02-25-2007, 10:11 PM
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#11
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Supporting Member
Join Date: Sep 2006
Posts: 1,779
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repete86 -
Quote:
Originally Posted by repete86
I would have been doing this with the intention of reducing emissions. I'm going to have to do more research to find a way to fix this problem. My mileage improvements have been done for environmental, not economic reasons.
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My goal is to comply with clean emissions also. The law, in the case of California, is pretty strict. If I can comply with California emissions, then I am good to go.
Lean-burn, from what I understand, reduces HC and CO emissions. It's the NOx emissions that go up. NOx emissions is the bain of diesels. I think that the key to Honda's new clean diesel is the emissions scrubber :
Honda Previews Next-Generation Engine and Power Technologies
http://www.greencarcongress.com/2006...previews_.html
Quote:
Next-Generation Diesel Engine. Honda’s new diesel, targeted for introduction in the US by 2009, will not use a urea-based SCR system to meet the US Tier 2 Bin 5 standards. (Earlier post.) Instead, it is using a combination of an advanced combustion management (PCCI) and a new NOx catalytic converter, about which it provided more details.
The new catalytic converter utilizes a two-layer structure: one layer adsorbs NOx from the exhaust gas and converts a portion of it into ammonia, while the other layer adsorbs the resulting ammonia, and uses it later in a reaction that converts the remaining NOx in the exhaust into nitrogen (N2).
Ammonia is a highly effective reagent for reducing NOx into N2 in an oxygen-rich, lean-burn atmosphere—urea-based SCR system derive ammonia from the urea.
Honda’s ability to generate and store ammonia within the catalytic converter enables the creation of a compact, lightweight NOx reduction system for diesel engines. The system also features enhanced NOx reduction performance at 200–300ºC, the main temperature range of diesel engines.
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However, please don't hesitate to *test* the mod  .
CarloSW2
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