DIY_EFI Digest Friday, July 23 1999 Volume 04 : Number 430 In this issue: DIY_EFI Digest V4 #403 switching O2 sensor specifications See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- Date: Thu, 8 Jul 1999 15:00:00 -0400 From: DIY_EFI-Digest-Owner@xxx.edu (DIY_EFI Digest) Subject: DIY_EFI Digest V4 #403 DIY_EFI Digest Thursday, July 8 1999 Volume 04 : Number 403 In this issue: Re: A/F by volume Re: req: lambda probe model M6811DIS Disassembler See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. - ---------------------------------------------------------------------- Date: Thu, 8 Jul 1999 10:59:08 -0700 (PDT) From: Mark Wilcutts Subject: Re: A/F by volume Totally depends on what temperature and pressure you are looking at. For reference, density of air is 1.20 kg/m^3 at 20 deg.C and atmospheric pressure. Stoichiometric mixture is 14.2-15.2 kg air per kg fuel, depending on fuel composition. Density of gasoline is between 732 and 752 kg/m^3, depending on season and grade, at 60 deg. F. You can do the math from there... On Sun, 4 Jul 1999, DIY_EFI Digest wrote: > From: "Dave (G6ZKC)" > > Hi All, > I'm I right in thinking that A/F by volume is something 10,000:1 = > ? i.e 10,000 cc air to 1 of gas? - ------------------------------ Date: Thu, 8 Jul 1999 11:07:44 -0700 (PDT) From: Mark Wilcutts Subject: Re: req: lambda probe model It's an electrochemical cell that depends on the concentration of oxygen on either side of the ceramic electrolyte. Redox reactions on the platinum surfaces of the probe influence the voltage to a great degree as well. Look back in the archives for May, there was some good discussion of this. On Tue, 6 Jul 1999, "Alfieri, Maurizio" wrote: > Is there someone who knows an equivalent electric circuit for a lambda > probe? (i mean the switch characteristic probes, the ones installed on > serie veichles to feedback injection, not the linear ones) > Or some parametric model? >   > How can they read rich exhaust if they are sensitive to O2? > Where does this residual O2 come from? - ------------------------------ Date: Wed, 07 Jul 1999 14:00:09 -0500 From: Donald Whisnant Subject: M6811DIS Disassembler Hi DIY'ers... Back a couple of years ago, I offered free copies of my 68HC11 code-seeking disassembler (since GM uses Motorola processors almost exclusively) and have had many people request a copy... At that time, I had no instruction manual written... Recently, I've finished the manual and have posted a new ZIP of the disassembler on my website for all to download, along with some Motorola documents... Soon I'll also have Alan Baldwin's AS6811 assembler (the assembler my disassembler was targetted for) online as well... I am also working on writing several new versions of the disassembler to overcome the limitations of this DOS 16-bit version... Those will be posted when they become available... You can read about those versions on my site... To download the disassembler goto: http://home.midsouth.rr.com/dewtronics (all lowercase) Once there, goto the downloads page... There will be a link for downloading the disassembler... The link will take you directly to my machine where I have the file (we have dynamic IP's so you must go through this front-end)... Because of the IP's, you can bookmark the front-end page on midsouth.rr.com, but don't bookmark anything on my machine directly, as they will be invalidated when our IP's change... ... If you have problems contacting the machine, try later -- RoadRunner cable modems have problems quite often (usually a major crash once every 2-3 weeks!)... I also ask that you fill out the online form to "register" -- I enjoy tracking where my programs go -- so far this one is in over 12 different countries! ... You don't have to register if you don't want to, but I would prefer it and any information submitted will be kept completely confidential... You can also "vote" for versions that don't exist yet to help determine which versions should have top priority... While there, feel free to browse the rest of the site -- though much of the site is still under heavy construction and is very incomplete... Enjoy... Donald Whisnant dewhisna@xxx.com - ------------------------------ End of DIY_EFI Digest V4 #403 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. A non-digest (direct mail) version of this list is also available; to subscribe to that instead, replace "diy_efi-digest" in the command above with "diy_efi". ------------------------------ Date: Fri, 23 Jul 1999 10:22:38 -0500 From: Jason Haines Subject: switching O2 sensor specifications I am trying to find technical information on response times, switching rates, lean to rich and rich to lean transition times, etc. and the variables that effect them (temperature, pressure etc.) on switch type O2 sensors made by AC, NGK and Bosch - anyone have any recommendations on where I could find this information? I have already gone through the SAE papers and have not found a lot. thanks, Jason ------------------------------ End of DIY_EFI Digest V4 #430 ***************************** To subscribe to DIY_EFI-Digest, send the command: subscribe diy_efi-digest in the body of a message to "Majordomo@xxx. 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