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Hydraulic Dynamometers

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They are stable and take measurements without requiring the removal of the engine. These machines are also called water brake dynamometers because they use water or oil in the load cell. Read More…

Hydraulic Dynamometers Hydraulic dynamometers are used to measure the power of an engine by using a cell filled with liquid to increase its load.
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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. $$$

Ann Arbor, MI  |  734-822-9502

When accuracy, reliability and performance matter look to the name that means dependability: A&D Technology. If you’re looking for an AC Dynamometer or an EC Dynamometer, A&D has you covered! We are a leader in dynamometers and have extensive advantages over other dynamometer manufacturers. Contact us today for more information!

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A & D Technology Inc. $$$

Monterey, CA  |  831-373-0200

Customers choose Sierra Instruments when they need a dynamometer that is accurate and repeatable. We also offer short delivery lead times, expert flow advice, and long term customer support. Our line of dynamometers include chassis, eddy, hydraulic, and more. When it matters, choose Sierra. Contact us today to learn more!

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Sierra Instruments $$$

Twinsburg, OH  |  330-963-5400

For over 45 years, Mustang Dynamometers has been a worldwide manufacturer and designer of the highest quality, most accurate testing equipment such as chassis dynamometers, engine dynos and transmission dynes systems in the world. Our sister company, Mustang Advanced Engineering, has created world leading solutions for testing. Visit MustangDyne.com for more information. Follow them on Facebook, Twitter, LinkedIn, and Instagram.

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Mustang Dynamometer $$$

Grand Rapids, MI  |  616-234-1200

Since 1953, our customers have helped us earn the reputation of a technology pioneer and global leader in Vehicle Test Systems. As the manufacturer of the first fully electric DVT roll-brake machine, we paved the way for innovation in automotive and heavy duty vehicle testing, supplying end-of-line equipment, dynamometers, and tire & wheel assembly systems to major OEMs throughout the world.

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Burke E. Porter Machinery Company $$$
placeholder image SAKOR Technologies, Inc. A & D Technology Inc. Sierra Instruments Mustang Dynamometer Burke E. Porter Machinery Company

They can create different loads on the engine and maintain a steady RPM rate while testing. Because of this, they are often used for trouble shooting tuning problems in the engine and determining if a part is not performing. The working compartment of the hydraulic dynamometer consists of special semi-circular shaped vanes cast into stainless steel rotor and stators. Water flowing in a torodial vortex pattern around these vanes creates a torque reaction through the dynamometer casing which is measured by a precision load cell.

High Speed Hydraulic Dynamometer High Speed Hydraulic Dynamometer - Froude, Inc.

The hydraulic dynamometer fill level and consequently load is controlled by a water outlet valve, operated by a closed loop electro-hydraulic dynamometer fill level and consequently load is controlled by a water outlet valve, operated by a closed loop electro-hydraulic servo system.

The power absorbed by the dynamometer is carried away by the water in the form of heat. Applied torque by the dynamometer is measured by a load cell installed on the arm of the dynamometer. The load cell signal is transmitted to a load cell amplifier. Control command is supplied to the outlet analog water valve, through an electronic/pneumatic transducer, which converts the electric signal to proportional air quantity as supply to the valve.

Hydraulic dynamometers are used as loading units in engine test rigs. They cover a wide range of dynamometer power and torque values. They are well suited for testing of passenger car and commercial vehicle diesel engines, testing of large railway- and marine engines, engine testing in tandem configuration with asynchronous motor, testing in research and development testing in production and quality assurance.

They are however more complicated than systems that use rolling barrels because of the way the dynamometer is attached. Also, the data requires more effort and knowledge to decipher because most hydraulic dynamometers are analog.

These machines are used in automotive, aircraft, aerospace, marine, and industrial processes to measure chain or belt drives, gear boxes, fluid power systems, gas or diesel systems or transmissions in vehicles and motorcycles.

Hydraulic Dynamometer Informational Video