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Chris Wilson
12-12-06, 15:17
Someone found this and I have used it to good effect as an introduction to ecu fuel and ignition control for customers wanting to know more about this topic, as it's an easy read, not too techie, yet shows clearly how it all works. It may be of interest here.

http://www.teglerizer.com/fi/bem/Basics%20of%20engine%20management.htm
JustGav
12-12-06, 15:36
Cheers for this Chris..

Something I didn't think about on my pet project, is the fact that carbs have floats chambers which provide fuel on the odd occasion G forces dry the pumps out... I'm guessing that would be the purpose of a swirlpot??
Pete
12-12-06, 15:42
Nice - I'll read that later.
Chris Wilson
12-12-06, 17:13
Cheers for this Chris..

Something I didn't think about on my pet project, is the fact that carbs have floats chambers which provide fuel on the odd occasion G forces dry the pumps out... I'm guessing that would be the purpose of a swirlpot??

Pet project? Carbs? What's that then, if you don't mind me asking?
JustGav
12-12-06, 17:42
There are two morris minors and an mg midget in the extended family, one which I'm hoping to put a 4AGE motor in (Terry's advice), however the other one my father in law wants me to put a 1275 A series engine into it.

The 1275's as you know run a twin carb setup, however as a challenge I want to move it to fuel injection (purely as a learning thing)

ECU wise, I'm looking at a megasquirter purely for cost reasons, and the fact that I can use the megasquirter to do the ignition as well.

EDIT : A friend of mine is also building up a race mini with an mg metro turbo engine and he keeps asking me to have a go doing that as well....
Muffleman
12-12-06, 17:48
Someone found this and I have used it to good effect as an introduction to ecu fuel and ignition control for customers wanting to know more about this topic, as it's an easy read, not too techie, yet shows clearly how it all works. It may be of interest here.

http://www.teglerizer.com/fi/bem/Basics%20of%20engine%20management.htm

Thanks for the link Chris, have read it but will be giving it a proper read too :)
JamesG
12-12-06, 18:16
That's a good site Chris. I remember reading it a few years ago when I was applying for my motorsport ECU software job :)
TLicense
12-12-06, 19:05
Nice once Chris :thumbs:
Lebsteif
12-12-06, 19:09
Very usefull! \0/
Chris Wilson
12-12-06, 20:28
There are two morris minors and an mg midget in the extended family, one which I'm hoping to put a 4AGE motor in (Terry's advice), however the other one my father in law wants me to put a 1275 A series engine into it.

The 1275's as you know run a twin carb setup, however as a challenge I want to move it to fuel injection (purely as a learning thing)

ECU wise, I'm looking at a megasquirter purely for cost reasons, and the fact that I can use the megasquirter to do the ignition as well.

EDIT : A friend of mine is also building up a race mini with an mg metro turbo engine and he keeps asking me to have a go doing that as well....

Right, nice project. I saw a turbo bike engined Caterham at Anglesey Race Circuit this year, that ran beautifully on Megasquirt. 4AGE engine is still a lovely unit, but I am biased `cos I have one in my race car. At 10,000 RPM they sound pretty awesome! I am thinking of adding a turbo at some time, but have too many unfinished projects on the go right now ;)
Muffleman
12-12-06, 20:29
At 10,000 RPM they sound pretty awesome!

:yummy::drool:
JustGav
12-12-06, 20:36
that ran beautifully on Megasquirt.

Well, given the cost of the unit over other types of ECU's it seems a good starting option..

I am assuming from your above comment, that you rate the megasquirt unit? I take this as a very positive sign... since I've got the parts for one.
Chris Wilson
12-12-06, 21:19
Well, given the cost of the unit over other types of ECU's it seems a good starting option..

I am assuming from your above comment, that you rate the megasquirt unit? I take this as a very positive sign... since I've got the parts for one.

The electronics side of it is way over my head, I am impressed by it's price, and how the car with it on ran, but the owner was some sort of control software engineer who wouldn't be worried by it's apparent comlexity (to me). I stick to Motec and EFI Technology as support for either is just a phone call away, and my pals hide the nastiness under their years of experience with them. If I was more electronics savvy I'd give Megasquiert a go, for sure.