:::-----Original Message-----
:::From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf
:::Of gary hradek
:::Sent: Monday, August 30, 2004 12:26 AM
:::To: vanagon@GERRY.VANAGON.COM
:::Subject: emissions data
:::
:::Jon,
:::   No numbers for you just concepts.   Most fuel
:::injection engines run about the same.   It is the Cat
:::that scrubs out the pollutants.   The nuber of valves
:::an engine has also helps clean thing up a bit.   New
:::engines have a new rating of low emission and ultra
:::low emission largely do to the newer controls.
:::None of this will change the amount of co2 emission.

Actually, that's not quite right.  CO2 emissions are a linear function of
gasoline burned, so improving fuel efficiency reduces CO2 emissions.  So
diesels are better than regular engines - but they emit a lot more
particulates and other pollutants.  That's why hybrids  - the SULEVs (super
low emissions vehicles) - are looking good these days, pending concerns
about life cycle impacts (battery disposal).  Fuel cells are worse because
synthesizing the hydrogen consumes more energy than driving a regular car
would.

Joy

*******************************************************************
Dr. Joy E. Hecht
Consultant on Environmental Policy and Information

Email:  jhecht@alum.mit.edu
Phone:  1-202-494-1162

*******************************************************************
:::-----Original Message-----
:::From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf
:::Of gary hradek
:::Sent: Monday, August 30, 2004 12:26 AM
:::To: vanagon@GERRY.VANAGON.COM
:::Subject: emissions data
:::
:::Jon,
:::   No numbers for you just concepts.   Most fuel
:::injection engines run about the same.   It is the Cat
:::that scrubs out the pollutants.   The nuber of valves
:::an engine has also helps clean thing up a bit.   New
:::engines have a new rating of low emission and ultra
:::low emission largely do to the newer controls.
:::None of this will change the amount of co2 emission.
:::
:::Long and short of it is that the larger the engine and
:::the larger the vehicle the more co2 will be emitted
:::and this is where I might begin to draw a line on
:::ethics.   If you drive a bigger vehicle than you need
:::to do the job than you have crossed the line.   I
:::really doubt that you will go to hell just make the
:::earth more like hell.   regards gary
:::Date:    Sun, 29 Aug 2004 12:41:46 -0400
:::From:    Jonathan Farrugia <jfarrugi@UMICH.EDU>
:::Subject: emissions data
:::
:::given all this talk about emissions i am interested in
:::getting some
:::emissions data.  i have always generally considered
:::that the new the
:::engine the better the engines emissions.  hence the
:::california swap
:::regulation that you can swap in a new engine but not a
:::older engine.
:::so i
:::would like to find out the emissions of several model
:::years and makes
:::of
:::volkswagens.  i have no idea where to acquire this
:::data.  i assume the
:::epa
:::site might have the data some where or it could be in
:::an emissions test
:::manual or book.
:::
:::i have always figured that engine swapping with NA
:::approved engines
:::from
:::later model cars was a good way to improve my vanagons
:::emissions.  i
:::would
:::like to see how much better my actual emission should
:::be.
:::
:::i would like to get data for the following years and
:::makes of
:::volkswagens.
:::thanks for what you can contribute.
:::
:::
:::
:::
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