SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS Electrification Battery Test Systems E-Motor Test Systems Power Electronics Test Systems Component Test Systems MBD on the virtual testbed Engine Test Systems End of Line Test Systems Real Life Test Systems Driveline Test Systems Fuel and Lube Test Systems Emission Test Systems and Certification Vehicle Test Systems Racing Test Systems TESTING EQUIPMENT Dynamometers and Actuators Vehicle Testbeds Test Cell Mechanics and Control Room Media Conditioning Consumption Measurement Injection Testing Combustion Measurement Emission Analysis and Measurement In Vehicle Measurement TESTING EQUIPMENT SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES AVL Dynamometers and Actuators APPROACH DYNAMOMETERS AND ACTUATORS The pressure of shortening the development time with a higher level of complexity in testing is increasing, as is the demand on test cells and dynamometers. Dynamometers are the main element in a test cell. They are the components that are exposed to the hardest working conditions. The range of performance of modern engines demands dynamometers that are of the highest quality technologically, but are also highly reliable and equipped with precise measurement devices. AVL dynamometers meet these requirements in an optimal way. BENEFITS AT A GLANCE • Dynamometers for different applications are available • Test cell with fitted design results in a long life span and low maintenance • Fast torque response is provided by rotorflux vector control of the stator current • Low mass moment of inertia allows a high-speed gradient • IGBT converters with random pulse pattern reduce the electrical noise in the machine • Recuperation of energy especially in endurance tests saves costs and energy • Compact and maintenance-friendly design TASK Different test procedures and different engines require different dynamometers. Engine testing with the original vehicle exhaust system requires space where the dynamometer is normally mounted. A dynamic dynamometer is needed to run dynamic test cycles. The development of intelligent powertrain components through to hybrid systems requires a load of all components, which is comparable to the road test. Therefore, the inertia of the dynamometer should be equal to the inertia of the vehicle’s wheel. Combustion engines with high power are also calibrated and tested in low power ranges. Therefore, the requirements for torque measuring systems and their accuracy increase. Torque peaks should not influence any technical values of the torque- measuring system. Measuring units can be changed, but the dynamometer must run with low maintenance during its whole lifetime. In case of disruption, the fast delivery of spare parts and well trained engineers must be available in order to support the customer. It must be possible to upgrade dynamometers in the future. / 78
Solutions Katalog 2015_E
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