Greetings buddies!
This is my first post (that post that makes us afraid coming from a freshman)... I have a MS related question on how does it cut sparks using an ignition module (such as Bosch 7 pin 0 227 100 147).
My configuration is based on hall distributor system with Bosch 7 pin ignition module 0 227 100 147.
MS is only connected on this through rpm signal and I did not have configured to cut sparks yet ( I want to use flat shift/launch control features)
I've studied a lot before posting this question and I did not find any reasonable neither logical answer based on megasquirt manuals nor my electronics/computer knowledge as a computer engineer.
So, understanding that there's no magic on megasquirt spark cut system, how does it cut spark by retarding TDC with a single connected wire on ignition module (for reading rpm/synchronization)??
How does megasquirt cut spark with an ignition module?
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niccolatorres
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jsmcortina
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Re: How does megasquirt cut spark with an ignition module?
Sounds like you are receiving a tach-in signal from the ignition module and Megasquirt is only controlling fuel - correct?
In this case you cannot do spark cut.
You need the Megasquirt to be controlling ignition fully for spark cut. (It won't work with EDIS or GMDIS either.)
James
In this case you cannot do spark cut.
You need the Megasquirt to be controlling ignition fully for spark cut. (It won't work with EDIS or GMDIS either.)
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
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niccolatorres
- MS/Extra Newbie
- Posts: 3
- Joined: Mon Aug 25, 2014 2:23 pm
Re: How does megasquirt cut spark with an ignition module?
Thanks for your response, James!jsmcortina wrote:Sounds like you are receiving a tach-in signal from the ignition module and Megasquirt is only controlling fuel - correct?
In this case you cannot do spark cut.
You need the Megasquirt to be controlling ignition fully for spark cut. (It won't work with EDIS or GMDIS either.)
James
Yes, that's correct! I am only connecting MS to Bosch Ignition tach signal. By connecting to Pin 24 v2.2 board.
So,
to cut spark through Bosch Ignition module, do I need to implement the following circuit on v2.2 board?
According to source, I must connect MS v2.2 pin 25 to Bosch Ignition Pin 6:
Pin 6 > Spark output from Megasquirt (Pin 36 for a V3.0 PCB or pin 25 (X11) for a V2.2 PCB)
So, implementing this can MS cut spark with Bosch Ignition module? Sorry about my exhaustive questions, btw
Source: http://www.msextra.com/doc/ms1extra/MS_ ... .htm#bosch