PARTICLE COUNTING / 152 SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS 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 SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES The figure shows the results of an NEDC test with two different vehicles. The number of particles of vehicle A has significant peaks in comparison to vehicle B. Despite being the lowest concentrations, the emission differences can be measured with the AVL Particle Counter. AVL Particle Counter BENEFITS AT A GLANCE • Fulfills all PMP requirements (UN-ECE-Regulation 83 & 49) without any time-consuming adjustments • Long-term stability and high reproducibility shown in official and customer test campaigns • Robust and precise dilution system without particle size dependency • Accurate measurement due to the immediate dilution at the sampling position • Less service and maintenance effort • Small dimensions and optimized system configuration for easy transportation and fast installation in the testbed • Automated startup features make the system ready for measurement within the shortest possible time 600 800 1000 600 800 1000 Time s Engine A Engine B Engine A Engine B 1200 500 700 900 1100 Opacity Tailpipe Online Particle Number Online Vehicle Speed 100 200 300 400 Time s 1200 500 700 900 1100 Opacity Tailpipe Online Particle Number Online Vehicle Speed 100 200 300 400 Particle emissions in modern IC engines are approaching a range in which they are only detectable with highly sensitive instruments. The current mass-based methods for the detection of emissions from modern Euro 5 engines are reaching their detection limits, especially in measurements behind a diesel particle filter (DPF). The AVL Particle Counter complies with current UN-ECE-R83 legislation, which includes requirements for measuring the particle number per kilometer. The system measures the number concentration of all non-volatile particles in the exhaust and allows for sampling from a CVS system, a partial flow dilution tunnel or directly from the raw exhaust. MEASUREMENT PRINCIPLE The counting of particles with a condensation particle counter according to PMP requires a complex conditioning system (volatile particle remover, VPR) consisting of two dilution stages which provide a high and stable dilution and an evaporation tube to remove all the volatile particles. The first dilution stage is the core of such a system and, therefore, AVL has developed a chopper diluter to ensure a very high, size-independent dilution which also makes it possible to use the system to sample from raw exhaust gas during R&D. Particle losses are minimized by mounting this diluter immediately at the sample position. Due to the special design of the VPR, it is also easy to clean and the purging of the system is done automatically during startup. APPLICATION • Certification according to UN-ECE-R83 and UN-ECE-R49 procedure • Applications in research and development • Applicable on engine and chassis dynos • Sampling from CVS systems, partial flow dilution tunnels or directly from raw exhaust • Suitable for diesel and gasoline engines
Solutions Katalog 2015_E
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