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Non-methane hydrocarbon characterist...

Tsai, Wai Yan.

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Non-methane hydrocarbon characteristics of motor vehicular emissions in the Pearl River Delta region.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Non-methane hydrocarbon characteristics of motor vehicular emissions in the Pearl River Delta region./
作者:	Tsai, Wai Yan.
面頁冊數:	205 p.
附註:	Adviser: L. Y. Chan.
Contained By:	Dissertation Abstracts International68-09B.
標題:	Atmospheric Sciences. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3282320
ISBN:	9780549247401

Non-methane hydrocarbon characteristics of motor vehicular emissions in the Pearl River Delta region.
Tsai, Wai Yan.

Non-methane hydrocarbon characteristics of motor vehicular emissions in the Pearl River Delta region. - 205 p.

Adviser: L. Y. Chan.

Thesis (Ph.D.)--Hong Kong Polytechnic University (Hong Kong), 2007.

Air pollution problem in Hong Kong and the Pearl River Delta (PRD) region has raised much concern from the public in recent years. The primary aim of this research is to use field measurement data to characterize non-methane hydrocarbons (NMHCs) in emission from motor vehicles. Fuel vapor compositions for several commonly used vehicular fuels in Hong Kong, Macau, Guangzhou and Zhuhai were analyzed in 2003, and they are believed to be the first one reported for the PRD region. These profiles were used to study the impact of evaporative loss of the fuels on air quality.

ISBN: 9780549247401Subjects--Topical Terms:

1019179
Atmospheric Sciences.

Non-methane hydrocarbon characteristics of motor vehicular emissions in the Pearl River Delta region.
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100 1 $a Tsai, Wai Yan. $3 1273527
245 1 0 $a Non-methane hydrocarbon characteristics of motor vehicular emissions in the Pearl River Delta region.
300 $a 205 p.
500 $a Adviser: L. Y. Chan.
500 $a Source: Dissertation Abstracts International, Volume: 68-09, Section: B, page: 6218.
502 $a Thesis (Ph.D.)--Hong Kong Polytechnic University (Hong Kong), 2007.
520 $a Air pollution problem in Hong Kong and the Pearl River Delta (PRD) region has raised much concern from the public in recent years. The primary aim of this research is to use field measurement data to characterize non-methane hydrocarbons (NMHCs) in emission from motor vehicles. Fuel vapor compositions for several commonly used vehicular fuels in Hong Kong, Macau, Guangzhou and Zhuhai were analyzed in 2003, and they are believed to be the first one reported for the PRD region. These profiles were used to study the impact of evaporative loss of the fuels on air quality.
520 $a From the roadside and tunnel samples collected in the four cities mentioned above from 2000 to 2003, results showed that vehicular engine combustion was a main NMHC source, while gasoline evaporative losses also contributed much to the total NMHC emission, besides, LPG leakage was also found to be significant from the tunnel measurement data collected in Hong Kong.
520 $a Characteristics of vehicular engine exhaust emissions were also studied. Measurements of diesel emission showed a large influence on the emission profile due to the change of diesel compositions. The E/E ratios implied that gasoline-powered vehicles in Hong Kong were equipped with well functioning catalysts, while those in Guangzhou and Zhuhai, especially the motorcycles, were found dirtier in NMHC emission. Although the E/E ratios showed that private cars in Hong Kong had high combustion efficiency, the existence of significant amounts of unburned gasoline in their exhaust stream pointed out that they still had low fuel economy. From the results of a simple model, it was found that the evaporative losses of gasoline and LPG contributed much to the total NMHC pollution from vehicle.
520 $a The preliminary results from the dynamometer study conducted in Hong Kong showed large variations of exhaust characteristics for private cars and taxis during different driving speeds. The results can be used as scientific basis for regulatory parties in designing standards and strategies to improve the air quality in this region, and will certainly add substantially to the scientific database for the international community.
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