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Use Aux out function to trigger a knock alarm light.


Invecii

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Hi,

I would like to using an Aux out channel to trigger my knock alarm light, I hope it can be triggered once knock occur.

 

I see there is a Knock value condition in the GP output parameters. Does anyone know the definition of the knock value in the GP out?

or are there any way to set a LED lamp to be knock alarm light?

 

thanks.

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I was hoping to do similar - when I had my standard Mitsubishi ECU, the aftermarket community had enabled the ability to flash the Check Engine Light when knock was detected over the defined threshold.

Unfortunately, I found that with the Link ECU, there's no way to get it to set an Aux output based on anything other than a static knock level, despite your Knock Target being a table. So, if your Knock Target is 400 at 3000rpm but 600 at 6000rpm, you'll need to choose whether to be told about levels over 400, and then you'll potentially get "falsely" notified of knock at higher RPM, or set your warning for the high RPM knock level, but not be able to be informed about knock levels above your target at lower RPM.

What's needed, IMO, is a Knock Level > Knock Target option (and the corresponding Knock Level < Knock Target option.

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  • 1 month later...
On 5/9/2020 at 3:02 PM, Confused said:

I was hoping to do similar - when I had my standard Mitsubishi ECU, the aftermarket community had enabled the ability to flash the Check Engine Light when knock was detected over the defined threshold.

Unfortunately, I found that with the Link ECU, there's no way to get it to set an Aux output based on anything other than a static knock level, despite your Knock Target being a table. So, if your Knock Target is 400 at 3000rpm but 600 at 6000rpm, you'll need to choose whether to be told about levels over 400, and then you'll potentially get "falsely" notified of knock at higher RPM, or set your warning for the high RPM knock level, but not be able to be informed about knock levels above your target at lower RPM.

What's needed, IMO, is a Knock Level > Knock Target option (and the corresponding Knock Level < Knock Target option.

hm... so you are saying there is no way to setup PWM output that would inhibit value under knock event? or, if the ECU is equipped with knockboard capability, you won't be able to inhibit knock correction as the event to output PWM signal? 

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