|
||||||||||
|
||||||||||
26 Nov 2003, 11:36 (Ref:794921) | #1 | ||
Racer
Join Date: Feb 2001
Posts: 138
|
any electronic experts?
AIM
Create a stand alone "black box" system to run a mild ALS (anti lag system) on a turbocharged engine with a single carburettor and hall-effect distributor. REQUIREMENTS 1) Retard the ignition to 35 degrees after top dead centre (retarded) by modifying the signal from the distributor to the low tension side of the coil. 2) An output to drive a electronic throttle stop/choke assembly on carburettor 3) System to be armed by a master control switch and activated by a throttle micro-switch. BACKGROUND The coil is fired by the ignition amp opening the low tension circuit, there by introducing a delay will retard the ignition event. The throttle can be held open by an electronic choke device that could possibly be used to richen the mixture as well if required. PROBLEMS The timing need to be altered to 35 degrees after top dead centre, regardless of engine speed. For example at 6000 rpm the engine is running 35 degrees of advance, so the signal needs to be delayed by about 2 milliseconds, if the revs drop to say 1000 rpm the delay increases to about 8 milliseconds as the timing changes to 10 degrees advanced. When not in operation the system needs to be transparent in terms, i.e. the signal from the distributor is unaltered. alex |
||
|
27 Nov 2003, 00:21 (Ref:795640) | #2 | ||
Veteran
Join Date: Oct 2002
Posts: 1,618
|
What i would do, would be to take a voltage signal off the wire from the hall effect to give yourself an rpm sensor, and then have a delay box doing the simple time delay calculation and have a system of cutting the hal effects direct link to the ignition and then replacing it with the delayed signal after the cut
|
||
__________________
I refuse to let fact get in the way of my opinion |
4 Dec 2003, 01:05 (Ref:803231) | #3 | |
Rookie
Join Date: Oct 2003
Posts: 63
|
EFI Technology RACE1.0 ignition controller.
Here's the link http://www.efitechnology.com/engcontrol.html |
|
|
4 Dec 2003, 08:29 (Ref:803468) | #4 | |||
Racer
Join Date: Feb 2001
Posts: 138
|
Quote:
alex |
|||
|
5 Dec 2003, 00:32 (Ref:804275) | #5 | ||
Veteran
Join Date: Oct 2002
Posts: 1,618
|
o well i can't help you with that but if you give me a day or so I'll see what I can dig up from talking to people.... i can tell you now that it will run you at least a few hundred bucks in materials alone...and will require some programming on your part I don't know how comfortable with that you are.
My other thought if that is going to be to big an endeavour is to use a mechanical movement of the hall effect although that would probably be pretty sketchy and ghetto fabulous way to do it |
||
__________________
I refuse to let fact get in the way of my opinion |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Electronic timing | JohnnyFiama | Formula One | 7 | 23 Jan 2006 13:44 |
Points or Electronic ignition | kartingdad | Club Level Single Seaters | 5 | 9 Oct 2005 15:13 |
Electronic driving aids? | Kirk | Formula One | 32 | 10 Nov 2004 21:11 |
Electronic timing | Onlooker | Australasian Touring Cars. | 8 | 29 Jul 2002 12:25 |