knock sensor

GGary5723 Feb 2007, 12:31

What voltage does the knock sensor give out?? I want to wire it into my WOLF3D as a precaution.

VVladeadmin23 Feb 2007, 14:13

Does the Wolf Support knock? I'm not aware of it?

GGary5723 Feb 2007, 14:22

No it doesnt. But we can connect it up via the Auxilary input and calibrate it according to its output voltage.

VVladeadmin23 Feb 2007, 14:46

OOOh no it won't work...

The knock sensor send's out a very high frequency audio like wave...

There is some knock sensor circuits on the net... I've built one but haven't tested it yet... It basically users a 555 timer, that filters the input from the knock sensor, when it detects a "signal" it then delays it for a few seconds causing a beep on the 555 output via a buzzer...

Now one can use that circuit to fire a Aux input to the Wolf.

quite simple but don't know if it works.

CChemCooladmin23 Feb 2007, 15:11

It basically users a 555 timer,

Vlade do you have the 555 timer circuit on you? If so, can I get copy?

CChemCooladmin23 Feb 2007, 15:38

lade do you have the 555 timer circuit on you? If so, can I get copy?

Thanks Vlade - no need any more, got it from internet. Thanks.

TThe Calibrator24 Feb 2007, 07:38

Relying on a knock sensor is a very false senso of security. Tuning the knock sesing system to recognize true knock on your particular engine can take months and very sophisticated circuitry.
They have a tendency to pick up engine noise as knock and ignore real knock.
The Ion sensing sytems work well at $20 000 US

Tune your car properly and you wont have a need for a knock sensor.

GGary5726 Feb 2007, 08:30

Tune your car properly and you wont have a need for a knock sensor.

Just want it as a precaution.

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