AVL STS PLU 131 Gasoline / 148 SIMULATION SOLUTIONS TEST SYSTEM SOLUTIONS Electrification ��atter������e��t��������te���� E����otor����e��t��������te���� ��o��er��Electronic���� ��e��t��������te���� ��o����onent�� ��e��t��������te���� ��������on��t��e����irt��al�� te��t��e�� En��ine����e��t��������te���� En����o������ine�� ��e��t��������te���� ��eal����i��e����e��t��������te���� ��ri��eline����e��t��������te���� ����el��an����������e�� ��e��t��������te���� E��i����ion����e��t��������te������ an������ertification ��e��icle����e��t��������te���� ��acin������e��t��������te���� TESTING EQUIPMENT ����na��o��eter���� an������ct��ator�� ����icle����e��t��e���� ��e��t����ell����ec��anic������ an������ontrol����oo���� ��e��ia����on��itionin�� ��on��������tion�� ��ea����re��ent Injection Testing ��o��������tion�� ��ea����re��ent E��i����ion����nal����i���� an������ea����re��ent ��n����e��icle�� ��ea����re��ent 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 com��ustion engines for the AVL Shot-to-Shot™ PLU 131 ��ow measurement system. In the course of such work, the shot quantity measurement and the details of the chronological rate curve for fuel injection provide valua��le findings for the optimization of com��ustion 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 ��e��- i��le 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 ��ow measurement system into an indispensa��le measurement tool when characterizing injectors and developing spray image and combustion behavior. When looking at the e��ample of stratified charge com��ustion 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 ��etween ��ow 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 in��uence on the injection system due to the instrumentation device principle ����p �� 0�� GASOLINE INJECTION QUANTITY MEASUREMENT
Solutionskatalog_2017_E
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