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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

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Formulary Pressure

Force works on the piston from the right, pressure from the left side.

The pressure corresponds to the force, which is applied vertically to the surface area. In this case, the force is relative to the pressed surface, thus, is divided by the area of the surface. Absolute pressure is assumed to be 0 bar. This, at the same time, is also the maximum (theoretically) achievable negative pressure. The atmospheric pressure at sea-level is exactly 1013 hPa. All technical measuring instruments- and values show the relative pressure. The atmospheric pressure is used as the basis.

p =

F = p · A

A =

Check your calculation!     You need help?
Please enter only numbers in one field!
d Diameter mm cm dm m
A Area mm cm dm m
Check your calculation!     You need help?
Please enter numbers only in two of the three fields!
F Force N daN kN
A Area mm cm dm m
p Pressure  bar
Places behind the comma: 2 3 4 5
Other units:
1 bar = 10 N/cm
1 Pascal = 1 N/m
1 bar = 100.000 Pascal
1 bar = 1.000 Hektopascal (hPa)
1 mbar = 1 Hektopascal (hPa)

Pressure difference

Different pressure designations

Relative pressureAbsolute pressure
Negative pressure,
negative excess-pressure

At a higher altitude both air pressure and temperature drop.               Top of page               Index
2001-2014 Copyright programs, texts, animations, pictures: H. Huppertz - Email
Translator: Don Leslie - Email:

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