| 英文摘要 |
The density of vehicles in Taiwan is very high. Of all vehicles, diesel vehicles, due to their lower fuel cost, dynamic property of high horsepower output, and longer driving mileage than general vehicles, are all mainly for business use, and the number of diesel vehicles increase year by year. Not only the black smoke emitted by these vehicles makes the general public have bad impression on them, the main ingredients in diesel, including non-methane-hydrocarbons (NMHC), carbon monoxide (CO), nitrogen oxides (NOx) and particulate matter (PM), are also the main sources of air pollution in urban areas.
In order to effectively decrease the pollution produced from vehicles, Environmental Protection Bureau of Kaohsiung City Government especially adopt strict control strategies towards the diesel vehicles in use. Concrete practices include strengthening of roadside visual watch of highly polluting vehicles and increase of frequency for roadside interception of vehicles for testing. The major implementation objectives and major working items done by the company according to the project are as follows:
In a statistics made as of end December 2011, there were 4,842 vehicle-times tested by dynamometer, and 111 vehicle-times were found being failed in the test, with restriction rate of diesel vehicles reaching 100%. In the aspect of oil products, since the current laws stipulated that as from July 1, 2011, the standard sulfur content in diesel product should be reduced from 50ppm to 10ppm. Therefore, as collected from the oil products of vehicles intercepted at roadside and the oil product of gas station for testing, sulfur content was tremendously reduced. Besides, two illegal oil shops were found in Yanchao and Linyuan. And there were 1,461 cases reported of illegal by citizens, having increased by 5 times when compared with 304 cases in 2010. The distribution rate of rewards to the offence reporters was 100%. As to the aspect of emission reduction, emission of PM10 was reduced by around 882 metric tons, and emission of NOx was reduced by around 8,479 metric tons. The emission reduction of PM10 and NOx was increased a lot when compared with the past data. It is expected that the air quality of Kaohsiung City would be gradually improved.
This year, collaboration was made with Environmental Protection Bureau to actively promote “maintenance-inspection in one” policy, and complete evaluation of five maintenance companies. Cheng Ching Lake also officially sent out a letter of application on Dec. 21, 2011 for implementation of regional purification and control. Kaohsiung City even has a practice different from other counties and cities that roadside interception of vehicles for dynamometer testing is implemented, intending to achieve the most authentic testing data of diesel vehicles.
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