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Dynomometer

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Dynomometers test the performance of an engine by letting it run for long intervals at high speeds; however, the vehicle does not move and can be operated by a computer system. Some dynomometers are constructed of a frame that holds the vehicle above engine mounts, an absorption unit like a rolling cylinder, a heat exchanger and a torque measuring device. Read More…

Dynomometer Dynomometers are used to determine the torque and rotations per minute of an engine. They are widely used for automotive applications and are also called dynos, dynometers or dynamometers.
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Leading Manufacturers

Owosso, MI  |  989-720-2700

We provide dynamometer test controls and equipment for a wide range of applications. Our test cell control system is compatible with all types of dynamometers, including AC & DC motoring dynos & Water Brake Systems. Our products all include the durability & quality customers expect from SAKOR. Our dynamometers are powerful & affordable for the automotive, aerospace & heavy equipment industries.

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SAKOR Technologies, Inc. $$$

Sturtevant, WI  |  818-746-3649

Phoenix Dynamometer Technologies LLC offers the most comprehensive approach to water re-circulation systems, data acquisition systems, and dynamometers in the industry. Along with these high performance products, we also offer business continuity and a competitive advantage for our customers. Come and experience the kind of service that sets us above our competitors. We would love to serve you today. Call or visit us online!

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Phoenix Dynamometer Technologies LLC $$$

Ann Arbor, MI  |  734-213-6555

Check out the new HORIBA. As HORIBA Automotive Test Systems, we are a leading company in engine, driveline and emissions testing systems, including dynamometers, brake testers and wind tunnel balances testing tools. Plus, HORIBA Contract Testing Services can do the testing for you.

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HORIBA Instruments Inc. $$$

Norwood, MA  |  800-421-0246

Tractel is a leader in the industry featuring agriculture dynamometers, engine dynamometers and electric motor dynamometers for torque measurement. With more than five decades of dynamometer manufacturing and service, Tractel continually strives to better serve the needs of customers. We ensure the right product for any application offering several dyno models and complete turnkey test cells.

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Tractel $$$

Plymouth, MI  |  734-453-0800

Link Engineering is a 65-year-old manufacturer of custom dynamometers—full-scale aircraft inertia dynamometers, automotive dynamometers, brake dynamometers, chassis dynamometers and truck dynamometers. We can also supply you with refurbished brake dynamometers. Our multinational organization serves the passenger car, truck, trailer, bus, motorcycle, aircraft, & off-road vehicle industries.

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Link Engineering Company $$$
placeholder image SAKOR Technologies, Inc. Phoenix Dynamometer Technologies LLC HORIBA Instruments Inc. Tractel Link Engineering Company

Some models require hydraulic fluid, water or oil to operate. Modern dynomometers are computer controlled and are able to graph the capabilities and horsepower output of the engine in terms of the torque capacity, the maximum power absorption and the maximum rotary speed.

Dynamometer Dynamometer - Froude, Inc.

There are also additional features that are able to provide an analysis of emissions and reaction time. Interface options include a control console, a computer or a remote control. Dynomometers are used to measure the torque and RPMs for chain or belt drives, gearboxes, fluid power systems, gas or diesel systems, transmissions, turbines and other applications.

They are predominantly found in the automotive industry but are used for aircraft, aerospace, marine and industrial processes where engines and motors are critical. Chassis and engine dynomometers are the two main kinds of this machine. The difference is that chassis dynos measure an engine's output through the wheels of the vehicle, whereas engine dynos take readings directly from the engine itself. For chassis dynomometers, the vehicle is placed on the frame and lowered onto the rollers.

It is strapped into place and a computer starts the ignition through a spark plug. The wheels turn the absorption unit, which absorbs the energy; they are usually large metal cylinders. The computer measures how quickly the cylinders rotate and, along with factoring in the weight of the cylinders, determines the torque.

The reading is often 15% to 20% lower than a reading taken by an engine dynomometer because the energy experiences losses due to friction throughout the drivetrain. Engine dynos take measurements straight from an engine, which makes them more accurate. The torque measuring device is connected to the crankshaft or flywheel; a liquid may be used to provide resistance and cooling for the engine.

These machines are used frequently to test new engines that have not yet been installed in a vehicle or to examine an engine that is being rebuilt. Since the reading is taken directly from the engine and does not include any power loss from the drivetrain, the measurement may be referred to as engine horsepower.

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