Jump to content

Welcome To Mopar1973Man.Com LLC

We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.

DPF vs DEF

Posted

I joined a forum for the Ram 1500 diesels. There's talk there of there still being DPF's on these trucks that regen occasionally as well as the SCR system. My understanding has been that it's either a DPF system or an SCR system, not a combination. Can someone clue me in?

  • Replies 2
  • Views 2k
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Featured Replies

If it has DEF it has a DPF as well. With the DEF SCR system the exhaust goes something like this: DOC-->DPF-->Decomposition chamber--->SCR catalyst

DOC = Diesel Oxidation Catalyst

DPF = Diesel Particulate Filter

Decomposition chamber is where the DEF is injected

and the SCR catalyst is where a reaction occurs with the DEF infused exhaust gasses to turn them into nitrogen and water vapor.

 

Some systems(like on a ISX) also have a dosing injector to inject fuel right into the exhaust before the DOC for running active regenerations.

 

I have a video explaining this all somewhere, I'll add it to this post when I find it.

 

Here's the video I was talking about. 

Edited by bjytech

    • Like 2
    Go to topic listing

    Did This Forum Post Help You?

    Show the author some love by liking their post!

    Welcome To Mopar1973Man.Com LLC

    We are privately owned, with access to a professional Diesel Mechanic, who can provide additional support for Dodge Ram Cummins Diesel vehicles. Many detailed information is FREE and available to read. However, in order to interact directly with our Diesel Mechanic, Michael, by phone, via zoom, or as the web-based option, Subscription Plans are offered that will enable these and other features.  Go to the Subscription Page and Select a desired plan. At any time you wish to cancel the Subscription, click Subscription Page, select the 'Cancel' button, and it will be canceled. For your convenience, all subscriptions are on auto-renewal.