표제지
목차
Abstract 6
I. 서론 7
1. 연구배경 및 필요성 7
2. 연구 목표 13
II. 연구내용 및 방법 14
1. 자동차의 유종별 배출가스저감장치 14
2. 경유차 SCR 장치의 작동 및 요소수 분사 제어특성 17
3. SCR 장치의 작동 성능 평가 방법 19
III. 연구결과 및 고찰 21
1. SCR 적용 경유차의 실제 도로 주행 NOx 배출특성 21
2. SCR 적용 경유차의 요소수 분사 제어전략 분석 23
3. SCR 장치의 작동 특성에 따른 NOx 배출량 영향 평가 25
IV. 결론 33
참고문헌 35
〈Table 1〉 List of diesel vehicles disclosed to have defeat device by MoE. 10
〈Table 2〉 Main requirements in routes of on-road emission testing 12
〈Table 3〉 Main specifications of test vehicles 20
〈Table 4〉 Relevant parameters for controlling urea injection 25
〈Table 5〉 Average on-road NOx emissions and urea injection control for test vehicles 32
〈Figure 1〉 Schematic diagram of enhanced PM and NOx standards and emission... 7
〈Figure 2〉 Vehicle speed profiles as time in NEDC and WLTC for laboratory... 8
〈Figure 3〉 On-road NOx emissions of light-duty diesel vehicles in Korea... 9
〈Figure 4〉 EGR functioning and NOx emission in Jeep Renegade determined to... 11
〈Figure 5〉 Schematic diagrams of three-way catalytic converters for gasoline... 16
〈Figure 6〉 Schematic diagrams of emission reduction technologies for diesel... 16
〈Figure 7〉 Characteristics of SCR catalyst depending on temperature 17
〈Figure 8〉 Modified on-road test for evaluating SCR control 20
〈Figure 9〉 Average on-road NOx as emission regulations for diesel vehicles with SCR 21
〈Figure 10〉 On-road NOx emission rates (g/h) in engine driving points for diesel... 22
〈Figure 11〉 Controlling urea injection for vehicle A (Euro 6b) in modified laboratory... 26
〈Figure 12〉 Controlling urea injection and NOx emissions for vehicle A (Euro 6b) as... 27
〈Figure 13〉 Controlling urea injection and NOx emissions for vehicle C (Euro 6d-TBMP)... 28
〈Figure 14〉 Controlling urea injection and NOx emissions for vehicle B (Euro 6b) in... 30
〈Figure 15〉 Controlling urea injection and NOx emissions for vehicle C (Euro 6d-TEMP)... 31