| |
How dynamometers work
By Groshan Fabiola
Dynamometers or dyno systems seem complicated but once you understand the basics it all becomes clear! A dynamometer is basically just a measuring tool, in the same way as voltmeters, scales or speedometers are.
Among force-measuring devices, dynamometers are a flexible metallic ring that bends when a force is applied in such a manner as to tend to collapse it (the amount of bending being a measure of the applied force) and a hydraulic "load cell" that measures compressive loads in terms of fluid pressure.
Once you have built your new motor, or fitted any tuning parts, it is very important to visit a good automotive Dynamometer or rolling road. If you don't, then you will never be able to properly set up your engine.
A good dynamometer allows you to use a gas analyzer while under load so you can see the real air fuel mixture at all RPM's while driving.
Power-measuring dynamometers may be either transmission dynamometers or absorption dynamometers. The former utilize devices that measure torque, in terms of the elastic twist of the shaft or of a special torquemeter inserted between some sections of the shaft. The torque is produced by the useful load that the prime mover, motor, or machine is carrying.
Unlike transmission dynos, absorption dynamometers produce the torque that they measure by creating a constant restraint to the turning of a shaft, by applying mechanical friction, fluid friction, or electromagnetic induction.
A Prony brake develops mechanical friction on the edges of a rotating pulley by the means of a few brake blocks that are squeezed against the wheel by tightening the bolts until the friction torque FR balances the torque WL.
A water brake creates a resistance by circulating the water flow between a rotating impeller and a stationary shell, while an electric dynamometer generates and absorbs direct-current electricity or eddy currents. In each case, the element that exerts the restraining influence is freely cradled so that its tendency to rotate with the rotating body can be restricted and the restricted force is measured at a known distance from the axis of rotation.
Torque is the product of the spring load or weight and the distance from the axis of rotation. Dynamometers also measure the torque produced by an engine in order to reveal important information about its performance.
A diagnose is then presented in performance graphs, which can be easily printed and interpreted.
About the Author
This fine article is one of Groshan Fabiola's newest works. Also if you would like to find out full dynamometers details please enter this web site.
Article Source: http://www.simplysearch4it.com/article/23141.html
| If you wish to add the above article to your website or newsletters then please include the "Article Source: http://www.simplysearch4it.com/article/23141.html" as shown above and make it hyperlinked. |
| Some other articles by Groshan Fabiola | Termites Can Ruin Your Home
There are three conditions that attract termites to an area:
Water is the first condition that attracts termites to an area. Termites generally cannot survive without a source of water present. Termites ...
Why Are Condos Selling?
If you are looking for a condominium, New Condos Online has some amazing deals that will connect you to the right ...
Learning to Speak the English Language
When you speak in your native language, you don't have to think about the grammar or the words you use. Correct sentences seem to just come to you. Your brain uses sentences you've already ...
Long Beach Suspension Systems
Long Beach shock absorbers play an integral role in your car's Long Beach suspension system. You need to replace the Long Beach shock absorbers when evident ...
Natural Makeup
People generally wear makeup because it makes them feel better about the way they present themselves to the world. Makeup can give ...
The Advantages of UK Commercial Mortgages
The UK offers a variety of commercial investment possibilities and is the perfect place to close a commercial mortgage deal ...
|
|
| |
|
|
|
