Tier 4 emissions

I see that case ih is going to use the DEF fluid on their tractors as Agco is going with. John Deere is using a different system. One question, is this new technology for all diesel engines from the small ones on up or just the big boys?? Ryan

The 2011 Ford Super Duty is using it.  Sure has a lot of customers scratching their heads.  I guess the salesman never explained it well enough....

I sure hate the idea of having to buy one more fluid to put in a tractor or truck to have it run.  

SCR system uses urea to treat the exhaust after the engine,engine is tuned for maximum power and then exhaust is treated for high nitrous oxide,no restricting particulate filter,or hot exhaust being put back into the engine.EGR system recirulates 25-30% of exhaust back through the engine and then filters the exhaust through the DPF(Diesel Particulate Filter) After 8-10 hours of running DPF "burns out" by injecting diesel right into the exhaust stream,fuel consuption goes sky high,you lose power,and no matter what your salesman says it takes 30-45 minutes too finish the burn,engine has too run at high idle during this time and exhaust gets REALLY hot (1300-1500F) also service intervals are shortend because of all the soot that is recirculated through the engine,and cooling system is 25-30% larger.They say a SCR engine is still about 10% cheaper too run even with the added cost of DEF fluid because fuel encomy is so much better and you don't have the shortend service intervals.(not too mention the risk of setting your shiny new combine on fire with 1400f exhaust!!)

Right now in the construction line we are at interum tier 4, or it4.  deere is using the egr and partiulate filter, they are also saying that to get to tier 4 which is coming in  a couple of years they will be using the diesel fluid with the particulate filter.   Everyone is scrambling, CAT abandoned the OTR truck engine market partially due to not meeting emissions.  All the eng mfgs are claiming their system is the best,   I dont believe any of them cause I know the problems weve had with tier III and nobody is workin on a fix, just pointing fingures at everyone else.     

On trucks the Urea/DEF tank is engine coolant coil heated, the tractors I would think should be the same.  I too am not a big fan of adding another fluid to use diesel and the expense to do so as the fuel is already high enough, the DEF in the Ford system is considered to last one tank to an oil change, same for Dodge although they put the caveat the fluid may exhaust quicker with heavier load continuous operations.

The fluid at our GM dealer is $34/5 gallon pail, at the local fuel stop the fluid is pump feed and $4.73/gallon, trucking costs have to adjust for the added expense.


Edited by DMiller - 25 Feb 2011 at 10:55am

I Don't believe all the global warming crap either,but emission control is here too stay we might as educate ourselves,because it has too be dealt with on any new equipment.

My Case dealer said they will have def fluid availible in bulk soon for about $2.50-$3.00 per gallon, 27 gal. tank on a 200hp tractor sposed too run about 2 tanks of fuel.Also any new case tractor comes with 275gal tote of DEF fluid.

I wonder if this will speed up the process of trying to weed out all our old polluter diesels from the past? I'm nervous parts availability is going to go south soon.

Bobcat dealer told me last week that replacement parts for any diesel powered machine without a tier engine will be outlawed after tier 4 is in effect.  he didn't say where he got his info but it's hard to believe.   that would put me out of business.  my newest tractor is an 8050.  and i won't go quietly either.

What about when these engines just get run for a short period of time in winter and they never run long enough to get warm say like just putting a bale of hay in the feedre every day for the cows?

My 2011 uses the DEF and it regenerates the exhaust every 700 miles so im told. Im not real crazy about putting all this crap on the trucks and tractors, but like my grandpa said were keeping these idots with a job.

This was a thread on AG TALK  a few times , CA + TX  had a Cash for Clunckers in the Ag equipment ,said it payed great on old tractors but you had to replace them with a newer one to meet the standards - and they are xpensive ; older equipment had to be turned down in the factory stock settings to stop the smoke etc ; some are being fitted\ useing the urea system ; how many old diesels are out there running everyday in construction, farming, logging etc ???? A bunch - once again more BS  trying to make it harded on the working man ;  parts will always be around just cost more to keep the old stuff chugging