Real-time control of reductant droplet spray momentum and in-exhaust spray distribution

A system comprising:

• a reductant injection system for injecting reductant into an exhaust gas based on an injection parameter or a supply parameter;
• and
• a controller configured to:
• access a current vehicle condition parameter,
• determine one or more control parameters based on a control model and as a function of the accessed current vehicle condition parameter, and
• modify a value of the injection parameter or the supply parameter based on the one or more control parameters to control a reductant spray momentum, a reductant droplet momentum, or a reductant momentum vector from the reductant injection system so as to provide a target spray droplet distribution or a target spray distribution.

A method comprising:

• accessing a current engine condition parameter;
• determining one or more control parameters based on a control model and as a function of the accessed current engine condition parameter;
• modifying a value of an injection parameter or a supply parameter based on the one or more control parameters to control a reductant spray momentum, a reductant droplet momentum, or a reductant momentum vector from a reductant injection system so as to provide a target spray droplet distribution or a target spray distribution;
• and
• commanding the reductant injection system to inject reductant into an exhaust gas based on the injection parameter or a reductant supply system to supply reductant to the reductant injection system based on the supply parameter.