| 제목 |
<기술논문> 기어 물림 상태의 타행 주행 저항을 이용한 엔진 운전 조건의 분석 |
| 분야 |
엔진 및 연소 |
| 언어 |
Korean |
| 저자 |
심범주(경희대학교), 박경석(경희대학교), 민병두(쌍용자동차), 박준수(쌍용자동차) |
| Key Words |
Coastdown test(타행 주행 성능 평가), Gear engaged condition(기어 물림 상태), NEDC(신 유럽 주행모드), Efficiency of drivetrain(구동계의 동력 전달 효율), Brake work(제동일) |
| 초록 |
Conventional method to transform vehicle driving condition to engine operation mode is to use vehicle road load under neutral gear and mechanical efficiency of drivetrain. But this method requires additional measurement of efficiency of drivetrain on a test rig. And this measurement is normally done at fixed speed and thus estimated accuracy of engine operation mode is not considered to be high enough. This study suggests new method to calculate engine operation mode for prescribed driving mode such as NEDC using vehicle coastdown test under gear engaged condition without measurement of mechanical efficiency of drivetrain. Coastdown test was done under neutral and gear engaged condition for comparison and also trial to extract mechanical loss of drivetrain was carried out. Calculated engine torque by conventional and newly suggested method was compared with actually measured torque of a vehicle on a chassis dynamometer during NEDC. Newly suggested method showed slightly higher accuracy of accumulated brake work during NEDC. |
| 원문(PDF) |
다운로드
|
