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From: [email protected] (Kumaravel Natarajan)
Subject: Re: Dirty Diesels?

[email protected] (Horace Dediu) writes:

>In article , [email protected] (Kumaravel Natarajan) writes:
>|> I heard the diesels are considered cleaner-burning than
>|> gas engines because the emit less of: Carbon Monoxide,
>|> Hydrocarbons, and Oxides of Nitrogen.  (CO, HC, NOX).
>|> 
>|> But they can put out a lot of particulate matter.  I heard
>|> something about legislation being discussed to "clean up
>|> diesel emissions".  Is there anything in the works to
>|> install "scrubbers" for diesels?  How about the feasibility
>|> of installing them on trucks and cars?  Would it be any
>|> different than a catylitic converter?  I'd assume easier,
>|> since we're removing particulate matter instead of converting
>|> gasses.  Let's hear people's opinions...

>This really bugs me.  The emissions of diesels are the cleanest of any vechicle,
>but they are considered so polluting that they are banned in passenger cars
>in California.  What a bunch of crap.  Diesel is the fuel of choice for 
>enviromental benefit in Europe while here it's illegal for the same reason.
>
>The particulates are nothing but carbon.  They are just an annoyance at worst.
>Nothing beats the diesel cycle for efficiency and emissions, torque or engine
>durability.  It's also cheaper.

Just to clear things up (as to why I posted the question that way)...
I was debating with a co-worker about diesels.  I claimed they were
cleaner-burning than gas engines.  He said the extra "junk" put out by them
was offset by the savings in greenhouse gasses.   I made all the SAME claims
you did.  But, one question of his was what about the carbon?  I said it
was harmless, but he wanted to know how to get rid of it.  I suggested
scrubbers.  (I figured it would be no harder or more expensive to install
than "cats".)  Does there exist any designs for a scrubber?  (I'd like
to know just to answer his final question.)  I convinced him that diesels
are cleaner otherwise.

BTW, (I named my subject "Dirty Diesels" because I knew it would get a reaction
out of people who knew they were cleaner than gas engines and that they'd
read it...)
-- 
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-- Vel Natarajan  [email protected]  Motorola Cellular, Arlington Hts IL  --
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