[Diy_efi] Microcontroller based Auto Related Projects

Fri Nov 16 01:52:10 UTC 2012

lol... there's an airstrip down at a place called pacific harbor. that's
sufficient.

On Fri, Nov 16, 2012 at 2:45 PM, Mike <niche at iinet.net.au> wrote:

>  Gosh nik,
> My first thought is, are the Fiji Is big enough for a 1/4 mile circuit  !,
> so if
> the chute or brakes fail your get a soft salty landing :-)  :eek:
> I used to do some pocsag stuff at 148 and 432 MHz, all micro controller
> protocols
> and queing using ramtron's ferro-electric memory for non-volatile comms
> critical hospice care type nurse comms etc. all superseded now...
> A single injector controller is fine, you can always parallel them for 4,
> 6, cyl etc
> choice is whether MAP or MAF. MAP easier placement but not generally
> as precise as MAF which needs a bit more plumbing re the sensor,
> MAP is still good but can drift if air filter blocks or exhaust pipe or
> cam changes etc
> which then impact on inlet pressure changes etc... These days micros with
> usb are cheap and easier to develop so can plug it into laptop for
> passenger
> etc. Shouldnt you be doing this for a boat - given sea level rises,
> climate change etc ;-)
>
> Gotta go, need sleep, cheers
> Mike
>
>
> At 09:35 AM 16/11/2012, you wrote:
>
> no no no...I'm not into that sort of crap either. In fact I don't even
> like when someone talks to me about the color of paint on their cars for
> eg. I've been on the list on and off never posted before reading and seeing
> what comes up. But lately have got a lot of time due to no projects going
> on at work. I'm a mobile comms engineer btw. I've done some 1/4  mile
> racing with my (now sold) 1988 toyota corsa (2 door pop-up lights type)
> 1.5l turbo/IC car. Did a lot of mechanical mods and basic EFI 'fool' mods
> to increase boost etc. Did win a couple of races, lost most others! lol
>
> I've found the idea of building a single injector controller a good place
> to start especially when what I do feels like a walk in the park too easy
> is RF optimization, lot of protocols to study though in mobile comms. So I
> thought what better way to use my time now that racing is off too.
>
> Once I grasp some injector control theory, I'll make a flow chart. I'm not
> concentrating on any thing else at the moment.
>
> Escorts are great cars among 240z and chargers that I like very much. But
> never had the pleasure....
>
> Anyways, I was reading and simply ask the question never thought of any
> thing else.
>
> Regards.
>
> Nikhil
> Fiji Is.
>
> On Fri, Nov 16, 2012 at 2:17 PM, Mike <niche at iinet.net.au> wrote:
>  Ah np, I see the issue, its just we get odd ppls asking efi questions re
> parts they need
> for existing production cars as if we are parts suppliers and want links
> and often those ppl also
> are annoymous, so one gets easily put off if you dont have a name and
> havent seen any
> emails from you before and I've been here years... bit frustrating and
> esp for me as I am into demographics having worked for a PI years ago and
> keep up
> with the 'psychology of deception' and other fringe technical sociological
> issues. btw: My
> engineering thesis in 1982 was efi with integrated transmission control,
> currently getting a
> 1972 ford escort ready for my son but with twin down draught carbs.
> Will shove EFI into that a bit later, as in, will leave the carbs and have
> it run on both, primarily
> as my 20 year old wants as much get up and go as possible, might build an
> air motion
> transformer in later, have 5 different micro development kits but
> commercial work on at
> present. its now 9am here, have been up since 6pm last night, obviously
> need some sleep...
>
> useful link btw, didnt know these guys at all,
> this list has been pretty quiet for a couple of years but only in the last
> 3 weeks or so the
> list server has been configed differently so its a bit more active though
> other members prob
> asleep right now :-)
> cheers for now
> Mike
>
> At 09:07 AM 16/11/2012, you wrote:
>
>  Sorry for the misunderstanding. I think my motives are clear from this
> thread if u read the past emails. I'm building. Did introduce myself too,
> in a way at least.
>
> Obviously I don't expect a must have answer. But ill stay if thats alright
> and help where I can.
>
> - Android 2.3.4
> On Nov 16, 2012 1:01 PM, "Mike" <niche at iinet.net.au> wrote: Its most
> efficient to ask the person that made the statement, so you then dont
> bring others in and potentially waste time... not muddying the waters by
> asking someone else, by all means ask here but best only if you dont get
> a good answer from the source etc Dont know what you mean by '...acting
> on others...' I dont know the maker of that system or anyone associated
> with it,  explain please ?
> This is an email list, people only answer if they want to, they dont have
> to, You didnt say whether you were buying or building yourself, my level
> of efficiency is to find out first oneself from the best place - which is
> the source. Not to look for mailing lists, not introduce yourself and
> expect opinions, we are all about innovation in our own work primarily
> and to help builders etc You are not paying for this, It would be nice if
> some who took the easy option paid for my time, but then what is free
> opinion/advice worth.
> Will you now build or stay on the list as a member to help others and
> actually be like others and have a real name ?
> Mike
>
> At 08:52 AM 16/11/2012, you wrote:
>
>  No not buying. Got stuck at that, thought I'd ask. What is with some
> acting on others behalf. Thought that's why this forum is here. :-)
> - Android 2.3.4 On Nov 16, 2012 12:30 PM, "Mike" <niche at iinet.net.au>
> wrote: Thanks for link 'funny name' xyz#$&^%# It says 'primary' this is
> before any correction factors added for eng temp etc if you are buying on
> he will help, if not just looking for theory or want to build your own
> there are lots of sites and other people on this email list are also
> busy, so best do a lot of reading and speak/email to the seller or just
> buyu his, cheers mike At 08:13 AM 16/11/2012, you wrote:
>
>  Rending, after truncating. Message exceeded 40kb. On Nov 16, 2012 12:08
> PM, "xyz _" <xyzqhtc at gmail.com> wrote: > > Here's the link: > >
> www.sdsefi.com/em2def.htm#EM-2D > > Check under 'Theory of Operation'. > >
> - Android 2.3.4 > > On Nov 16, 2012 11:42 AM, "Mike" <niche at iinet.net.au>
> wrote: >> >> Hi, >> Manifold pressure should be processed into a value
> and >> used to look up a table of values for that engine and be
> recalibrated >> should intake, timing etc change. Mass air flow gets
> around most >> of that. I'd go back to the source of that statement
> below, >> regards >> mike >> >> >> At 07:26 AM 16/11/2012, you wrote: >> >>>
> I'd been doing some reading and searching. Came across a website that
> mentions "manifold pressure value is multiplied by the rpm value to
> determine the primary pulse width (of injector). >>> >>> 1. Can someone
> please elaborate on this. I know what MP and rpm are but how exactly is
> this done? >>> >>> 2. Is this a good method and/or are there any other
> methods available? >>> >>> Thanks. - Android 2.3.4 _______________________________________________
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