Oxidation catalyst burn threshold adjustment to avoid quenching

A method of controlling an exhaust gas treatment system of a vehicle having an engine, the method comprising:

• tracking a usage of an oxidation catalyst;
• relating the tracked usage of the oxidation catalyst to a temperature offset value;
• adjusting a current burn threshold temperature by the temperature offset value to define an adjusted burn threshold temperature;
• detecting a request to regenerate the oxidation catalyst;
• sensing a temperature of the flow of exhaust gas to determine if the temperature of the flow of exhaust gas is equal to or greater than the adjusted burn threshold temperature;
• injecting hydrocarbons into a flow of exhaust gas when a temperature of the oxidation catalyst is equal to or greater than the adjusted burn threshold temperature to regenerate the oxidation catalyst;
• identifying when the temperature of the oxidation catalyst drops below the adjusted burn threshold temperature to detect when the oxidation catalyst is quenched;
• stopping the injection of hydrocarbons into the flow of the exhaust gas when the oxidation catalyst is quenched;
• comparing the adjusted burn threshold temperature to a maximum burn threshold temperature to determine if the adjusted burn threshold temperature is less than or equal to the maximum burn threshold temperature;
• tracking a number of occurrences the oxidation catalyst is determined to be quenched at the adjusted burn threshold temperature;
• and
• permanently increasing the adjusted burn threshold temperature when the number of occurrences is greater than a pre-defined limit and the adjusted burn threshold temperature is less than the maximum burn threshold temperature.