Date: Sun, 12 Jun 2011 05:17:15 -0700
Reply-To: Don Hanson <dhanson928@GMAIL.COM>
Sender: Vanagon Mailing List <vanagon@gerry.vanagon.com>
From: Don Hanson <dhanson928@GMAIL.COM>
Subject: Re: The Dreaded Emissions test
In-Reply-To: <BAY152-ds3469BD56943779A711808A0660@phx.gbl>
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Thank you, good explaination.
I often question the intelligence of our government's attempts to fix or
modulate some of the problems that we have. The way the US and the various
states have legi$lated in regards to motor vehicles is particularly hard to
believe, at times.
I will say that California HAS reduced their smog problem since I lived
there full time many years ago. They just seem to go about it thinking
mainly about what the big business interests say they will accept. With all
the money that gets spent on smog legislation and enforcement and 'band-aid'
fixes like Cat converters and EGRs, a more Euro approach might have been a
whole lot more sensible...
A decent public transport system, nation-wide. Then, when we run out of
petroleum, we would have an already existing way to get to work or go visit
Grandma. Small effective cars like are sold in the rest of the world..that
would help too. And perhaps a little birth control...too many people is
really the cause of all our problems, but no one dares mention that.
It's a fact that the average speed of each automobile on the LA freeway
system is just 18mph...Millions of individual autos, day after day, going
back and forth at ~18mph, idling in Grid Lock...That makes no
sense....except to the oil lobby, I guess.
Don Hanson
On Sat, Jun 11, 2011 at 10:58 PM, Dennis Haynes <d23haynes57@hotmail.com>wrote:
> The emissions testing program does not look at or compensate for vehicle or
> engine size. As for volume per mile only NOx can be relevant for the
> testing
> program. The program is only testing to see to see if the emissions
> equipment is functioning or not. Again just looking for the gross
> polluters.
>
>
> Many VW products, especially the Vanagon, often has difficulty meeting some
> of these tests even when all is well due to the cost saving measures of
> using as little emissions reduction equipment as possible. Most notable is
> the small catalytic converters and lack of EGR.
>
> Obviously large vehicles especially Diesels put out a lot more
> pollution/mile than smaller ones.
> One of the primary creators of smog and low level ozone is the creation of
> NOx as part of the combustion process. This is also the hardest to control
> as most things that increase efficiency increased NOx. The is why our
> engines are lower compression and geared to reduce the stress/or load on
> the
> engine. This is why engine conversions can be a problem with emissions
> compliance. VW most likely didn't use the inline gas engines for the
> Vanagon
> due to the NOx emissions. The water boxer has a number of design features
> reducing NOx and being able to work under a load longer without damage,
>
> Dennis
>
>
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