The left bank is the one that gets the extra fuel during a regen. The right bank feeds the EGR
cooler, and therefore there is less heat in the EGR
system during regen lowering stress on the EGR
cooler. One of the many lessons they learned.
Thought they got away from that for oil dillution issues and used a injector in the exhaust manifold like the new LML Duramax does?
If they are still using in cylinder regeneration, that is very bad news.
Also, by using Urea, the engine timing can be optimized and the Urea neutralizes the NOX caused by doing so.
* That is another reason why EGR
is reduced in the new motor, because the NOX can be Neutralized by the DEF injection. So, allowing the motor to utilize more O2 to burn the fuel more completely through reduced EGR
and also allowing more timing advance, results in major MPG
* The reducton of EGR
also reduces particulate emissions thus reducing required regnerations of the DPF and the MPG
The new 6.7 gets better MPG
basically from several things that have been changed....all are going to equal better life and MPG
than previous DPF equipped diesels.