I'm sure there's a key cycle or hour timer that will initiate a regen, but even then, it would be a short regen if the filter is clean.
I don't think you can be "too clean".
Yeah there are perameters for that. I think its like 1300 miles and it will do one no matter what. During the summer my truck rarely does an active regen since its hooked to my camper most of the time.
What are the egts? Possibly running to cool, not allowing it to get a high enough DPF inlet temp, therefore it can no longer regen passively?
I thought that too, so did morgan. I have been monitoring it but i honestly didnt pay close enough attention before the turbo swap. I just drove it. DOC outlet stays around 550 degrees, DOC inlet fluctuates but averages 500 degrees hince the 550 DOC temp.
So you might be onto something. but I cant verify that for sure.
that's my concern on my 6.4
My tuning has been in a holding pattern for a few weeks (busy busy)
The truck runs cooler with my tuning than with OEM, BUT, the truck is a reg cab that runs around empty most of the time, so it's not like it ever really gets into passive mode.
It does a 10-12 minute regen about every 4hrs on the highway or every couple days in my daily routine.
Thats about what mine is doing now. I think the 6.7s will eventually throw a DPF efficiency code if they regen too many times in a certain amount of miles
Any precious metals such as platinum, palladium, and rhodium need a minimum of 600*F to start working effectively. And then a alloted amount of time to soak the metals to react efficiently. Of course the damaging melting point of 1350*F and you ball up the precious metals on the subject straits of the element.
That is why there are so many thermocouplers on the exhaust system.
That would explain frequent regens for most guys especially if you never get a passive regen. Which is built into stock tuning to run alittle hotter exhaust.
Dustin, have you studied the lambda of diesel or natural gas engines? If not it's very interesting to learn and will really help with your tuning for "clean energy"
I have read more about lambda sensors then i ever care to know about lol. There are two different tables, dynamic and normal, dynamic must be during a regen. The problem is the readings that i get don't really add up to what i see as far as the tuning side goes as well as what is a true A/F ratio. so either the date that i read isnt accurate or the scale is something different.
For example the tuning calls for lambda to control smoke, the tables are around 1.2 and vary to .91 and 1.38 throughout the table. However while driving the sensor reads .56 lugging the engine and 1.2 at idle in gear and 1.3 in park. So clearly the translation is different. THey are also using the sensors post dpf, so i have a feeling that that effects the reading.
I was going to put a lambda sensor in the down pipe and watch it from my dash daq but now that drew tech doesnt own the dashdaq anymore i can not get support. So... bummer.
The other big issue im having is nothing i have reads all the right info
mini max reads boost, back pressure, pw and ICP, calculated torque
Dashdaq will read all temp sensors in the exhaust lambda and pressure sensors. but wont read PW or a good torque (which is what i need to help along with the tuning)
My auto enginuities is pretty much worthless, so i really dont have one thing i can use to data log or take info from which irritates me. And i cant swing IDS.
Im not giving up, the plan right now is to try and hit 600 with this turbo and a drop in pump and then put the dpf back on and see what happens.
Right now i have the pump maxed out at 1300 us, there is no smoke even at 28 psi. feels like 500 ish at the wheels, super super fun to drive.
