文章摘要
沈颖刚,范钱旺,石玲,张韦,陈贵升.不同海拔下涡轮增压柴油机表面辐射噪声试验研究[J].声学技术,2008,(2):235~239
不同海拔下涡轮增压柴油机表面辐射噪声试验研究
Experimental research on surface-radiated noise of turbo-charged diesel engine at different altitudes
投稿时间:2007-04-05  修订日期:2007-07-25
DOI:
中文关键词: 柴油机  振动  辐射噪声  不同海拔
英文关键词: diesel  vibration  radiated noise  different altitude
基金项目:云南省省院省校科技合作计划项目(2006yx21);云南省中青年学术技术带头人后备人才专项基金资助(2007py01-07)
作者单位
沈颖刚 昆明理工大学, 昆明, 650224 
范钱旺 昆明理工大学, 昆明, 650224 
石玲 昆明理工大学, 昆明, 650224 
张韦 昆明理工大学, 昆明, 650224 
陈贵升 昆明理工大学, 昆明, 650224 
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中文摘要:
      采用表面声压级测量法,运用大气压模拟测试系统,以4100QBZL柴油机为研究对象,测试计算涡轮增压柴油机同转速不同海拔下声功率,不同海拔不同转速下的声功率,不同转速下不同喷油提前角的声功率;分析测试结果表明:表面辐射噪声随转速增加而增大;同转速下,增压柴油机整机噪声随海拔增加而增大;以及不同转速下,喷油提前角对柴油机噪声影响规律。
英文摘要:
      By using the measuring method of superficial sound pressure level and the atmospheric press-ure simulation equipment,and taking the 4100QBZL diesel engine as the research object,the sound power levels on the surface of the turbo-charged diesel engine in the cases of the same rotational speed with different altitudes,different altitudes with different rotational speeds and different advance angles of fuel supply with different rotational speeds are tested and calculated.The analysis of test results indicate that,the surface-radiated noise increases with the rotational speed increase;At the same rotational speed,the noise of the turbo-charged diesel engine increases with the altitude increase,and varies with the advance angles of fuel supply.
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