Emissionen effizient reduzieren Kalibrierung im virtuellen Fahrversuch

Next Level of Testing - Extended Frontloading through Latency-optimized EiL Test Benches

“…This makes it possible to separately evaluate and optimize the effects of individual hardware and/or software modifications on individual operating states and emission events of the combustion engine in interaction with the virtual vehicle concept and operating scenario. To implement an EiL test scenario, an internal combustion engine with the appropriate engine ECU and the complete exhaust aftertreatment system that is comparable to the one of the real vehicle is installed on a highly dynamic engine test bench [2][3][4][5][6][7][8][9][10].…”

“…Operating real-time simulation systems and real component test benches in the EiL context of a dynamic engine test bench essentially requires a discretely controlled exchange of speed and torque information [2][3][4][5][6][7]. The quality of the information exchange, taking into account the existing control architecture, significantly influences the quality and validity of the test results [5,11].…”

“…For this purpose, the automation system of the highly dyna mic engine test bench is extended by a powerful HiL realtime computer, such as a dSpace Scalexio system. The HiL platform computes accurate and real-time-capable models substituting the missing vehicle components as well as additional models for emulating the in fluence of the vehicle environment (driving resistance including road topology) and driving behavior [5][6][7]11].…”

“…The powertrain consists of a six-speed dual-clutch transmission that is physically modeled. The open, Simulink-based Automotive Simulation Models (ASM) tool suite was used to simulate the 3-D vehicle dynamics [2][3][4][5][6][7].…”