Originally Posted by asianml
Does that include the new range of CDI engines now available in the US, and soon Bluetec?
The urea-based selective catalytic reduction systems, in which the injection of the AdBlue urea solution into the pre-cleaned exhaust gas releases ammonia (NH3), causing the nitrogen oxides to be converted into nitrogen (and water) in a downstream catalytic converter, is currently the most effective established aftertreatment technique for NOx reduction, and is looked to by many truck manufacturers as the solution for their commercial diesels.
So in the long run, what do you with the several catalytic systems when they need replacement? How much will they cost to replace? The diesel engine in the beginning was a very simple design when compared to a gas engine, however now they are breaking the KISS ("Keep It Simple, Stupid") rule.