Intro: New member
Pr.Willn%LOTUSINT at mail.swip.net
Pr.Willn%LOTUSINT at mail.swip.net
Tue May 10 11:57:54 GMT 1994
I'm very much game,
although I'm not sure I can contribute too much in the company of such
learned gentlemen/(ladies?), more than posting questions that are way
below the discussion level of this list.
One problem is knowledge level, the other one is that I'm PC/Windows
based using Lotus Notes, Lotus cc:Mail, to Internet thru a UUCP gateway
and that gateway does not always behave the way I want it to. Hopefully
my subscription request has gone thru so I can at least receivethe
postings (which works for the hotrod list). We'll see...
Whatever, here goes: I work for Lotus Development as a marketeer, based
in Stockholm, Sweden. The long winters up here are ideal for projects
like the following: I am building a Harley for strip/street activity
where I want to run a complete electronic management system for both fuel
injection and ignition. The system is to be adjusted from a laptop PC.
The strange firing-order of the HD motor makes buying an OEM system a bad
idea. You either need a system that can manage a 16 cylinder engine
(cutting out 14) or have somebody like Electromotive offer me two single
cylinder FI modules for the price of two. No, I was told that they cannot
modify their software due to certain legalities involved. Whatever, the
cost of a dual setup far exceeds my budget (even the single setup more
than stretches it) and the question is always "For that price, should I
go thru the trouble of making it myself" and I am certain that in this
case the answer is clearly "yes". The biggest hurdle is the programming
side of the microcontroller, but "with a little help from my friends"...
There are a few different ways of approaching this but by using common
sense, it's obvious that any EFI system will always far outperform a
carburated system even if the EFI system is not optimal. After having
spent quite a few hours chasing and going thru as much technical doc's
(and sales info) as I can find, I am looking at the following setup
regarding sensors. What I'm looking for is a second opinion for a go or
no go since I really need to choose a path for continuing the work done
so far.
The basis for my drawing board setup regarding sensors is simplicity,
forget calculating load and air mass thru temperature, MAP, throttle
positioning etc. I would like to use an airmass sensor from the Bosch
L-Jetronic systems that I understand have temperature compensation built
into it. (Airflow restrictions don't come into play as the HD motor would
displace 80 cu.in. running at 6500 rpm at the most). I look at running
separate sensors for RPM and crankshaft position on the front belt pulley
that is attached to the crank (I would love to be able to kickstart this
motor, tough proposition but I have some ideas). Oxygen sensor in the
exhaust for closed loop management on that part and topping it off with a
throttle position sensor and maybe a knock sensor. Driveability is not a
factor (i.e. rough running at warm-up is OK, no compensation needed for
AC etc.).
There's a lot of reasons behind these choices but it would take a few
pages to explain. I would like a second opinion from someone who has been
there: all I need is a simple "yes" or a "no - wrong track, you also need
a so-so sensor" at so I can finally get started working on this system.
Reg's
Par Willen
__________________
WILLEN at LOTUS.SE
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