What is a Prony brake dynamometer?
Prony brake dynamometer: It is the simplest form of absorption type dynamometer. It has two wooden blocks that are placed on a pulley which is fixed on the shaft of the engine whose power is to be measured. The wooden blocks are clamped together with two sets of bolts and nuts.
How does a dynamometer work?
A dynamometer consists of an absorption (or absorber/driver) unit, and usually includes a means for measuring torque and rotational speed. An absorption unit consists of some type of rotor in a housing. The rotor is coupled to the engine or other equipment under test and is free to rotate at whatever speed is required for the test.
What are the different types of dynamometer?
There are two different types of dynamometer which use power absorption and power transmission to measure power. Steady-state tests, sweep tests and transient tests give engineers an array of power production data which can be used to improve the specific workings of an engine.
What is a chassis dynamometer?
A chassis dynamometer, sometimes referred to as a rolling road, measures power delivered to the surface of the “drive roller” by the drive wheels. The vehicle is often strapped down on the roller or rollers, which the car then turns, and the output measured thereby.
A simplest form of an absorption type dynamometer is a prony brake dynamometer. It consists of two wooden blocks placed around a pulley fixed to the shaft of an engine whose power is required to be measured. The blocks are clamped by means of two bolts and nuts, as shown in Figure.
What is Prony brake?
The Prony brake is another torque-measuring system that is now uncommon. It is used to measure the torque in a rotating shaft and consists of a rope wound round the shaft, as illustrated in Figure 18.13. One end of the rope is attached to a spring balance and the other end carries a load in the form of a standard mass, m.
What is an epicyclic-train dynamometer?
Epicyclic-train Dynamometer An epicyclic-train dynamometer consists of a simple epicyclic train of gears, i.e. a spur gear, an annular gear (a gear having internal teeth) and a pinion. The spur gear is keyed to the engine shaft and rotates in anticlockwise direction.
What is the name of the modular dynamometer with extended testing range?
Warsaw Arthur J Modular dynamometer with extended testing range EP0383624A2(en) * 1989-02-17 1990-08-22 Arthur J. Warsaw Modular dynamometer with extended testing range EP0383624A3(en) * 1989-02-17 1992-01-08 Arthur J. Warsaw Modular dynamometer with extended testing range US5404759A(en) *