| 摘要:建立了某型船用柴油机工作过程模型，基于该模型分析了不同配气正时对船用柴油机低温起动性能的影响。分析结果表明:通过调节IVO和EVC时刻，适当减小柴油机气阀重叠期，使高温废气回流，可以有效提高柴油机压缩终点温度，改善低温起动性能；通过调节IVC时刻，增加充气效率，可以优化柴油机低温起动性能。 |
| 关键词: 船用柴油机 低温起动 配气正时 |
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| Cold Startability of Marine Diesel Engine UnderDifferent Valve Timing Conditions |
| Li Xinrui,Ping Tao,Zheng Liang,Wang Xinquan |
| Shanghai Marine Diesel Engine Research Institute, Shanghai 201108 |
| Abstract:The working process simulation model of a marine diesel engine was built up,based on which the marine diesel engine 's cold startability under different valve timing conditions was investigated. The results show that by adjustment of the IVO and EVC timing conditions and appropriate decrease of diesel valve overlap, which could result in back flow of high temperature exhaust gas, the temperature at the end of compression can be effectively enhanced , and low temperature startability be improved.By adjustment of the IVC timing to increase the charging efficiency, better diesel cold startability could be achieved. |
| Key words: marine diesel engine cold starting valve timing |
