Abstract
As we all know that the civilian vehicle growth,Particularly in the fast-growing private cars has brought great convenience to people ' s daily life,but also leads to a serious environmental problems arising from its exhaust and it becomes a hazard now. Scientific analysis discovers that vapour O2,H2,N2,CO2,CO,hydrocarbons,NOx,SO2,Particulate matter etc are all included in the automobile exhaust. Those ingredients harmful to human beings and impacting on the natural growth are called pollutants,such as CO2,CO,hydrocarbons, NOx, SO2, particulate matter. According to statistics,one car exhaust emission in a year is larger 3 times than the weight of its own.
There were some necessary links between Automobile exhaust components and engine failure. Through the exhaust composition and its content tested by vehicle exhaust gas analyzer, and make the standard value for comparison, so as to analyze and infer the vehicle performance is good or bad, determine the location of engine failure, further troubleshooting to restore their good performance, increase vehicle power, economy and reduce emissions. Through the real vehicle (Santana 2000GSI) failure to do simulation experiments can verify the theory, in order to make better use of exhaust gas analysis to diagnose faults.
Keywords: Automotive Exhaust;Emission Detection;Burning Situation Analysis;Fault Diagnosis .
目錄
摘 要 I
Abstract II
目錄 III
第一章 緒論 1
1.1 概述 1
1.2 背景與意義 1
1.3 國內外汽車尾氣排放檢測系統的發展現狀 2
1.3.1 國外汽車尾氣排放檢測系統的發展現狀 2
1.3.2 國內汽車尾氣排放檢測系統的發展現狀 3
1.4 本課題的主要任務 5
1.5 本章小結 5
第二章 汽車發動機尾氣生成機理和影響因素分析 6
2.1 一氧化碳 6
2.1.1 一氧化碳的生成機理 6
2.1.2 影響一氧化碳生成的因素 7
2.2 碳氫化合物 9
2.2.1 碳氫化合物的生成機理 9
2.2.2 影響碳氫化合物生成的因素 12
2.3 氮氧化物 13
2.3.1 氮氧化物的生成機理 13
2.3.2 影響氮氧化物生成的因素 16
2.4 本章小結 17
第三章 發動機尾氣排放分析 18
3.1 空燃比對尾氣的影響 18
3.2 尾氣成份與點火時間的關系規律 21
3.3 發動機負荷對尾氣影響 22
3.4 發動機轉速對尾氣影響 25
3.5 發動機溫度對尾氣影響 27
3.6 發動機尾氣異常原因分析 27
3.7 本章小結 28
第四章 汽車尾氣排放實驗 29
4.1 汽車尾氣分析儀簡介 29
4.2 NHA 501尾氣分析儀使用說明 29
4.2 NHA 501尾氣分析儀使用說明 30
4.3 實驗 30
4.4 本章小結 32
第五章 實例分析 35
5.1 實例1 35
5.2 實例2 36
5.3 實例3 36
5.4 本章小結 37
第六章 結論 38
參考文獻 39
致 謝 40