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Was macht ein SCR Katalysator?
Bei der SCR-Technologie (Selective Catalytic Reduction oder Selektive katalytische Reduktion) werden die Stickoxidemissionen (NOX), die während des Verbrennungsprozesses im Dieselmotor entstehen, anschließend in einem Katalysator in elementaren Stickstoff (N₂) und Wasser (H₂O) umgewandelt.
Hat Euro 6 immer AdBlue?
Aktuell gibt es Diesel-Fahrzeuge der Euro-6-Norm, die ohne AdBlue auskommen. Da in den nächsten Jahren aber strengere Abgasgrenzwerte vor allem für Diesel eingeführt werden, müssen immer mehr Autos mit der Technik ausgestattet sein.
Was macht AdBlue?
AdBlue spielt bei der Reduzierung der Stickoxide im Abgas von Dieselmotoren durch SCR-Kats eine entscheidende Rolle. AdBlue ist eine wässrige Harnstofflösung, die aus 32,5 Prozent Harnstoff und 67,5 Prozent demineralistieren Wassers besteht.
What is SCR and how does it work?
SCR can reduce NOx emissions up to 90 percent while simultaneously reducing HC and CO emissions by 50-90 percent, and PM emissions by 30-50 percent. SCR systems can also be combined with a diesel particulate filter to achieve even greater emission reductions for PM. In the commercial trucking industry,…
What does BlueTEC SCR stand for?
BlueTec. The technology in BlueTec vehicles includes a selective catalytic reduction (SCR) system that uses diesel exhaust fluid, and a system of NOx adsorbers the automaker calls DeNOx, which uses an oxidizing catalytic converter and diesel particulate filter combined with other NO x reducing systems.
What is the difference between Def and SCR technology?
The DEF sets off a chemical reaction that converts nitrogen oxides into nitrogen, water and tiny amounts of carbon dioxide (CO2), natural components of the air we breathe, which is then expelled through the vehicle tailpipe. SCR technology is designed to permit nitrogen oxide (NOx) reduction reactions to take place in an oxidizing atmosphere.
What is the physical makeup of a SCR?
Physical makeup: The SCR is made up of two „P-N“ junctions with a „Gate“ attachment between them (a normal diode [power type semiconductor diode] has one P-N junction). The gate is connected between the two P-N junctions with a current waiting in the forward bias direction [+ to -] and the voltage is above 1-volt.