Exhaust Aftertreatment System Components

Selective Catalytic Reduction (SCR)

Selective Catalytic Reduction (SCR) emissions - reduction technology with the ability deliver near - zero emissions nitrogen oxides (NOx), a smog - causing pollutant and greenhouse gas. SCR’ s performance has been proved millions miles real - world trucks other countries, well long - term field tests the U.S.

SCR reduces NOx emissions very low levels, while the same time delivering excellent fuel economy and reliability . The system t change the design the basic engine. Rather , SCR aftertreatment system which converts NOx the exhaust stream into harmless gases. Modern diesels already use exhaust aftertreatment systems, called diesel particulate filters, control emissions another pollutant, soot (also known particulate matter PM).

SCR works injecting Diesel Exhaust Fluid (DEF) into the exhaust. DEF a solution ultra - pure water and DEF works with the heat the exhaust and a catalyst convert NOx into nitrogen and water vapor - two harmless and natural components the air The end result cleaner air , excellent fuel ficiency and a reliable emissions control system for s modern diesel W2031651

System Operation

1 Diesel engine optimized for high low particle emissions and low fuel

2 Aftertreatment DEF tank

3 The Aftertreatment Control Module (ACM) continuously monitors and adjusts the DEF injection

4 DEF injected into the exhaust gases between the Aftertreatment DPF (5) and the SCR catalyst (6).

5 Aftertreatment Diesel Particulate Filter

6 the SCR catalyst, nitrogen oxides are transformed into harmless nitrogen gas and water .

7 The system notifies the driver when time refill tank with DEF .