Techniques for enhancing aftertreatment regeneration capability

A method, comprising:

• determining a desired inlet exhaust gas temperature for an aftertreatment component;
• determining whether a current inlet temperature of the aftertreatment component is lower than the desired inlet exhaust gas temperature, and whether the desired inlet exhaust gas temperature is achievable;
• in response to the current inlet temperature being lower than the desired inlet exhaust gas temperature and the desired inlet exhaust gas temperature being achievable, determining an exhaust pressure command and a fuel injection command;
• and
• operating an exhaust gas pressure device in response to the exhaust pressure command, and operating a fuel system for an internal combustion engine in response to the fuel injection command.

A method, comprising:

• determining a desired inlet exhaust gas temperature for an aftertreatment component;
• determining whether a current inlet temperature of the aftertreatment component is lower than the desired inlet exhaust gas temperature;
• performing, in order:
• post-injection fueling in an internal combustion engine in response to the current inlet temperature of the aftertreatment component being lower than the desired inlet exhaust gas temperature;
• and
• adding exhaust pressure increase to the post-injection fueling in response to the current inlet temperature of the aftertreatment component remaining lower than the desired inlet exhaust gas temperature.