Compression Ignition Addict
Join Date: Jan 2019
Thanked 24 Times in 23 Posts
Mentioned: 6 Post(s)
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Your truck has 2 regeneration methods.
1. Passive -- This occurs when the load and speed of the engine produce temperatures greater than 350 degrees C, and it burns off the trapped soot as the vehicle operates.
2. Active -- If the duty cycle does not produce high enough exhaust temperatures, the DPF becomes loaded with soot, which is indicated by its pressure sensors. Active regeneration is then required
What you experienced was an active regeneration cycle. Regeneration will happen automatically at maximum intervals of 500miles wether your truck needs regeneration or not. It will also happen when you hit 100%. While active regeneration is in progress, you will notice white ash which looks like smoke coming out of your tail pipe. This is normal. Even though you were not at 100%, you must have reached the maximum interval of miles. Ford maximum DPF full % is 300% but your truck would be at the dealer well before you got that high. Lol
You will not notice passive regeneration as it automatically works when parameters are met but does not raise the exhaust gas temperatures like an active regeneration. A good example is when I drive my 1100mile trip to work, my egts are always above 350 degrees so passive regeneration is keeping my filter clean. Every 500miles, I will notice the truck starting an active regeneration which in my situation is not needed because of the passive regen parameters being constantly being met so I turn the active regeneration off to stop the cycle. No sense in burning the filter and wasting fuel when my filter is already clean.
Do not turn of your active regeneration unless you are in a situation like mine. Turning off active regeneration is used for another situation like mine. I can go for weeks out at work where my truck will not maintain over 30 miles per hour for more than 10 minutes and the truck does a lot of idle time. In a situation like this, I turn off my active regen to allow the filter to fill up. When it is full, I perform a stationary Operator Comanded Regeneration OCR. My screen will tell me my filter is full and will let me select an option to perform an OCR. I park my truck and hold the OK button. Truck will then do a stationary OCR and it will last for 20-30minutes. The reason I turn off the active regeneration is because I don’t want the active mode to keep trying to turn on when I know I won’t be able to maintain a regen due to meeting active regen requirements of maintaing speed over 35mph (or around that speed) for 20-30min.
If in your settings menu, you have the ability to turn auto regen off, this means you have the ability to do an OCR. Leave your auto one on and if for some reason you do reach 100%, watch the ford video on how to do an OCR.
Long post but most guys do not understand the entire DPF system. They say they do but I have seen numerous posts made with incorrect information. If you have any questions, ask. Don’t be one of those guys. Lol.