Tier IV motor

[skeets]

Can someone explain to me what this is and how its different from the older motors

 

[kchampagne]

http://dieselnet.com/standards/us/nonroad.php

Here is a general discussion of the requirements.

 

[Eric McCarthy]

You can thank the federal gubmint and enviro nazies for this one. With these new emmisions standards the cost of a new tractor will go up about 10-15% more then what it is now. Not to mention the cost of diesel fuel itself is up. Knocking on the door of 4 dollars a gallon in my hood.

 

[skeets]

Man almost 4 bucks a gallon,, I wish,, Im paying almost 4 bucks a gallon for OFF ROAD,, over the highway stuff it at least 4.39

 

[hodge]

The initial cost is going to be higher, but I believe the cost of ownership is going to surpass that price. The truck industry (pickups), across the board, has struggled to turn out an effecient, trouble-free design that meets all the strict requirements. I don't see tractors as any different, especially due to the harsher conditions. Couple computer management with vibration, rough ground, heat, dust, and the fact that not every tractor owner babies their baby- it is bound to give trouble. I don't know about Kubota, but I have read where other manufacturers who have already made the leap to tier 4 are having woes.
I see a rush now to buy current tractors, and I believe that the used market is going to boom, once the tier 4 stuff hits the market.

 

[DanDan]

...I see a rush now to buy current tractors, and I believe that the used market is going to boom, once the tier 4 stuff hits the market.

I agree!

However, it is my understanding that currently the really nasty controls are on tractors/engines that are in the 40-50hp and up category.

For folks in the medium-duty market, we are dodging the bullet for now.

 

[DanDan]

Can someone explain to me what this is and how its different from the older motors

kchampagne's posted link is a good start towards understanding what it is the regulation is trying to accomplish.

To your question skeets, the big difference between a tier4 engine and an engine built prior to those specs is probably best described as emission controls.

I am certainly no expert, and will defer to others with more knowledge, but as I understand it, those emission controls come in the form of expensive computers to monitor and adjust, and additional equipment to act as scrubbers/absorbers/dilutors etc. For example, one of the strategies to reduce the tailpipe emissions is to inject urea(!?!) into the exhaust to combine with one of the 'nasty' elements and thus form a less nasty chemical element.

In a sense, the government is now mandating that we piss into our motors.
This run-away bureaucracy has lost site of the means and ends, IMHO.