DIY_EFI Digest Thursday, 16 May 1996 Volume 01 : Number 141 In this issue: SDS EFI New List Subscriber PIC Microcontrollers New List Subscriber PIC Microcontrollers New List Subscriber PIC Microcontrollers PIC Microcontrollers New List Subscriber New List Subscriber PIC Microcontrollers PIC Microcontrollers New List Subscriber Re: PIC Microcontrollers SDS EFI Re: New List Subscriber a/f ratio with LPG Reply to: a/f ratio with LPG RE: a/f ratio with LPG See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: "M.PENDLEBURY" Date: Wed, 15 May 1996 12:49:14 +0100 Subject: SDS EFI I'm interested in user programmable engine management systems and would like to get information on the SDS system mentioned by Cal Smith. Does anyone have an e-mail or mailing address for SDS to save the cost of phoning Canada from the UK ? Any help appreciated. Thanks, Mick Pendlebury (mp2@xxx.uk) ------------------------------ From: brewer@xxx.com (John Brewer) Date: Wed, 15 May 1996 08:41:07 -0500 Subject: New List Subscriber Hi, My name is John Brewer and I learned of this list from the "Offroad Mailing List". I am a Controls/Missile Engineer with a very keen interest in Automobiles- more specifically, making my own automobile perform more efficiently; power, torque, economy, reliability, etc. My current project which is just ramping up, is the design of a new induction system for my 1978 Toyota Landcruiser, FJ40 with the stock 253 cid straight six motor. Ultimately I hope to design an intake manifold, digital electronic fuel injection, and electronic ignition system. I plan to apply modern control theory, MIMO techniques to this project, i.e., Kalman Filters, optimal observers, LQG controllers, etc. While I am a better than average mechanic and am well versed in the theory and simulation of CONTINUOUS control systems, I have little experience in synthesizing these systems in practice and even less in digital electronics. In other words, I know all about it but can't do anything with it cause I don't know how- yet. I am fairly certain where my deficiencies lie however. I need to become familiar with programming/interfacing/using micro controller units, I don't know how to do this right now. I need to become familiar with the nuts-and-bolts of BUILDING digital control systems. My problem is that I don't know where to start. Can anybody recommend any books that might get me started here? If all goes well, I hope to have a working digital EFI system in my cruiser in a few years, one in which I can play around with the control laws and algorithms. Ultimately I might like to use some of this in a dissertation topic. THANKS John Brewer P.S. Do list members make significant use of MatLab? "Any man who would trade liberty for security deserves neither." - Ben Franklin ------------------------------ From: thoffman@xxx.net (Tim Hoffman) Date: Wed, 15 May 1996 13:59:25 GMT Subject: PIC Microcontrollers Is anyone using one of Microchip's PIC controllers in an EFI system? I'm looking around for a controller for my project and would like to talk to you if you are using a PIC. Thanks! Tim Please Note New Address: thoffman@xxx.net ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 14:07:00 UTC 0000 Subject: New List Subscriber GE Item Number: 581741 Original Msg Id: 416328 genie-postmaster response to your message Subject: New List Subscriber System: QUIK-COMM Date: Wed 15-May-96 14:07 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 14:27:00 UTC 0000 Subject: PIC Microcontrollers GE Item Number: 5119648 Original Msg Id: 403904 genie-postmaster response to your message Subject: PIC Microcontrollers System: QUIK-COMM Date: Wed 15-May-96 14:27 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 15:09:00 UTC 0000 Subject: New List Subscriber GE Item Number: 4918223 Original Msg Id: 77585 genie-postmaster response to your message Subject: New List Subscriber System: QUIK-COMM Date: Wed 15-May-96 15:09 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 15:14:00 UTC 0000 Subject: PIC Microcontrollers GE Item Number: 9441924 Original Msg Id: 196202 genie-postmaster response to your message Subject: PIC Microcontrollers System: QUIK-COMM Date: Wed 15-May-96 15:14 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 15:50:00 UTC 0000 Subject: PIC Microcontrollers GE Item Number: 3921094 Original Msg Id: 404461 genie-postmaster response to your message Subject: PIC Microcontrollers System: QUIK-COMM Date: Wed 15-May-96 15:50 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 15:53:00 UTC 0000 Subject: New List Subscriber GE Item Number: 9391344 Original Msg Id: 404507 genie-postmaster response to your message Subject: New List Subscriber System: QUIK-COMM Date: Wed 15-May-96 15:53 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 16:37:00 UTC 0000 Subject: New List Subscriber GE Item Number: 620239 Original Msg Id: 417267 genie-postmaster response to your message Subject: New List Subscriber System: QUIK-COMM Date: Wed 15-May-96 16:37 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 16:38:00 UTC 0000 Subject: PIC Microcontrollers GE Item Number: 2967777 Original Msg Id: 417278 genie-postmaster response to your message Subject: PIC Microcontrollers System: QUIK-COMM Date: Wed 15-May-96 16:38 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 17:22:00 UTC 0000 Subject: PIC Microcontrollers GE Item Number: 6391980 Original Msg Id: 405061 genie-postmaster response to your message Subject: PIC Microcontrollers System: QUIK-COMM Date: Wed 15-May-96 17:22 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: genie-postmaster@xxx.com Date: Wed, 15 May 96 17:33:00 UTC 0000 Subject: New List Subscriber GE Item Number: 3014810 Original Msg Id: 79784 genie-postmaster response to your message Subject: New List Subscriber System: QUIK-COMM Date: Wed 15-May-96 17:33 Status: 6 Message picked up by receiving system and delivered to all recipients with some exceptions. Address Delivered To: E.BEAUBIEN Address Status Message: * E.BEAUBIEN ignored - not found in Standard Address Directories ------------------------------ From: Bob Valentine Date: Wed, 15 May 1996 15:13:07 -0400 (EDT) Subject: Re: PIC Microcontrollers On Wed, 15 May 1996 genie-postmaster@xxx.com wrote: > GE Item Number: 6391980 > Original Msg Id: 405061 > genie-postmaster response to your message > > Subject: PIC Microcontrollers > System: QUIK-COMM > Date: Wed 15-May-96 17:22 > > Status: 6 Message picked up by receiving system and > delivered to all recipients with some exceptions. > > Address Delivered To: > E.BEAUBIEN > Address Status Message: > * E.BEAUBIEN ignored - not found in Standard Address Directories > Could whomever's system is sending this message out *PLEASE* fix it. I just deleted over 25 of these bogus messages. --> Bob Valentine <-- --> ravalent@xxx.com <-- "Experience varies directly with equipment ruined" ------------------------------ From: Frank_Mallory@xxx.com (Frank Mallory) Date: Wed, 15 May 1996 20:39:00 -0400 Subject: SDS EFI d> * From: "M.PENDLEBURY" d>I'm interested in user programmable engine management systems d>and would like to get information on the SDS system mentioned d>by Cal Smith. Does anyone have an e-mail or mailing address for d>SDS to save the cost of phoning Canada from the UK ? Their mailing address is: Racetech Engr. Bay G, 1007 - 55 Ave. Calgary, Alberta, Canada T2E 6W1 ------------------------------ From: David Piper Date: Wed, 15 May 1996 23:18:25 -0400 Subject: Re: New List Subscriber >While I am a better than average mechanic and am well versed in the theory >and simulation of CONTINUOUS control systems, I have little experience in >synthesizing these systems in practice and even less in digital >electronics. In other words, I know all about it but can't do anything >with it cause I don't know how- yet. I am fairly certain where my >deficiencies lie however. I need to become familiar with >programming/interfacing/using micro controller units, I don't know how to >do this right now. I need to become familiar with the nuts-and-bolts of >BUILDING digital control systems. My problem is that I don't know where to >start. Can anybody recommend any books that might get me started here? I got started with Radio Shack construction projects. Get Forest Mims lab books and start breadboarding. You will need a scope eventually, and a freq counter and synthesizer but you can build these last two which will teach you alot. Get some of the electronics magazines and start reading up and experimenting. Once you have a good basic understanding you will probably come to the same conclusion I did that its cheaper in the long run to buy a commercial EFI system. Back in '87, I had over $900 in chips and hardware while attempting to modify an analog ECU, but I learned a lot. There is a lot more literature available now, and a lot more custom chips. Why don't you try to adapt a stock system from a similar motor? TurboDave Less Maintenance, More Performance. ------------------------------ From: Bruno! Date: Thu, 16 May 1996 13:31:57 +1000 (EST) Subject: a/f ratio with LPG Hi everyone, I was wondering if it is possible to use a normal (i.e petrol) O2 sensor when running a car on LPG, as opposed to unleaded fuel. Thanks in advance, Bruno. (u933234@xxx.au) "A sewer rat might taste like pumpkin pie, but I wouldn't know cos I don't eat the filthy muthaf***a" ------------------------------ From: RABBITT_Andrew@xxx.au Date: Thu, 16 May 1996 13:24:20 est Subject: Reply to: a/f ratio with LPG the exhaust composition is nominally the same, therefore the sensor should work, however I'm not sure that you'll want to run at stoichiometric A/F ratio (which is where the conventional EGO's work best) unless of course you want to continue to use a reduction catalyst. Andrew Rabbitt Orbital Engine Company From: (Bruno!) u933234@xxx.au:smtp Date: ## 05/16/96 13:31 ## Hi everyone, I was wondering if it is possible to use a normal (i.e petrol) O2 sensor when running a car on LPG, as opposed to unleaded fuel. Thanks in advance, Bruno. (u933234@xxx.au) "A sewer rat might taste like pumpkin pie, but I wouldn't know cos I don't eat the filthy muthaf***a" ------------------------------ From: "Clinton L. Corbin : Backgrind/Gold : Pager 0544" Date: Wed, 15 May 96 23:25:16 PDT Subject: RE: a/f ratio with LPG >Hi everyone, > >I was wondering if it is possible to use a normal (i.e petrol) O2 sensor >when running a car on LPG, as opposed to unleaded fuel. > >Thanks in advance, > > Bruno. (u933234@xxx.au) Bruno, This is off the hip, but I do believe you should be able to use it. The sensor is measuring the amount of O2 in the exhaust. As I do not know exactly how the O2 sensors work, this is just an educated, no make that a mildly educated, no make that a... Oh hell, its just WAG. Clint WAG=Wilde Ass Guess! ------------------------------ End of DIY_EFI Digest V1 #141 ***************************** 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".