Members Page/Keith Hargrove - VEMS wiki www.vems.hu

MembersPage/KeithHargrove (2006-03-16 04:43:08)

Hall

this is my proto

I will remake it now and clean stuff up

VW COP

Too long for the 4cly

Looks like I can make it work for the V6

The pinout

if there is a power-NPN inside I think we will need to add a small NPN (2N3904), eg. on the IGBT pads:

the small NPN's Base goes to where the gate was (1k away from ign259's output pin)
Emitter need to go to a resistor (say 10..33 Ohm) then the COP pin 3 (driving the power-NPN's base)
and the Collector goes to power (+14V, same that powers the coil)

Let me note that stepper driver could drive the NPN almost directly, through a resistor (and very fast!) if we allowed any digitalout()-pin for ignition in edis.c (not just the ign259 outputs).

1J0973724 might be the plug for the VW coil as vw etka lists them

Triggering

I have been working on a easy way to retrofit older cars with no tiggers.

The proposed GenBoard/InputTrigger setups below are optimized for fast startup (little time spent in cranking).

"They are not simpler than the supported (ncyl/2*N - m) missing tooth crankwheel setup (like a vanilla 24-1, 36-1 or 60-2),"

How is making a "Vanilla 24-1, 36-1 or 60-2" + some cam pickup(we need to know when to fire the coils and which cyl to inject to)

simpler the breaking off 2 tabs and adding a hall.

but with appropriate firmware support they can find out the engine position faster at cranking.

Anyway, I like the documentation format. We need to explain the direct ign setups on DummyIgnition page (or rather subpages) in a similar way:

drawing - the 3D is especially nice (rotation direction is important in some cases!!)
explanation
advantages
disadvantages
config settings (if supported)

This is not the simplest for a 4 cyl.

It is not?? OK what is simpler that will do seq. injection and drive the 4 coils?

The pickups are 180Â° apart.

If the 2 pickups were ANDed it would look like a it had 4 tabs not 2

so with this we can see 8 edges one every 45Â° of the encoder or 90Â° crank

We can add more tabs if we want. 4 tabs would give 22.5Â° on the encoder and 45Â° on the crank.

With this we get:

Sync after one gap.
If a pickup dies we could still run.
Very simple to make and install in a old distributor or on a CAM
If the 90Â° is ok most Hall distributors could be retrofited by removing 2 tabs and adding a 2nd hall

This is a old example of a simple trigger for 6 cyl.

The pickups are 60Â° apart.

Pickup A is even. and pickup B is odd.

With this I can get sync after the first Gap.

So I will not have the crank and crank untill #1 comes around to get sync.

also if one fails I should be able to still get sync after no more the 2 gaps (1 gap past the working pickup) and use softwate timing for the missing pickup.

This can go ether on a cam or inside a distributor.

injector connectors

http://www.machv.com/fuelincon.html $12

http://www.racetep.com/injcon.html $10

http://www.clewett.com/products/connector.htm $4.50 + $2.50 for 5 pins ($3.85each for 8)

good pics here

http://shop.store.yahoo.com/eagleday/ampconnectors.html

tyco info

http://catalog.tycoelectronics.com/TE/bin/TE.Connect?C=17458&M=FEAT&LG=1&I=13

827551-3(black type C) very common pin 927846-1

826008-1(grey typa A) 826008-5 (black)

825414-1(grey type b)