Spark plug -knock sensor
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From: clinton,tn
Spark plug -knock sensor
i saw somewhere this week, I think on speedvision, where either Volkswagon or Ford of Europe is useing the spark plugs to detect knock. They mentioned that due to the change in ionozation of the combustion process that happens when knock occurs that they were able to detect knock faster therefore able to adjust the timing faster to stop it from reoccuring. Jacob electronics uses a simular method to adjust the output of the coil to coinside with the need according to load. It sure would be nice to incorparate some of these features into our ecms to run as close to the edge as posible without fear of destroying our engines.
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Joined: Jun 2000
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From: In reality
Car: An Ol Buick
Engine: Vsick
Transmission: Janis Tranny Yank Converter
<font face="Verdana, Arial" size="2">Originally posted by steve8586iroc:
i saw somewhere this week, I think on speedvision, where either Volkswagon or Ford of Europe is useing the spark plugs to detect knock. They mentioned that due to the change in ionozation of the combustion process that happens when knock occurs that they were able to detect knock faster therefore able to adjust the timing faster to stop it from reoccuring. Jacob electronics uses a simular method to adjust the output of the coil to coinside with the need according to load. It sure would be nice to incorparate some of these features into our ecms to run as close to the edge as posible without fear of destroying our engines.</font>
i saw somewhere this week, I think on speedvision, where either Volkswagon or Ford of Europe is useing the spark plugs to detect knock. They mentioned that due to the change in ionozation of the combustion process that happens when knock occurs that they were able to detect knock faster therefore able to adjust the timing faster to stop it from reoccuring. Jacob electronics uses a simular method to adjust the output of the coil to coinside with the need according to load. It sure would be nice to incorparate some of these features into our ecms to run as close to the edge as posible without fear of destroying our engines.</font>
They apply 80v to the plug after it fires, and then read the resistance across it, and the resistance changes you can see a pattern. Really is slick.
I'm involved in trying to genrate a DIY version, that is alot simplier.
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