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 Chassis Dynamometers 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 Dynamic Injection Measurement Technology APPROACH With the introduction of the diesel CR and DGI technologies, the requirements with regards to flow measurement for engine development have changed over the course of the last two decades. Both in the field of research and development and in the field of production, the continuous fuel consumption measurement has been complemented by cycle-related injection quantity measurements and the analysis of the corresponding rate curve. Driven by the goals of reducing fuel consumption and emissions, we are currently experiencing a new spurt of innovation in the field of combustion development with a major impact on injection technology and injection measurement technology. As a pioneer in applications for common rail and GDI technologies, AVL remains the market leader in dynamic injection measurement systems with the Shot-to-Shot™ measurement technology developed for this purpose. BENEFITS AT A GLANCE • Shorter development times: cycle-synchronous correlation of injection quantities and time behavior with the relevant system and engine parameters • Reduction of measurement times: high measurement accuracy reduces the measurement period on the testbed or in the production line • Protection of development steps: precise analysis, for example of minimal quantities and multiple-injections, as components of the indicating data collection • Robust development tool: efficiency due to universal applicability and high long-term stability of the calibration TASK Decreasing exhaust gas emissions limits and the requirements for continuously lower fuel consumption values are currently the primary driving forces for the further development of engine technology. The strategy and the precise control of the fuel combustion play a central role. With different focuses, this in turn requires the precise analysis of the injection rate curve related to the engine cycle: • The development and production of capable injectors and injection systems require the precise analysis of the opening and closing behavior. Testing the injector during production requires high precision and long-term reproducibility of the injection quantity measurement. • Today, combustion strategies with layer loading and multiple-injection sequences play an important role in the development of GDI internal combustion engines. The highest measurement resolution of the low separation times at partially low injection quantities pose extreme challenges for the measurement technology here. • The exact optimization of performance, consumption and exhaust gas emissions on diesel engines has become an extremely complex task due to the application of different components for exhaust gas aftertreatment. The precise quantity measurement of multiple-injections down to the smallest partial injections has to be implemented in the overall engine map in realistic conditions. The Shot-to-Shot™ measurement technology is used in all examples mentioned above, and thanks to its superior characteristics, it contributes to providing the products and services of our customers with a competitive advantage. / 122
Solutionskatalog2014_E
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