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- Newsgroups: co.general
- Path: sparky!uunet!spool.mu.edu!agate!boulder!csn!ncar!ren
- From: ren@rap.ucar.edu (Ren Tescher)
- Subject: Re: Emissions Inspections, is new really better than old?
- Message-ID: <1993Jan6.145829.14108@ncar.ucar.edu>
- Sender: news@ncar.ucar.edu (USENET Maintenance)
- Organization: NCAR, Research Applications Program
- References: <thomasd.57.726189717@tps.COM> <1993Jan5.053556.14221@mnemosyne.cs.du.edu> <32936@scicom.AlphaCDC.COM>
- Date: Wed, 6 Jan 1993 14:58:29 GMT
- Lines: 10
-
- In article <32936@scicom.AlphaCDC.COM> wats@scicom.AlphaCDC.COM (Bruce Watson) writes:
- >Be sure you bring the vehicle to normal operating temperature before
- >you have it tested, since the test assumes this and vehicles
- >have higher emissions when cold.
- I'm not a chemist, but I believe the 'catalytic' converter must
- reach a certain temperature (1000 degrees?) before catalyzing can occur.
- This would explain why a cold engine would fail emissions testing and
- lend support to the 'argument' that short trips pollute more.
- ren
- dona nobis pacem
-