actual use of tier 4

[FatTire]

My understanding is that the amount of fuel burned in a regen is a tiny fraction of the tractors fuel use, a rounding error in the end.

Any correlations between the on-road truck industries experience with Tier 4 and what we've seen with tractors is really an apples to oranges comparisons. As has been covered many times, the workload and usage patters between truck and tractor engines are completely different and technologies matured quite a bit before making it to us.

I think you're correct, regen on a tractor is not a huge use of fuel. In the trucking world, the fleet managers learned that managing idle time delivers more fuel savings than is lost to Tier 4. How many people using tractors think about idle time that carefully? Probably not too many.

 

[FatTire]

My understanding is that the amount of fuel burned in a regen is a tiny fraction of the tractors fuel use, a rounding error in the end.

Any correlations between the on-road truck industries experience with Tier 4 and what we've seen with tractors is really an apples to oranges comparisons. As has been covered many times, the workload and usage patters between truck and tractor engines are completely different and technologies matured quite a bit before making it to us.

I think you're correct, regen on a tractor is not a huge use of fuel. In the trucking world, the fleet managers learned that managing idle time delivers more fuel savings than is lost to Tier 4. How many people using tractors think about idle time that carefully? Probably not too many.

 

[knightrider955]

My little Mahindra has over a year on it and no engine issues. It doesn't have to re-gen or add fluid. Just a puff of smoke on start up and no diesel smell. It this is Tier IV, I like it.

Thats because currently any engine 25 HP or less is Not required to have any additional emissions. So they are automatically given the tier 4 designation.

 

[meyerld]

So, I may be totally wrong here but have studied it already way too much. I am buying an 85 HP Deere and at first was anxiously looking for an older version with less of the emissions technology on it. But, the more I talked to people and studied the technical articles, the more it seemed to me that the Tier 4 final version resulted in a cooler running engine and exhaust system. Also, the efficiency of the engine is higher. More efficient and cooler won me over and I went from trying to find one without to only shopping for one with the Tier 4 final. I do have little doubt thought that at some point it will throw some sort of code that will have to be investigated, but again unless I am wrong I believe there is a five year warranty on emissions systems. Now with respect to the 4 cylinder Deere engine, my experience is limited to test driving these although I understand it is the same engine they use in Deere construction division. The models I tested were unbelievably smooth and quiet compared to my 3 cylinder 5065E.

 

[5030]

Far as I'm concerned the ONLY thing that Tier 4 emissions has done for me is give me DEF, which I mix with water and add to my spray rig for fertilizing my hayfields. DEF is 32% urea and deionized water. 5 gallons to 300 gallons in my spray rig makes a dandy foilar fertilizer.

If it don't smoke when I give it fuel, I don't want it.

 

[5030]

Despite what Messicks alludes to, the heavy truck engine manufacturers and the agricultrial engine manufacturers share the same electronic emissions componentry. I happen to work for a Freightliner/Western Star dealership and 85% of our shop work now, is emission component related.

When you source your componentry on a lowest bidder platform, it ultimately fails and thats where the downtime cost comes in. If it poops the bed in the field (I farm and I think about that scenario).... does the techinician come out (in the field), hook up his laptop (because thats the way you diagnose and engine today) and determine what the issue is, or does your dealer bring out a loaner unit (not always practical or doable) and take your back to the shop.... or what.

Most emissions related issues will result in the engione derating (limp home mode) or shutting down and I can afford neither whille farming.

Tier 4 might be fine for a homneowner with a CUT, but, for me, it's just not doable. I cannot afford to take a chance on equipment failure due to an emissions related event.

I'll keep my pre tier 3 tractors, thank you....

And yes, I do get my consumables from Messicks.

 

[Texasmark]

I have owned dozens of diesel units in the past 50 years and have no problems with the NH Tier 4 set up. Most diesel engines are designed to run most efficiently and at the best torque range at 85-90% throttle and when plowing, disking or shredding one should choose a gear that places the tractor in that peak torque range. If you are constantly running a diesel tractor at slow rpm's to do a certain job you most probably need a different type of machinery to do that job. Diesel tractors are designed for high torque, high rpm jobs. Match the machine to the job.

My MF 35, Perkins Diesel 1000 rpm peak torque, 1800ish PTO rpm.
Ford 2000 and 3000 torque not easy to find so I don't know; PTO 1600-1800
Branson 1600 peak torque, PTO 2600.

Cubes on Fords around 150-175ish for 30-40 PTO HP, naturally aspired, direct injection 4 and 3 cyl.
Cubes on Branson 200 for 57 PTO HP, nat. asp. and DI 4 cyl.