Spray characteristics of four-hole injectors used for a hydrocarbon lean nitrogen oxide catalyst system in a diesel engine
- Authors
- Oh, Jungmo; Kim, Kibum; Lee, Kihyung
- Issue Date
- Aug-2012
- Publisher
- Mechanical Engineering Publications Ltd.
- Keywords
- Four-hole injector; secondary injection system; Sauter mean diameter; spray characteristics; hydrocarbon lean nitrogen oxide trap
- Citation
- Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, v.226, no.8, pp 1073 - 1087
- Pages
- 15
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
- Volume
- 226
- Number
- 8
- Start Page
- 1073
- End Page
- 1087
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/36318
- DOI
- 10.1177/0954407011435771
- ISSN
- 0954-4070
2041-2991
- Abstract
- Among emission reduction technologies, a hydrocarbon lean nitrogen oxide trap is a cost-effective solution for nitrogen oxide emission control in light-duty vehicles. However, the hydrocarbon lean nitrogen oxide trap leads to high fuel consumption because diesel fuel is normally used as a reducing agent (i.e. a reductant). It is necessary to establish injection conditions corresponding to the maximum nitrogen oxide conversion in the hydrocarbon lean nitrogen oxide trap system. A uniform distribution of the reducing agent is desirable, and the spray characteristics of the reductant, such as atomization and penetration, must be well understood in order to establish a good performance of the hydrocarbon lean nitrogen oxide trap. With this goal in mind, the spray characteristics and behaviour of a port fuel injector with four holes were analysed using visualization and r.m.s. image-processing techniques. The Sauter mean diameter distribution of the injector was measured using a Malvern system. The liquid agents employed in this study were ISO 4113 and n-heptane, which have properties similar to those of diesel and gasoline fuels respectively. These results elucidated the feasibility of a secondary injection system for the hydrocarbon lean nitrogen oxide trap.
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