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TORQUE AND POWER MEASUREMENT

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INTRODUCTION

A dynamometer, "dyno","dyn'r" or "pump" forshort, is a machine used to measure torque androtational speed (rpm) from which power produced

by an engine, motor or other rotating prime movercan be calculated.

A dynamometer can also be used to determine thetorque and power required to operate a driven

machine such as a pump.

http://en.wikipedia.org/wiki/Torquehttp://en.wikipedia.org/wiki/Rotational_speedhttp://en.wikipedia.org/wiki/Revolutions_per_minutehttp://en.wikipedia.org/wiki/Power_(physics)http://en.wikipedia.org/wiki/Heat_enginehttp://en.wikipedia.org/wiki/Motorhttp://en.wikipedia.org/wiki/Prime_moverhttp://en.wikipedia.org/wiki/Prime_moverhttp://en.wikipedia.org/wiki/Motorhttp://en.wikipedia.org/wiki/Heat_enginehttp://en.wikipedia.org/wiki/Power_(physics)http://en.wikipedia.org/wiki/Revolutions_per_minutehttp://en.wikipedia.org/wiki/Rotational_speedhttp://en.wikipedia.org/wiki/Torque

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In addition to being used to determine thetorque or power characteristics of a

machine under test (MUT), Dynamometersare employed in a number of other roles

beyond simple power and torque

measurements, dynamometers can beused as part of a testbed for a variety ofengine development activities such as the

calibration of engine managementcontrollers, detailed investigations intocombustion behavior and tribology.

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TYPES OF THE DYNAMOMETER

(DYNOJET)

MODEL 200i

Through the use of state-of-the-art computertechnology, Dynojet's MODEL 200i Dynamometer

allows you to quickly and accurately diagnoseperformance problems. By simulating the best"seat-of-your-pants" road testing right in the shop,problems are easily diagnosed in a fraction of the

time. Shop sales, service work, and credibility allbenefit with a Dynojet Chassis Dynamometer.

http://www.dynojet.com/motorcycle_dyno/200i_dyno/Default.aspxhttp://www.dynojet.com/motorcycle_dyno/200i_dyno/Default.aspxhttp://www.dynojet.com/motorcycle_dyno/200i_dyno/Default.aspx

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MODEL 250I

The MODEL 250i Load ControlDynamometer is perfect for engine break-in,durability testing and fuel injection mapping.

It's like getting two Dyno's in one package asall the features of the Dynojet InertiaDynamometer are maintained.

http://www.dynojet.com/motorcycle_dyno/250i_dyno/Default.aspxhttp://www.dynojet.com/motorcycle_dyno/250i_dyno/Default.aspxhttp://www.dynojet.com/motorcycle_dyno/250i_dyno/Default.aspxhttp://www.dynojet.com/motorcycle_dyno/250i_dyno/Default.aspxhttp://www.dynojet.com/motorcycle_dyno/250i_dyno/Default.aspx

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DYNAMOMETER HARDWARES

AIR/FUEL RATIO SYSTEM With the addition of the new Wideband

air/fuel ratio module, every dyno runcan show you not only horsepower andtorque, but also exact air/fuel ratio. Thistakes the guesswork out of fueling

adjustments. The air/fuel ratio graphshows a rich/lean condition at eachRPM range during the dyno run.Retrofittable to any existing Model 200dynamometer, as well as any upgradedModel 100 or 150 dyno utilizing thenew hardware upgrade and WinPEPsoftware.

http://www.dynojet.com/motorcycle_dyno/images/products/hardware/wideband_air_fuel_ratio_system_lrg.jpg

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ATMOSPHERIC SENSING MODULE

The Atmospheric SensingModule measures absolutepressure, air temperature, andrelative humidity. Thesemeasurements are used by theWinPEP dynamometersoftware to correct power andtorque measurements to

standard atmosphericconditions according to anSAE, DIN, or EEC formula.

http://www.dynojet.com/motorcycle_dyno/images/products/hardware/atmospheric_sensing_module.jpg

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RPM MODULE

The RPM Module receivesand processes signalsfrom up to 2 inductive

pickups for measurementof engine RPM. Eachinput has an automaticgain circuit to compensate

for a wide variance ofignition systems.

http://www.dynojet.com/motorcycle_dyno/images/products/hardware/rpm_module.jpg

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DYNAMOMETER I/O MODULE

The DynamometerInput/Output Modulesends and receives datafrom the dynamometerand the handheldpendant. The module alsocontains a buzzer andlight which are activated

when either the tire ordynamometer speed limitis approached

http://www.dynojet.com/motorcycle_dyno/images/products/hardware/dynamometer_i_o_module.jpg

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THE ROTOTEST DYNAMOMETER

Rototests dynamometers haverepeatedly pushed theboundaries of what to expectfrom chassis dynamometers.The Rototest dynamometer has

over the years helped automanufacturers, researchorganisations, OEMs, tier-onesuppliers, race teams,performance specialists and

numerous others - to increasethe quality of their products,make their cars win more racesand to perform at a higher level.

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CONCLUSION

In conclusion, the dynamometer is themachine that has been used to measure thespeed, torque and power of the vehicles

precisely. Thus, this machine is very practicalto determine the performance and stabilizedthe engine of the vehicle especially themotorcycle.

The End