixed in a ratio and burned producing exhaust gases, the apparatus comprising:
Dependencies are inferred from the claim text.