Effects of Diesel Vehicle Characteristics on Soot Emissions-Nantou County

• Main Authors: JERRYWU, 吳春生
• Other Authors: 林啟文
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/09535458625004688152

碩士 === 大葉大學 === 環境工程學系碩士在職專班 === 95 === The purpose of this research was first to investigate the vehicle characteristics for diesel cars in a bedrock dynamometer smoke examination station. Secondly, the effects of engine size and age, odometer reading on mean smoke opacity at no load and full loads (smoke 100%, 60%, and 40%) conditions were examined. Moreover, the vehicle characteristics and smoke check data were examined by Analysis of Variance (ANOVA). The specific objectives were to explore the smoke emissions under various examining stages and determine the relationship between vehicle characteristics and smoke opacity. Results show vehicle age was a significant factor affecting the smoke emissions under no load and full load conditions. It was found the mean smoke opacity increases with an increase in vehicle ages. The mean no-load smoke opacities for roadside inspection diesel vehicles were significant higher those of at dynamometer smoke examination station. Because the fact that smoke emissions from roadside vehicles reflect the real situation, high smoke emissions from roadside vehicles were observed. In contrast, the lower smoke emissions for vehicles examining at dynamometer smoke examination station were attributed to the vehicle sources from either by visual determination or denouncement. Further research will be necessary to determine the difference between smoke exhausts from various sources of diesel vehicles.