转速拓展下喷油策略对柴油机低负荷预混燃烧的影响
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范超, 鹿盈盈, 刘一泽
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Effect of Injection Strategy on Low Load Premixed Combustion of a Diesel Engine in Engine Speed Extension
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FAN Chao, LU Yingying, LIU Yize
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表4 中转速优化方案
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Tab.4 Optimization schemes of medium speed
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方案 | R/% | φCA/(°) (P2SOI/D2/P1SOI/D1/MSOI/D) | N/[(g·(kW·h)-1] | C/[g·(kW·h)-1] | E/% | 基准工况 | 0 | 0/0/0/0/-15/5.8 | 3.91×10-2 | 2.09×10-3 | 48.08 | 对比工况1 | 50 | 0/0/-30/2.3/-20/2.3 | 3.02×10-2 | 2.21×10-3 | 46.64 | 对比工况2 | 40 | 0/0/-30/1.9/-20/2.7 | 4.09×10-2 | 2.20×10-3 | 41.34 | 优化方案1 | 40 | 0/0/-25/1.9/-15/2.7 | 4.42×10-2 | 8.24×10-4 | 45.58 | 优化方案2 | 40 | 0/0/-20/1.9/-10/2.7 | 2.34×10-2 | 8.69×10-4 | 47.62 | 优化方案3 | 50 | 0/0/-20/2.3/-10/2.3 | 2.04×10-2 | 3.44×10-4 | 47.77 | 优化方案4 | 25+25 | -20/0.6/-12/0.6/-10/2.7 | 1.59×10-2 | 6.18×10-4 | 48.41 |
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