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Hydrocarbon Species in the Exhaust of Diesel Engines Equipped with Advanced Emissions Control Devices.
| 题名： | Hydrocarbon Species in the Exhaust of Diesel Engines Equipped with Advanced Emissions Control Devices. |
| 作者： | DOMINGO, N.; HUFF, S. P.; KASS, M.; LEWIS, S. A.; SLUDER, C. S.; STOREY, J. M.; THOMAS, J.; WAGNER, R. M.; WEST, B. H. |
| 关键词： | DIESEL ENGINES; EMISSIONS CONTROL; EXHAUST EMISSIONS; HYDROCARBONS; NITROGEN OXIDES |
| 摘要： | The following report will illustrate the variation in hydrocarbon (HC) species that can exist in modern diesel engine exhaust when a variety of NOx emissions control methods are used. Modern diesel engines operate at high efficiency and typically have very low HC concentrations in diesel exhaust. Therefore, because diesel exhaust is fuel lean, some type of HC addition is required to enable the reduction of NOx in a net oxidizing environment. The required increase in HCs, in most cases, means that the low concentrations of HC species that are present in conventional engine operation are overwhelmed by the added HCs. The blend of fuel and the HC introduction strategy are both critical to the composition of the HCs in the exhaust. A set of appendices are included to give as much specific information on individual species as possible. Because many devices will likely use a finishing oxidation catalyst, the work presented here is by no means intended to describe tailpipe emissions, but rather the HC species that must work in concert with the aftertreatment to reduce NOx. |
| 报告类型： | 科技报告 |
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