I'm all for innovation but remember what innovation costed Navistar the first time around. Their no DPF solution was to increase the fuel rail pressure beyond maintainable levels. If you try to hold back that pressure constantly at some time, it's going to let loose. Their track record is a high bar to overcome because not only were they wrong, but they also didn't really come to the table to help many of those struggling with the issue.
Now they think that increasing burn temperature by increasing the compression ratio is a good idea? Then dosing DEF at two points? Sounds like the same setup as before. What could go wrong? Hotter engine core temperatures, quicker degradation of oil and coolant, heads and pistons fighting a higher compression and then DEF dosing at 1000psi+ in two places when they haven't mastered dosing it in one.
Then onto the after-treatment device - where are they going to mount that? In the trailer? And look at all those computers, sensors and wiring, all mounted on a box that is expected to accept the raised exhaust temperatures that is coming from the engine.
Sounds like a hung jury before judgment in my opinion. No thank you.
