2JZ 3/0 cam wheel problem
2JZ 3/0 cam wheel problem
Andrey: Told me that you need to move the Crankshaft offset into the right phase. Who is the right phase? I thought the main reference sensor was the crankshaft sensor. But here's the log.
lastest logs is https://rusefi.com/online/view.php?log=1279
lastest logs is https://rusefi.com/online/view.php?log=1279
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Re: 2JZ 3/0 cam wheel problem
2JZ 3/0 cam wheel is a unique one and it looks like while we have all the needed code, we never got it to properly run and never documented the magic way it's configured while we are figuring it out.
At the moment your log shows that engine phase was not detected - note the magic field names I am looking at.
First improvement: I've already improved the names for two of these fields https://github.com/rusefi/rusefi/commit/768eefbb36d4ffc195f9f24b82a2ca8fd2c74534
Now the real problem: you need to configure some magic settings. In the binary which you have at the moment it's hidden at Lua Calibrations -> Lua Script Settings, please set it like here (we care for two bottom values)
The method above is insane so I am now adding explicit special settings especially for 2JZ https://github.com/rusefi/rusefi/commit/8391bc4dee794071544babb796e6c0e783f6017b
https://github.com/rusefi/rusefi/issues/5557
At the moment your log shows that engine phase was not detected - note the magic field names I am looking at.
First improvement: I've already improved the names for two of these fields https://github.com/rusefi/rusefi/commit/768eefbb36d4ffc195f9f24b82a2ca8fd2c74534
Now the real problem: you need to configure some magic settings. In the binary which you have at the moment it's hidden at Lua Calibrations -> Lua Script Settings, please set it like here (we care for two bottom values)
The method above is insane so I am now adding explicit special settings especially for 2JZ https://github.com/rusefi/rusefi/commit/8391bc4dee794071544babb796e6c0e783f6017b
https://github.com/rusefi/rusefi/issues/5557
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Re: 2JZ 3/0 cam wheel problem
So I set the settings that you suggested above, it seems I have camshaft synchronization? Do these magic numbers correct the positions of the cams? I want to know more about it))
Last logs is https://rusefi.com/online/view.php?log=1281
Last logs is https://rusefi.com/online/view.php?log=1281
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Re: 2JZ 3/0 cam wheel problem
Yes, these magic numbers are the range of randomly designated sync tooth on the cam.
Now please update to fresh snapshot and let's use proper configuration specifically for 2JZ
Now please update to fresh snapshot and let's use proper configuration specifically for 2JZ
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Re: 2JZ 3/0 cam wheel problem
I downloaded the last Snapshot and set the above values.and now I don't see the position of vvt1 vvt2
Here is the log
https://rusefi.com/online/view.php?log=1282
Here is the log
https://rusefi.com/online/view.php?log=1282
Re: 2JZ 3/0 cam wheel problem
So, we officially have a success on synchronization. I'll leave a link to the log here
https://rusefi.com/online/view.php?log=1285
Thank you Andrey , this is magic !!!
https://rusefi.com/online/view.php?log=1285
Thank you Andrey , this is magic !!!
Re: 2JZ 3/0 cam wheel problem
There is a problem, VVT syncnorization disappears after 1800 RPM.
It seems to come from here https://rusefi.com/forum/viewtopic.php?f=4&t=2521&p=47394&hilit=lazy#p47394
Do not change the camshaft sensor to a simple hall sensor without this joke?! I don't fully understand why this is happening.
Log is https://rusefi.com/online/view.php?log=1290
And last tune https://rusefi.com/online/view.php?msq=1544
It seems to come from here https://rusefi.com/forum/viewtopic.php?f=4&t=2521&p=47394&hilit=lazy#p47394
Do not change the camshaft sensor to a simple hall sensor without this joke?! I don't fully understand why this is happening.
Log is https://rusefi.com/online/view.php?log=1290
And last tune https://rusefi.com/online/view.php?msq=1544
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Re: 2JZ 3/0 cam wheel problem
We have "Maximum cam/VVT sync RPM(rpm)" setting since technically you do not need sync all the time
What is the problem you are facing? Looks like you have no VVT so nothing negative is happening? https://rusefi.com/online/view.php?msq=1544&dialog=vvtPidDialog
What is the problem you are facing? Looks like you have no VVT so nothing negative is happening? https://rusefi.com/online/view.php?msq=1544&dialog=vvtPidDialog
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Re: 2JZ 3/0 cam wheel problem
Looks like the log was taken at 100 reads per second not max reads per second?
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Re: 2JZ 3/0 cam wheel problem
Hi Andrey, in this setting I have the value set to 0 - disabled, always synchronize.AndreyB wrote: ↑Thu Sep 28, 2023 3:21 amWe have "Maximum cam/VVT sync RPM(rpm)" setting since technically you do not need sync all the time
What is the problem you are facing? Looks like you have no VVT so nothing negative is happening? https://rusefi.com/online/view.php?msq=1544&dialog=vvtPidDialog
Now not a single vvt solenoid is connected until I understand that everything is ready for vvt with feedback. The problem now is that when my revolutions rise above 1800, the values of the vvt angles freeze and do not change until the engine returns to speeds below 1800 rpm (I have a chain timing belt and when the revolutions rise, the vvt angles move slightly away from zero, this is a landmark for me) In the future I will hard-limit the vvt to 6200 rpm, but for now I'm losing the feedback from the vvt.
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Re: 2JZ 3/0 cam wheel problem
At 1800 RPM 100 per second is no longer useful.
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Re: 2JZ 3/0 cam wheel problem
Okay , today I’ll make a log with the maximum value of readings per second and post it
Re: 2JZ 3/0 cam wheel problem
Is that it? will look the same as the previous log ?!
log is https://rusefi.com/online/view.php?log=1292
log is https://rusefi.com/online/view.php?log=1292
Re: 2JZ 3/0 cam wheel problem
So, since I have a camshaft sensor from mitsubishi, I began to look for similar ones in size and connectors. And I found.
On the right is my native sensor, to the left of 4g18, 4g63 and it fits the pinout. Now about the my problem. This sensor does not have Invert signal after 1800 and one of the camshafts now always has a constant VVT angle. So my problem is precisely that the sensor inverts the signal (Lazy hall)
Is it possible to do something about it?
Log file in high speed here https://rusefi.com/online/view.php?log=1294
On the right is my native sensor, to the left of 4g18, 4g63 and it fits the pinout. Now about the my problem. This sensor does not have Invert signal after 1800 and one of the camshafts now always has a constant VVT angle. So my problem is precisely that the sensor inverts the signal (Lazy hall)
Is it possible to do something about it?
Log file in high speed here https://rusefi.com/online/view.php?log=1294
Re: 2JZ 3/0 cam wheel problem
Today I bought a second such sensor and decided to try to control the VVT closed loop and I have a crash again. If I try to turn the camshaft at least 3 degrees, then the engine starts to shake and the VVT readings of this camshaft freeze (This can be seen in the graph, a straight line)
So long I will not return the camshaft position to 0 degrees on the table. Is this again a loss of synchronization and a closed loop going out of the parameters? I also limited the maximum PWM to 50 to eliminate swinging using the PID regulator.
As always,Fresh log https://rusefi.com/online/view.php?log=1296
and tune https://rusefi.com/online/view.php?msq=1548
Only VVT1 output is assigned
So long I will not return the camshaft position to 0 degrees on the table. Is this again a loss of synchronization and a closed loop going out of the parameters? I also limited the maximum PWM to 50 to eliminate swinging using the PID regulator.
As always,Fresh log https://rusefi.com/online/view.php?log=1296
and tune https://rusefi.com/online/view.php?msq=1548
Only VVT1 output is assigned
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Re: 2JZ 3/0 cam wheel problem
3/0?
2JZ cam's are either single tooth on non-VVT engines, or 4-1 on VVT engines. What is this 3/0?
2JZ cam's are either single tooth on non-VVT engines, or 4-1 on VVT engines. What is this 3/0?
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Re: 2JZ 3/0 cam wheel problem
Good time everyone! Norman, unfortunately I don’t know about the origin of this camshaft, but I have exactly this on my Subaru ez30.
Now about the current state. At the moment, thanks to Dron_gus and Pavel, I managed to find out the duty cycle range and I worked a little with the PID regulator and finally the vvt with feedback works and holds the speed, but this continues until +10 degrees, after which the connection about the camshaft position is lost and the vvt angle readings freeze.
I made a log and uploaded a new tune with the current problem.
Log https://rusefi.com/online/view.php?log=1298
Tune https://rusefi.com/online/view.php?msq=1554
Please help with this, this is the last serious problem on the way to my happiness and the happiness of the engine
Now about the current state. At the moment, thanks to Dron_gus and Pavel, I managed to find out the duty cycle range and I worked a little with the PID regulator and finally the vvt with feedback works and holds the speed, but this continues until +10 degrees, after which the connection about the camshaft position is lost and the vvt angle readings freeze.
I made a log and uploaded a new tune with the current problem.
Log https://rusefi.com/online/view.php?log=1298
Tune https://rusefi.com/online/view.php?msq=1554
Please help with this, this is the last serious problem on the way to my happiness and the happiness of the engine
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Re: 2JZ 3/0 cam wheel problem
Looks like you are lucky with the relative angle of your two cam shafts for the code to synchronize both cam positions at all using same settings for both shafts. I might would need to change things later for two 2JZ cam shafts to work more reliably.
Anyway. You have the magic position = 95 and precision = 25 settings meaning it's looking for a tooth in the from 95-25=70 to 95+25=120 range. Well, it also looks for the offset by 360 range of from 360+70=430 to 120+360=480.
Note the top yellow values on my screenshot - the red bank 1 intake looses sync when the yellow line gets below 430.
Try changing precision = 25 to precision = 40 for now?
Anyway. You have the magic position = 95 and precision = 25 settings meaning it's looking for a tooth in the from 95-25=70 to 95+25=120 range. Well, it also looks for the offset by 360 range of from 360+70=430 to 120+360=480.
Note the top yellow values on my screenshot - the red bank 1 intake looses sync when the yellow line gets below 430.
Try changing precision = 25 to precision = 40 for now?
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Re: 2JZ 3/0 cam wheel problem
Yay, those magic numbers helped me. Now I can set an angle greater than 10 and it is held. Now I have connected the wiring of the second solenoid VVT Right cylinder head and I do not see any changes, not seeing the PWM on this channel. If you swap the Exits on the solenoids, the PWM appears on the channel on the right head and disappears on the left.
I also don't see any readings in vvtTargets 2
I updated the firmware from the last snapshot
Log here https://www.rusefi.com/online/view.php?log=1299
Tune here https://www.rusefi.com/online/view.php?msq=1556
I also don't see any readings in vvtTargets 2
I updated the firmware from the last snapshot
Log here https://www.rusefi.com/online/view.php?log=1299
Tune here https://www.rusefi.com/online/view.php?msq=1556
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Re: 2JZ 3/0 cam wheel problem
rusEFI usability issue: bank 2 intake is target 3
rusEFI functional issue: only bank 1 cam events were logged just fixed https://github.com/rusefi/rusefi/commit/0921a303d09696d8cbae37e4abab5fd783beae20
To be continued.
rusEFI functional issue: only bank 1 cam events were logged just fixed https://github.com/rusefi/rusefi/commit/0921a303d09696d8cbae37e4abab5fd783beae20
To be continued.
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Re: 2JZ 3/0 cam wheel problem
I am sorry I am using you for manual testing while proper way would have been to add some auto-testing of multi-channel VVT
Anyway I've just improved VVT output PID logging https://github.com/rusefi/rusefi/commit/0df3dbb06b75036f310e4172ad190dbb79befef1 it would not solve your issue but at least give us more data. Please make a new log once firmware snapshot builds.
Anyway I've just improved VVT output PID logging https://github.com/rusefi/rusefi/commit/0df3dbb06b75036f310e4172ad190dbb79befef1 it would not solve your issue but at least give us more data. Please make a new log once firmware snapshot builds.
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Re: 2JZ 3/0 cam wheel problem
Found the defect https://github.com/rusefi/rusefi/issues/5599 already fixed it!
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Re: 2JZ 3/0 cam wheel problem
Hello everyone, today I tested what Andrew fixed, for which I am very grateful to him. When setting up the Precision VVt after setting the values to 40, everything works up to 28 degrees, anything above again a loss of synchronization. Now I've set it to 60 and have a successful sync up to 38 degrees, I haven't raised it higher in the vvt goal table yet
Success Log https://www.rusefi.com/online/view.php?log=1306
The Tune of Success https://www.rusefi.com/online/view.php?msq=1562
Andrew has magic numbers again. Thank you very much Andrew!
Success Log https://www.rusefi.com/online/view.php?log=1306
The Tune of Success https://www.rusefi.com/online/view.php?msq=1562
Andrew has magic numbers again. Thank you very much Andrew!