Control systems and methods for exhaust pollution mitigation

A method of controlling a heater assembly of an exhaust system that is configured to vaporize a dosing solution, the method comprising:

• receiving, at a controller, from one or more sensors, sensor data comprising (i) temperature data indicative of a temperature of the heater assembly and (ii) pollutant content data indicative of a pollutant content of an exhaust gas in an exhaust gas flow path of the exhaust system;
• determining, by the controller, based on both the temperature data and the pollutant content data, a heater adjustment value for adjusting operation of the heater assembly;
• determining, by the controller, based on both the temperature data and the pollutant content data, an injector adjustment value for adjusting operation of a dosing solution injector;
• transmitting a first control signal corresponding to the heater adjustment value to adjust the operation of the heater assembly to achieve a temperature indicated by the heater adjustment value;
• and
• transmitting a second control signal corresponding to the injector adjustment value to adjust the operation of the dosing solution injector to achieve a pressure of the dosing solution in the heater assembly indicated by the injector adjustment value.

An assembly for controlling an exhaust system including an exhaust gas flow path for exhaust gas, the assembly comprising:

• a heater assembly configured to vaporize a dosing solution provided by a dosing solution tank;
• a dosing solution injector configured to inject the dosing solution;
• one or more sensors configured to generate sensor data comprising (i) temperature data indicative of a temperature of the heater assembly and (ii) pollutant content data indicative of a pollutant content of the exhaust gas;
• and
• a controller communicatively coupled to the heater assembly, the dosing solution injector, and the one or more sensors, the controller comprising a processor configured to:
• receive the sensor data from the one or more sensors;
• determine, based on both the temperature data and the pollutant content data, a heater adjustment value for adjusting operation of the heater assembly;
• determine, based on both the temperature data and the pollutant content data, an injector adjustment value for adjusting operation of the dosing solution injector;
• transmit a first control signal corresponding to the heater adjustment value to adjust the operation of the heater assembly to achieve a temperature indicated by the heater adjustment value;
• and
• transmit a second control signal corresponding to the injector adjustment value to adjust the operation of the dosing solution injector to achieve a pressure of the dosing solution in the heater assembly indicated by the injector adjustment value.

A method of controlling an exhaust system including a heater assembly configured to heat a dosing solution, and an exhaust gas flow path for exhaust gas, the method comprising:

• receiving, at a controller, from one or more sensors, sensor data comprising (i) temperature data indicative of a temperature of the heater assembly and (ii) pollutant content data indicative of a pollutant content of the exhaust gas in the exhaust gas flow path, the method further comprising one or both of:
• (A-1) determining, by the controller, based on both the temperature data and the pollutant content data, a heater adjustment value for adjusting operation of the heater assembly,
• (A-2) transmitting a first control signal corresponding to the heater adjustment value to adjust the operation of the heater assembly, and
• (A-3) adjusting, based on the first control signal, the operation of the heater assembly to achieve a temperature indicated by the heater adjustment value;
• or
• the method further comprising:
• (B-1) determining, by the controller, based on both the temperature data and the pollutant content data, an injector adjustment value for adjusting operation of a dosing solution injector fluidly connected to the heater assembly,
• (B-2) transmitting a second control signal corresponding to the injector adjustment value to adjust the operation of the dosing solution injector, and
• (B-3) adjusting, based on the second control signal, the operation of the dosing solution injector to adjust an amount of the dosing solution injected into the exhaust gas by the dosing solution injector.