- Mon Mar 01, 2021 2:48 am
#48676
It has been a long time ago I was here.
Many good things done with my speeduino project. I have afr tuning with in .2 afr with auto tune and have very little hand tuning needed as for afr. I know from old school how to get very good ignition timing and have it. I am at the point where I need to find the best ignition timing with the ecu so I decided to set up a knock sensor to work with speeduino.
It is now working through my controller and shows up on a volt meter and a recording software on a laptop. I have a frequency filter for both volt meter and the recording software that filters most of the engine noise out and amplifies the knock signal. I can see the sensor spikes very clearly and hear them with play back on the sound recorder.
This was tested with a knock sound I created that sound very similar to engine knock. My filter may be different for real knock but that is an easy change to my controller.
I will be setting it up to log on TS next as I have the controller set up to give 0v to 5v also.
I am getting ready to use it to tune timing.
I am old school and know what to do the old school way but this will be better.
ECU tuning is soooooo much easier.
What I need is some input as to how to use this signal. My thought is to slowly advance timing until I see the first signs of knock signal and back off until I see no knock signal.
Is this correct?
I may find slight knock and add some fuel to cool things down and see if knock clears up.
Good thing I have spare engines and pistons. HAHAHA
Anyone worked with timing and Knock sensors?
Any help here to get it right the first time would be great.
I will set up the controller with three out puts.
One for volt meter shown in volts.
One for sound recording.
One for Speeduino/TS logging.
Almost done.
If you can, please educate me on how to use this set up.
Very cool sensor.
Thanks in advance.
Black Knight
Many good things done with my speeduino project. I have afr tuning with in .2 afr with auto tune and have very little hand tuning needed as for afr. I know from old school how to get very good ignition timing and have it. I am at the point where I need to find the best ignition timing with the ecu so I decided to set up a knock sensor to work with speeduino.
It is now working through my controller and shows up on a volt meter and a recording software on a laptop. I have a frequency filter for both volt meter and the recording software that filters most of the engine noise out and amplifies the knock signal. I can see the sensor spikes very clearly and hear them with play back on the sound recorder.
This was tested with a knock sound I created that sound very similar to engine knock. My filter may be different for real knock but that is an easy change to my controller.
I will be setting it up to log on TS next as I have the controller set up to give 0v to 5v also.
I am getting ready to use it to tune timing.
I am old school and know what to do the old school way but this will be better.
ECU tuning is soooooo much easier.
What I need is some input as to how to use this signal. My thought is to slowly advance timing until I see the first signs of knock signal and back off until I see no knock signal.
Is this correct?
I may find slight knock and add some fuel to cool things down and see if knock clears up.
Good thing I have spare engines and pistons. HAHAHA
Anyone worked with timing and Knock sensors?
Any help here to get it right the first time would be great.
I will set up the controller with three out puts.
One for volt meter shown in volts.
One for sound recording.
One for Speeduino/TS logging.
Almost done.
If you can, please educate me on how to use this set up.
Very cool sensor.
Thanks in advance.
Black Knight