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Old 03-08-2016, 10:37 AM   #1
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Regen

Has anyone had an issue with ever having to do a regen? If so what steps did u complete to do a regen? Just curious if it is something I should lookout for in the future.
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Old 03-08-2016, 10:39 AM   #2
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Guess I don't know what a regen is...


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Old 03-08-2016, 10:44 AM   #3
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Regen

Only with DEF Ernest.
I have a 2011 and to my knowledge it has never went into regen. It has never called for it and hasn't done it on its own. No idea how to do it and won't worry about it.
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Old 03-08-2016, 10:48 AM   #4
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Thanks Phil good to hear that you haven't had to deal with it.
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Old 03-08-2016, 10:58 AM   #5
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Quote:
Originally Posted by MotoxDad View Post
Has anyone had an issue with ever having to do a regen? If so what steps did u complete to do a regen? Just curious if it is something I should lookout for in the future.
I always thought a regen was controlled by the engine computer? Err at least that is how it works on a truck...would a Berk be any different?

Only thing I would imagine you would notice - or be a indicator of regen - is your fuel economy goes in the toilet during regen. As I understand it a passive regen occurs automatically while you are driving and is completely transparent to the driver.
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Old 03-08-2016, 11:10 AM   #6
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I don't really know if the pickups are like the bigger units.

We have a few newer units at work and this regen is a pita. You just never know when the regen will happen and it happens so unexpectedly.

Our units are operating trucks not transporting trucks, so when your out in the field doing a job and the unit decides it's time to regen Thats it, your done, all systems shut down until the regen is completed. This is very annoying to say the least.

The actual regen process doesn't really take all that long, our units usually only take 20-25mins, usually.

The regen can happen once a month or two. There are a few factors like idle time, travel time.

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Old 03-08-2016, 11:15 AM   #7
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I usually travel with my instant mileage screen showing, or with the large digital mph showing. I often toggle back and forth between. The only way I know a regen is going on is when my fuel mileage drops for a while. It's pumping extra fuel into the exhaust system to burn out the soot... from what I understand about it... hence the drop in mileage. Of course, you can see that I drive a pickup and not a MH... but from what I've read, the regen process is the same across the spectrum of diesels that do it.
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Old 03-08-2016, 11:35 AM   #8
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My Berkshire had a light come on during regen. It was on the highway, and the color of the light was yellow. It came on red once, and that was when I stopped while the regen was running. My impression is that this was to warn me that exhaust temps were higher than usual and to be wary of flammables near the exhaust (e.g., tall grass). I did not observe the impact on fuel economy. Must have dropped, but I'm saying I didn't note it.


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Old 03-08-2016, 12:58 PM   #9
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There's a LOT of info on the regen process if you read through the Freightliner manuals. The auto regen will only occur when driving above a certain speed. This is to make sure the high temp exhaust gases (approx 1,600F) are exhausted away from the MH properly. It also ensures no one gets near the exhaust during regen. There is a way to manually force a regen; the process us in the FL manuals. For the folks who don't understand regen, a very simplified explanation is the it's the process to clean the exhaust filtration system by basically burning the accumulated buildup off the ceramic filters.


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Old 03-08-2016, 01:13 PM   #10
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Regen

The only way I know my berk is performing a regen is because I notice a drop in fuel mileage. Normally when you take your foot of the gas, the instant MPG goes to 150.5 but when in regen will not. It is much lower. I usually stay around 70MPH and avg about 10 to 11 mpg depending on winds and hills. During regen my instant mpg goes down to around 8mpg. I've noticed this a few times now and last about 5 minutes or so. No light has ever come on though.


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