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- From: rat@erg.sri.com (Ray Trent)
- Subject: Re: Ethanol blended gasoline
- Message-ID: <1992Nov6.224615.15232@erg.sri.com>
- Sender: news@erg.sri.com
- Reply-To: rat@erg.sri.com (Ray Trent)
- Organization: SRI International, Menlo Park, CA
- References: <etc.> <1dbu53INN5ea@bigboote.WPI.EDU>
- Distribution: usa
- Date: Fri, 6 Nov 92 22:46:15 GMT
- Lines: 31
-
- In the referenced article, walkerr@bigwpi.WPI.EDU (Robert A Walker) writes:
- > Mt '78 Wagoneer "wow i can't believe it started" again" after
- >being driven 10 minutes and after haveing a tune up 2 months before hand
- >had 0 HC and 0.00 % CO. Believe it or not. No catalytic converter or
- >any real emissions stuff.
-
- Just another opportunity to point out that the emissions that are
- measured in "smog tests" are not the most damaging emissions (i.e.
- they don't measure ozone and NOx production). They measure the
- emissions that they measure because these are the ones that are cheap
- and easy to detect.
-
- The assumption is that if your car registers low HC and COx, it is
- tuned properly and the emissions gear is all in place, thus the nasty
- emissions will also be low, even though they aren't directly measured.
-
- The emissions that catalytic converters deal with are primarily the
- nastier O3 and NOx emissions that aren't measured.
-
- Just because your car passes "smogs" with flying colors doesn't mean
- that it isn't polluting.
-
- This may change...some companies are rumored to have developed
- potentially cheap reliable O3 and NOx detectors that don't require
- lots o' expensive and dangerous reagents.
-
- --
- "When you're down, it's a long way up
- When you're up, it's a long way down
- It's all the same thing
- And it's no new tale to tell" ../ray\..
-