An engine dynamometer gives a more precise calibration for racing applications.
From the en.wikipedia.org
A motoring dynamometer acts as a motor that drives the equipment under test.
From the en.wikipedia.org
A dynamometer that can either drive or absorb is called a universal or active dynamometer.
From the en.wikipedia.org
The Power Absorption Unit of a dynamometer absorbs the power developed by the prime mover.
From the en.wikipedia.org
The new test requires a high-tech treadmill device with the Jetson-ish name dynamometer.
From the time.com
Each model is tested on what's called a dynamometer, which is like a treadmill for cars.
From the forbes.com
More recently, an engine dynamometer is used instead of a De Prony brake.
From the en.wikipedia.org
A dynamometer that is designed to be driven is called an absorption or passive dynamometer.
From the en.wikipedia.org
With a chassis dynamometer or rolling road, power output is measured at the driving wheels.
From the en.wikipedia.org
More examples
Measuring instrument designed to measure power
A dynamometer or "dyno" for short, is a device for measuring force, moment of force (torque), or power. For example, the power produced by an engine, motor or other rotating can be calculated by simultaneously measuring torque and rotational speed (RPM).
A device used to place a load on an engine and measure its performance.
An apparatus capable of inducing various loads for evaluation of dynamic belting properties.
Old term describing strain measuring equipment on cablegear. Now generally superseded by the term, 'Loadcell system'.
Mechanical instrumentation that allows for measurement of concentric and eccentric muscle action, muscle endurance and muscle balance ratios. Usually associated with isokinetic testing, providing variable, accomodating resistance.
Machine used to measure an engine's power output. Often coupled to an engine on a test bed.
Device for measuring power input or output of a mechanism.
A device which places a load on the motor to accurately measure its output torque and speed by providing a calibrated dynamic load. Helpful in testing motors for nameplate information and an effective device in measuring efficiency.