Daimler Double Six (V12), 1995

[ahmedalalousi]

Hi floks,

Came across this exciting project, and I am now fully convinced to try it on a classic that I'm restoring: A Daimler Double-Six (V12), 1995.

I've just started reading the HW and SW designs, so please bear with me if I'm asking newbie questions - I am a newbie after all !!

So, my first question: is the algorithm behind the software documented anywhere? there seems to be documentation relating to variables and data structures, but no the overall workings of the software.

Second question is: from looking at the schematics, this seems to be a Fully Sequential Injection capable ECU, yet only 6 low-side switches are present on the board. For my purposes, I'd need to drive 12 of those, for 12 CoP ignitors.

I welcome all the wisdom of everyone who has tread the path before me !!

Thanks,

Ahmed.

[AndreyB]

Welcome!

latest board has 8 hi/low side and 12 low side switches, you need to look at http://rusefi.com/wiki/index.php?title=Manual:Hardware_Frankenso_board

http://rusefi.com/docs/html/ and http://rusefi.com/forum/viewtopic.php?f=5&t=10 is all the docs we have at the moment

[ahmedalalousi]

Hi Russian ..

Thanks for your response.

I could find the schematic for the Frankenstein but not the Frankenso. Is there a link to the Frankenso schematic and hardware collateral (KiKAD files ...etc) ?

I'd like to modify it to accommodate an extra 6 high/low side switches so that the platform is complete for a full 12-cyl. SFI.

Without delving into the software in detail, I'm unable to tell whether the algorithm is fully sequential. Is it?

Thanks,

Ahmed.

[AndreyB]

It is.

http://rusefi.com/wiki/index.php?title=Manual:Hardware_Frankenso_board



https://svn.code.sf.net/p/rusefi/code/trunk/hardware/frankenso/frankenso_schematic.pdf

https://svn.code.sf.net/p/rusefi/code/trunk/hardware/frankenso/

[ahmedalalousi]

Duhhh (Homer Simpson moment)

Thanks a lot ..

I'll keep you posted as my effort progresses.

Meantime, I'll upload the wiring diagram into the appropriate thread and hopefully create a car entry for my babe.

[ahmedalalousi]

Thought:

Add a further 2 of TC4427 High Speed Power MOSFET drivers as U605 and U606, wire them to PE0, PE1, PD1 and PB1 respectively.

This will provide a full set of 12 High/Low drivers for the CoP upgrade.

Schematic to follow.

Feedback?

[AndreyB]

Pe0 and pe1 there is interference with mems on discovery board.

If you use 12 low for 12 injectors, what would you use for fuel pump idle etc?

4 layer board would cost $$$. I suggest an add-on board for standard frankebso proto area.

[kb1gtt]

See the WXX area next to the WXX jumpers. This can allow for an add on board.

See this thread about a brain board with more IO http://rusefi.com/forum/viewtopic.php?f=4&t=749

Don't forget you typically want more IO than just fuel and spark. Typically you want things like fans, tach signal, often there are other valves that need to be activated to open or close air intake passage ways, fuel pump, ect. You probably need or want more than 12 low side power drivers.

Keep in mind thermal considerations. You'll want to plan for a beefy chunk of alum or copper to get the heat out and dumped to some cold spot.

Yes sequential spark and fuel. 12 cyls is not currently tested but should be possible. Fuel algo is either speed density, or Alpha-N. Other algo's can be developed and used but do not currently exist.

Great to hear you're interested in attempting a different spin. I'd be interested in how it goes, feel free to keep me in the loop, I can likely offer you a constructive critique which could make your design better.

You note SFI just to make sure that's normal manifold injection. SFI can mean stratified fuel injection AKA diesel.

[ahmedalalousi]

Cheers everyone for the lovely feedback; Well noted.

Russian, I had that thought exactly, though the configuration I have in mind needs 24 outputs in total: 12 each for the injectors and CoP modules respectively. Well pointed out re: external board.

Thanks kb1gtt for the offer of support and your valuable feedback, I'll keep you posted.

Meantime, I was looking at the problem from a different angle: to use an SPI-controlled low-side driver. The TLE7234/5/6 would fit the bill nicely. Not looked at the necessary software mods to drive these yet, but seems like a good idea, particularly for an external board.

[AndreyB]

I really doubt spi would be fast enougth to control injection and/or ignition. We have boards for two TLE chips, one has 18.channels but we never US d it on real car yet.

I still vote for standart frankenso plus extention board

[ahmedalalousi]

A Frankenso + external board is the idea russian, though if you do have boards with 2 x TLE chips with 18 Channels on top of what is already there there in terms of switching channels, then this is something I'm definitely interested in.

In as far as the speed is of SPI is concerned, the TLE SPI switches go up to 5MHz in terms of clocking speeds. 8 Cycles are needed for full data transfer, making a pulse time of 2 micro seconds well within achievable bounds.

As always .. value your feedback.

[kb1gtt]

TLE6240 board found here http://rusefi.com/forum/viewtopic.php?f=4&t=398&p=4345&hilit=tle6240#p4345

[ahmedalalousi]

Perfect kb1gtt. Two of these would fit the bill nicely.

Silly question: is this already purchasable? if not, is the KiKAD source available to make the board?

My 32F4Discovery is on the way

Thought to play with the proof of concept, then go for the Frankenso kit once I've gotten my head around which components I'm going to integrate. Also in the process of readying one of the 5.3L Jaguar V12 engines to make room and get rid of all the old vacuum pipes.

Photos to follow ..

[AndreyB]

is the KiKAD source available to make the board?

More like http://rusefi.com/forum/viewtopic.php?f=4&t=577
The page has all the links you need to order the boards @ OshPark

[ahmedalalousi]

Perfect; thank you russian.

[TopDown]

Hello ahmedalalousi,

I just joined this a few days ago and have been reading... When I saw your post about the Double-Six I nearly wet myself.

I have the same car, but a few years older. I have the 1974 version of your car with the same engine. I have a couple of the newer XKs as well and am currently enjoying them. So I am wondering if you are still working on this project as I am also anticipating the same thing as you.

Are you still working on this project? If so please feel free to send me a PM.