Tachometer calculation for odometer (automotive design)

[snaffer]

tachometer calculation

Hi there,

I have a few question regarding the odometer and tachograph.

My first question:

" Why the tachograph and odometer readings are different? "

My understanding regarding this issues is the reading should be the same coz
it share the same input but current situation shows different.

what are the possibilities that may cause this thing happen?

Hope u guys can share with me some idea about this...

cheers,
-snaffer-

 

[jijudu]

odometer design

Hi there,

Tachometer is just the current speed of the shaft or something but odometer gives the distance or the no. of revolutuions the shaft has undergone till then..

Hence the readings would be different...