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brendy
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Post subject: Re: Subaru's knock control strategy explained  Posted: Fri Mar 02, 2012 4:57 am |
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| Experienced |
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Joined: Fri Jan 27, 2012 2:20 pm
Posts: 235
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It is when the ecu senses issues which could potentially banjax the engine and switches to a mode which will run failsafes in fueling etc.
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2001 UK WRX Stage 3 and a bit in the fastest colour
IHI VF24
550cc Pinks
3" Cobra Sports Turbo back system
Dynapex uprated fuel pump
Green Panel filter
Decat uppipe
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MFB
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Post subject: Re: Subaru's knock control strategy explained Posted: Fri Mar 02, 2012 9:54 pm |
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| RomRaider Donator |
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Joined: Mon Dec 15, 2008 3:12 am
Posts: 672
Location: The Philippines
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So when this happens, IAM=0 right? So what are these things that makes ecu decide to do this?
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brendy
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Post subject: Re: Subaru's knock control strategy explained Posted: Sat Mar 03, 2012 1:58 pm |
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| Experienced |
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Joined: Fri Jan 27, 2012 2:20 pm
Posts: 235
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I think most maps revert to 4 or less.
_________________
2001 UK WRX Stage 3 and a bit in the fastest colour
IHI VF24
550cc Pinks
3" Cobra Sports Turbo back system
Dynapex uprated fuel pump
Green Panel filter
Decat uppipe
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05Pzev
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Post subject: Re: Subaru's knock control strategy explained Posted: Thu Sep 21, 2017 3:42 pm |
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| RomRaider Donator |
Joined: Sun Jan 03, 2016 10:05 am
Posts: 217
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I am noticing some pinging and see feedback knock correction retarding timing during this time, but the knock signal is not set in RomRaider logger. Can you explain this? Is it simply happening quicker than the logger can log it?
Example:
Time 114107
Coolant Coolant Temperature (F) 178
Engine Load (Calculated) (g/rev) 1.26
Engine Speed (rpm) 3298
Feedback Knock Correction (4-byte)* (degrees) -5
Knocking Signal #1 (On/Off) 0
I have 56 instances of this on a short drive, and only once was the knock signal set to 1.
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ride5000
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Post subject: Re: Subaru's knock control strategy explained Posted: Fri Sep 22, 2017 8:22 am |
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| Senior Member |
Joined: Thu Aug 03, 2006 10:40 am
Posts: 1934
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knock signal polling/logging is too slow.
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