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1. 发明专利

JPH0328088A WHEEL HOUSING SHELL WHICH WORKS COOPERATIVELY TOGETHER WITH MUD-GUARD OF AUTOMOBILE 失效
公开(公告)号：JPH0328088A
公开(公告)日：1991-02-06
申请号：JP11886090
申请日：1990-05-10
申请人： H P CHEM PERUTSUERU RES & DEV
发明人： JIYON KESHII
IPC分类号： B60R13/08 , B62D25/18
摘要： PURPOSE: To reduce the noise by covering a wheel housing shell with a porous filter mat on the side facing a wheel, and over the whole surface extending parallel to a mudguard to suck most of water splash. CONSTITUTION: A wheel housing shell 2 is supported in relation to a mudguard at points 3 as indicated by an inner periphery 1 of the mudguard, the wheel housing shell 2 is formed of a corrugated material, and a filter mat 5 facing the wheel is supported at points 13. A cavity functions as a channel 4 to store water from the filter mat 5, water is sucked with the vacuum generated in the channel 4, and carried out onto a road. When the channel 6 is not filled, the channel 6 keeps an inner periphery of the mudguard in a dry condition, and protects it from the corrosion.

2. 发明专利

JPH03156128A NOISE ABSORBING MATERIAL FOR AUTOMOBILE OIL SUMP AND ITS APPLICATION 失效
公开(公告)号：JPH03156128A
公开(公告)日：1991-07-04
申请号：JP19091790
申请日：1990-07-20
申请人： H P CHEM PERUTSUERU RES & DEV
发明人： JIYON KESHII
IPC分类号： F01N1/24 , F01M11/00 , F02B77/13 , F02F7/00 , G10K11/168
摘要： PURPOSE: To effectively save the required cost without disturbing heat radiation via oil sumps by applying covers serving as a sound absorbing material to the outsides of the oil sumps and only to outer areas wherein the maximum amplitude of sound waves exists. CONSTITUTION: A sound absorbing material for sounds radiating from the oil sumps 1, 3 of an automobile and transmitted through air or structures uses a cover consisting of a layer 5 of viscoelastic material and a metallic cover layer 6, and the layer 5 of viscoelastic material is assembled between the oil sumps 1, 3 and the cover layer 6. The covers 5, 6 serving as the sound absorbing material are applied to the outsides of the oil sumps 1, 3 and only to outer areas 2 wherein the maximum amplitude of sound waves exists. This can be detected through the measurement of the sounds using a microphone or modular analysis because the number and dimension of the areas wherein the maximum amplitude of the sound waves exists are small. Thereby the space and amount of material required for attenuating the sounds are reduced and a sufficient space can be left behind for conventional heat radiation via the surfaces of the oil sumps 1, 3.

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