| 4缸柴油机怠速噪声及声品质优化研究 |
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| 引用本文： | 胡国强,陈晓东,孙柏林,罗浩锋,卫海桥,刘岳文,张祚. 4缸柴油机怠速噪声及声品质优化研究[J]. 内燃机工程, 2009, 30(4) |
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| 作者姓名： | 胡国强 陈晓东 孙柏林 罗浩锋 卫海桥 刘岳文 张祚 |
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| 作者单位： | 1. 广西玉柴机器股份有限公司,技术中心,玉林,537005
2. 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： | 天津市自然科学基金项目，天津市科技支撑计划重点项目 |
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| 摘 要： | 针对高压共轨4缸柴油机进行了怠速噪声测试、噪声源识别、降噪以及声品质优化研究工作.通过改变转速、预喷油量、预喷间隔角、轨压和主喷正时,研究了这些参数对怠速噪声的影响,并确定最佳值.通过燃烧噪声分析和噪声源识别,采取怠速噪声降噪措施.对怠速噪声优化前后的结果进行声品质比较,采取的电控标定优化和屏蔽措施能有效改善怠速声品质.研究结果表明:该4缸柴油机经过电控优化标定后的主要怠速噪声源为机械噪声,通过对齿轮室罩盖、气缸盖罩盖等薄壁件采取屏蔽措施,能有效降低怠速噪声,改善声品质.
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| 关 键 词： | 内燃机 柴油机 怠速噪声 降噪 声品质 |
Study and Optimization on Idle Noise and Sound Quality of Four Cylinder Diesel Engine |
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| HU Guo-qiang,CHEN Xiao-dong,SUN Bo-lin,LUO Hao-feng,WEI Hai-qiao,LIU Yue-wen,ZHANG Zuo. Study and Optimization on Idle Noise and Sound Quality of Four Cylinder Diesel Engine[J]. Chinese Internal Combustion Engine Engineering, 2009, 30(4) |
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| Authors: | HU Guo-qiang CHEN Xiao-dong SUN Bo-lin LUO Hao-feng WEI Hai-qiao LIU Yue-wen ZHANG Zuo |
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| Affiliation: | 1.Technical Center;Guangxi Yuchai Machinery Co.;Ltd.;Yulin 537005;China;2.State Key Laboratory of Engines;Tianjin University;Tianjin 300072;China |
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| Abstract: | The idle noise testing,noise source identification,reducing noise and sound quality optimization were performed on a four cylinder diesel engine.The influences of engine speed,pilot injection quantity,pilot injection duration angle,common rail pressure and main injection timing on idle noise were investigated and the optimal values of these parameters were confirmed.The method for reducing the idle noise was proposed by combustion analysis and noise source identification.The idle sound quality was improved ... |
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| Keywords: | IC engine diesel engine idle noise reducing noise sound quality |
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