进气预混甲醇降低柴油机碳烟与NOx排放的影响参数研究 |
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引用本文: | 姚春德,李云强,王银山,段峰,吉庆. 进气预混甲醇降低柴油机碳烟与NOx排放的影响参数研究[J]. 汽车工程, 2004, 26(6): 635-638,685 |
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作者姓名: | 姚春德 李云强 王银山 段峰 吉庆 |
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作者单位: | 天津大学,内燃机燃烧学国家重点实验室,天津,300072 |
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基金项目: | 教育部骨干教师基金资助 |
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摘 要: | 在485QDI自然吸气直喷式柴油机上研究了不同喷嘴、不同供油定时、不同喷醇的起点对进气预混甲醇发动机的碳烟、NOx排放和经济性的影响。研究结果表明,为了降低碳烟和NOx排放以及提高燃油经济性,与燃用纯柴油的发动机相比,进气预混甲醇发动机的柴油喷射定时可以保持不变或稍小,但燃油喷嘴的孔径应适当减小,预混甲醇的发动机负荷起点应适中。
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关 键 词: | 碳烟 NOx排放 进气 直喷式柴油机 燃油喷嘴 供油 影响参数 发动机负荷 甲醇发动机 燃油经济性 |
Effect of Parameters on Soot and NOx Emissions from Diesel Engine with Pre-mixed Methanol in Intake Manifold |
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Abstract: | The effect of paramete rs,including the number and size o f nozzle orifice,injection timing, starting point of methanol injectio n,on soot and NOx emissions from d iesel engine was investigated by t esting conducted on a naturally as pirated DI diesel engine 485QDI.Th e results showed that for improvin g the soot and NOx emission and fu el economy,the size of orifice sho uld be smaller than those in the e ngine only using diesel fuel,while the injection timing could remain the same with appropriate load whe n the methanol injection started. |
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Keywords: | Diesel engine Soot and N Ox emissions Pre-mixed methanol in intake manifold |
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