The dynamometer is a device used to measure mechanical force, power and torque produced by an engine.
Its inventor, Charles Babbage, is also known as the Father of Computing.
There are basically two types of dynamometers: the first one is bolted directly to an engine, and its called engine dyno, while the second type of dynamometer can measure power and torque without removing the engine from the frame of the vehicle, and its known as a chassis dyno.
An engine dynamometer measures power and torque directly from the engine’s crankshaft (or flywheel), when the engine is removed from the vehicle. These dynos dont take in consideration power losses in the drive train, such as the gearbox, transmission or differential.
A chassis dynamometer measures power from the engine directly through the wheels. The vehicle is parked on rollers and the output is measured. These dynos can be fixed or portable.
The dynamometer works by applying various loads on the engine and by measuring the engine’s ability to move the load. It is connected to a computer which uses mathematics to calculate the output of the engine. The engine is run from idle to...
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