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Old Dec 10, 2008 | 06:10 PM
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SCR and Urea

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?
 
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Old Dec 10, 2008 | 07:07 PM
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scary to say the least.
 
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Old Dec 12, 2008 | 06:50 PM
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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.
 
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Old Dec 13, 2008 | 10:41 AM
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so will the new truck have a dpf and urea?
 
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Old Dec 13, 2008 | 03:34 PM
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Originally Posted by Bowie
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.
 
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Old Dec 15, 2008 | 04:24 PM
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ok that makes sense then, not as many forced regens
 
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Old Dec 22, 2008 | 11:15 AM
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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.
 
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Old Dec 22, 2008 | 07:56 PM
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Originally Posted by starmilt
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.
 
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Old Dec 23, 2008 | 07:16 PM
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Nothing works perfect though. So I wonder how they will deal with failures.
 
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Old Dec 24, 2008 | 05:15 AM
  #10  
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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?
 
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Old Dec 24, 2008 | 09:08 AM
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Originally Posted by fonefiddy
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.
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.
 
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Old Dec 24, 2008 | 12:24 PM
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Originally Posted by Bowie
Nothing works perfect though. So I wonder how they will deal with failures.
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
 
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Old Dec 24, 2008 | 02:18 PM
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Originally Posted by tex25025
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.
Yeah, I know. But they've restricted access to the most commonly available sources.
 
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Old Dec 25, 2008 | 09:15 AM
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Originally Posted by Frankenbiker
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

Blaine is correct. There will be driver "inducement" features that are part of OBDII.
 
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Old Dec 25, 2008 | 09:22 AM
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Originally Posted by fonefiddy
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?

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!
 
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