小吨位内燃叉车排气系统降噪研究  

Noise Reduction Research of Exhaust System for Small Tonnage Internal Combustion Forklifts

作　　者：相曙锋[1] 李明辉[1] 陈翔宇[1] 沈晓庆[1] 沈苏艺 

机构地区：[1]杭叉集团股份有限公司

出　　处：《工程机械》2016年第8期18-25,7-8,共8页Construction Machinery and Equipment

摘　　要：针对某型号小吨位内燃叉车排气系统噪声问题进行分析研究,通过设计改进排气消声器来达到降噪的目的。在新型排气消声器的设计改进中,运用消声器台架与实车噪声对比测试相结合的方法,研究新型排气消声器的降噪特性,并且通过降低小吨位内燃叉车排气系统的噪声,为整车的降噪研究提供了经验和方法。最终的整车噪声测试数据表明,排气系统的噪声在最大转速工况降低了6dB(A),整车的噪声辐射声压级降低了2dB(A)。Noise level reduction can be attained thru improved designing exhaust silencers and analyzing noise from the exhaust system in a lighter engine type forklift.During design improvement of a new silencer noise level of benched pieces was compared with actual forklifts at the exhaust system,and was tested and combined,I.e.thru noise level reduction in a lighter forklift to find out a way for normal forklifts.Final test results data show that the noise level can be lowered by 6 dB(A) under max RPM for a whole truck,and the sound pressure level in the noise radiation can be lowered by 2dB(A).

关 键 词：内燃叉车 排气系统 LMS Test.Lab 降噪特性 

分 类 号：TH242[机械工程—机械制造及自动化]