Comparative Analysis of Energy Consumption according to the Change of Curb Weight of Electric Vehicles in On-Road Driving; 실도로 주행시험 기반 전기자동차 공차중량 변화에 따른 에너지 소비패턴비교 분석

초록

It is widely known that as curb weight increases, energy efficiency decreases. However, unlike traditional vehicles, electric vehicles use regenerative braking, which can reduce the impact of weight on energy efficiency. Therefore, this study conducted on-road driving tests using an electric vehicle and measured energy consumption. Four weight conditions(curb weight at +0 kg, 100 kg, 200 kg, 300 kg) were tested on the same driving route, while other factors, such as ambient temperature and driving speed, which could affect energy efficiency, were kept constant. Energy consumption was calculated using the data obtained from the vehicle, which included altitude, vehicle speed, motor speed, and motor torque. The results showed that, under the driving conditions used in this study, energy efficiency decreased by about 8.63 % from +0 kg to +300 kg. This implies that electric vehicles' weight significantly impacts energy efficiency. © 2024 Korean Society of Automotive Engineers. All rights reserved.

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