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公开(公告)号：US4612767A
公开(公告)日：1986-09-23
申请号：US707301
申请日：1985-03-01
CPC分类号： F01N13/14 , F01N2260/20
摘要： Heat shield assemblies are normally connected to engines which have exhaust systems in order to reduce the temperature of the outer surface. The skin temperature of the outer surface of the heat shield assembly must be cooled so that persons coming in contact with such a surface is not burned. The subject heat shield assembly includes a heat source, an inner member and an outer member which respectively define first and second cooling flow paths. The first cooling flow path being adapted to convect heat away from the heat source and the inner member as air passes therethrough and the second cooling flow path being adapted to convect heat away from the inner member and the outer member as air passes therethrough. The air passing through the first and second cooling flow paths effectively reduces the temperature of the outer member so that no one would be burned upon contact therewith.
摘要翻译： 热屏蔽组件通常连接到具有排气系统的发动机，以便降低外表面的温度。 必须冷却隔热组件的外表面的皮肤温度，以使与这种表面接触的人员不被燃烧。 本发明的热屏蔽组件包括分别限定第一和第二冷却流路的热源，内部构件和外部构件。 第一冷却流路适于在空气通过时将热量从热源和内部构件对流，并且第二冷却流路适于在空气从其中通过时将内部构件和外部构件对向散热。 通过第一和第二冷却流路的空气有效地降低了外部构件的温度，使得在与其接触时没有人被烧毁。
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公开(公告)号：US4182122A
公开(公告)日：1980-01-08
申请号：US878141
申请日：1978-02-15
CPC分类号： F01N13/102 , F01N13/141
摘要： An exhaust manifold for an internal combustion engine is provided with internal insulation so as to maintain the outside skin temperature preferably below 450.degree. F. The manifold is provided with an exhaust conduit or lining that is comprised of interfitting relatively axially movable sections in contact with the exhaust gases. A low specific gravity or porous sleeve of insulating material is fitted in slightly spaced relationship around the exhaust conduit. The sleeve of insulating material may be wrapped to prevent the metal of the outer cast manifold housing from penetrating the insulation. Each section of the exhaust conduit has a branch for connection to a flanged nipple which is permitted some limited movement relative to the manifold housing when connected to the exhaust ports of the engine.
摘要翻译： 用于内燃机的排气歧管设有内部绝缘体，以保持外部皮肤温度优选低于450°F。歧管设置有排气管道或衬里，该排气管道或内衬包括与相互轴向移动的部分相接触， 废气。 绝缘材料的低比重或多孔套管围绕排气导管以稍微间隔的关系装配。 绝缘材料的套筒可以被包裹以防止外浇铸歧管壳体的金属穿透绝缘体。 排气管道的每个部分具有用于连接到法兰接头的分支，当连接到发动机的排气口时，其允许相对于歧管壳体的一些有限的运动。
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公开(公告)号：US4168610A
公开(公告)日：1979-09-25
申请号：US891260
申请日：1978-03-29
申请人： Karl R. Engquist
发明人： Karl R. Engquist
CPC分类号： F01N13/102 , F01N13/141 , F01N13/1811
摘要： A manifold for internal combustion engines is provided which has a unique insulation system for maintaining a skin temperature of the manifold below 400.degree. F. The manifold includes an exhaust conduit made up of axially spaced and aligned segments with provision for preventing excessive leakage of exhaust gases between the spaced segments. Each segment has an exhaust port extending at an angle thereto. Two or more members of corrugated or crumpled thin foil are concentrically arranged about the ports and about the conduit with air gaps between the conduit and the innermost member, between the port and the innermost member, and between each member. An outer casing is cast about the members and embeds the ends of the members therein. The foil from which the members are made is polished on the surfaces to be highly reflective thereby reducing the transfer of heat through the successive concentric members. A method of manufacturing the improved insulated manifold is provided.
摘要翻译： 提供了一种用于内燃机的歧管，其具有用于将歧管的皮肤温度维持在400°F以下的独特绝缘系统。歧管包括由轴向间隔开和对准的部分组成的排气导管，其用于防止废气的过度泄漏 间隔的段之间。 每个段具有与其成一定角度延伸的排气口。 两个或更多个波纹或皱褶的薄箔构件围绕端口和导管周向布置在导管和最内部构件之间，在端口和最内部构件之间以及每个构件之间具有空气间隙。 外壳围绕构件铸造并将构件的端部嵌入其中。 制造这些构件的箔在表面上被抛光以具有高反射性，从而减少通过连续的同心构件的热传递。 提供一种制造改进的绝缘歧管的方法。
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