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A Study on Evaluation Method of Fuel Economy, Electric Power Consumption and Emissions of Electrified Heavy-duty Vehicle by Using “X in the Loop Simulation”
Technical Paper
2021-01-1253
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
To reduce carbon dioxide emissions, the use of vehicles operating on electrification technology, such as plug-in hybrid electric vehicles (PHEVs) and electric vehicles (EVs) is rapidly increasing. A similar trend also exists in the field of heavy-duty vehicles, such as trucks and buses. When evaluating—via the certification test method—the fuel efficiency, electricity efficiency, and exhaust gas emission of heavy-duty vehicles that have many batteries, the powertrain, including the batteries, is modeled and investigated. However, such modeling is difficult because batteries deteriorate, and the ambient temperature fluctuates during vehicle operation. To resolve this issue, we developed a new evaluation method that enables real-time cooperative control of actual batteries and hardware-in-the-loop simulation (HILS). We demonstrated easy, high-precision tests of EVs and PHEVs under various ambient temperatures using a new evaluation method that utilizes an expanded HILS (“X” in the Loop Simulation).
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