DEF DELIVERY MODELING FOR SCR SYSTEMS

Researchers characterize a 0-D model of a urea delivery module, oriented to model-based control and to the simulation of the system response to fault injections, finalized to diagnosis validation.

The progressive tightening of the limits defined by antipollution regulations in many countries has led the industry to develop control and pollutants abatement technologies of increasing sophistication and effectiveness.

To achieve more stringent emissions limits in a diesel engine, it is no longer sufficient to implement control actions within the combustion chamber, such as multiple injections, exhaust gas recirculation (EGR), fluid dynamics optimization, turbocharging, etc., but it has become necessary to adopt exhaust emissions aftertreatment systems.