Here's an interesting article I found today about the upcoming 2010 emissions standards and Urea injection:

Everything You Wanted to Know About Urea But Were Afraid to Ask - PickupTrucks.com News

Facts About SCR

Could be making its way to a diesel near you?

 

scary to say the least.

 

It's not that scary. I've been testing this technology since 2000. It will do everything they say it does and the best part about it is the return of decent fuel economy.

 

so will the new truck have a dpf and urea?

 

Yes, they will have both. The dpf will likely regenerate passively more often that actively.

 

ok that makes sense then, not as many forced regens

 

Making ammonia in your exhaust is that like going from R12 to134A and a warning on the can that this stuff will kill anything big enough to die.

 

If the system is working properly, ammonia will never be released to the atmosphere. The by-product of this technology is nitrogen gas and water.

 

Nothing works perfect though. So I wonder how they will deal with failures.

 

I hate to say it, but if this compound is publicly, easily, and readily available, there's gonna be some Evil Do'er (thanks GWB ) that will use it for ill intentions.

So eventually, You'll have to have some kind of security clearance, monitoring system, or other regulation to buy it?

 

It's already available out there. Not exactly the same thing, but all the components are available and very easy to get your hands on. Rather or not someone could fashion it into a bad thing will depend on their knowledge, but that's the case really no matter what your talking about.

 

Simple. Two ways: 1) severely reduced engine power. 2) complete engine shutdown.

If there's a failure in the system, or urea levels get too low, the ECM will reduce engine power (as a "punishment" to the driver, I've been told), to keep the engine within limits. If the operator continues operation, with the failure still present, the engine will simply refuse to start, or shut down.

Mandated by the EPA for 2010.

-blaine

 

Yeah, I know. But they've restricted access to the most commonly available sources.

 

Blaine is correct. There will be driver "inducement" features that are part of OBDII.

 

About the only ill intention you could do with it is paint obscenities in your neighbors yard with it. It will kill grass like Roundup at 32.5% concentration. Dilute it and it will grow grass like crazy!