| Summary: | 碩士 === 國立虎尾科技大學 === 機械與機電工程研究所 === 100 === This thesis analyzes the noise filter on the improvement of black smoke emissions from diesel engines.The experiment is based on three different high utilization rate of depot, different performance, different models for different uses heavy-duty diesel vehicles, as measured, respectively, to load three different sizes, different manufacturers, different functions, combined with traditional muffler,The study tail pipe treatment systems filter the smoke, noise, purifying effect.
Study approach is the vehicle that will carry three filter Before loading and after loading, the real driving on the road for some miles and after a period of tracking, recording, sampling, measurement of the usage of the car, After the study, analysis showed that fine particulate pollutants decreased, Concentration to reduce the rate of about 76.6-89.7%; carbon monoxide (CO) and hydrocarbons (HC) into carbon dioxide (CO2) and water, carbon monoxide conversion rate of about 50-90% and hydrocarbon conversion efficiency of about 50-70% between the results; reduced by about 38.6-50.2% of the emission factors of polycyclic aromatic hydrocarbons (PAHs) to reduce the value of the high ring number polycyclic aromatic hydrocarbons (PAHs)value,concentration, a clear downward trend, Especially in the running for some distance,Due to carrier absorption of the exhaust high temperature,Produce the resurgence of regeneration phenomenon better, experimental results show that the tail pipe handling system is to reduce pollution sources.
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