DIY_EFI Digest Monday, 2 December 1996 Volume 01 : Number 367 In this issue: [Fwd: Electronic Dynos] [admin] List services (automated monthly post) Re: [Fwd: Electronic Dynos] Re: crankshaft/flywheel encoder patterns VW Digifant EFI Re[2]: FORSALE: Engine Management System, Haltech E6 general questions [none] Subaru Fault codes See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: Doug Robson Date: Sun, 01 Dec 1996 20:07:52 +1000 Subject: [Fwd: Electronic Dynos] This is a multi-part message in MIME format. - --------------5C57581C413F Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit - -- |===============================================================| | When I die, | | I want to go in my sleep, like my grandfather, | | not screaming like the passengers in his car. | |---------------------------------------------------------------| | Doug Robson mailto:doug@xxx.au | | mailto:Doug.Robson@xxx.com | | Sydney, Australia http://www.cia.com.au/doug | |---------------------------------------------------------------| | Club Car Racing Register of NSW | Thank God | | 1992/93 Under 2 litre State Champion | for | | http://www.cia.com.au/doug/ccrrnsw.html | Gravity | |===============================================================| - --------------5C57581C413F Content-Type: message/rfc822 Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-ID: <32A158C8.41EA@xxx.au> Date: Sun, 01 Dec 1996 20:07:04 +1000 From: Doug Robson X-Mailer: Mozilla 3.0Gold (Win95; I) MIME-Version: 1.0 To: diyefi Subject: Electronic Dynos Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Ok so who want to discuss writing a program to convert the EMF against an engine dyno to Horspower and torque. is it easy or am i silly regards - -- |===============================================================| | When I die, | | I want to go in my sleep, like my grandfather, | | not screaming like the passengers in his car. | |---------------------------------------------------------------| | Doug Robson mailto:doug@xxx.au | | mailto:Doug.Robson@xxx.com | | Sydney, Australia http://www.cia.com.au/doug | |---------------------------------------------------------------| | Club Car Racing Register of NSW | Thank God | | 1992/93 Under 2 litre State Champion | for | | http://www.cia.com.au/doug/ccrrnsw.html | Gravity | |===============================================================| - --------------5C57581C413F-- ------------------------------ From: jsg (John S Gwynne) Date: Sun, 1 Dec 1996 06:10:08 -0500 Subject: [admin] List services (automated monthly post) This message is post monthly as a reminder of the available list services. For help: Send "help" to Majordomo@xxx. To post: Send to "[list name]@xxx.edu" To subscribe: Send to Majordomo@xxx.edu subscribe [list name] [your email address *only* if different than your "From" address] To unsubscribe: Send to Majordomo@xxx.edu unsubscribe [list name] [your *registered* email address if different than your "From" address] The archive to each mailing list is available through the following sources: 1) WWW. http://efi332.eng.ohio-state.edu/ 2) ftp. ftp://efi332.eng.ohio-state.edu/ 3) Majordomo. Send "index [list name]" to Majordomo@xxx. You will find a file "archive_date_index" whose contents show the period covered by each of the archive files "archive_num_*". Digest mode is available for each mailing list. Send "lists" to Majordomo for a listing a mailing lists served. To switch to the digest mode, unsubscribe from the regular list and then subscribe to the digest version (i.e., diy_efi-digest). WWW sites: archive http://efi332.eng.ohio-state.edu/ diy_efi http://www.cpsc.ucalgary.ca/~fridman/diy_efi efi332 http://www.iris.swin.edu.au/~aden/efi332/ (mirrored at http://efi332.eng.ohio-state.edu/mirror) Other related sites: http://devserve.cebaf.gov/~bowling/ http://spbted.gtri.gatech.edu:80/hpe/hpe.html Please send information to be added to this posting to jsg@xxx. John ------------------------------ From: Mazda Ebrahimi Date: Sun, 01 Dec 1996 12:12:50 -0500 Subject: Re: [Fwd: Electronic Dynos] Doug Robson wrote: > > -- > |===============================================================| > | When I die, | > | I want to go in my sleep, like my grandfather, | > | not screaming like the passengers in his car. | > |---------------------------------------------------------------| > | Doug Robson mailto:doug@xxx.au | > | mailto:Doug.Robson@xxx.com | > | Sydney, Australia http://www.cia.com.au/doug | > |---------------------------------------------------------------| > | Club Car Racing Register of NSW | Thank God | > | 1992/93 Under 2 litre State Champion | for | > | http://www.cia.com.au/doug/ccrrnsw.html | Gravity | > |===============================================================| > > --------------------------------------------------------------- > > Subject: Electronic Dynos > Date: Sun, 01 Dec 1996 20:07:04 +1000 > From: Doug Robson > To: diyefi > > Ok so who want to discuss writing a program to convert the EMF against > an engine dyno to Horspower and torque. is it easy or am i silly > > regards Hi Doug, I'm not an electrical engineer, but I think this is what you're looking for: EI = T*2*Pi*n/60 or T= (60*E*I)/(2*Pi*n) where: E is voltage (in Volts) I is current (in Amps) T is torque output (in Newton - Meters) n is speed of rotation (in RPMs) Pi = 3.14159 An alternative method to measuring torque is using a load cell, which is comprised of two strain gages. While the generator is supported by its bearings, the load cell is the only memberane that keeps it from spinning. You can get a pretty accurate reading with a load cell within 0.5%. This is the method most water brake dynos use. Best Regards, Mazda Ebrahimi ------------------------------ From: sdean@xxx.edu (Steve Dean) Date: Sun, 1 Dec 1996 12:38:07 -0400 Subject: Re: crankshaft/flywheel encoder patterns >can anyone out there tell me what encoder patterns people are using >(especially on production engines) and what sensors are used also? > >ie: > >Ford EEC-4's, 36-1 pattern, inductive crank sensor, hall effect cam >sensor. > >I'm trying to find out what's out there and how common-place 60 tooth >encoders are. (trying to justify a 60 tooth design). > >thanks (in advance) for your help > >Andrew Rabbitt >Orbital Engine Company Andrew: I've seen 16 teeth on cranks, with a Hall effect sensor.... Deano sdean@xxx.edu http://www.engin.umd.umich.edu/~sdean/ ------------------------------ From: markh Date: Sun, 01 Dec 1996 20:51:09 +0100 Subject: VW Digifant EFI Hello, My name is Mark and I am working on a engine managament system based on the VW-Digifant, it's a EFI from a '92 8v GTi with a 68HC11 microcontroller inside. My problem is that I don't know how the look up tables are build up and where the look-up tables are staying in the EPROM (256 K). I am very interested in all info about the Digifant EFI, my idea is to make the Digifant PC configurable via a RS232 connection. Please HELP me !! Thanks, Mark. ------------------------------ From: dzorde@xxx.au Date: Mon, 02 Dec 96 08:20:19 Subject: Re[2]: FORSALE: Engine Management System, Haltech E6 Jeremy, If you still have the system, a mate of mine is very interested in the full set-up you have for his Fiat (throttle bodies+Haltech+all the rest you were selling with it), send me your phone number (he doesn't have email) where he can reach you. We're located in Perth, so shipping isn't too bad. Dan dzorde@xxx.au ______________________________ Reply Separator _________________________________ Subject: Re: FORSALE: Engine Management System, Haltech E6 Author: diy_efi@xxx.edu at INTERNET Date: 12/1/96 2:17 PM Hello everyone, I just typed up the first few pages of the Haltech E6 manual (for some people to look at). Anyway, I thought I would post it here for all to have a look at. PS. if anyone else is interested in buying it, just send me a note. - ----------------------------------- Introduction to the Haltech E6 ============================== Thank you for purchasing a Haltech E6 system. We beleive that the quality, versatility and affordability of the Haltech E6 make it the best programmable engine computer on the market for a wide range of applications. The Haltech E6 system optimises performance with the following capabilities: * ignition control * fuel control * idle speed control * closed loop capability The Haltech E6 is a universal fuel injection computer designed to control electronic fuel injection systems and ignition systems on most ignition type engines. One basic design can control four, six, or eight cylinder engine. It does not matter if the engine is naturally aspirated or turbo or supercharged, the Haltech E6 can control it. The Haltech E6 is more than a programmable fuel injection computer - it provides for data logging of engine data and allows access to engine data in real time for diagnostics. These characteristics can be vital to maximize performance and trouble-shoot problems in the vehicle. Typical Applications ==================== The Haltech E6 has many applications including * Control system for conversion from carburetion to fuel injection * Control of fuel injection on modified engines (the vechicles standard computer is designed to control a standard engine and is not suitable to control modified engines) * Race and rally applications of all descriptions * Use in kits by kit manufacturers * Design and development purposes * Education use by technical colleges and unversities * Orignial equipment cars and motor cycles * For use in cars, motor cycles, boats, jet skis and outboards The haltech is being used for all of the above applications though out the world including USA, Japan, Germany, UK, Australia, SE Asia, New Zealand and other countries. The Haltech E6 system of programming has been described as "10 times easier to program that any other system". The reason is that the patented Haltech system virtually eliminates the input of numbers. You simply manipulate graphics in the form of bar graphs by pressing arrows to increase or decrease at that particular load point. The process is repeated for all load points in each rev range. The values are shown numerically but very few inputs of numbers are required. Programming of the ignition time, warm up and accelorator cycle is just as easy. The engine can be programmed on the dyno or on the road and the engine will not even hesitate as each change is made! This instruction manual has been written to minimise the time it takes to get the Haltech E6 installed and running on your engine. The QuickMAP function and the provision of a library of ignition time MAPS makes setting up the Haltech E6 even quicker! Time taken reading this manual will save you many hours as your become familiar with the many time saving functions available. Haltech E6 Specifications ========================= System Programming Requirements - ------------------------------- * Computer IBM compatibles including laptops with 512k memory or more * Disk Drive 3 1/2" or 5 1/4" floppy disk drive * Serial Port Standard RS232C port 9 pin D connector 25 pin cable supplied on request Power Requirements - ------------------ * Power Source 8.6 to 16 Volts * Power Consumption Haltech ECU: 270mA at 12 Volts Injector Load: proportional to duty cycle (typical .6amps per injector) Input Sensors - ------------- * Manifold Pressure Sensor -100KPa to 0KPa (this is the one I have) -100KPa to 100KPa -100KPa to 200KPa * Programmable General Purpose Input (NOS etc) * Temperature Sensors Temp. dependant resistor type. Maximum Operating Range Engine Temperature -40 deg F to 212 deg F -40 deg C to 100 deg C Intermittent 212 deg F to 257 deg F 100 deg C to 125 deg C * Throttle Position Sensor Rotary potentiometer off throttle shaft * Engine Speed Pick-ip Tach Adaptors avaible to suit most applications * Optional Heated Exhaust Oxygen Sensor Haltech E6 ECU Outputs - ---------------------- * Injector Drivers 1 to 8 multipoint injectors can be directly driven from the ECU * Idle Air Control * Ignition Drive Out * Programmable General Purpose Output (NOS etc) * Fuel Pump Power Fused 20 Amp power switch circuit automatically controlled by ECU which will power standard EFI fuel pump directly Adjustable Features - ------------------- * Fuel and Ignition Control 18 speed ranges of 500 RPM separation with 32 load points per range * Programmable General Purpose Output (NOS etc) * Real Time emulation Haltech E6 can be programmed while the engine is running * Fuel Cut on Decelaration Fuel may be cut on deceleration with throttle closed * Datalog Engine parameters are saved to IBM memory eight times per second for future recall * Closed Loop * Battery Voltage Correction * RPM Limit * Idle Speed Strategy * Switchable metric or US units on all displays * Adjustable Accelerator Pump * Engine Warm-Up Cycles Physical Specifications - ----------------------- * ECU Dimensions Length: 168mm (6 5/8") Width: 145mm (5 5/8") Depth: 41mm (1 5/8") * Weight ECU: 740g (1 1/2lb) Loom: 2.03kg (5lb) Sensors: 170g (5.3oz) Shipping Weight 3.2kg (7lb) (including manual/package) Casing - ------ Black anodised aluminium with built in cooling fins/mounting brackets - ----------------------------------- regards, Jeremy, Sydney AUSTRALIA http://www.st.nepean.uws.edu.au/~jpronk/ '83 AlfaSud Ti (Haltech E6 efi) ------------------------------ From: Ken Mayer Date: Sun, 1 Dec 1996 23:07:33 -0500 (EST) Subject: general questions Hello all, I'm new to the list. I have a 1980 Dodge Ramcharger 4x4 that I plan to do major work on over the next year. It has a 360 engine, stock cam, 4 speed manual transmission and 4wd. Right now I still have the factory Carter TQ carb (4 barrel, spread bore, vacuum secondary), and I'm thinking about replacing it with a throttle body injector system. The carb and ignition are mechanical (no computer). I'm in New Jersey, so I only have to meet federal emissions. What's available in the way of a bolt-on system? I'd like to keep the factory intake manifold if possible. Is there such an animal as a spread bore TBI? I've heard some bad things about the Holley system, and I understand it's a square bore body. Any suggestions as to a complete system or components? Also information on suppliers would be appreciated. Thanks. Ken :-) ------------------------------ From: Ashe@xxx.au> Date: Sun, 1 Dec 1996 13:17:00 +0000 Subject: [none] >>I'm wanting to put fuel injection (probably a GM 2.5L TBI unit)= on >>my 4cyl. 22R toyota motor. > > Want the easy way out? I would just go with a complete= setup from a >22R-E motor from a Celica... There are enough of them around...= If you >wanted more than that, go with the 22R-TE computer, injectors= and mabye >unit. No need to worry about interfacing the signals from the= GM unit, you >can have the (actually rather reliable) toyota unit that will= nit perfectly >in place with no fabrication. > >Scott Look guys, I'm in kinda the same predicament as the originator of this= query. You fellas are way too up in the clouds for me. Does= anyone have any experience with a regular (ie major brands like= Haltech, Injec, Motec etc etc) aftermarket programmable efi= system and Fiat twincams? I'm great with swinging a spanner and a whiz with user-type= software around the office but electronics really faze me. Any suggestions warmly received. Greg 80 Corolla SR-5 Liftback 13T-U http://www.cen.uiuc.edu/~ssdavis1/index.htm ------------------------------ From: firkins@xxx.au (John Firkins) Date: Mon, 2 Dec 1996 18:54:07 +1000 Subject: Subaru Fault codes Thanks to Doug & Chris Unfortunately, it turns out that the fault codes were misleading. I've traced the problem to a worn bushing in the torque converter, which allows the mounting bolts to come into contact with the adaptor plate. This contact was enough to be picked up by the knock sensors, fooling the cpu into believing the engine was about to self destruct! Cheers John Firkins ------------------------------ End of DIY_EFI Digest V1 #367 ***************************** 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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