发明名称 |
Engine noise control device. |
摘要 |
<p>An engine noise control device comprising an open portion (7) in a vehicle engine compartment (6), and a noise control member (10) attached to said open portion of the engine compartment and having a noise entering surface (11) and a noise ejecting surface (12) while being provided with a plurality of hollow conduit passages (13) extending from the noise entering surface to the noise ejecting surface of the noise control member, the hollow conduit passages having a noise controlling effect, characterized in that the noise control member is divided into two portions (10A, 10B) and a space (21) is formed therebetween whereby sounds controlled by passage through the hollow conduit passages of the noise control member and other sound radiated and/or diffracted from the interior of the engine compartment induce destructive interference. <IMAGE></p> |
申请公布号 |
EP0490885(A2) |
申请公布日期 |
1992.06.17 |
申请号 |
EP19920200687 |
申请日期 |
1984.10.18 |
申请人 |
BRIDGESTONE CORPORATION |
发明人 |
MIZUNO, KEIICHIRO;IIDA, KAZUYOSHI;KONDO, KAZUO |
分类号 |
B60R13/08;B62D25/20;F02B77/13;G10K11/16;G10K11/175 |
主分类号 |
B60R13/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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