Dynamometers & Dynamometer Manufacturers
Dynamometers, also known as dynomometers, dynometers, dynos and, within context, motor testers, are devices that measure force, horsepower, maximum rotary speed or maximum power absorption. Most often, they test and measure the forces produced by an engine. One of the earliest dynamometers, the de Prony brake, was invented in 1821 by Gaspard de Prony. Since that time, in stride with advancements in machining processes, design, material availability and technology, dynamometers have become far more complex. Today, they are available in a variety of shapes and sizes, designed to meet usage and placement requirements. Common applications for dynamometers include: RPM and torque measurement of chain or belt drives, fluid power systems, diesel or gas systems, gearboxes, turbines and other engines used in aircraft, aerospace, marine, automotive and industrial processes.
Dynamometers use a variety of devices to take measurements. For example, many dynamometers use small instruments made only of a transducer, strain gauge and display screen. These devices turn torque force into an electrical signal that they can amplify, convert and display as a measurement. Other dynos use motor testers, which work by using voltage and current probes bound to motor input wires to connect the system to internal voltmeters, ammeters and ohmmeters. Motor testers may be used to determine direction, torque, voltage, power, current, cut-out speed and efficiency. Still others use a non-contact speed sensor that can measure motor shaft speed and thereby ascertain its number of rotations per minute.
Some Leading Manufacturers
Okemos, MI | 517-332-7256
We are a supplier of advanced dynamometer based test systems. We have over 25 years of experience providing quality dynamometers, test cell controls, and ancillary equipment. We provide products for a broad range of industries including automotive, military, heavy equipment, marine, performance racing, and more. We are located in Okemos, Michigan and our administrative, engineering, and manufacturing operations are housed in one facility. To learn more, call us today or visit our website!
Milwaukee, WI | 414-755-0040
At Taylor Dynamometer, we are more than just a dynamometer manufacturer; we are a company committed to solving problems, driving productivity, and serving our customers with truly exceptional products and services. With experience dating back to the 1920s, we have the technical knowledge, expertise, and proven product line to provide you with the dynamometer solutions you need. Everything we do is about making it easy for you to turn your testing challenges into success!
Novi, MI | 248-579-4295
Our goal at Go Power Systems is to provide you with the very best engine-testing equipment at affordable prices. We have over 50 years of experience in the dynamometer industry, and we have a variety of dynamometer solutions to meet your engine testing requirements. We offer small engine dynos, gasoline engine dynos, and diesel engine dynos. We also provide refurbished and rental dynamometers as well as dyno stands. For the best engine-testing equipment, look no further than Go Power Systems!
Jupiter, FL | 561-320-9162
We have a reputation for superior strength, reliability, and quality! We offer a comprehensive of range force measurement devices and dynamometers. Our products are used worldwide in industries like lifting applications, telecommunications, aviation, military, public utilities, and lift maintenance. We are an ISO 9001:2008 certified company and dedicated to providing our customers with quality products! Please contact us today via phone or through our website to learn more!
Novi, MI | 248-579-4295
Froude, Inc. has been a part of the dynamometers industry since 1877, when our founder invented the water brake dynamometer. That means we have well over a century of experience working with customers from all over the world, creating engine testing systems. Our selection of engine dynamometers includes: eddy current dynamometers, AC dynamometers, and standard, high speed, and low speed hydraulic dynamometers. Connect with us for the best dynamometers available.
Norwood, MA | 800-421-0246
Here at Tractel Group, we are committed to manufacturing high quality, heavy duty dynamometers. We design and manufacture several types of dynamometers, including engine dynamometers, electric motor dynamometers, chassis dynamometers, and agricultural dynamometers. Our dynamometers are field tested and proven, and with nearly 75 years of experience, you can count us to deliver a reliable dynamometer for your requirements!
There are two main types of dynamometers, which are both used frequently in the auto industry and in industrial and manufacturing processes. These are chassis dynamometers and engine dynamometers:
Chassis dynos measure automobile wheel rotation with computer software to determine engine torque. They are a type of torque tester, which is a stationary roller upon which vehicle wheels are placed and their rotation measured. Subsets of the chassis dyno include inertia dynos, which are particularly useful for continuous runs, and hydraulic dynos, which measure engine power with a cell filled with liquid to increase its load.
Engine dynos take measurements straight from the engine, with less computer intervention. They use some analogue gauges and dials, though their final measurement is calculated by a computer. They produce highly accurate, repeatable results. Because they require that an engine be removed from a vehicle before testing, engine dynos are quite popular with engine rebuilders, auto manufacturers and producers of race cars and other high performance vehicles. Their subsets include brake dynos, eddy current dynos, PTO dynos and hydraulic dynos. Brake dynos take measurements by observing engine response to application of variable loads as braking force attempts to slow it down. Eddy current dynos, another type of brake dyno, create a repelling or dragging force between a conductor and a changing magnetic field through the generation of a circulating electron flow.
Dynamometers continue to become more advanced and more automated all the time, and as this trend continues, the degree of human error decreases while measurement speed and accuracy increase. We can expect dynamometers to improve safety, efficiency and performance of engines for many years to come.