Aftertreatment Mastermind
Module 1

Aftertreatment System Fundamentals

Why modern diesels need aftertreatment & how every component fits

Build the mental model of the complete exhaust path — engine-out emissions through tailpipe — and understand what every component does and why the controller cares.

  1. 1.Why Modern Diesels Need Aftertreatment
  2. 2.Emissions Fundamentals: NOx, PM, CO, HC
  3. 3.The Complete Exhaust Flow Path
  4. 4.DOC — Diesel Oxidation Catalyst
  5. 5.DPF — Diesel Particulate Filter
  6. 6.SCR — Selective Catalytic Reduction
  7. 7.ASC — Ammonia Slip Catalyst
  8. 8.DEF & the Dosing System
  9. 9.Sensors: NOx, Temperature, Differential Pressure
  10. 10.How the Components Interact as a System
Module 1 quiz