OPACITY MEASUREMENT AVL Opacimeter / 178 SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS TESTING EQUIPMENT Dynamometers and Actuators Vehicle Testbeds Test Cell Mechanics and Control Rooms Media Conditioning Consumption Measurement Injection Testing Combustion Measurement Emission Analysis and Measurement In Vehicle Measurement SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES APPLICATION The AVL Opacimeter can be used on engine testbeds and on chassis dynamometers. The device is already preconfigured to automatically run the legally required tests ECE-R 24 – EEC 72/306, HD Euro III, Euro IV and Euro V ELR test, ISO 8178, and SAE J 1667. As a partial-flow system for the online measurement of the exhaust gas opacity of diesel engines, the AVL Opacimeter is a unique system that satisfies not only legal standards but is also a perfect tool for meeting the demands of engine development and production. Time s BENEFITS AT A GLANCE • High measurement dynamics for transient test runs • Pre-programmed test cycles, such as Euro ELR or ECE-R24 • High measurement value resolution and signal stability thanks to the conditioning of all essential parts (N = 0.1%, k = 0.0025 m-1) • Also suitable for exhaust gas back pressure of up to +3,000 mbar relative pressure (with high pressure option) • Low maintenance costs due to the robust design Recent emissions legislation is increasing requirements for transient test procedures. To comply with tough future emission limits, it is also necessary to monitor an engine’s particulate emissions during transient operation even in the early stages of the engine R&D process. The development of modern diesel and gasoline engines requires a dynamic measurement instrument with high resolution. MEASUREMENT PRINCIPLE The AVL Opacimeter measures the opacity of contaminated air, in particular of diesel exhaust emissions. A measuring chamber with a defined measuring length and non-reflecting surface is filled homogeneously with exhaust gas. The loss of light intensity between a light source and a receiver is measured, and the opacity of the exhaust gas is calculated based on this. The very fast response time of 0.1 sec, the easy-to-use data evaluation and the ability to use the device upstream and downstream of a DPF (diesel particulate filter) make the AVL Opacimeter a perfect tool for development tasks where extremely fast measurement is the key. Example: opacity as a percentage during a prescribed test cycle (ELR – European Load Response test) Opacity Speed Torque Opacity % Torque Nm Speed rpm 50 40 30 20 10 0 0 60 120 180 240 300 360 2500 2000 1500 1000 500 0 Available online via AVL ePRODUCTS https://shop.avl.com
Solutionskatalog2016_EN
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