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Old 06-12-2011, 08:17 PM   #1
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Every System Integrated. Cummins Aftertreatment System

I picked up this single sheet flyer from the Cummins Exhibit at the RVIA Exposition this past December and I would like to publish it for those folks that want to become more familiar with Selective Catalytic Reduction (SCR) as it applies toward achieving 2010 emission compliance on these and other engines.
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File Type: pdf Cummins SCR.pdf (2.21 MB, 147 views)
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Old 06-15-2011, 07:09 PM   #2
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Another 3-400 # I've got to carry around! I've got it on my '11 Entegra DEF prices range from 15.95 /gal to 4.89/gal. Some Pilot/J stations are putting it at the diesel pump at 2.87/gal. EPA....another un-regulated un-elected big brother sticking his green flag nose into my business/pocket.
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Old 06-15-2011, 07:12 PM   #3
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$125 5" turbo muffler and your done.
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Old 06-19-2011, 03:46 PM   #4
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Wish it was as simple as that. The whole SRC system is integrated through sensors into the coach computer. Unplug one input and you're in a world of doo! Run low on the DEF fluid and the puter will slow you to crawl, run out and you're shut down. Can't trick it with water or anything else!
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Old 06-19-2011, 09:10 PM   #5
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Quote:
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$125 5" turbo muffler and your done.
That's not going to get you very far at all on a 2010 emission compliant engine. These engine do run or have mufflers.
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Old 06-19-2011, 10:38 PM   #6
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I had seen their plans in about 2008. But this is interesting to see what actually transpired. I don't think there is anything at all here that could help milage though as indicated. There may be other engine or parameter changes that did, but not this, of and in itself.
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Old 06-19-2011, 10:43 PM   #7
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Wish it was as simple as that. The whole SRC system is integrated through sensors into the coach computer. Unplug one input and you're in a world of doo! Run low on the DEF fluid and the puter will slow you to crawl, run out and you're shut down. Can't trick it with water or anything else!
I am saying this, tongue in cheek, but it might actually work.

What about peeing into the tank? That's urea, but maybe not the right concentration.
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Old 06-20-2011, 04:44 PM   #8
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Quote:
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I had seen their plans in about 2008. But this is interesting to see what actually transpired. I don't think there is anything at all here that could help milage though as indicated. There may be other engine or parameter changes that did, but not this, of and in itself.
Adding SCR to Cummins engines has improved fuel mileage due to running more injection advance timing than earlier engines could while meeting EPA emissions standards. The larger ISX 15L engines have been able to achieve nearly 5% increase in mileage. May not seem like much to a MH operator but to a large truck fleet that buys millions of gallons of fuel per year, 5% is a very big deal.
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Old 06-20-2011, 05:58 PM   #9
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You might be getting 5% more fuel milage, but what I've heard it doesn't make up the difference in maint.
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Old 06-20-2011, 06:35 PM   #10
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Adding SCR to Cummins engines has improved fuel mileage due to running more injection advance timing than earlier engines could while meeting EPA emissions standards. The larger ISX 15L engines have been able to achieve nearly 5% increase in mileage. May not seem like much to a MH operator but to a large truck fleet that buys millions of gallons of fuel per year, 5% is a very big deal.

This makes sense, Like I said, it had to be other engine operating parameters.
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Old 06-20-2011, 06:46 PM   #11
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This is not totally on subject, but may be of interest.
Where I worked, has not bought anything that is Cummins powered since this went into effect. They did get a new D10-T, but Cat has gone a different route. Not sure where the next cycle of truck buying will go to, but Kamatsu has started making their own engines and transmissions. (they were Cummins and Allison) From my experience with them, that is scary. I think any mineing equipment operator should be waiting to see what someone's else's experience will be, before commiting to that. Too much of the bottom line depends on that equipment having a very high availibility factor. (Kamatsu's equipment line is at least one generation behind).
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Old 06-21-2011, 02:02 PM   #12
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Quote:
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This is not totally on subject, but may be of interest.
Where I worked, has not bought anything that is Cummins powered since this went into effect. They did get a new D10-T, but Cat has gone a different route. Not sure where the next cycle of truck buying will go to, but Kamatsu has started making their own engines and transmissions. (they were Cummins and Allison) From my experience with them, that is scary. I think any mineing equipment operator should be waiting to see what someone's else's experience will be, before commiting to that. Too much of the bottom line depends on that equipment having a very high availibility factor. (Kamatsu's equipment line is at least one generation behind).
Since you bring up points that are off topic for MH, I will send a private email.
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