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 Exercises Wheel change Save Energy History Formulary Formulary Generally Axle Load Distribution Payload Distribution Braking Distance Driving Force Work/Energy Radian Measure Tension (brake) Brake Force Brake Pedal Brake Force (wheel) De-/Acceleration Braking Distance Braking Period CO2 emission Density Torque Pressure Injection Quatity Electrical Power Riding Speed Centrifugal Force Gas Speed Speed Coaxial Gearbox Lever Ratio Hollow Cylinder Stroke-bore Ratio Displacement Power Output p.l. Hydraulic Ratio Capacity Piston Speed Piston Force Force Crank Mechan. Forces Fuel Consumption 1 Fuel Consumption 2 Fuel Consumption 3 Ciruit Area Circuit Ring Circumference Clutch Pedal Power (mechanical) Power (effective) Power (indicated) Efficiency Weight Wire Resistance Steering Ratio Volumetric Efficiency Air Ratio Venturi Air Resistance Parallel Circuit Planetary Gearbox Percent Rectangle Rectangle Column Friction Force Tyre Calculation Serial Circuit Rolling Resistance Cam Dwell Dwell Period Slip Spread of Gears Climbing Resistance Ratio Circumference speed Conversions Not Coaxial Gearbox Valve Opening Area Valve Opening Angle Valve Opening Period Compression Ratio 1 Compression Ratio 2 Amount of Heat Resistance Efficiency Cube Ignition Interval Cylinder

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## Driving speed

The driving speed can be calculated from the speed of the driven axle directly or from the engine RPM and the transmission ratios of the gearbox and axle drive. In each case the dynamic wheel radius is necessary to do this. Actually, for this purpose, the distance between the wheel center and the road surface should be determined at the respective driving speed, because this distance becomes larger with increasing speed.

## v · 1000nA =         2 · · rdyn · 60

 Check your calculation!     You need help?Please enter numbers only in two of the three fields! nA Driven-wheel speed 1/min rdyn Wheel radius m v Driving speed km/h

## v · iG · iA · 1000nM =         2 · · rdyn · 60

 Check your calculation!     You need help?Please enter numbers only in four of the five fields! nM Engine speed 1/min rdyn Radius m iG Transmission ratio iA Axle drive ratio v Travelling speed km/h

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