Emission Inspection of In-use Vehicle in Bangladesh - CASE

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Figure 15: Frequency Distribution of CO% from 3-Wheeler Auto-rickshaw Figure 16: Cumulative Frequency Distribution of CO% from CNG 3-Wheeler Auto- Rickshaw 4.3.3.1 Idle HC Emissions The idle HC emissions from the CNG auto-rickshaws are presented in Figs.16 and 17. CNG operated three wheelers are expected gave low HC emissions, 56 % falling below 600 PPM and 71% below 1200 PPM (Figure-17). Only about 15% CNG auto rickshaw are above 2000ppm HC. As mentioned before, at present there is no standard for HC for the CNG operated three wheelers. Page | 17
Figure 17: Frequency Distribution of Emission, HC (ppm) from CNG 3-Wheeler Autorickshaw Figure 18: Cumulative Frequency Distribution of HC (ppm) from CNG 3-W Auto-rickshaw 4.3.4 Comparison of Emissions from Different Vehicle Types The average CO and HC emissions from the different category vehicles are presented in Figs. 18 and 19. Among all the Petrol/CNG vehicles, the average percentage of CO and HC of Taxis (all CNG operated) is the lowest and motorcycle (all petrol operated) is the highest (Figure-18 and 19). Page | 18
Page 1 and 2: GOVERNMENT OF THE PEOPLE’S REPUBL
Page 3 and 4: Abbreviations and Acronyms AQ Cell
Page 5 and 6: 1. Introduction Mortality and respi
Page 7 and 8: 2. Composition of Vehicles Populati
Page 9 and 10: 4.0 Results and Emission Data Analy
Page 11 and 12: Figure 3: Frequency Distribution of
Page 13 and 14: Figure 7: Cumulative Distribution o
Page 15 and 16: Figure 10: Cumulative Frequency Dis
Page 17: 4.3.2.3 Idle CO and HC Emissions In
Page 21 and 22: Figure 21: Frequency Distribution o
Page 23 and 24: Fig-25: Comparison of diesel smoke
Page 25 and 26: Government should support explorati
Page 27 and 28: 8. Recommendations Typically, emiss
Page 29 and 30: Khulna Vehicle Type Number of vehic

Emission Inspection of In-use Vehicle in Bangladesh - CASE

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