Influence of the fuel spray angle and the injection strategy on the emissions reduction characteristics in a diesel engine
- Title
- Influence of the fuel spray angle and the injection strategy on the emissions reduction characteristics in a diesel engine
- Author
- 이창식
- Keywords
- Multiple injections; diesel engine; injection angle; combustion characteristics; emissions characteristics.
- Issue Date
- 2014-12
- Publisher
- SAGE PUBLICATIONS LTD
- Citation
- Proceedings of the Institution of Mechanical Engineers. D, 2014, 229(5), P.563 - 573
- Abstract
- This study describes the effects of the fuel injection angle and the multiple-injection strategies on the combustion, the emissions and the performance characteristics in a common-rail diesel engine. To conduct this investigation, a single-cylinder diesel engine with four valves was used, and various injection strategies with different parameters such as the spray angle, the timing and a single injection or multiple injections were applied. The combustion pressure, the heat release rate and the emissions were measured by a combustion and exhaust emissions analyser system. An injection spray angle of 156° resulted in higher nitrogen oxide emissions than an injection spray angle of 60° did, as the time between the first injection and the second injection increased. Also multiple injections resulted in lower levels of soot and hydrocarbon emissions than a single injection did. A multiple-injection strategy with a dwell time of 20?40° crank angle before top dead centre and the first injection at 60° crank angle before top dead centre or 50° crank angle before top dead centre improved the engine power and lowered the fuel consumption compared with the results for a single injection.
- URI
- http://journals.sagepub.com/doi/10.1177/0954407014547746http://hdl.handle.net/20.500.11754/49468
- ISSN
- 0954-4070
- DOI
- 10.1177/0954407014547746
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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