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Exercises

Wheel change
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Formulary


Video Formulary

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



          A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Formulary Performance (indexed)


Variables, which determine the indexed performance




While the effective performance can be measured on the clutch, the performance index (internal performance) is achieved by calculating the internal pressure. The average internal pressure takes into consideration only the losses caused by the three preparation strokes. Other losses, e.g., through the engine control, are not considered. Thus, the performance index shows the theoretically achievable performance under ideal conditions and for this reason,is always higher than the measured performance.

Two-stroke engine

Four-stroke engine

      VH·pi ·n
Pi=
        600.000

      VH·pi·n
Pi=
      1.200.000

       Pi·600.000
VH=
        n·pi

        Pi·1.200.000
VH=
          n·pi

      Pi·600.000
pi=
        n·VH

       Pi·1.200.000
pi=
          n·VH

     Pi·600.000
n=
      pi·VH

    Pi·1.200.000
n=
        pi·VH

Check your calculation!     You need help?
Please enter numbers only in three of the four fields!
VH Total displacement mm³ cm³ dm³ (liter)
n RPM (engine) 1/min
pi Pressure
(mean ind.)
bar
Pi Performance (indexed) kW
Engine: Two-stroke Four-stroke
Places behind the comma: 2 3 4 5




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Translator: Don Leslie - Email: lesdon@t-online.de

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