Question about Regen
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Elder User
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From: The Sunshine State
Question about Regen
When the Truck goes into Regen at normal driving speed and the truck gets stopped at a light, does the regen stop when the brakes are applied. Does it resume when the truck moves again............Lew
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From: Tallassee, ALabama
The simple answer is no, it does not stop when you "pause" for a red light. The ECU knows when you are stopped and moving at speed regardless of the speed. It takes all this into consideration as to whether to continue or stop the regen process. The ECU will process the parameters (which I do not know) and determine whether you are traveling fast enough to complete regen or to terminate it. The ECU will either restart the regen or delay it till later should you stop and idle longer than the parameters allow or shut the engine off during the regen process.
My thoughts, just drive the truck and not worry. If the DPF gets too much soot and does not complete a regen to resolve this, it will give you a message such as "EXHAUST OVERLOADED DRIVE TO CLEAN" or "EXHAUST AT LIMIT DRIVE TO CLEAN NOW". These messages are important and you should drive the truck to complete a regen or have a method to do a manual regen.
My thoughts, just drive the truck and not worry. If the DPF gets too much soot and does not complete a regen to resolve this, it will give you a message such as "EXHAUST OVERLOADED DRIVE TO CLEAN" or "EXHAUST AT LIMIT DRIVE TO CLEAN NOW". These messages are important and you should drive the truck to complete a regen or have a method to do a manual regen.
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Elder User
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From: The Sunshine State
My thoughts, just drive the truck and not worry. If the DPF gets too much soot and does not complete a regen to resolve this, it will give you a message such as "EXHAUST OVERLOADED DRIVE TO CLEAN" or "EXHAUST AT LIMIT DRIVE TO CLEAN NOW". These messages are important and you should drive the truck to complete a regen or have a method to do a manual regen.[/QUOTE]
Ok Thanks for the info guys. I never have got a message to "Drive To Clean", but it seems that the Regen pattern on the new 2016 is different than my previous 2011 6.7. Just hit 4K Mi and all is well. Just curious about the Regen characteristics of the Gen II engine.
Ok Thanks for the info guys. I never have got a message to "Drive To Clean", but it seems that the Regen pattern on the new 2016 is different than my previous 2011 6.7. Just hit 4K Mi and all is well. Just curious about the Regen characteristics of the Gen II engine.
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Incidentally, it had started the regen cycle at 2.32 gpl and 77% dpf load - I presumed it had started earlier than the normal 3ish gpl and 100%+ dpf load due to the several partial regens earlier.
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I used to worry about all this.
Now I just drive and let the truck do what it wants as it will anyway. You can't really tell if its in a regen unless you are watching the fuel consumption.
Now I just drive and let the truck do what it wants as it will anyway. You can't really tell if its in a regen unless you are watching the fuel consumption.
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Park and neutral will stop an active regeneration after 10 seconds. It will not stop if you are simply passing through neutral to reverse then back to drive, for example. I can reproduce this any time I'm in an active regen. Of course my knowledge is on a 2011 like your old one.
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I've heard others say this too. I guess my 2016 is different... I can tell when mine goes into regen. The sound of the engine changes and sometimes I can feel it. I rarely drive with the radio on, or any thing else that would make much noise, so I can easily notice the change in sound unless I'm on a hands free phone call or something. Even when the wife is riding with me, I'll ask he if she notices. Sometimes she does, sometimes not.
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I've heard others say this too. I guess my 2016 is different... I can tell when mine goes into regen. The sound of the engine changes and sometimes I can feel it. I rarely drive with the radio on, or any thing else that would make much noise, so I can easily notice the change in sound unless I'm on a hands free phone call or something. Even when the wife is riding with me, I'll ask he if she notices. Sometimes she does, sometimes not.
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I was waiting at a drive through the other day while mine was in regen. It stayed on for 6-8 minutes without being in park - I left it in gear intentionally since my last 2 or 3 regens had only been partially completed. It got down to around 1.2 gpl and 11% dpf load when the regen stopped. It was very obvious by the sound of the engine that the regen stopped - it went from a higher pitched jet engine type of sound to a deeper throaty diesel engine rumble. As I drove it the numbers went down even more to 1.01 gpl and 4% dpf load. Then they started going back up like normal.
Incidentally, it had started the regen cycle at 2.32 gpl and 77% dpf load - I presumed it had started earlier than the normal 3ish gpl and 100%+ dpf load due to the several partial regens earlier.
Incidentally, it had started the regen cycle at 2.32 gpl and 77% dpf load - I presumed it had started earlier than the normal 3ish gpl and 100%+ dpf load due to the several partial regens earlier.
I found that there is a lot of conditions that start and stop Regens. I also think that the last Flash recall done to my 2013 has changed some values and I'm going to have to change the equation for the Soot PID.
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From: Aloha (Portland), OR USA
I've found it interesting to watch when the truck decides to go into regen. The other weekend it decided to kick in as I was leaving the mountain after a day of skiing. It was a 35 mile drive into town for dinner, but all downhill and 30-35 degrees and snowing. The truck never came all the way up to temp, so I knew that regen wasn't successful.
If the regen would have waited to trigger until after the dinner stop, it would have had 60+ miles of 70 mph freeway driving to get a good cleaning in, but when does it decide to start up again? The next morning, when I'm only 5 miles from work. I have yet to get the "DRIVE TO CLEAN" message even with all the interrupted regens, so I haven't been too worried about it.
If the regen would have waited to trigger until after the dinner stop, it would have had 60+ miles of 70 mph freeway driving to get a good cleaning in, but when does it decide to start up again? The next morning, when I'm only 5 miles from work. I have yet to get the "DRIVE TO CLEAN" message even with all the interrupted regens, so I haven't been too worried about it.
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