knock sensor

Gary57 · Post by **Gary57** » Fri Feb 23, 2007 12:31 pm

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

Vlade · Post by **Vlade** » Fri Feb 23, 2007 2:13 pm

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

Gary57 · Post by **Gary57** » Fri Feb 23, 2007 2:22 pm

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

Vlade · Post by **Vlade** » Fri Feb 23, 2007 2:46 pm

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.

ChemCool · Post by **ChemCool** » Fri Feb 23, 2007 3:11 pm

It basically users a 555 timer,

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

ChemCool · Post by **ChemCool** » Fri Feb 23, 2007 3:38 pm

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.

The Calibrator · Post by **The Calibrator** » Sat Feb 24, 2007 7:38 am

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.

Gary57 · Post by **Gary57** » Mon Feb 26, 2007 8:30 am

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

Just want it as a precaution.