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- Newsgroups: alt.hotrod,wiz.hotrod
- Path: sparky!uunet!rsiatl!hotrod
- From: hotrod@dixie.com (The Hotrod List)
- Subject: Re: DIY engine computers
- Message-ID: <llfrfsp@dixie.com>
- Date: Mon, 21 Dec 92 19:05:50 GMT
- Organization: Dixie Communications Public Access. The Mouth of the South.
- To: hotrod@dixie.com
- Reply-To: hotrod@dixie.com
- Posted-Date: Monday, Dec 21 14:05:46
- X-Sequence: 3079
- X-Gifs-To: met@sunset.cse.nau.edu
- X-Gifs-From: ftp.nau.edu
- Approved: jgd@dixie.com
- Lines: 37
-
- > -> Speed density based, with an O2 sensor for closed loop feedback. All
- > -> of the solenoids are plumbed into a single fuel rail which has a line
- > -> to run to spray bars or discs which are normally mounted in the
- > -> aircleaner.
- > Why not set the solenoid setup to run lean, then use the injector on
- > closed loop as a correction device?
-
- Maybe I was unclear, but thats how it does work pretty much. 6 solenoids,
- 2 gasoline style injectors, solenoids are a "course" adjustment,
- injectors are "fine", and I'm not sure of the actual logic used for
- the closed loop correction with the stock contoller, guess it
- depends on the flow rates of the injectors compared with a single
- solenoid to some extent. My big problems are that I have two volumetric
- efficiency curves (depending on whether or not the boost bypass solenoid
- solenoids are closed), and even then they are really strange with the
- centrifugal blower. And unfortunately the MAP sensor is internal to the
- controller and can't handle boost. (Light Bulb!) Guess I ought to
- try adapting a GM 15psig map sensor.
-
- > ----------
- > Posted by: emory!chaos.lrk.ar.us!dave.williams (Dave Williams)
- >
- >
- >
- >
-
-
- --
- Jon Lusky
- lusky@gnu.ai.mit.edu
-
- 79 Rx-7 12A/Holley 4bbl
- 67 Camaro/350/4spd (under construction)
- 89 Jeep Wrangler/258 (currently self destructing)
-
- ----------
- Posted by: emory!gnu.ai.mit.edu!lusky
-