표제지
목차
Abstract 6
Ⅰ. 서론 7
Ⅱ. 연구내용 및 방법 9
1. 국내·외 규제 동향 9
가. 미국 9
나. 유럽 10
다. 한국 11
2. 시험장치 및 방법 12
가. 배출가스 시험장치 12
나. 시험모드 13
다. 시험차량 15
라. 시험조건 15
Ⅲ. 연구결과 및 고찰 16
1. 차량조건별 질소산화물 배출 특성 16
가. 에어컨 작동에 따른 질소산화물 배출 특성 16
나. 엔진 흡기온도 고온 조건에서의 질소산화물 배출 특성 17
2. 시험모드별 질소산화물 배출 특성 19
가. 규제 모드 19
나. Highway 모드 20
다. US 06 모드 20
라. SC 03 모드 22
마. 시험모드별 NOx 대비 NO₂비율 23
3. 저온조건에서의 질소산화물 배출 특성 24
4. 저온조건에서의 질소산화물 배출계수 비교 26
5. 운행조건에 따른 배출량 비교 27
6. 경유자동차의 질소산화물 저감 방안 32
Ⅳ. 결론 34
참고문헌 36
[Table 1] Korean emission standards for light duty diesel vehicles 11
[Table 2] Specification of various driving cycle 13
[Table 3] Specification of NIER driving cycle 14
[Table 4] Comparison of Emission Factor between current and -7℃ condition 26
[Table 5] Ambient temperature profile on the 0℃ below condition 28
[Table 6] Ambient temperature profile on A/C On condition 28
[Table 7] Transportation flow by time 28
[Table 8] Comparison of NOx emission using current emission factor and cold temperature emission factor 30
[Table 9] Comparison of NOx emission using current emission factor and A/C On emission factor 31
[Fig. 1] Average NOx emission on the PEMS route and during NEDC testing in the laboratory 10
[Fig. 2] Photograph of emission test 12
[Fig. 3] Driving Schedule of various test mode 14
[Fig. 4] NOx emission of diesel vehicles on the A/C On condition 16
[Fig. 5] Comparison of EGR rate according to A/C condition 17
[Fig. 6] NOx emission of diesel vehicles on the high intake air temperature condition 18
[Fig. 7] EGR rate on the high intake air temperature condition 18
[Fig. 8] NOx emission on the regulation test mode 19
[Fig. 9] NOx emission on the Highway test mode 20
[Fig. 10] NOx emission on the US 06 test mode 21
[Fig. 11] EGR rate and real time NOx emission on the US 06 test mode 21
[Fig. 12] NOx emission on the SC 03 test mode 22
[Fig. 13] EGR rate and real time NOx emission on the SC 03 test mode 23
[Fig. 14] NO2/NOx ratio according to test mode 24
[Fig. 15] Comparison of NOx emission between cold and normal ambient temperature 25
[Fig. 16] Comparison of real time NOx emission between cold and normal ambient temperature 25
[Fig. 17] Comparison of Emission Factor between current and -7℃ condition 27
[Fig. 18] Comparison of Emission Factor between current and A/C On condition 27
[Fig. 19] Comparison of NOx emission using current emission factor and cold temperature emission factor 30
[Fig. 20] Comparison of NOx emission using current emission factor and A/C On emission factor 31