AVL STS PLU 131 Gasoline / 146 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 Rooms Media Conditioning Consumption Measurement Injection Testing Combustion Measurement Emission Analysis and Measurement In Vehicle Measurement TESTING EQUIPMENT SIMULATION TOOLS TESTING TOOLS CUSTOMER SERVICES Double-Injection TI-Variation (70 μs…500 μs) Measurement Injector Open Time Injection Quantity Seperation Time 1 312 304 296 288 280 5,6 4,8 4,0 3,2 2,4 1,6 0,8 0,0 2 3 4 5 6 7 8 9 10 0,8 0,6 0,4 0,2 0,0 mm3/str Q1 Q2 μs TI1 TI2 ms TO1_2 24 16 8 Time μs #13579 Current V Research and development are two application focuses in the field of internal combustion engines for the AVL Shot-to-Shot™ PLU 131 flow measurement system. In the course of such work, the shot quantity measurement and the details of the chronological rate curve for fuel injection provide valuable findings for the optimization of combustion behavior. Furthermore, shot quantity measurement has become increasingly widespread as part of production testing for fuel injectors. MEASUREMENT PRINCIPLE The dual PLU measurement principle provides STS with a very flexible hydraulic configuration of the measurement design due to the combination of a rotatory and a translatory positive displacement meter. As a result, the STS measurement system can be used on the high-pressure side of the injector (upstream) and in the low-pressure area (downstream). APPLICATION The versatility of STS provides an additional option of a dynamic injection quantity measurement at the operating single-cylinder engine and at the spray chamber, turning the AVL Shot-to-Shot™ PLU 131 flow measurement system into an indispensable measurement tool when characterizing injectors and developing spray image and combustion behavior. When looking at the example of stratified charge combustion with its cascades of subsequent injections, the importance of these measurement values becomes particularly clear. However, STS is now also used for 100 % series testing purposes in the manufacturing of injectors for homogenous operation. BENEFITS AT A GLANCE • Flexibility: Applications are possible on both the high-pressure side of the injector (upstream) and low-pressure side (downstream) • Versatility: Large measurement ranges between flow and injection quantities combined with high measurement accuracy for even minimal quantities Gasoline Upstream – Multiple-Injection Analysis: injection quantity and injector open time measurement of a double injection profile with variable separation time (TI = 70 … 500 μs) • Shorter development times: quick characterization of prototypes due to shot measurement at the operating engine or spray chamber • Relevant results: No influence on the injection system due to the instrumentation device principle (Δp = 0) GASOLINE INJECTION QUANTITY MEASUREMENT
Solutionskatalog2016_EN
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