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- Newsgroups: alt.hotrod,wiz.hotrod
- Path: sparky!uunet!rsiatl!hotrod
- From: hotrod@dixie.com (The Hotrod List)
- Subject: Re: Oxygenated fuel.
- Message-ID: <2thr#nd@dixie.com>
- Date: Wed, 23 Dec 92 23:53:50 GMT
- Organization: Dixie Communications Public Access. The Mouth of the South.
- To: hotrod@dixie.com
- Reply-To: hotrod@dixie.com
- Posted-Date: Wednesday, Dec 23 18:53:44
- X-Sequence: 3105
- X-Gifs-To: met@sunset.cse.nau.edu
- X-Gifs-From: ftp.nau.edu
- Approved: jgd@dixie.com
- Lines: 48
-
- In article <hlgrsnp@dixie.com> you write:
- >Bob Valentine asks about my oxygen sensor:
- >" Are you using some form of commerical unit with the 02 sensor,
- > or a home made one 8->. If it's home made, could you provide
- > some details?"
- >
- >
- >Yes, it is home made. I posted a description of it several months ago
- >here on the hotrod list; it's probably in the archives. I'll recap
- >it briefly:
- >
- >A Borg_warner OS-109 heated oxygen sensor is installed in the side
- >of a piece of exhaust pipe which slips over my tailpipe. The sensor's
- >signal is fed to an op amp buffer and then to an analog panel meter
- >which is calibrated to read from 0 to 1 volt (I used a cheap surplus
- >meter; new analog meters are outrageously expensive these days).
- >
- >Since the sensor is at the end of a long piece of pipe there is a
- >bit of lag when adjusting at idle speeds but this is easy to get
- >used to.
- >
- >The sensor is being run in the voltage generation mode. I have plans
- >to change over to constant voltage mode because that will extend the
- >AFR range over which it is useful. As it is, the AFR is pure guesswork
- >other than knowing that 0.5 volts is stoich. Maybe I'll get the
- >chance to build to build the CV circuitry over Christmas - the design
- >is done and has been waiting for me.
- >
- >BTW, I chose the OS-109 because it was the cheapest heated sensor that I
- >could get from a local discount store. If you want more details then
- >e-mail me. Our plant is shut down from December 24 thru January 3
- >so if you don't hear from me soon it will be a while :-).
- >
- >Bob Hale ...!ucsd!btree!hale
- >...!btree!hale@ucsd.edu ...!ucsd!btree!hale@uunet.uu.net
- >
- >
- >----------
- >Posted by: emory!ucsd.edu!btree!hale (Bob Hale)
-
- I'd be interested in more details - either e-mail or news posting.
-
- Thanks
-
- wstreet@netcom.com
-
- ----------
- Posted by: emory!netcom.com!wstreet (William Street)
-