주행 조건이 하이브리드 자동차의 연비에 미치는 영향 연구 = The Influence of Driving Conditions on Fuel Economy of the Hybrid Electric Vehicle

다국어 초록 (Multilingual Abstract)

This is a study to analyze the influence of driving condition on fuel economy for hybrid electric vehicle. In order to accomplish this, vehicle speed, engine speed, battery current and voltage, SOC (state of charge), motor speed and torque, generator speed and torque, engine coolant temperature etc. were measured in real time. The tests were carried out under different driving cycles which are UDDS (Urban Dynamometer Driving Schedule), HWFET (Highway Fuel Economy Test), KOREA CITY mode and on-road driving, and also under various test conditions such as different initial SOC (SOC 40%, SOC 56%, and SOC 80%), with or without regenerative braking, and different engine starting conditions (cold start or hot start). Generally, conventional gasoline engines show a poor fuel economy at stop and go driving conditions, because braking energy is wasted and the engine is operated mainly in low efficiency areas. However, as hybrid vehicles are controlled at the maximum engine efficiency region by a combination of both motor and engine, and also utilize the regenerative braking, thus, the effects of driving cycles on fuel economy is minor.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 실험장치 및 방법
• 3. 실험결과 및 고찰
• 4. 결론
• References