Emissions devices installed on the 2.2

[torque780]

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Does anyone know what emissions devices will be installed on these engines in the U.S. markets?

I really want to know if these emissions controls will incorporate urea pellets in an exhaust catalyst device. Most other bluetec and clean diesel manufacturers in 2010 will have some variation of this which will require periodic replacement of the urea pellets. I'm not too keen on having a exhaust restrictions on a turbocharged engine. Especially if they require replacement at 12,000 mile intervals from what I've heard.

Does anyone know if this will be the case?

[gnorthern]

My question is what is the problem with exhausts on a turbocharged engine?

My comment is just a concern that the urea comments may be difficult to replace. I would hate to deal with something that needs to changed that often if it is a hassle. But urea pellets are so cheap that I cannot imangine much of a cost (urea is a form of nitrogen fertilizer that can be absorbed by trees but not by a lot of plants).

[Duluth Diesel]

I'm not thrilled about the urea systems, but I think we're going to see most diesel offerings in the U.S. come with urea injection for a number of years until they find a better emissions solution. The issue I have with urea is not only having to constantly buy and fill the tank, but the stuff freezes. How is this going to work in the winter?

-Chuck

[dieseldude]

Also, anyone know how urea pellets will impact straight vegetable and biodiesel systems?

[gomjabber]

I have done some searching on the internet to try and find how they plan on keeping these urea tanks from freezing solid. I can't find squat. I think I am just going to call the local Mercedes or BMW dealer and see what they are currently doing about it.

[blue7.3]

My TD doesn't really have many emissions controls on it aside from electronic injection, but from what I've read of the urea injection systems in both foreign and domestic "clean diesel" vehicles, the holding tank (it is a liquid solution injected after combustion) is heated. The refill rate, hence the holding tank, is supposed to be sized so they need re-fill @ recommended oil change intervals.
Most of these engine systems also use a catalytic converter and particulate trap in the exhaust system. The particulate traps (in the Fords at least) have been problematic as they go into "regen" often and use a fair amount of fuel to burn-off the soot. -Results in poor fuel economy (relatively speaking for a 7000+ lb truck).
Regarding biodiesel, the new Ford 6.7 coming out is advertised to be able to run up to B20, so I assume all systems are compatible.
Hopefully Mahindra has been taking notes, but I agree w/ Duluth, I'm fairly certain it will have urea injection.

-pete

[Joe Callimachus]

Search for Diesel Exhaust Fluid, or Selective Catalytic Recuction It's what they are calling urea.


From the Facts About Scr Site

Diesel Exhaust Fluid is subject to freezing at the lowest temperatures. For example, Diesel Exhaust Fluid (made up of a 32.5% urea solution) may freeze at temperatures at or below 12° F. Although this temperature is encountered in colder climates during the winter season, it has not proven to be a problem for SCR-equipped trucks. Freezing does not impact its functionality and Diesel Exhaust Fluid is easily thawed within moments by the warmth of the engine.

Some automotive-grade urea producers are working on non-freezing additives and technologies. In the meantime, equipment systems are being developed and will be used to ensure that Diesel Exhaust Fluid thaws quickly. In fact, the EPA sees no problem in allowing it to reheat in the morning using the warmth of the engine when the truck is started.




From the

[gomjabber]

Thanks for the info Joe, I had not seen that.
I guess I am amazed that the EPA doesn't see a problem with it. On those 5 degree days sitting all day in the parking lot won't be a problem.

[blue7.3]

Just read that the new HD Dodge Cummins diesel does NOT use Urea injection. So maybe Mahindra will follow that path...?
-pete

[pee wee]

If you read transcripts from interviews with J. Perez (back when he was talking to the public) he says it is a urea injection system that the Mahindra will use, and that they were trying to work it where the refill would coincide with regular maintenance mile posts. The refills are to be provided at no additional cost to the truck buyer, at least during the coverage period.