2025 Ram/Cummins: Sifting Through – Part III

[TDRComm]

2025 Ram/Cummins: Sifting Through – Part III

As we continue into the third week of our analysis of the “Truck Show” podcast with “Mr. X” it is time to do some additional reflection.

So, let’s repeat the comment from last week “When you see/hear credible information it should be shared. To the point: Take some time and read ‘Sifting Through – Part I’.”

New information: “Mr. X” discusses the calendar year 2027 and an increase in engine displacement. “Mr. X” discusses faster “DPF heat.” Take a look back in time to TDR Issue 120 (May 2023) where a technology that will help the cold-start NOX problem is described.

PLEASE CLICK HERE TO READ ISSUE 120 PAGE 45

 

[Diesel85]

To summarize:

Eaton/Tenneco is using an Eaton TVS V180 (small supercharger) with a 12V/24V electric motor attached to it to blow the hot exhaust gasses through the DOC/DPF/SCR system to control cold start NOx levels.

 

[Seane1987]

The Cummins L9 and X12 are going away once the 2027 emissions rules go into effect, they will both be replaced by the X10 which is going to have an electric grid heater in place of the DOC to create heat for DPF regeneration. The grid heater will be powered by a dedicated 48 volt alternator, but the rest of the engine will continue to be 12 volt. The Ram 6.7 and the on highway/medium duty B6.7 are completely different engines at this point, but I suppose this could work in a pick up truck application.

 

[TDRGuy]

Thanks "Diesel85" and "Seane1987" for your insightful comments.
Your inputs are what make the TDR the best source for credible information.

RP