Edge Insight CTS2 monitoring exhaust temps on DPF?

[Alphonse]

I have read that you can set up the Insight CST2 to indicate when an active regeneration of the Diesel Particulate Filter occurs.

Can you set it up to monitor the individual temperature sensors on the inlet and outlet of the DPF?

Context of my question:

From CumminsHub regarding passive regeneration of the DPF:

"Passive regeneration occurs naturally anytime the exhaust gas temperature reaches the required threshold to burn the collected particulates from the filter (950+ degrees F)."

When the passive regeneration cannot keep up, an active regeneration ensues with extra fuel being injected to drive up the exhaust temperatures to cook the particulates off the DPF.

So watching the temperatures into and out of the DPF would be an interesting tell tale of what is really going on. While knowing specifically when a regen is underway is interesting, I would like to monitor the actual temperatures in and out of the DPF to better understand the "goings on" and wondering if a CTS2 can be set up to display that for me.

 

[Jim W]

See my comments in this thread that I responded to you.
https://www.turbodieselregister.com...ed-from-all-cylinders-during-active-DPF-regen

Jim

 

[Berrigan]

A few weeks ago on another thread a member mentioned he had an Insight installed in his truck and set the egt alarm at 1000 degrees. He was using the alarm to tell him when the engine was in active regeneration. I suppose of you are towing heavy and into the throttle hard you would set off the 1000 degree alarm anyway, but if you got out of the throttle it should cool quickly, if in regen it would stay hot. That was my take anyway. I too would like an indication of regen but not so much that I want to spend that much on an Insight. Sure wish there was a way to monitor it on the stock evic setup.

 

[Alphonse]

CTS2 will do it plus more.

See my comments in this thread that I responded to you.
https://www.turbodieselregister.com...ed-from-all-cylinders-during-active-DPF-regen

Jim

Thanks a million Jim for your post. As you recommended, I did read TDR 85 Pg. 78/79 and TDR 86 Pgs. 108/109. These are excellent articles presented by Joe Donnelly on his application and use of a Edge Insight CST. Here are my takeaways thus far -

For 2013 there are five exhaust temperature sensors:

• Exhaust Temp Sensor (EGT1) is after turbo
• Exhaust Temp Sensor (EGT2) is at rear of Diesel Oxygen Catalyst (DOC)
• Exhaust Temp Sensor (EGT3) is at rear of Diesel Particulate Filter (DPF)
• Exhaust Temp Sensor (EGT4) is at center of the Selective Reduction Catalyst (SCR) near the ammonia sensor.
• Exhaust Temp Sensor (EGT5) is at rear of the Selective Reduction Catalyst (SCR)

I assume that these haven't changed and are the same for my 2016 but I need to confirm that.

Donnelly feels the EGT1 sensor to be close enough to the turbo to give a good reading for performance monitoring and vehicle shut down and chose not to install a manifold EGT. When using EGT1 as a performance EGT, he uses the rule of thumb to equate a post turbocharger reading to a pre-turbocharger reading. The correlation: add 10 degrees for every 1 psi of boost. (20 psi of boost would add 200 degrees). In other words, the temperature ahead of the turbo is higher than the one on its exit and you can estimate this in absence of a measuerment.

Joe uses an EGT1 temperature reading of 350F or below for a safe shutdown. That temperature is surprisingly low to me but I am just learning about these beasts. Edge makes a turbo shutdown timer for earlier models but I believe it is not available at this point for 2013 and beyond. I will eventually call Edge and find out.

It appears that newer CTS2 model may have one or two more functions than the CTS model Joe installed.

So bottomline the CTS2 will do what I want it to in terms of monitoring exhaust gas temps plus much more. I now have one on order.

I will not immediately add an EGT in the manifold before the Turbo. I must admit that I would like to have it since it would give me the complete data set for the behaviour of the exhaust gas temperatures. It is reported to be an easy install other than trying to keep chips out of the turbo when drilling and tapping the hole in the manifold. I will do more research on that before I would decide to do it. The data logging function of the CTS2 would be big fun to use if you had the complete temperature data before and after the turbo.

Again, thanks Jim W. for pointing out the TDR issues and big thanks to Joe Donnelly for the two very informative articles.

 

[photowrite]

Nice to see that folks are reading the printed magazine... there really is much more/different information shared there.