Method for an Exhaust Aftertreatment Control Equipped with a Lean NO_x Trap plus SCRF and Underfloor SCR Technology

摘要

Diesel engine passenger car regulations impose stringent nitrogen oxide (NOx) emission requirements. The automotive industry is proposing different aftertreatment solutions in order to meet the stringent emission standards, such as combining Lean NOx Trap (INT), selective catalyst reductant on filter (SCRF), and underfloor selective catalyst reductant (SCR). Each component is capable to ensure NOx conversion in particular driving conditions, and the regulations require to optimize aftertreatment system performance by coordinating different components in order to decrease overall emissions.