A dynamometer is a device designed to receive and measure the power of combustion engines tested at engine test beds. It can be used to measure the two basic engine parameters:
- Torque (Nm) - using high-sensitivity strain gauge sensor;
- Rotational Speed (RPM) - using Hall-effect pulse transmitter.
Knowing these parameters makes it possible to calculate the power of the engine at a given operating point, and a set of such points can be said to characterize the engine.
The dynamometer can be used for assessing an engine's durability, testing its running-in, and in a variety of research and development work. The AMX 200 dynamometer consists of the following components:
- the dynamometer operational set;
- the dynamometer basis.

The dynamometer operational set consists of a rotor, which is embedded in the operational set encasement.
The rotor is a cogged-edged steel disk. There is an electromagnet coil mounted over the rotor, and at the side of the rotor are located cooling chambers closed with side covers, attached to the dynamometer's body, which protects the coil from inside, and is also a closing point of the magnetic circuit. The dynamometer operational set is attached to the dynamometer basis using special bearings. The dynamometer's body extends an arm, which supports on the force transducer. The dynamometer basis has an identical arm attached, which connects to the tensometric force transducer from the bottom. The dynamometer basis is a robust steel case, whose bottom contains a chamber to collect water flowing from the cooling chambers. The water is feed to the installation through a ferrule with an external (male) thread.