Benelli Bob
New member
My understanding is that EGR (exhaust gas recirculation) is used to reduce NOx. While the 2012 Passat uses adblue to reduce Nox does this eliminate having EGR and its complexities?
Bob
Bob
You still need the oxidation catalyst (the first component in the picture you posted) to convert the NO (nitric oxide) into NO2 (nitrogen dioxide).Does the 2012 Passat still have a NOx oxidizer in addition to the DPF+EGR+SCR systems? Looking at this image I'm wondering: