Knock sensors
03-30-2004, 06:55 PM
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Originally Posted by GAMEOVER (joe)
http://www.stcloudchampionauto.com/pdf/53_KnockSn.pdf
this should help you out
this should help you out
It'* also the place where I bought my Taylor Spiro Pro'* for my 1994 SLE from.
03-30-2004, 07:07 PM
#12
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I emailed my professor. This was his response:
>I've got a question about knock sensors. You mentioned they are very
>expensive and are only on high end engines. I have a 92 Pontiac Bonneville
>with a supercharged V6 that indeed has a knock sensor that is only about $50
>to get from a dealership. Later versions of the engine got two knock sensors.
> It is my understanding that most engines have knock sensors in them today.
>Am I wrong?
>
>John Wikoff
Dear John,
Thank you for the information. I did not make it clear that I was talking about fast response knock sensors (e.g., pressure sensors and gasket sensors). The cheap knock sensors that you mentioned are usually mounted on the engine block to detect sound or frequency. They are not fast enough to do truly real-time control; to control in one-cycle time. From my discussion with auto industry, they are looking for fast response knock sensors (quite expensive currently) to really push the engine to the limit (i.e. further increase the compression ratio).
Chia-fon Lee
>expensive and are only on high end engines. I have a 92 Pontiac Bonneville
>with a supercharged V6 that indeed has a knock sensor that is only about $50
>to get from a dealership. Later versions of the engine got two knock sensors.
> It is my understanding that most engines have knock sensors in them today.
>Am I wrong?
>
>John Wikoff
Dear John,
Thank you for the information. I did not make it clear that I was talking about fast response knock sensors (e.g., pressure sensors and gasket sensors). The cheap knock sensors that you mentioned are usually mounted on the engine block to detect sound or frequency. They are not fast enough to do truly real-time control; to control in one-cycle time. From my discussion with auto industry, they are looking for fast response knock sensors (quite expensive currently) to really push the engine to the limit (i.e. further increase the compression ratio).
Chia-fon Lee
03-30-2004, 07:14 PM
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Originally Posted by OLBlueEyesBonne
Originally Posted by GAMEOVER (joe)
http://www.stcloudchampionauto.com/pdf/53_KnockSn.pdf
this should help you out
this should help you out
It'* also the place where I bought my Taylor Spiro Pro'* for my 1994 SLE from.
04-01-2004, 04:26 PM
#14
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Certified Car Nut
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He told us in class yesterday that the mass produced knock sensors are a condenser microphone. Inside the knock sensor is a piezoelectric element. The element in the sensor is tuned to the engine knock frequency.
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