Method for operating an exhaust gas system, method for operating a motor vehicle and motor vehicle
AssigneeEMITEC Gesellschaft fuer Emissionstechnologie mbH
InventorsCARSTEN KRUSE, THOMAS NAGEL, RICHARD DORENKAMP, GERHARD KAHMANN, THORSTEN DUESTERDIEK
Life of this patent
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Abstract
A method for operating an exhaust gas system of an internal combustion engine having at least one heater and a catalytic converter for converting hydrocarbons, includes operating the heater in such a way that it is adapted to the aging state of the catalytic converter. A method for operating a motor vehicle and a motor vehicle are also provided.
Claims9
A method for operating an exhaust system of an internal combustion engine, the method comprising the following steps:
- providing at least one heater;
- providing a catalytic converter for the conversion of hydrocarbons;
- and
- adapting operation of the at least one heater as a function of an aging state of the catalytic converter.
A method for operating a motor vehicle, the method comprising the following steps:
- providing the motor vehicle with an internal combustion engine and an exhaust system having at least one heater and a catalytic converter for the conversion of hydrocarbons;
- adapting operation of the at least one heater as a function of an aging state of the catalytic converter by determining a hydrocarbon conversion temperature of the catalytic converter, comparing the hydrocarbon conversion temperature with a predefined threshold temperature and operating the at least one heater if the hydrocarbon conversion temperature is lower than the predefined threshold temperature;
- and
- adapting the operation of the at least one heater not in a first operating phase of the motor vehicle but only when the predefined threshold temperature reaches a particular value.
A method for operating a motor vehicle, the method comprising the following steps:
- providing the motor vehicle with an internal combustion engine and an exhaust system having at least one heater with heating segments and a catalytic converter for the conversion of hydrocarbons;
- adapting operation of the at least one heater as a function of an aging state of the catalytic converter by adapting a heating power of the at least one heater by operating a different number of the heating segments;
- and
- adapting the operation of the at least one heater not in a first operating phase of a motor vehicle but only when a predefined threshold temperature reaches a particular value.
A method for operating a motor vehicle, the method comprising the following steps:
- providing the motor vehicle with an internal combustion engine and an exhaust system having at least one heater and a catalytic converter for the conversion of hydrocarbons;
- adapting operation of the at least one heater as a function of an aging state of the catalytic converter by adapting a heating power of the at least one heater by implementing a different activation duration of the at least one heater;
- and
- adapting the operation of the at least one heater not in a first operating phase of a motor vehicle but only when a predefined threshold temperature reaches a particular value.
A motor vehicle, comprising:
- an internal combustion engine;
- an exhaust system connected to said internal combustion engine, said exhaust system having at least one heater and a catalytic converter disposed downstream of said at least one heater for converting hydrocarbons;
- and
- a controller configured to adapt operation of said at least one heater as a function of an aging state of said catalytic converter.
Dependencies are inferred from the claim text.