Bosch C 70 - Vehicle Speed Calculation Setup

5 | Analog and Frequency Inputs
26/112 Data Logger C 70 Manual Bosch Motorsport
5.4.1 Special functionality: Vehicle speed
This functionality allows:
– high performance vehicle owners to measure wheel spin under acceleration and
wheel slip/lock under braking.
– calculating vehicle ‘speed over ground’.
Vehicle speed calculation function
– Calculating vehicle speed of 2 wheel drive: (Wheel speeds of non-driven axle as input)
Calculated speed is average of both speeds if speed difference between wheels <
limit.
Calculated speed is maximum of both speeds if speed difference between wheels >
limit.
– Calculating vehicle speed of 4 wheel drive: (Wheel speeds of all wheels as input)
Calculated speed is speed of 2nd fastest wheel.
5.4.2 Setting up calculated speed
1. Click on tab ‘System Overview’.
2. Click on ‘Measurement Sources’ in the Toolbox.
3. Drag the ‘Speed’ computed source from the Toolbox and drop it on the project name
in the C 70 Project Tree. Do not drop it on ‘C 70’!
Drag + Drop
A ‘Calculated Speed Wizard’ opens.