i read something that DPF systems might be done away with

i saw something somewhere that said that DPF systems might be done away with. they are saying the urea injection ends up emitting dangerous ammonia gasses, which makes perfect sense. perhaps CARB will eat their words. burning off urea most likely comes with it own set of problems, a problem being created by the very way the system works.

 

cant we just get rid of this crap and have properly tuned trucks running clean just because they are properly tuned?

 

i can tell from experience paccar engines arent the best LOL.

i have myself a little kubota sub compact diesel with a little D902 3 cylinder, anything under 26 hp i believe is exempt from tier 4 emissions. my BX2350 is a 2007 which predates all of this nonsense , but the newest sub compacts still dont have regen. the tractor puffs out a small amount of soot (unburned fuel) when first started but once its started it doesn't smoke at all, does not matter how hard you are running it. its an extremely simple IDI diesel engine.... no DPF system. once you get past a certain hp rating even off road diesels have to have those systems, absurd because that's an offroad machine. its a "cute" little diesel looks a miniature truck engine. they say they are just as durable as well.