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| Title: | Soot formation transients in engine emissions |
| Author (s): | Hagen, Donald Edward Whitefield, Philip D. |
| Department/Lab Affiliations: | Chemistry Environmental Research Center Physics |
| Keywords: | Engine emissions Soot formation |
| Issue Date: | 2004 |
| Publisher: | American Physical Society |
| Citation: | Hagen, D.E. and P. Whitefield, “Soot Formation Transients In Engine Emissions”, Bull. Amer. Phys. Soc. 49, 332 (2004). |
| Abstract: | Nanoparticles are emitted from a variety of combustion sources. These particles have been reported to have strong impacts on our environment and human health. There is a growing concern, internationally, on the environmental impact of jet engine exhaust emissions in the atmosphere. Fundamentally, soot emission from combustion sources is dictated by the competing surfaces processes of growth and oxidation. Soot particles formed during fuel combustion and emitted metallic particles constitute the solid (nonvolatile) particle fraction present in exhaust plumes. UMR has developed a mobile facility capable of sampling jet and rocket engine exhaust emissions, including both particulate and gas phase species, and has deployed it in numerous ground test and airborne campaigns. Normally emissions measurements are taken with the engine in a stable operating condition. Here we report on soot (nonvolatile) emissions transients which occur during throttle changes and hence between stable operating conditions. These transients may deviate substantially from the stable condition values in both positive and negative directions. The time scale for decay of the emissions transients is longer than that required for the engine to reach mechanical equilibrium. |
| Type: | Article - Conference proceedings text |
| Copyright Notice: | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. FULL COPYRIGHT INFORMATION: |
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| title | Soot formation transients in engine emissions |
| contributor.author | Hagen, Donald Edward |
| contributor.author | Whitefield, Philip D. |
| contributor.deptlab | Chemistry |
| contributor.deptlab | Environmental Research Center |
| contributor.deptlab | Physics |
| subject | Engine emissions |
| subject | Soot formation |
| date.issued | 2004 |
| publisher | American Physical Society |
| identifier.citation | Hagen, D.E. and P. Whitefield, “Soot Formation Transients In Engine Emissions”, Bull. Amer. Phys. Soc. 49, 332 (2004). |
| description.abstract | Nanoparticles are emitted from a variety of combustion sources. These particles have been reported to have strong impacts on our environment and human health. There is a growing concern, internationally, on the environmental impact of jet engine exhaust emissions in the atmosphere. Fundamentally, soot emission from combustion sources is dictated by the competing surfaces processes of growth and oxidation. Soot particles formed during fuel combustion and emitted metallic particles constitute the solid (nonvolatile) particle fraction present in exhaust plumes. UMR has developed a mobile facility capable of sampling jet and rocket engine exhaust emissions, including both particulate and gas phase species, and has deployed it in numerous ground test and airborne campaigns. Normally emissions measurements are taken with the engine in a stable operating condition. Here we report on soot (nonvolatile) emissions transients which occur during throttle changes and hence between stable operating conditions. These transients may deviate substantially from the stable condition values in both positive and negative directions. The time scale for decay of the emissions transients is longer than that required for the engine to reach mechanical equilibrium. |
| type | Article - Conference proceedings |
| type.DCMIType | text |
| type.status | Final version |
| rights | This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. |
| date.accessioned | 2007-04-11T17:00:48Z |
| date.available | 2007-10-03T14:43:07Z |
| identifier.persist.URI |