Aircooled eddy current ed series engine dynamometers. Dyno one manufactures new eddy current dynamometers from the ground up. Eddy current dynamometer technomech is the leading manufacturer and supplier of the engine test system equipments. If a planar defect does not cross or interfere with the current then the defect will not be detected. So, rotational movement by braking is coverted into heat energy. Drive source international dsi is the worlds leading manufacturer of eddy current adjustable speed drives, brakes and controls. Product manuals adjustable speed eddy current drives. Eddycurrent brake dynamometers wb series are ideal for. The narrow yet durable design, small footprint, and the exclusive material and construction technique ensures many years of service. Eddycurrent brakes provide increasing torque as the speed increases, reaching peak torque at rated speed. A wide range of eddy current dynamometers, the optimum.
Eddy current dynamometers are manufactured in two types. In these wattmeters, the field produced by the current carrying moving coil tries to come in line with the field produced by the current carrying fixed coil, and a deflecting torque is exerted on the moving system. Pdf sound intensity mapping of an engine dynamometer. A dynamometer is a load device which is generally used for measuring the power output of an engine. Powermag eddy current adjustable dynamometer absorb power, torque and speed characteristics with a unique hystersics braking system which provides frictionless torque loading 0% to 100% constantvariable torque load independent of shaft speed. Eddy current dynamometers dynos providing precise control and low maintenance. Eddy current brakes provide increasing torque as the speed increases, reaching peak torque at rated speed.
Itworks on the principle of eddy currentgeneration that oppose the change in magnetic flux. Dyno one is the oem for tr, sr and li series eddy current dynamometers. All parts are manufactured and poured to dyno one specifications with the latest technology and engineering. Eddy current dynamometers dynos are simple, lowcost, compact, torque measuring equipment for a large spectrum of test purposes and applications. Wbpb 43 series eddycurrent and powder dynamometers magtrol. The primary elements of powermag adjustable dynamometer are an eddy current clutch, a tachometer, and a separate solid state controller. Final product for the senior design class at san diego state university. They are available in standard and high speed models with many speed and torque versions. Eddy current brake dynamometers wb series are ideal for applications requiring high speeds and also when operating in the middle to high power range. When the rotor is rotated, an eddy current is produced because of a magnetic flux set up by field current in the electromagnet. If possible, these absorption units are refurbished and offered for resale, individually, or with a new data acquisition and control system. Precision strain gauge type load cell are used for sensing the torque developed by the engines.
The working principle of eddy current dynamometer is shown in the figure2. New castings, new shaft, new rotor, new coil, new bases, new pedestals. An eddy current dynamometer ec dyno is the most popular type of dynamometer used in chassis dyno construction. The dynamometers have low inertia as a result of small rotor diameter. These systems integrate with personal computers running superflows windyn software for expanded data storage and manipulation. Overview superflow offers a broad selection of technologically advanced eddy current absorbers which. Eddy current dynamometers eddy current dynamometer eddy current dynamometer total system being tested with saj dyno eddy current dynamometer eddy current dynamometer test beds cng engine test bed.
Both manual and host controlled operation are possible. Eddy currents aregenerated when a conductor moves in changing magnetic flux. The working principle of eddy current dynamometer is shown in the figure below. Ag250 dynamometer page 1 of 7 specification ag250 eddy current dynamometer 1. A dynamometer or dyno for short, is a device for simultaneously measuring the torque and. Economical aircooled eddy current chassis dynos from taylor, which save on costs because they dont require a water recirculation system for operation, are an excellent choice for quick power checks and other short tests of medium or heavyduty single or tandemaxle trucks and buses. Typically aircooled, there are watercooled versions of the dynamometer used primarily for very high horsepower or hightorque applications. The current through the stator becomes heat on the stator. Dynomite aircooled eddycurrent absorber product overview. The material must be able to support a flow of electrical current.
Major technical parameters of eddy current dynamometer. However, unlike friction brakes, in which the drag force that stops the moving object is provided by friction between two surfaces pressed together, the drag force in an eddy current brake is an electromagnetic. An eddy current brake, also known as an induction brake, electric brake or electric retarder, is a device used to slow or stop a moving object by dissipating its kinetic energy as heat. Our products fulfill your needs for testing industrial, automotive and motorcycle engines. Objective to perform engine performance test of high speed low torque engines as per automotive engine test according to is. The scanning eddy current dynamometer secd is based on the measurement of the force generated by a magnetic tip oscillating in close proximity to a conducting thin film glued to a highq. Compared to an equally sized ac dynamometer with a 100 ms response time at over twice the price, the ed4010 is an excellent choice. Dynamometer absorbs horse power by changing this heat energy by cooling water.
The developed torque in these dynamometers diminishes with a reduction in speed with no torque developed at zero speed. This makes testing of fibre reinforced plastics unfeasible. In addition to our standard, water brake performance engine dynamometers, superflow also offers a wide range of advanced eddy current engine dynos for precise engine testing. The air cooled eddy current dynamometer delivers an exceptional. Eddy current dynamometers eddy current dynamometer. The torque measurement of eddy current dynamometer is according to the principle of same amount of applied torque and reaction torque with opposite direction. Eddy current dynamo meter used to measure engine torque and power. Our eddy current dynos are simple, cost effective, torque measuring devices for a large range of test purposes. The medium of torque transmission in eddy current dynamometers is a controlled magnetic field generated by a stationary coil. Technical specification eddycurrent dynamometer w series. Eddy current dynamometer working principle, sales powerlink. Dynamatic watercooled eddy current brakes model wb620 through wb63 and models wb6163 through wb63 eddy current ces press drives 4.
Superflow eddy current engine dynamometer power test dyno. Mustangs ed series aircooled engine dynamometers are the answer for most engine testing applications due to their excellent. A company founded by the winthers brothers, dynamatic corporation, manufactured dynamometers in kenosha. When the rotor rotates, eddy currents are produced in the stator due to magnetic flux. Sometimes we will acquire a used dyno from salvage, at a closeout auction, or even by donation. It is one of a range of dynamometers that have been designed specifically for testing engines and their. The precision strain gauge load cell torque measurement system provides high accuracy torque measurement for. Our range of ec dynamometers is based on our knowhow in mechanical engineering, measurement and design of transmission shafts. Eddy current dyno packages are available turn key, mechanical only or absorber only. A precise, lowmaintenance, rapid response and repeatable alternative to water brake technology, taylors eddy current engine dynos provide lowinertia, air or watercooled operation for testing engines up to 966 hp 720 kw in a range of markets.
Rated from 5 to 2,500 hp 4 to 1,864 kw wet and dry gap configurations. So the torque can be measured by the dynamometer rotating torque i. Refurbished dynos current inventory go power systems. Dynamometer type wattmeter working your electrical guide. The flow of eddy currents is always parallel to the surface. Eddycurrent dynamometers wb series dynamometer magtrol. We often will take a used dynamometer absorption unit in trade as part of a new system order.
Eddy current dynamometers require an electrically conductive core, shaft, or disc moving across a magnetic. A wide range of eddy current dynamometers, the optimum solution for your performance and endurance tests. It consists of a stator on which are fitted some electromagnets and a rotor disc made of copper or steel and coupled to the output shaft of the engine. Water cooled eddy current dynamometer and self or forced air cooled eddy current retarder. Compared to the water cooled eddy current with 500 ms response time and the water brake with a 1 second response time, the air cooled eddy current is by far the best choice. Eddy current engine dynamometers superflow offers a range of watercooled eddy current engine dynamometers ranging from hp to 966 hp 10 kw to 720 kw. All superflow dry gap eddy current absorbers can be interfaced with superflow data acquisition and control systems for complete engine, dynamometer and throttle control. Several kinds of dynamometers are common, some of them being referred to as breaks or break dynamometers. It comprises of a stator with some electromagnets and a rotor disc coupled with engines output shaft made of steel or copper. Schenck pegasus gmbh technical specification eddycurrent dynamometer w series h. Therefore, for the full braking moment of the dyna mometer, a determined minimal speed is required. Application systems eddy current dynamometers and engine. The whole unit is supported by a machined base to be fixed to the floor. Objective to perform engine performance test of diesel engines as per automotive engine test according to is.
Eddy current dynamometers dynamometer services group. Ppt eddy current dynamometer powerpoint presentation. Senior design eddy current dynamometer for fsae youtube. Timehonored and wellrespected manufacturers of eddy current dynamometers, were acquired by dyne systems in 2002. They are also ideal for restoring obsolete or upgrading inertiaonly dynamometers. The eddy current dynamometer was invented by martin and anthony winther around 1931, but at that time, dc motorgenerator dynamometers had been in use for many years. Eddy current dynamometers dynamometer eddy current. Eddy current dynamometer 1 eddy current dynamometer by 2 eddy current dynamometer. Mw512 engine dynamometer mw512 eddy current dynamometer example model shown image may not depict all standard included components recommended accessories driveshaft 1610 torsional coupling 1610 flywheel adapter plate kit driveshaft guard subbase kit engine cart air or electric starter engine cooling column. This is the final run with an electric motor hooked up to the dyno to spin the rotors and demonstrate the electronics and. An eddy current dynamometer uses an electric core moving across a magnetic field to produce the required resistance needed to test an. The air gap ag range of froude eddy current dynamometers has been designed to be compact, robust and to allow easy maintenance. Eddy current dynamometers are used for testing engines from 5hp to hp capacity.
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