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Tractorsport Flowbench Forum Archive • View topic - Engine speed

Engine speed

Postby Sandra » Sun Sep 09, 2007 10:58 am

Hello.
Is there anyone who knows how I get the Hz from the rpm on the outgoing shaft of the engine?
Sandra
 
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Location: Sweden

Postby Tony » Sun Sep 09, 2007 5:19 pm

The easiest way to electrically measure engine speed is by taking an output from the ignition system.
Also known as the infamous "Warpspeed" on some other Forums.
Tony
 
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Location: Melbourne, Australia

Postby dragv6 » Sun Sep 09, 2007 7:09 pm

I have a magnet on the driveshaft of the dyno & a crank trigger hall sensor.
1 pulse per RPM
Divide RPM by 60 to get Hz
10000rpm = 166.67 Hz
Hope this helps
Matt
dragv6
 
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Postby bruce » Sun Sep 09, 2007 7:38 pm

I used a 30 tooth sprocket with the teeth cut down to a flat, read the teeth with a 2 wire inductance coil (magnetic pickup) which feeds to a digital rpm indicator on my console. 30 pulses per rpm same math as above . . .

Can also feed that same signal into a DAQ card if I ever figure that part out :)
"There is no more formidable adversary than one who perceives he has nothing to lose." - Gen. George S. Patton
bruce
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