1/1/2024 0 Comments Blue defThe water and nitrogen are then released into the atmosphere through the exhaust. X are reduced by the ammonia into water and nitrogen, which are both nonpolluting. DEF from a separate tank is injected into the exhaust pipeline, and the exhaust heat decomposes it to ammonia. X, which are harmful pollutants, from nitrogen in the atmosphere. The excess air leads to the generation of NO Several brands of SCR systems use DEF: BlueHDI is used by PSA Group vehicles including Peugeot, Citroën, and DS Automobiles brands BlueTec by Daimler AG and FLENDS (Final Low Emission New Diesel System) by UD Trucks.ĭiesel engines are typically operated with a lean burn air-to-fuel ratio ( over-stoichiometric ratio) to ensure the full combustion of soot and to prevent them from exhausting unburnt fuel. DEF is also sold as AdBlue, a registered trademark of the German Association of the Automotive Industry. In the international standard defining DEF ( ISO 22241), it is referred to as AUS 32 (aqueous urea solution 32%). X) in the diesel exhaust emissions from a diesel engine. DEF is consumed in a selective catalytic reduction (SCR) that lowers the concentration of nitrogen oxides ( NO Specifically, DEF is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. Standardized aqueous urea solution for exhaust aftertreatment A 1.5-liter and a 10-liter AdBlue container Hino truck and its SCR next to the diesel particulate filter (DPF) with regeneration process by the late fuel injection to control exhaust temperature to burn off soot Passenger car using an AdBlue pumpĭiesel exhaust fluid ( DEF also known as AUS 32 and marketed as AdBlue ) is a liquid used to reduce the amount of air pollution created by a diesel engine.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |