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조석호(Seokho Cho),고상철(Sangcheol Ko),이대엽(Daeyup Lee) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
Due to global warming, various CO₂ reduction policies are being implemented, especially in countries that emit a lot of greenhouse gases. In particular, in order to reduce CO₂ generated from heavy duty vehicles in the transportation sector, not only Korea, but also the United States, Europe, Japan, and China have introduced GHG and fuel economy regulations to gradually increase emission regulation standards. In addition, the U.S. and Japan began to regulate greenhouse gas and fuel economy for trucks and buses, and Europe has been monitoring CO₂ emissions since 2019. Korea is also preparing to introduce regulations. Due to the large variety of vehicles and the heavy weight of the vehicle including the load, it is difficult to test the chassis dynamometer and the engine dynamometer test does not reflect the state of the vehicle. Accordingly, in Europe, the United States, and Japan, CO₂ is calculated by computer simulation. Therefore, in this study, the accuracy of the simulation was investigated by comparing and analyzing the CO₂ results calculated using the European (VECTO) and domestic (HES) heavy duty vehicle greenhouse gas simulation tools with the real road results.
실도로 주행시험 특성 평가를 위한 차대동력계 단축 사이클 개발
김주일(Jooil Kim),박정배(Jeongbae Park),천민우(Minwoo Cheon),이대엽(Daeyup Lee),고상철(Sangcheol Ko) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
In order to complement and strengthen the emission test method for light duty vehicles, Real Driving Emissions (RDE) test method that measures the exhaust emissions on roads has been used additionally with test cycle at chassis dynamometer both in Europe and Korea. At chassis dynamometer, variables can be tested in a controlled experimental environment. However, under actual driving conditions, there are many variations in the fuel consumption and emission of a vehicle depending on driver’s vehicle control characteristics as well as traffic conditions. As the emissions regulations become more stringent, car manufacturers need more time and effort to develop and test their vehicles. Thus, developing a data evaluation method to evaluate the normality of test conditions is an important challenge. A goal of this study is to develop a test cycle that can be implemented indoors using a chassis dynamometer for the RDE test, which takes less time and effort than outdoors.