where to put the 2nd knock sensor enable on the Vems soft...????

[rossi46numberone]

Hi,
I trying to find where do i can enable the 2nd knock sensor channel on the Vems tune soft?

[GintsK]

Knock channel.
0 means sensor 1 for all cylinders
255 means sensor  2 for all cylinders.

If you need to combine the sensors-events it is more tricky:
0 comes from 00000000 binary
255 comes from 11111111 binary

So if you want to use sensors accordantly to cylinders (spark events) , then for example
10101010 (170) will switch sensor for every spark event.

1 at the  beginning belong to bottom cylinder in ignition output table (non used one if it is not 8cyl engine).
0 at  the end belong to top cylinder in same table (used always).

any desired combination except 11110000 (240) and 11110001 (241) can be used. These two disables knock.

Converting binary<-> decimal can be done by windows native calculator.

You can read it in different "language" in 1.1.26 description here:
http://www.vems.hu/wiki/index.php?page=GenBoard%2FUnderDevelopment%2FFirmwareChanges

Of course you have to be sure about hardware present inside ECU for second sensor.

Gints

[rossi46numberone]

Hi Gints,
Whaouww what a fast reply and thanks you very much !!!
but what about the Vems knock software setting,I'm in trouble because it seems that most people are using "megatune" soft.
They are different in her way to make the setup and information that I found do not always correspond  ....
thank you again for this precious help!!
Michele.

[GintsK]

Sadly, but most people do not use knock feature at all. No good description. But until 1.1.88 MT and VT settings was similar. No?
But, yes, with MT it was possible configure to log noise and knock value. Since VT - no description how to configure such channels for logging. I used it for tuning purposes.

I am very interested to use knock control. And I hope new alternative method will be superior.

[mattias]

Hopefully Andrey will write more documentation, with more examples.
This is what we have now for the new knock code in the most recent firmware 1.1.88+ :
http://www.vems.hu/wiki/index.php?page=MembersPage%2FAndrey%2FKnock

Andrey first made it to work with older firmwares, and had his own firmware+MT package for that. He mentions 1.1.51 in the Wiki, don't mind that, it's now in the main development branch.

[Denmark]

Looks great,

I'm looking forward to some test results, of the working knock control

And a better explaning of the different settings


/Skassa

[GintsK]

For me 1.1.88 knock do not work on bench test. I got noise signal just above 6500rpm on 6cil wasted and above 11000rpm for 4cil. But that was with "INVALID" SDlogger<->knock setting. When setting is valid, nothing happens at all...

[Denmark]

hmm. hope there will be some develoment work on this then.


I do really look forward to see the noise from the different cylinders, if this would be possible with this , so the retard pr cylinder can come to use.


/Skassa

[z0tya]

Not work knock_alt on 1.1.88 me too
http://cosworth.hu/misc/v3.3_n003420-2011.03.04-07.19.16.vemslog

[GintsK]

It seems just "feature" of 1.1.88.
On 1.1.89 it works on my bench tests. As well as on 1.1.88 at high rpms.
Problem: 1.1.89 seems will not be released. We have to wait to next firmwares.

[z0tya]

It seems just "feature" of 1.1.88.
On 1.1.89 it works on my bench tests. As well as on 1.1.88 at high rpms.
Problem: 1.1.89 seems will not be released. We have to wait to next firmwares.

I hope