표제지
Abstract
요약
목차
약어정리 12
기호설명 12
제1장 서론 13
1.1. 매연의 발생 및 구성 15
1.2. 매연채취부 구성 17
1.3. 매연포집기의 구성 및 원리 19
1.3. 채취부의 손실 및 풍량제어 23
제2장 시험 26
2.1. 시험개요 26
2.2. 장비 구성 27
2.3. 시험방법 및 절차 30
2.4. 시험결과 36
2.4.1. 매연프로브 삽입깊이와 매연측정농도와의 관계 36
2.4.2. 매연포집기 흡입유량과 매연농도와의 관계 37
2.4.3. 매연포집기 노즐을 후방에 설치할 경우 39
2.4.4. 손상된 프로브를 사용한 경우 매연배출 패턴 41
제3장 고찰 44
3.1. 검사모드별 엔진회전수 및 배출유량 분석 44
3.2. 측정값 변화의 원인분석 47
제4장 결론 50
참고문헌 51
부록 52
[Table 1.1] Vehicle emission inspection system transition 13
[Table 1.2] Parts and applications of soot trap 20
[Table 1.3] Physical characteristics of ceramic material 20
[Table 1.4] Inflow loss coefficient of branch pipe 24
[Table 1.5] Pressure loss factor of circular elbow 24
[Table 2.1] Equipment and facility standards of general inspection 26
[Table 2.2] Specification of chassis dynamometer 28
[Table 2.3] Specification of opacimeter 28
[Table 2.4] Specification of soot trap 29
[Table 2.5] Specification of test vehicle 29
[Table 2.6] Specification of flow meter 30
[Table 2.7] Types of diesel vehicle exhaust gas inspection 31
[Table 2.8] Probe insertion depth & Opacity 36
[Table 2.9] Soot trap flow rate & Exhaust opacity 38
[Table 2.10] Probe insertion depth & Opacity(nozzle backward installation) 40
[Table 3.1] Engine rpm and discharge flow rate by inspection mode 44
[Table 3.2] Density and volume ratio of air by temperature 46
[Table 3.3] Engine displacement of medium-sized & compact vehicle 46
[Table 3.4] Engine displacement of heavy duty vehicle 47
[Fig. 1.1] Components of particulate matter 16
[Fig. 1.2] Constituent ratio of particulate matter 16
[Fig. 1.3] Apparatus of soot probe 17
[Fig. 1.4] Soot trap nozzle 17
[Fig. 1.5] Soot trap installation 18
[Fig. 1.6] Apparatus of exhaust pipe 18
[Fig. 1.7] Apparatus of soot trap 19
[Fig. 1.8] PM collection process and enlarged picture of porous wall 22
[Fig. 1.9] Enlarged picture of porous barrier 22
[Fig. 1.10] The pattern of compressed air passing through the filter wall 23
[Fig. 1.11] Flow control characteristic curve 25
[Fig. 2.1] The configuration of the test equipment 27
[Fig. 2.2] Flow meter 30
[Fig. 2.3] Loaded test mode 31
[Fig. 2.4] Unloaded test mode 32
[Fig. 2.5] Scene of loaded test 33
[Fig. 2.6] Changes in soot probe insertion depth 34
[Fig. 2.7] Division pipe and flow measurement 34
[Fig. 2.8] Scaling on the soot probe 35
[Fig. 2.9] Probe insertion depth VS opacity 37
[Fig. 2.10] Soot trap flow rate VS Exhaust opacity 39
[Fig. 2.11] In cast of Installation PM extractor nozzle backward 39
[Fig. 2.12] Probe insertion depth VS Exhaust opacity 40
[Fig. 2.13] PM extractor probe tip 41
[Fig. 2.14] In case of damaged probe tip(Snap acceleration) 41
[Fig. 2.15] In Case of normal probe tip(Snap acceleration) 42
[Fig. 2.16] In Case of damaged probe tip(LugDown) 42
[Fig. 2.17] In Case of normal probe tip(LugDown) 43
[Fig. 2.18] Inappropriate probe insertion 43
[Fig. 3.1] Rpm distribution of unloaded snap acceleration mode 44
[Fig. 3.2] Rpm distribution of LugDown mode 45
[Fig. 3.3] Schematic diagram of the opacimeter 47
[Fig. 3.4] Schematic diagram of PM extractor 48
(수식 1.1) (제목없음) 15
(수식 1.2) (제목없음) 23
(수식 2.1) (제목없음)(내용없음) 11