Welcome back to Sipa's garage.
This time for m41 tuning I'm going to show how to tune the VANOS.
it's quite simple for these single vanos engines because it's only on or off.
So there is not much to it.
In ms41.0 and ms41.1 there is few maps that make it work.
Here is this Heavy Throttle map.
Which doesn't normally look like this but I just changed all this to zero.
And when these cells are zero it means that the vanos is off and and when these are at one, it means that vanos is on.
Normally it goes on somewhere at about 1000 RPM and then goes off after 4000 RPM.
But for this test I put zero for whole map which makes the vanos stay off whole time when I floor it.
And i need to take log with that.
In addition to that there is this Min Load Light Throttle map.
For manual car it's this one.
This works so that when load is more than these values here at part throttle, the vanos goes on.
But i haven't found good way to tune these so this time we are only going to tune the map for wide open throttle.
Now for start we are going to take a log with vanos off all the time.
Most critical items to log are load, RPM and throttle position.
But you can log all the regular items.
Taking the log is fairly easy. Just floor it at 1000 RPM and rev it all the way up to rev limiter.
And then see how it looks when vanos map is set to zero.
And then do that again in same way vanos maps set to one.
Then comparing the logs we can see how to set the vanos.
Now I already have the vanos off map already flashed in.
So I can start logging and go for a ride.
After that i load in the another map.
As I said the Full load vanos map is easy the check like this.
Just hover here around idle and 1000 RPM
Maybe use second gear.
And floor it.
Wait. Not like that.
Like this.
yeah,
That was it.
We now have the vanos off log.
I will turn this off.
Stop the logging.
Then lets switch to vanos on map to see how it looks.
Which looks like this.
So I will just flash that in.
Just flash in the partial........
No wait I need to have the ignition on.
Partial flash...
Vanos on and open. And it will start flashing.
It's now in. I will turn of ignition and close this.
Then start new log with vanos on as name.
Like that.
Start logging and start the car also.
Again in same way as previous log.
It's now done.
Yeah and now when we have that vanos on and off logs.
We can open those on Excel.
Excel should be able to open those logs straight away because those are regular CSV files.
But it can go wrong with all the dots and decimals so I will open it in Notepad++ first.
Then select all.
Paste that to Excel.
Then we use the import wizard.
From that we choose the delimited.
We only choose semicolon here.
And now the log is imported.
Then we take X Y scatter from the top. Wait what the fuck it now did.
It decided to select some rows automatically.
It doesn't matter.
Lets do that again.
From here we choose select data, add and..
As series name I will put vanos off.
As X value i will choose RPM.
And I will look where the TPS is 100%
But wait. I had the modified logger definition.
You will have it at lower value than that. But in anyway, you will choose the area where you did floor it.
Yeah there it's at 100%
So we will select the RPM from that section.
And as Y axle I will choose the Load so we can do the plot.
So vanos off we have load curve which looks like that.
Then we open next sheet and paste the vanos on map there.
Same process as last time.
But we will now choose the previous X Y scatter and add new series to it.
We will name that vanos on and choose the RPM from the other sheet.
And load as Y axle.
There is that 100% again.
No wrong spot.
Now I have the correct.
Then the load.
Ok and ok. Now we have the curves here.
We can now see the load vanos on and vanos off.
We can now easily do vanos map looking at that.
And using these curves I made map to RomRaider which looks like this.
First it is off.
Then little bit on, short time off.
Then from around 2000 RPM on up to 5000 RPM.
The off at the end.
Which looks like that as map.
You need to remember that my engine wasn't working very well when i did this video, so your curves don't probably look like that.
But it's enough to show how this is done.
Enough for that. But don't copy that map to your ecu.
Just to show how it's done.
But then with that map I did run third log and i will show how it looks like.
How the load curve matches.
Again in same way as before.
And in that you can see that the vanos has turned bit too late at 2000 and 5000 RPM points.
And that is because the vanos turns very slowly in these single vanos engines.
So we need to make the vanos transition 100-200 RPM before than the actual switch points.
So that it will be fully on or off at the point it needs to be.
So in the start we make it tun 100 RPM earlier.
just by changing these RPM values.
Like this.
Same on the top. Maybe start the turn before 5000 RPM.
Like this.
And it's done. I didn't find the log with the latest map to show you but it did follow the highest logged values really well.
So the engine will put out maximum torques it can which means most power.
During the whole rev range.
So that's how you can tune the vanos for ms41. Really simple thing to do really.
Well ok you need to know how to use Excel for example. But it's worth knowing how to use it in anyway because it will help in ms41 in many other situations also.
For more infomation >> Blood vessels | How to remove - adsorbed to blood vessels - Duration: 4:52. 
For more infomation >> Black Mirror 4x01 Promo "U S S Callister" (SUB ITA) - Duration: 0:45. 
For more infomation >> The Good Place 2x09 Promo "Leap to Faith" (SUB ITA) - Duration: 0:16. 
For more infomation >> Black Mirror 4x02 Promo "Arkangel" (SUB ITA) - Duration: 0:56. 
For more infomation >> CODE LYOKO EP98 X-MAS SPECIAL - 27min - Alive - Duration: 27:06. 
Không có nhận xét nào:
Đăng nhận xét