Method for estimating an exhaust gas temperature
AssigneeGM Global Technology Operations LLC
InventorsFederico Luigi Guglielmone, Luca Giuseppe Pairolero
Life of this patent
Estimating the term…
Abstract
A Method is provided for estimating a temperature of an exhaust gas in an exhaust line of an internal combustion engine. The exhaust line is provided with a NOx sensor that includes, but is not limited to a heater. The method includes, but is not limited to determining a value of a parameter indicative of a heat released by the heater of the NOx sensor, and of calculating a value of the temperature of the exhaust gas as a function of the determined value of this parameter.
Claims18
A method for estimating a temperature of an exhaust gas in an exhaust line of an internal combustion engine, the exhaust line comprising a NOx sensor that comprises an heater, the method comprising:
- determining a value of a parameter indicative of an heat released by the heater of the NOx sensor;
- and
- calculating a value of the temperature of the exhaust gas as a function of the value of the parameter.
A computer readable medium embodying a computer program product, said computer program product comprising:
- an estimation program for estimating a temperature of an exhaust gas in an exhaust line of an internal combustion engine, the exhaust line comprising a NOx sensor that comprises a heater program, the estimation program configured to:
- determine a value of a parameter indicative of an heat released by a heater of the NOx sensor;
- and
- calculate a value of the temperature of the exhaust gas as a function of the value of the parameter.
An estimating apparatus for an internal combustion engine, comprising:
- an exhaust line;
- a NOx sensor;
- a heater for the NOx sensor;
- and
- a controller configured to:
- determine a value of a parameter that is indicative of heat released by the heater of the NOx sensor, and
- calculate a value of the temperature of an exhaust gas in the exhaust line as a function of the value of the parameter.
Dependencies are inferred from the claim text.