Find dynamometers including dynos, industrial dynamometers, dynamometer scales and more. From brake testers, brake dynamometers, chassis dynamometers to engine dynamometers, you will find the dynamometer you need. Use the time-saving Request for Quote tool to submit your inquiry to all the dynamometer manufacturers and suppliers you select.
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 and DC motoring dynos and Water Brake Systems. Our products all include the durability and quality customers expect from SAKOR.
At Superior Scale and Instrument, we can supply you with mechanical and electronic dynamometers. Our mechanical dynamometer proves its versatility in weight, traction and tension measuring. The electronic version, Edxtreme, provides lbf, kgf and Newtons, or custom units of measurement.
Integrated dynamometer & data acquisition systems for testing engines, motors, transmissions and other rotating equipment. OEM for Midwest and Dynamatic eddy current dynamometers, DyneSystems digital dyno and throttle control, AC and DC dynamometers, test automation software, test cell PLC and more.
AW Dynamometer has been developing quality and precise dynamometers and accessories since 1957. We have over 20 models of dynos to choose from—specializing in agricultural, electric motor, engine and chassis dynamometers. Our R&D is always busy working to better serve our customers needs.
Dynamometers, also called “dynos,” are
machines used to measure the power of an engine. More specifically, the
torque of an engine is determined by a complex system of absorption and
reaction. Dynamometer manufacturers construct their products using basic
components: frame, engine mounts, absorption unit, which is usually some
sort of roller or drum, heat exchanger and torque measuring device. Water
or oil brakes are needed for certain types of dynamometers to provide
proper resistance and absorption. Engines are hooked up to the dynamometers
in various ways and then run. The dynamometers simulate actual conditions
by allowing the engine to run at long intervals and at peak levels without
ever having a vehicle in motion or an operator inside a vehicle.
The commercial auto industry relies on dynamometer manufacturers in the
development and testing of their vehicle engines. Those who specialize
in the rebuilding and customization of engines also use dynamometers
extensively. Makers and designers of high-performance vehicles, such
as race cars and speed bikes, use dynamometers for similar reasons as
those of the commercial auto industry and as part of the recalibration
process of an engine, which has been used in race environments. Dynamometers
are also sometimes used in the testing of other types of internal combustion
engines used for industrial purposes, such as engines in water pumps
and large earth-moving tractors.
Most modern dynamometers are computer controlled, and allow the operator
to select the points and range of speeds through which an engine’s
torque is measured. The operator then opens the throttle of the engine
and the dynamometers react with an appropriate amount of load to maintain
the chosen condition. The horsepower and other measurements are read
out directly to a real time gauge and from this the torque is usually
calculated. Analog gauges are still used to determine the torque of an
engine, but operators of dynamometers need some knowledge of physics
to come up with the final reading.
When looking at dynamometer manufacturers, consider important performance
specifications: torque capacity, maximum rotary speed and power absorption.
For chassis
dynamometers, keep in mind the maximum linear speed on chassis
style. The torque capacity is the highest continuous torque transmission
for which the shaft is designed. The maximum rotary speed is the highest
rated rotational speed under load. The highest rotational power at which
dynamometers can be operated while still running within specifications
is the maximum rotational speed. This speed is often regulated by the
braking technology and configuration. In terms of chassis-style dynamometers,
the highest linear speed of the vehicle under test is rendered in miles
per hour.
Brake (or steady state)
dynamometers are good for measuring the torque of engines, which
remains constant in output, such as in tractors. These machines are
declining in use for testing racing engines because of the way the brakes
tend to overheat and the oil or water used to pump the brake becomes
too thin as the engine changes speeds.
Brake testers are dynamometers where braking drag is applied.
Chassis dynamometers
are a sub-type of engine-torque testing device, which measures the output
of torque at the wheel. The wheels of a vehicle either spin a drum or
a series of rollers, which are attached to the dynamometer, or the wheels
are removed and the wheel hub is mounted directly to the testers' input
shaft.
Dyno is a machine that measures the power of an engine.
Engine dynamometers are another sub-type of torque testing machines, which are hooked
to the engine directly as opposed to the wheel chassis. Research and
development departments at workshops and auto manufacturing plants use
this style of testing, as the engine can be tested without being inside
a vehicle.
Inertial dynamometers
are becoming the most widely used type of dynamometer in the torque-testing
sectors of both the commercial and racing automobile industries, because
they provide real-world results. The inertia of the roller drums is
measured to calculate torque, revealing the rate at which an engine
can accelerate a known rotational inertia from one rpm to another.
Repair grade dynamometers
are chassis devices used to simulate actual road driving conditions
on a motor vehicle. Repair grade dynamometers consist of rollers, power
absorbers and inertia simulation, either mechanical or electrical.
Torque testers
function basically the same way as dynamometers do, but are designed
to test the torque of smaller mechanical devices other than engines.
Devices, such as precision screwdrivers and wrenches, need to have their
torque tested to ensure quality function.
Dynamometers Terms
Ambient Temperature
– Temperature of the surrounding medium.
Base Line –
A vibration reading of a piece of equipment in good operating condition.
The baseline becomes a reference point for testing and monitoring.
Breakdown Torque – Also known
as maximum torque or pull-out torque, the highest torque that an AC motor
will produce with the application of rated voltage and frequency, and
no abrupt drop in speed.
Chassis –
The part of a motor vehicle that includes the engine, the frame, the suspension
system, the wheels, the steering mechanism etc., but not the body.
Code Letter –
The letter on AC motor nameplates that signifies the locked rotor kilovolt
amperes per horsepower at rated frequency and voltage.
Dynamometer –
A machine that measures the power by absorption derived from an internal
combustion engine.
Full Load Speed
– The R.P.M. for an engine or generator, which is available at torque
capacity.
Full Load Torque
– For an engine or generator, it refers to the torque necessary
to produce its rated horsepower at full load speed.
Horsepower (hp)
– Unit of rate of doing work. One horesepower equals about 550 foot-pounds
per second or 746 watts.
Inertia –
Any motion or movement that is not in a straight line but remains constant
in velocity.
Locked Rotor Torque
– The lowest torque that at an engine will produce from a standstill
position, as measured from all angular positions of the rotor, with rated
voltage applied at rated frequency.
Output – The
product of the torque available to do work times the rated R.P.M.
Rotor – The rotating
part of a motor or engine.
R.P.M. (Revolutions Per
Minute) – Unit of measurement to determine power and torque.
Throttle –
The act of acceleration.
Torque – The
measure of the force applied to produce rotational motion, usually measured
in foot-pounds.
Transmission – The
gears that transmit power from an automobile engine via the driveshaft
to the live axle.
Trending – A reading
of the variation in the measurement of data over no less than three data
measurement intervals.
Velocity – The rate of change of position
in relation to time.
Wide Open Throttle (WOT)
– The position of the pedal that allows the maximum amount of air
to pass into the intake manifold.
