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公开(公告)号:US07472774B1
公开(公告)日:2009-01-06
申请号:US11341755
申请日:2006-01-27
CPC分类号: F01N1/04 , F01N1/081 , F01N1/083 , F01N2470/02 , F01N2470/10 , F01N2490/08 , F01N2590/00
摘要: An engine muffling system includes a Helmholtz tuning chamber to meet the changing acoustic muffling requirements associated with multiple applications. The engine muffling system in one embodiment includes at least one chamber configured as a plenum device, typically filled with an aggregate material or acoustic absorbing particulate material(s) in order to produce a tortuous path through the at least one chamber.
摘要翻译: 发动机消声系统包括亥姆霍兹调谐室,以满足与多种应用相关的不断变化的声学消声要求。 在一个实施例中,发动机消声系统包括至少一个室,其被配置为通气装置,通常填充有集料材料或吸声颗粒材料,以便产生通过至少一个室的曲折路径。