Cummins to use SCR System

I checked with our Cummins rep and he says the dual overhead cams will remain in 2010. He said essentially the change for 2010 will be the addition of the XPI injection system.

The Detroit Diesel folks appear to have really prepared well for this as the DD15 is set up to run optimally in 2010. It is interesting that you can get both a DD15 and an ISX in a Freightliner and a Western Star in 2010....which should really benefit both those truck brands as those 2 engines are excellent ones.

I saw a presentation on the DD15 SCR system and it looks like its manageable for our fleet. Sure, there will be some electronics and software that will be added which have risk for problems. But the idea of putting an extra fluid on board just doesn't seem to be a big problem to us...especially since the range between urea fill-ups is like 4,000 to 6,000 miles.

Our fleet uses TA and Pilot for most of our fuel. Both of those truckstop chains will be stocking the urea fluid so we appear to be all set there. Now we just need to have our economy improve and things will be just fine in 2010.

happy thanksgiving, all !

 

anyway they need to do some changes on the head,dd15 cylinder head design looks more compact and lightweight than isx,have heard alot about cracked heads on first signatures.
concerning SCR ,extra fluid will be a problem for the vocational market

 

perhaps....the EGR route won't be easy either as the radiators and cooling systems will get a bit bigger. The fuel economy will be a disaster I understand. Cummins didn't make the switch from EGR to SCR without a lot of careful testing and consideration. They lost fuel economy in the order 7% to 10%. That is huge for the trucking business.

SCR will be an easy decision for our fleet.

 

paccar is developing diesel SCR,the fuel(not urea) will be injected in the NOx catalizator
dont know if sistem will be ready for 2010

 

It's developed and made by Eaton not Paccar. They have been testing it at least 3 years now.

http://www.eaton.com/EatonCom/OurCompany/NewsandEvents/NewsList/CT_125721

 

my mistake,sorry
if the system will go massproduction it could be the end of urea SCR

 

I hope it will work, at the moment there's a great waste problem in Europe because only a few service stations have urea pumps, you have to buy it in 10 or 20 litre plastic cans, there is empty cans everywhere.

 

here is the description of the system

 

We checked into it. Highly misleading. It's at least 5 years away...and even then it won't work for high horsepower engines. It may work for some low end medium duty stuff. The fuel economy loss from the diesel SCR is in the range of 10% to 20% from what I learned.

urea SCR is working very well in Europe and it's getting pretty good reviews in North America

I see Mack Trucks has a good website that discusses SCR. I've learned a lot by emailing the guy on there

 

I apologize if this has already been said...

The heavy duty Cummins will not use the urea, only the medium duty engines. The cooling systems will be bigger...so will the engines. I'm not sure if the names of the engines will remain, but the ISX will be a 16 Liter and the ISM will be 11.9 Liter.