NefMoto

Hello guys, i want to know if there is a parameter that allows to count or skip a certain amount of crank pulses at the engine startup, in order for the oil pump to make pressure before the engine fires.

This engines start right away and i saw that in megasquirt there is a function that you can set a number of pulses to skip before ignition happens. I think this is very good for the engine´s life.

Is it for ME7 ?
Do you have DAMOS ?

If yes to the two question, then, yes, there is this function on ME7.

There's also less advance at starting to hurt less low engine parts.

I'll try to find name of parameter, but, without damos . . .pretty hard to find.

Should be in the FR if you dig around a bit.

Yes and yes  titi65 :) starting advance adjust would be nice too.

Most people do not realize the kind of wear and engine has at startup.


what is the FR nyet?

http://nefariousmotorsports.com/forum/index.php?topic=400.0title=
http://nefariousmotorsports.com/forum/index.php?topic=1883.0title=

Stickies, in this very forum.

OK, Funktionsrahmen got it.

My german is like zero to read the FR tho, so any further help will be very appreciated!

titi65, did you find something?

I've understood you've find what you're searching for  . . .
Visibly, not .

i think the timing while cranking could be ZWSTT, am i wrong?


Do you think IGNDELAY is the one i am looking for? To do that kind of the skip pulse function?


(IGNDELAY : Siehe Kapitel 2.12 , wenn gew¨unscht dann maximal gleich der Anzahl
der Segmente f¨ur eine 360 KW Drehung.)


Google translate seems to not keep up with technical german!

It seems you have found what you are looking for.

The trick for Google translate is using the pop up keyboard to change out the "o,u,a, etc" to the ones with the accent marks above. then the translation cleans up pretty well. for example: change gew¨unscht to gewünscht, f¨ur to für and so on.

(IGNDELAY : Siehe Kapitel 2.12 , wenn gew¨unscht dann maximal gleich der Anzahl
der Segmente f¨ur eine 360 KW Drehung.)  =  

(IGNDELAY : See Section 2.12, if desired then a maximum equal to the number
of segments for a 360? KW rotation.)

Sometimes you have to separate the word into smaller words to get it to translate also and this can get tricky because two different sequences change the translation and make it something totally different from the other. example:

Synchroanzahl Zündfreigabeverzögerung AZUE (1x1)

1 : 1 Umrechnug (dez/hex)/

      -
      0
-   0   0.00

translates to:

Synchro number Zündfreigabeverzögerung AZUE (1x1)

1: 1 Umrechnug (dec / hex) /

-
0
- 0 0:00

So I put a space in like this:
Synchroanzahl Zünd freigabeverzögerung AZUE (1x1)

1 : 1 Umrechnug (dez/hex)/

      -
      0
-   0   0.00

and get this:
Synchro Number ignition delay release AZUE (1x1)

1: 1 Umrechnug (dec / hex) /

-
0
- 0 0:00

I just add spaces and put them back and add a space elsewhere until it makes sense to me...then I go ask someone else what they think and/or check it in Bing translate.

Thanks a lot userpike for the google translate über course! very helpful really.


So now, about the IGNDELAY the original value is 0, and the maximun value possible is 255 what should be there in order to get the crank around 2 or 3 seconds before the ignition kicks in????

Also, is there a way for that to occur only when the engine is cold?


C´mon guys this is not precisely performance tuning, but it is tuning that helps the engine to last!

I'm pretty sure IGNDELAY is not what you want. I'm not sure what it does, but after looking at the FR, i doubt it inhibits ignition from cold start.

Also, unless you are in fuel cutoff, I don't think you want to be inhibiting spark, unless you want to flood your engine.

Finally, there is an English FR also, albeit for ME7.3.1 (Alfa)

this one has information missing. for example, the function description for BBGANG is missing. The heading is there but the content is not there.

pg502

FB BBGANG 21.10 Detailed description of function
<no content>
APP BBGANG 21.10 Application hint

Also after skipping around this FR, I found some of the content is still in German.

still extremely useful though, but it doesn't have all the answers.


I just did a search for IGNDELAY in it also and is nowhere to be found.

kfztnwakl and tvnwakl could be what you're searching for . . .
And for ignition:kfzwmnst ...

Check for them ;).

you could also just remove your fuel checkvalve :)

Nyet, i don´t want to inhibit just the spark at start up, that would cause the inyectors to flood the engine as you stated.

What i am looking is that the ECU kind of ignore the first pulses from the crank trigger so the engine crank turns but nothing happen: Neither spark nor inyection, until some time after.

That is a function of the megasquirt ecu, it is called skip pulse. Main function to build oil pressure.

you can also install a starter button and crank it up without the ignition on, but that will be the lazy solution.


If an antilag system can be implemented why this not?

Have you check my last reply ?

Yes!

 i can´t find kfztnwakl and tvnwakl at the ME7.1 FR but i will look at the damos.

For the cranking ignition timing: kfzwmnst totally is!


edit: i did look at the damos but kfztnwakl and tvnwakl are not there.


THX!

You're welcome.
In ME7.4.6, theses datas exists, but I can't find on the documentation ME7.1.

Maybe on ME7.5 . . .

pretty sure you are right. the best translation I could come up with said that it only delays the ignition only until the first full cylinder fill, so a max of 1 crankshaft rotation or 360 degrees but the min could be 0 degrees rotation.  I think it has this for emissions reasons.

I'm not so sure there is a "skip pulse" function in me7.5. I spent a good 2/3 hours looking for some evidence in the FR while referencing a ME7.5 fully defined definition file. I do remember seeing IGNDELAYCT somewhere but didn't get to it yet.

The damos i have is for a me7.5 and there is not such parameters named like that in there. Maybe they are named sligthly different.