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From: [e-mail] (FRED W. BACH)
Newsgroups: rec.autos,rec.autos.tech
Subject: Re: Dirty Diesels?
Date: 26 Apr 1993 12:43 PST
Organization: TRIUMF: Tri-University Meson Facility
Lines: 57
Distribution: na
Message-ID: <[e-mail]>
References: <nataraja.735341980@opal12> <[e-mail]>
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News-Software: VAX/VMS VNEWS 1.41    

In article <[e-mail]>, [e-mail] ("Erik Velapoldi") writes...
#[e-mail]  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...
#> 
# 
#VW and Mercedes have tinkered with particulate traps.  Also, VW
#uses a kind of turbocharger on their Jetta ECOdiesel that helps
#reduce particulates as well, although I don't know the
#mechanics of it.
# 
#Many diesel cars,busses, and trucks in Europe are now being
#equipped with catalysts and traps in an effort to clean up
#diesel emissions, already well below legal limits anyway.
# 
#It's a shame GM had to soil the diesel's reputation in
#passenger cars and prevent further resource devotion to
#research into making this outstandingly efficient engine even
#further ahead of gas engines in emissions.
# 
#erik

   I sure don't know what and how they measure in regards to diesel 
 motors in cars, trucks, and busses, but I think they are probably
 measuring the wrong pollutants, or at the wrong time, or both.

   I certainly find it offensive to drive behind a diesel bus or
 diesel truck and some diesel cars.  They stink!  And it's always
 roll-up-the-windows panic time when one comes by or ducks in front
 of me when I am driving with my family.

   I don't think the combustion mixture is kept under very good
 control in diesel engines, and that's why they stink.  So the 
 invisible, unsmellable pollutants are reduced in diesels.  Yeah,
 well so what!?  Someone forgot about the visible, stinky kind, and,
 as far as I am concerned, those kind are just as bad.

    I am all for de-stinking the diesel vehicles.  It'll keep the
 traffic signs cleaner, too.

 Fred W. Bach ,    Operations Group        |  Internet: [e-mail]
 TRIUMF (TRI-University Meson Facility)    |  Voice:  604-222-1047 loc 327/278
 4004 WESBROOK MALL, UBC CAMPUS            |  FAX:    [phone]
 University of British Columbia, Vancouver, B.C., CANADA   V6T 2A3

 These are my opinions, which should ONLY make you read, think, and question.
 They do NOT necessarily reflect the views of my employer or fellow workers.