DIY_EFI Digest Sunday, 7 April 1996 Volume 01 : Number 101 In this issue: Re: TEC National Semiconductor! B&S project RE: ATI Supercharging Re: ATI Supercharging RE: TEC Re: Karman Vortex MAF RE: Autronic See the end of the digest for information on subscribing to the DIY_EFI or DIY_EFI-Digest mailing lists. ---------------------------------------------------------------------- From: "Jim Staff" Date: Sat, 6 Apr 1996 10:49:02 GMT Subject: Re: TEC > begin 600 WINMAIL.DAT > M>)\^(@X/`0:0" `$```````!``$``0>0!@`(````Y 0```````#H``$-@ 0` > M`@````(``@`!!) &`&0!```!````# ````,``# #````"P`/#@`````"`?\/ > M`0```&,`````````@2L?I+ZC$!F=;@#=`0]4`@````!D:7E?969I0&-O=6QO > M;6(N96YG+F]H:6\M M9RYO:&EO+7-T871E+F5D=0``'@`", $````%````4TU44 `````>``,P`0`` > M`",```!D:7E?969I0&-O=6QO;6(N96YG+F]H:6\M M`0````,`_@\&````'@`!, $````E````)V1I>5]E9FE 8V]U;&]M8BYE;F M;VAI;RUS=&%T92YE9'4G``````(!"S !````* ```%--5% Z1$E97T5&24!# > M3U5,3TU"+D5.1RY/2$E/+5-4051%+D5$50`#```Y``````L`0#H!`````@'V > M#P$````$`````````]Q-`0B !P`8````25!-+DUI8W)O M=&4`,0@xxx.````S <$``4`"0`*``T` > M!0`!`0$@@ ,`#@```,P'! `%``D``0`T``4`'P$!"8 !`"$```!&,C1#-S8P > M14,Q.$5#1C$Q.35&,C0T-#4U,S4T,# P, #U!@$#D 8`R <``!(````+`",` > M``````,`)@xxx.[`1X`< `! > M````" ```%)%.B!414,``@%Q``$````6`````;LC`?V!#G9,\X[!$<^5\D1% > M4U0`````'@`># $````%````4TU44 `````>`!\,`0````P```!*5E! 45-) > M+D-/30`#``80-LQ!(P,`!Q#V!0``'@`($ $```!E````5$A%64%214Y45$A% > M04)33TQ55$5,64)%4U142$E325-44E5%+4A/5T5615)42$594D5!5$Q%05-4 > M0TQ/4T5)3E1(15)%04Q-3T9!1D9/4D1!0DE,25195TA)3$542$595T5210`` > M```"`0D0`0```&8&``!B!@``8 H``$Q:1G7S%*,S_P`*`0\"%0*H!>L"@P!0 > M`O()`@xxx.W`N0'$P*# > M-!+,%,5]"H"+",\)V3L7GS(U-0* !PJ!#;$+8&YG,3 S+Q10"PH58@P!8P! > M(%2P:&5Y( K "? G!4"F=!R0',!B@HQS !4!L96$>46,7,#\1L![ `Z =0A>@!T!M > M(-QO9AS #= %L&0!H ,0P&ET>2X@5QZ0(*!]'^,@'Y @00A@!4 B,6WM'+!R > M&I$CE6,$D &0"X#Q'@%D:60=`@6@'E$B\+YK'6 =H > (B(=0F\=0=T1H"$* > MA0J%(U!O(_ (8+!L9"!Y"& G0&$,P!P*>!W:#QY/P70*! % > MD"O *&9X=7IZ'+ "(!TQ('%N>F$'@"D&`"=I!& @064\>' )\ "0'[ >(&]X > MS0>19RF!(P!H("Q@'?#O)J$", -@`R!T*8 @L!%PO2#P>2+P*V ?P2M29"F > MOP= `R =H `@!" B,6X@L'\>8QJ@!" ?4 G!('$B@2#N22M@'+ `P'D>,!X@ > M)&'U),%C"L%D!1 ?L#,!(72W$\ )T05 * G "X I(S!S'($<<$5#*G,>, GP > M(/YU$; IX"%A)U,D\"6@xxx.XG!" =H & =QS1'L(# > M`#\Z`36"'4(34#R"(C)D;3T$`6DLP322+U$4L$Y$ESNH._ >X6\I@&UU,5'C > M-)(DP7!O8R<@xxx.

M@26A!C%))RG@$8 O(:\OL#-0+]0=06TC,$,(<'T`3K@1,,&X# !85\G > M0 ,`#= QY4=P=@xxx.N _PBF@1C (D"G@ > M+///'4(X0BFD-5%O8DAP"&"W!" )\ A@9T61*8!F"W!_`R!(=1]032 %0!V@ > M15<@xxx.$(P > M@3-08_ M*=$R4'@ M(S!!,I$A86\R@D2 (A!-L7(>`1& <+YP(^$O\B3!3Y%*(VHY$+\%0 /Q19,C > MY3"""X!U,\'_,/(-L!^P%S!;P#NW-)(C`/\L0"<#.$(R4 >0+8 K4F!5_TL# > M'6!A-0> `C GECZR4+/]+[!T(S!0OR!Q9-H^=# !_RJ"$\!A@"[0*>!5T55# > M!&"_,U M_TBQ+U$WX4 1;+!"T4"B'6'O*V$#@2RA*",N M-#0-\ S0 ML3DQ355@xxx.A%@!X!RT$#? M#WD;5PF ,U!S^2*P>2P4L#U!`R :T(#@xxx.3:!D#$Z,_HY%+!-?#]VW6\0 > M?G]Y&WDF0'E?>S(%H"G `W!B(BX)\& M8FI4D82?>1M218L`9SA!<2]R,S,V M/\)%(F66;' APK\=H$12/[%)@xxx.TS > M4'@%0 J%/F" !X!P__Y*!W!/W2;T,E!@PQU1$8'/@($$("3 $;!L9F;!(<#^ > M=5C)*X$D$BM2'W&4-2,PZP? 6T)R"H5S87%=X%PR_T[1.V- 0R"Q")$P\C"Q > MBJ#_(*!"@$ 0*S01<244,\-/!]\)PPJ%5%E7%G$=2&& '6#_*@(D`AT"%Z!' > MT6#%2X:=(M\#H"H"I_.4I"K' M*D G<2"A9Q\A:8+_)VZ?!A.S,P$\U!>@<186P0(`LO ```,`$! ``````P`1 > M$ $```! ```#T``0````4```!213H@ > &`````!* > ` > end What is this shit, and what real use does it have? Stop sending this!!!!!!! Turn off that beatnik option it's lame.. Jim Staff ------------------------------ From: "Jim Staff" Date: Sat, 6 Apr 1996 10:53:19 GMT Subject: National Semiconductor! Has every one checked out the National Semiconductor web page? They are by far the collest semiconductor manufacturer on the net!!! They have complete online data sheets and now you can even get samples from them online, yeah! I hate talking to some morron, repeating the part number a thousand times and even then getting rejected. At least this is fast and always right. Also it displays the manufactures suggested price so you can see just how bad of a shaft the retailer you use gives you!!!! Also is anyone interested in seeing the circuit diagram for my injector. It is complete, and I'm converting it to DXF so it's cross platform. I have it in TurboCAD format if anyone out there uses that. Thanks Jim Staff. ------------------------------ From: "Jim Staff" Date: Sat, 6 Apr 1996 11:08:16 GMT Subject: B&S project Cliff Ducharme, What were the final specifications for you project? I remeber you said you had it working but then it blew your controller? Have you found out what happened, as it's really important if it is a Briggs & Stratton problem.. Also forgot to ask if you kept the standard fly wheel or replaced it with one more like a car flywheel? Cool Beans, Jim Staff ------------------------------ From: Billy-Bob Doughnut OBE Date: Sat, 6 Apr 1996 13:26:08 +-100 Subject: RE: ATI Supercharging - ------ =_NextPart_000_01BB23BC.C6505D80 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable I'm not all that familiar with catcons, but I am pretty sure that they = are used solely for reduction of unburned hydrocarbons and combustible = products in the exhaust. After all, a catalyst by definition enhances or causes = a chemical reaction to proceed faster, or initiates a reaction under = conditions which it would not normally occur. Logic dictates that if you are = running=20 lean, there would be less combustible by-products, and the catcon would = not have "fuel" to react with, thus the internal temperature of the catcon = would be lower. (Jeez, I sound like Spock there :) If, however, you run = rich, the=20 catcon has an abundance of fuel, which would cause it to overheat and = fuse=20 it's internals. Some catcons have an auxiliary air input from the AIR = system=20 pump to provide additional oxygen to help combust unburned fuel, which = would=20 help to raise their internal temperature even more under rich = conditions. I think this is a separate issue to exhaust gas temperature, which is=20 generally higher under lean burning conditions, and lower with rich. = The=20 catcon is capable of GENERATING heat greater than the incoming EGT if it = has fuel to react with. If you were running lean, EGT would be higher, = but=20 heat generated in the catcon would be lower, and vice versa. IMHO, the=20 change in exhaust gas temperature due to rich or lean would be much less = than the change in catcon internal temperature under the same = conditions. The exhaust gasses consist mainly of the following TOXIC components = before they reach the catalytic converter: Hydrocarbons (unburnt fuel), AND Carbon monoxide, Oxides of nitrogen. Generally, a lean mixture will result in hotter exhaust gasses, = producing more oxides of nitrogen. A catalytic converter functions = between 300degc and 800degc, yemperatures in excess of 800degc lead to a = drop i catalyst activity - thermal aging - in the long run. At high = temperatures the intermediate and precious metal layers fuse together or = form large crystals (sintering or build up of mineral deposits). The = result is a reduction in surface area and a drop in activity.=20 Fresh air injection assists the post ignition thermal reaction, = resulting in exhaust fumes containing fewer hydrocarbons and carbon = monoxide. This is usually used at start up ONLY, before the cat has = reached its light off temperature (300degc). Exhaust gas recirculation is used to reduce the levels of oxides of = nitrogen in the exhaust. This happens through a reduction in combustion = temperature, out of the range where NOX can be formed.=20 Also, some controll systems are able to monitor exhaust gas temperature = by measuring the current which is supplied to the heated lamda probe in = order to keep it at opperating temperature, adjusting fueling and = ignition to compensate. - ------ =_NextPart_000_01BB23BC.C6505D80 Content-Type: application/ms-tnef Content-Transfer-Encoding: base64 eJ8+IhEMAQaQCAAEAAAAAAABAAEAAQeQBgAIAAAA5AQAAAAAAADoAAENgAQAAgAAAAIAAgABBJAG AGQBAAABAAAADAAAAAMAADADAAAACwAPDgAAAAACAf8PAQAAAGMAAAAAAAAAgSsfpL6jEBmdbgDd AQ9UAgAAAABkaXlfZWZpQGNvdWxvbWIuZW5nLm9oaW8tc3RhdGUuZWR1AFNNVFAAZGl5X2VmaUBj b3Vsb21iLmVuZy5vaGlvLXN0YXRlLmVkdQAAHgACMAEAAAAFAAAAU01UUAAAAAAeAAMwAQAAACMA AABkaXlfZWZpQGNvdWxvbWIuZW5nLm9oaW8tc3RhdGUuZWR1AAADABUMAQAAAAMA/g8GAAAAHgAB MAEAAAAlAAAAJ2RpeV9lZmlAY291bG9tYi5lbmcub2hpby1zdGF0ZS5lZHUnAAAAAAIBCzABAAAA KAAAAFNNVFA6RElZX0VGSUBDT1VMT01CLkVORy5PSElPLVNUQVRFLkVEVQADAAA5AAAAAAsAQDoB AAAAAgH2DwEAAAAEAAAAAAAAA9xNAQiABwAYAAAASVBNLk1pY3Jvc29mdCBNYWlsLk5vdGUAMQgB BIABABYAAABSRTogQVRJIFN1cGVyY2hhcmdpbmcAQQcBBYADAA4AAADMBwQABgANABoACAAGABIB ASCAAwAOAAAAzAcEAAYADQAFAAwABgABAQEJgAEAIQAAADZDRjYwNzdCQUM4RkNGMTFBQkUzNDQ0 NTUzNTQwMDAwAB8HAQOQBgCkCAAAEgAAAAsAIwAAAAAAAwAmAAAAAAALACkAAAAAAAMANgAAAAAA QAA5AIAn0zu0I7sBHgBwAAEAAAAWAAAAUkU6IEFUSSBTdXBlcmNoYXJnaW5nAAAAAgFxAAEAAAAW AAAAAbsjtDvJewf2bY+sEc+r40RFU1QAAAAAHgAeDAEAAAAFAAAAU01UUAAAAAAeAB8MAQAAABUA AABiaXNvbkBlbnRlcnByaXNlLm5ldAAAAAADAAYQiIipfgMABxDjCAAAHgAIEAEAAABlAAAASU1O T1RBTExUSEFURkFNSUxJQVJXSVRIQ0FUQ09OUyxCVVRJQU1QUkVUVFlTVVJFVEhBVFRIRVlBUkVV U0VEU09MRUxZRk9SUkVEVUNUSU9OT0ZVTkJVUk5FREhZRFJPQ0FSQgAAAAACAQkQAQAAACgHAAAk BwAA0gwAAExaRnWquNQi/wAKAQ8CFQKoBesCgwBQAvIJAgBjaArAc2V0MjcGAAbDAoMyA8UCAHBy QnER4nN0ZW0CgzN3AuQHEwKAfQqACM8J2TvxFg8yNTUCgAqBDbELYCRuZwHQNTcK9GxpvDM2DfAL VRRRC/JjAECsIEkaLRNQbxPQYwVA0CdtIG4ccCAHQAMgxnQRgAVAZmFtAxAHMOcFwAPwHYAgYx2g BaAAgNAsIGJ1BUBJHTAc4EMTUBHAdHkgcwhwZVsddB2AZSAgCsBlCoV1zRGwZCAwBvBlbCAgAhAr BcAWEXUcoGkCICBvOmYhwG4fQASgIfFoefZkA2AesHIG4AYxAHAiAP8FoAbQIdAjIAJgIHAcUSLy jnMKhQuAINIgZXgRgPklgS4gFLABgASQHTIfIP5hHqIHQBOxHzAgIA2xC4DPHnAjMgnwEYBuYweR BbG/HrAh0SThCoURcBPgaR6wzwMgFhAA0CMjdG8l8iqQ9yHxHdATwXIfIAWxKcMdoP8rQix4I6AE gSUxJRAp4yZ2fHdoLDAekB5wHlAIYGz3IgAdAh0AcgDAHVAgICRwxmMIcCfRTG9nLDApgJ8sMAGQ LtIdgwaQIHkIYN8hIiLAI6ADABkQIAqFIkDfAHAfICDhIGExxGIgcCJA9wQRJUopYC0mBiiRJREn Ii8etDG4CoURgHYgcCJm+QpQbCItAiyDHlM2kiHQtycTC4AoIW4sURPRcASQPx2gIFIjcTnOCoU3 cm930wSQJ9EoSgngeh8gH4AnIiAvwTZAaWsgcFNwJSRwazalOikn4Elm/R8gaEDhO5AuETTiNWEi wP8xUTaTNdY6BRGAJOIdMB9A/yUQKnIjYjvSHyAxNDHEKwP7MYItEW9EESDwHaElAjvQs0jxJoZ0 JwQgPbZzJ9E+UwNwOeYEIDtzRqJ1eOseAyERaSbScB9RA1InE/hBSVIgMBOzNdZOcD5g2S0FdmkN sB0wZDBULFFwb3h5ZwnwLQIg8Gz/UJAlRSOYR6811lKzPDILcP9I8SDhTiM93ydBO5ADoARg7yBh L8RE4jAZLgqFCoUfgP8dgAuAQtIEACbgLvIRsAqxPy7BW9EgQCBxLSAnZSBn/0ZxPklH5luxCoVS QT6BMrL9MUBnNsEvtTZSHzEEoDWivzAoOWRA0x5UROIn0VRFXx9bsR6wCrAlwiNxR0VOgEVSQVRJ TkdSof8doQnBLsEFwB2BJwQLgCVB8TWiRUdUNKIxkTsHBCD/O9I8LCfRQ5A000DxNUg2VP9o4jcX YIQfJFU3ZxJf8xPQ/yIAJvU6C0CmOWRREEdBRBHEc2FrUk1IT0UsKmH/UkAm4l1fPpUi8F0DWTMF sfthUzcXbSMAHpA3owqFZ8f/dBhk9lb/WKcnInKwTEJZn/8K+xqpfaVkQnS5KzIe4gQA/wVAAMAL gDLCPxQCEB1QQODBNaJUT1hJQyUyQqD/I/ACMAQgN3AikVZjICAsgv8ekHBFKQEjIDOwHuFEESgh 6jpaPEgkSigjpB2xO+FEKSx9pUFORH2lQ78kk1hxHQBNkA2wiXZPi0K/KrEjgCnRA2BSQVotR1/2 9yiSYVMd8Hg+swPwHVEWEP0gQGw0kUZBHHAoIoBMHyD/JgQ1oliDizOMXBSwhZ8oIm870CqAMHM3 YXRA8FJRM7QwMA2wZzOwJQI4ltT/REE+WEtCJ1EqkYxTl4U2Qt85oS0gKLAkUVCQaSjILKL7URAg ES02ozKRHTAzkDWx/5xgJuYVoDWxNWGUIQVAYIL/Pjo9WQeAMFBcgiUCH9GSYN8IYAQgB4Ao8TZA YZgQEaD/SkQtEFJANrIqwiKRHOALYP5ydFEFABOxS8FBQACQesLfNaIFsR9AAxAiAHVQkCNxv2iR YBIpgUKgAJAmYCkn0P9kQpAGLvQi9ibxIEEd0EdB/yExKLAlApq2RrGb5SfQWjzuRpABHpBOFGoc kSMygNHvgXE9VKcxNJFnKdWchiyG/x8gkAQ1onSJO9AHgh7hAZD7KcE1sWYH0CgxJD8khIr396ei W7Qh0HUyoyHTHaGkkcMAIKYiT05MWR8hhFf/HqJGU4UDb+KEERnQYKAFQHcjcD8RPlkolsWnkFo8 Rft0yaFScjMQC2CpFLYCIfH/PDMi8bhkIkA7kKTBI3GTD++pQycrtaMRgHA+cAYxHYD9A2B1nvGo rSVGLOJeKghgv7pCJxM+kHRCMTA20k6DQF8eoWGBgnKgcqvOQUvQb/8fICIgfMSMwR1RT4Qk4SBh /2XDLRGLAR5wBbF0vz6VKWH/B4At0AhxNbFwQwhwFhCI8f9e5yBAwyAZ0L7UJyJJwiHx/QtgbUcQ JfI3cSbxBbB8I/8tIEJgXEAxgh2hmvA+c88D+14qUWBqJYKy8jvhNaIlAv+vGC0gg5LDQS7BWi19 pRUxAgDaEAMAEBAAAAAAAwAREAEAAABAAAcwAD8ST7EjuwFAAAgwAD8ST7EjuwEeAD0AAQAAAAUA AABSRTogAAAAAMDg - ------ =_NextPart_000_01BB23BC.C6505D80-- ------------------------------ From: Frank F Parker Date: Sat, 6 Apr 1996 07:33:41 -0500 (EST) Subject: Re: ATI Supercharging On Fri, 5 Apr 1996, ARTHUR OKUN wrote: > isnt duty cycle what the ecm really looks at how about a cheap micro > controlled duty cycle meter ? > No, in the old days of 1/2 carb and 1/2 cpu, there were solenoids that ran a metering rod and that had duty cycle, buts thats not anything remotely current. Frank ------------------------------ From: Frank F Parker Date: Sat, 6 Apr 1996 07:59:57 -0500 (EST) Subject: RE: TEC On Fri, 5 Apr 1996, Fred Miranda wrote: > > An altenative to Motec is Autronic, also from Australia. I have one in my Elan. > Can be had for $1100-1200US. Software around $50 I think. > 8 inj drivers with individual trims (sequential) > control for up to 4 coils (you supply drivers) > very good acceleration enrichment control > air temp correction that seems to work (in the TEC it causes problems due to > heat soak) > the list goes on Does Autronic have a web site or email address so we can get info???? ------------------------------ From: pjwales@xxx.net (Peter Wales) Date: Sat, 06 Apr 1996 19:17:17 -0500 Subject: Re: Karman Vortex MAF The Karman Vortex system needs an ultrasonic transmitter and receiver placed across the air passage. The output from the receiver is mixed with the input to get a beat signal which is the measure of air velocity. The air velocity is measured by creating vortices in the air stream and this is done by putting a triangular obstruction in the middle. Then the air flow sheds vortices proportionally to the speed of the air going through. It looks like this in section. |---| | |Receiver - -----------------------------|___|----------------------------- - -> /| / | @ @ Vortices :) - ->AIRFLOW / | \ | - -> \ | \|@ @ - -----------------------------|___|---------------------------- | | |---|Transmitter It only measures air speed and I have no idea how to calibrate it. The Mitsubishi system uses bypasses and only measures a percentage of the air going into the engine. It also has a honeycomb flow straightener in front of it to remove spurious vortices from the air flow. I hope this will give you wizards some ideas Peter Wales pjwales@xxx.net President Superchips Inc Chairman Superchips Ltd "Timing is everything" Superchips home page with all the answers http://www.superchips.com ------------------------------ From: Fred Miranda Date: Sat, 6 Apr 1996 23:14:53 GMT Subject: RE: Autronic >Does Autronic have a web site or email address so we can get info???? > No and unfortunatly they are not well represented here in the States. TAD the pro rally outfit in Illinois is your best bet for info. (thats who I deal with) For those interested, they are up on the "boost at idle" thing, in fact Autronic is working on this also. TAD (708)550 8116 ask for Murray Fred ------------------------------ End of DIY_EFI Digest V1 #101 ***************************** 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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