Mack, A2010 Emissions Solution

Exhaust

Aftertreatment System Components and Selective Catalytic Reduction (SCR)

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

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

SCR works injecting Diesel Exhaust Fluid (DEF) into the 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

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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

The Mack SCR system simple and fective, with few components. consists a Aftertreatment DEF tank positioned near the standard diesel tank, plus a Aftertreatment DEF pump, Aftertreatment DEF Dosing unit and SCR catalyst.

The advantage using DEF that enables the engine use less EGR - - and higher oxygen levels - - for better combustion, while meeting the A near - zero NOx emissions requirement NOx. using DEF , avoid the disadvantages increasing EGR massive levels. This results better fuel economy from your Mack engine.

Horizontal compact size

Caution

not put diesel fuel the Aftertreatment DEF tank. Diesel fuel, sprayed into the hot exhaust along with the DEF , could ignite explosively causing a fire resulting personal injury damage the exhaust system.

Diesel Exhaust Fluid (DEF)

Diesel Exhaust Fluid (DEF) a reactant s key the SCR It’ s a ultra - pure solution urea and ultra - pure water . Urea a compound nitrogen that turns ammonia when The fluid non and not dangerous when handled However , highly corrosive certain especially copper and Read the separate section concerning the handling DEF solution.

ea. Use fluids other than API certified Diesel Exhaust Fluid will compromise aftertreatment system increase and may impact your product Never dilute DEF with water any other fluid. recommended that DEF not stored extreme hot cold for prolonged Follow the instructions for proper storage and handling indicated the container provided with the purchase.

Use only Diesel Exhaust Fluid that clearly labeled meeting ISO - 22241 standards, and certified the American Petr oleum Institute. The container must display the API certification seal. Never use agricultural industrial grade

Note: Agriculture mixtures are not pure enough for use the SCR system and impurities the solution will comprise the SCR

Diesel Exhaust Fluid (DEF) Handling

When handling DEF important prevent contact with electrical

There a risk that the DEF will cause oxidation that cannot W ater compressed air not since DEF quickly oxidizes certain a disconnected connector comes into contact with the DEF solution must replaced immediately prevent the DEF solution from creeping further into the copper