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| Content Provider | The American Society of Mechanical Engineers (ASME) Digital Collection |
|---|---|
| Author | Lai, F. C. |
| Copyright Year | 2011 |
| Abstract | Diesel particulate filters (DPFs) are now considered a necessary and indispensable after-treatment system for reducing diesel soot to meet the future stringent regulations of diesel emissions. The present work is aimed at developing strategies for effective tube design to minimize the temperature drop (ΔT) between turbocharger outlet and diesel particulate inlet so as to improve the performance of DPF. Previous studies have shown that increasing heat retention in the operation of DPF improves fuel consumption by 5–7%. They have also shown that fuel economy can be improved by approximately 1% for every 4°C temperature reduction in downpipe. Exhaust tubes with diameter of 8.89 and 12.7 cm (3.5 and 5 in., respectively) with 2, 3, and 4 bends are examined in this study for their effects in the overall pressure drop. In addition, two types of insulations, thermolastic wrap and metal encapsulated with thermal conductivities of 0.133 and 0.024 W/m2·K respectively, are considered for their contribution to the overall temperature drop. It is expected that the results obtained will help in designing an optimal exhaust tube for a diesel after-treatment system. |
| Starting Page | 913 |
| Ending Page | 922 |
| Page Count | 10 |
| File Format | |
| ISBN | 9780791854907 |
| DOI | 10.1115/IMECE2011-62385 |
| Volume Number | Volume 4: Energy Systems Analysis, Thermodynamics and Sustainability; Combustion Science and Engineering; Nanoengineering for Energy, Parts A and B |
| Conference Proceedings | ASME 2011 International Mechanical Engineering Congress and Exposition |
| Language | English |
| Publisher Date | 2011-11-11 |
| Publisher Place | Denver, Colorado, USA |
| Access Restriction | Subscribed |
| Subject Keyword | Regulations Temperature Metals Soot Fuel consumption Exhaust systems Emissions Design Filters Heat Fuel efficiency Pressure drop Particulate matter Diesel Turbochargers Corporate average fuel economy |
| Content Type | Text |
| Resource Type | Article |
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