2WD EPA CHASSIS DYNAMOMETERS
Our 2WD EPA chassis dynamometers have the same durability, and accuracy our customers have come to expect from our products. Our dynamometer systems bring true flexibility to the world of laboratory testing—and due to their modular designs, various MIM (motor-in-the-middle) systems can be designed to suit your needs.
At the center of our flexible, modular design is the Model 4100 2WD MIM dynamometer, which can be used as a fixed or moveable dynamometer or combined with a second dynamometer as part of a Model 4500 4WD MIM test system.
Our Model 4100 MIM Dynamometers are comprised of two 48-inch diameter, chrome-plated steel rollers driven by an AC electric motor coupled to a digital AC vector drive to provide road load simulation. A unique trunnion bearing system allows for pure measurement of the torque delivered to the vehicle drivetrain without the need to compensate for bearing losses or the need to employ complicated, actively powered bearing systems.
The Model 5325 Moveable MIM Dynamometer is a Model 4100 mounted to a heavy-duty, welded sub-frame on linear bearings—a continuous loop, multi-section deck mechanism attached to the moveable dynamometer chassis allows it to be moved while providing a rugged platform on which to drive the test vehicle.
The Model 4442 Mileage Inline Accumulator Dynamometer is a medium duty machine used to test 2WD vehicles in the LDV/MDV weight classes. The MIM Chassis Dynamometer features an AC Flux Vector motor/absorber mounted between two dynamometer rolls.
4WD EPA CHASSIS DYNAMOMETERS
Our 4WD EPA chassis dynamometers have the same durability, and accuracy our customers have come to expect from our products. Our dynamometer systems bring true flexibility to the world of laboratory testing—and due to their modular designs, various MIM (motor-in-the-middle) systems can be designed to suit your needs.
At the center of our flexible, modular design is the Model 4100 2WD MIM dynamometer, which can be used as a fixed or moveable dynamometer or combined with a second dynamometer as part of a Model 4500 4WD MIM test system.
The Model 4500/4600 4WD MIM Dynamometer system consists of one fixed and one moveable Model 4100—heavy duty, welded steel frames provide rock-solid support for the mounting of machine components and can withstand loads of 10,000 lbs per axle.
A modular, multi-section sub-frame supports the two main frames—the moveable axle is supported by linear bearings, which ride on the subframe rail system. The fixed and moveable roll sets come with all of the specifications detailed in the specifications for the Model 4100.
Additionally, the moveable roll set can be adjusted to accommodate various vehicle wheelbases. Whether it’s a 2WD Model 4100 or a 4WD Model 4500, modularity is the hallmark of the MIM dynamometer test system and makes our design the perfect solution for a variety of test applications. Our system comes with excellent features designed to give our customers great value and a competitive edge:
- High Accuracy, Repeatability, Reliability
- Long Operating Life
- Compact Machine Sizes
- Advanced Technology with AC Vector Drive
- BEP 3rd Generation Digital Controller
- Easy-to-Use Operating Software
- Nominal Drive ratings from 200 to 400 HP w/o envelope changes
- Above deck lubrication & calibration
- Centering rolls, roll covers, and laser line projector options
- Easy to upgrade from 2WD to 4WD system.
Our inline dynamometers have the same durability, and accuracy our customers have come to expect from our products. Whatever the application, we has the solution. Wherever. Whenever.
HEAVY DUTY EPA CHASSIS DYNAMOMETERS
Our heavy duty EPA chassis dynamometers provide precise speed and load simulation conditions on the test specimen. Our machines simulate full load conditions in both speed and power control modes.
Our Heavy Duty EPA Chassis Dynamometers are integrated into the customer supplied test specimen—it provides precise speed and load simulation conditions on the test article(s). With the machine installed above floor level, the gearboxes are installed onto a main torque reaction frame using the customer supplied overhead crane and are held in place with a fixture or restraint system with reusable mechanical components.
Our system then simulates full load conditions in the speed and power control modes based on the specimen under test—this allows the gearbox to experience the same forces as it would in the field while monitoring temperatures, pressures, accelerometers and operating oil pumps and fans.
MILEAGE ACCUMULATORS
Our mileage accumulators are used to test vehicles in the LDV/MDV weight classes and allow for quick & efficient tests.
Our mileage accumulators are used to test vehicles in the LDV/MDV weight classes and allow for quick & efficient tests.
NOISE VIBRATION HARSHNESS DYNAMOMETERS
Our combination of modular design and the powerful control system used in our next generation of noise vibration harshness (NVH) dynamometers have the same durability, and accuracy our customers have come to expect from our products.
Vehicles have become so reliable that now consumers are making purchase decisions based on more subtle details like cockpit noise—this has driven automotive manufacturers to develop state-of-the-art NVH test facilities around the world. In order to serve this market more effectively, we have made a major investment to develop the next generation of NVH dynamometers. An example of this is our 50 dB pass-by NVH dynamometer that was installed at the PATAC (Pan Asia Technical Automotive Center) facility in the summer of 2006.
The machine at the PATAC facility consisted of four 1905 mm (75-inch) rolls, driven by independent, 200 hp drives. When a customer makes an investment of this magnitude it is important to ensure that testing time is maximized and setup time is minimized—it is equally important that the system has the flexibility to perform the testing required. Our next generation design addressed all of these concerns. First, it was designed with an automatic recalculating floor to allow for easy adjustment of the wheelbase without having to manipulate heavy floor planks. It also includes a neutral vertical load restraint system that can be easily adjusted to accommodate the full spectrum of vehicles. Finally, in order to provide the ability to simulate a variety of road surfaces, the rollers were designed to enable custom fit road shells to be attached for testing.
Additionally, our D3 control system provides the user with an integrated editor that enables them to quickly author and execute custom test sequences while maintaining all of the support for full manual control. The customizable monitors on our system is also another powerful feature—users can customize screens with the data that they need to monitor for the current vehicle under test and display it on multiple screens. This ensure that all of the important data is captured. All of these features are complemented by the ability to provide emissions class inertial simulation, making this an evolutionary step in dynamometer control systems.
POWERTRAIN DYNAMOMETERS
DRIVETRAIN | TORQUE CONVERTER | TRANSAXLE
We have systems for both medium and heavy-duty trucks, systems that achieve superior response times and provide precise control of torque, rpm, temperature, and pressure for exceptional repeatability and accuracy. We are the leading, worldwide supplier of electric chassis and drivetrain dynamometers for a variety of vehicle testing applications. We specialize in dynamometer test systems for passenger car, passenger truck, motorcycle and heavy truck platforms.
DRIVETRAIN DYNAMOMETER
Our drivetrain dynamometers provide a complete system for medium and heavy-duty trucks. Our machines feature one input electric AC Dynamometers and two output electric AC dynamometers. A GIF GSE2 gear-shifting and speed and force measuring unit and a GIF KBE clutch operating device are included for transmission gear shifting and clutch engagement and disengagement.
Our drivetrain dynamometer systems can be arranged in an inline configuration to perform transmission tests, a T-shape configuration for axle tests, and a combination-test configuration—this includes vehicle transmission, prop-shaft, and final drive axle. Additionally, our drivetrain dynamometers can perform road load simulations and traditional performance and durability tests.
TORQUE CONVERTER DYNAMOMETER
Our torque converter dynamometers provide precise control of torque, rpm, temperature and pressure for exceptional test repeatability and test data accuracy. Our efficient hot oil system supplies preconditioned oil to the testable machine and a closed loop controller takes in pressure and temperature signals from transducers near the test ports. These signals command proportional control valves to regulate temperature and pressure at the test specimen—measurement of mass flow through any given part is highly accurate.
Our drivetrain dynamometers can perform locked rotor tests, torque converter durability tests, torque converter efficiency tests, converter oil flow tests, forward and reverse flow tests, and leakage oil measurement tests. Our system can also be programmed to perform customer-defined tests.
TRANSAXLE DYNAMOMETER
Our transaxle dynamometers are built with advanced motor and drive technology and utilize AC dynamometers to achieve superior response times as compared to those that utilize DC dynamometers—this results in much shorter test cycle times. An added benefit of AC dynamometer technology is the ability to electrically lock and unlock the output dynamometer during the testing sequence, allowing torque converter oil to be circulated and cooled between data sample cycles. Additionally, our transaxle dynamometers allow for precise control of torque, RPM, temperature and pressure, which means exceptional test repeatability and test data accuracy.
Our transaxle dynamometers can perform transmission efficiency and durability tests, performance and durability tests of gear shifting unit and synchronizer, performance and durability tests of axle gear set, and differential gear and differential case tests. Our system can also be programmed to perform customer-defined tests.
WIND TURBINE DYNAMOMETERS
Our wind turbine dynamometers allow for full load testing of the gearbox up to 14 MW using either regenerative input/output drives and motors, or the four square method.
Developed for Wind Turbine Drivetrain Testing
The wind powertrain dynamometer control system incorporates a Burke E. Porter control system which has been developed for over 30 years of dynamometer system solutions, EPA certification, and holds a US Patent for road load simulation. This system is complete with operator interface computer, dynamometer control computer, test cell host computer, and data acquisition.
Host Computer – Cell Controller The key feature of the BEP WTG test system control solution is the integrated operation of all test stand, test article, and test DAQ and reporting systems in one easy to use operator interface, as well as remote monitoring, and diagnostics.
A deterministic QNX real time operating system (as used by Cisco and in Nuclear Power Plant Control Systems), is used as the central processing unit.
Test Cell Interface Screen:
Integrated B&K® Vibration Measurement, and BEP automated post processing:
The post-processing WTG test report is generated for each gearbox test showing the kinematic frequencies and amplitudes for the expected gear mesh of each stage. This data is linked to the speed and torque, as well as monitored temperatures, pressures, and oil cleanliness data. The entire multiple step test and reporting process can be done with a few clicks of a mouse.