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公开(公告)号：US6116202A
公开(公告)日：2000-09-12
申请号：US291717
申请日：1999-04-14
CPC分类号： F02F3/00 , C04B35/83 , F02F7/0085 , F05C2201/021 , F05C2201/0433 , F05C2201/0448 , F05C2203/0808 , F05C2203/0882 , F05C2251/042 , F05C2253/16
摘要： An improved structure for carbon--carbon composite piston architectures is disclosed. The improvement consists of replacing the knitted fiber, three-dimensional piston preform architecture described in U.S. Pat. No. 4,909,133 (Taylor et al.) with a two-dimensional lay-up or molding of carbon fiber fabric or tape. Initially, the carbon fabric or tape layers are prepregged with carbonaceous organic resins and/or pitches and are laid up or molded about a mandrel, to form a carbon-fiber reinforced organic-matrix composite part shaped like a "U" channel, a "T"-bar, or a combination of the two. The molded carbon-fiber reinforced organic-matrix composite part is then pyrolized in an inert atmosphere, to convert the organic matrix materials to carbon. At this point, cylindrical piston blanks are cored from the "U"-channel, "T"-bar, or combination part. These blanks are then densified by reimpregnation with resins or pitches which are subsequently carbonized. Densification is also accomplished by direct infiltration with carbon by vapor deposition processes. Once the desired density has been achieved, the piston billets are machined to final piston dimensions; coated with oxidation sealants; and/or coated with a catalyst. When compared to conventional steel or aluminum alloy pistons, the use of carbon--carbon composite pistons reduces the overall weight of the engine; allows for operation at higher temperatures without a loss of strength; allows for quieter operation; reduces the heat loss; and reduces the level of hydrocarbon emissions.
摘要翻译： 公开了一种用于碳 - 碳复合活塞结构的改进结构。 该改进包括更换美国专利中描述的针织纤维，三维活塞预制件结构。 No.4,909,133（Taylor等人），其具有碳纤维织物或胶带的二维叠层或成型。 最初，碳布或胶带层用碳质有机树脂和/或沥青预先预浸，并围绕心轴进行铺设或模塑，以形成形状如“U”通道的碳纤维增强的有机 - 基体复合材料部分，“ T“-bar或两者的组合。 然后将模制的碳纤维增强有机基复合材料部分在惰性气氛中进行热解，将有机基质材料转化为碳。 此时，圆柱形活塞坯料从“U”形通道，“T”型杆或组合部分是核心的。 然后通过用随后碳化的树脂或沥青再次浸渍来使这些坯料致密化。 致密化还可以通过气相沉积工艺直接渗透碳来实现。 一旦达到所需的密度，就将活塞坯料加工成最终的活塞尺寸; 涂有氧化密封剂; 和/或涂覆有催化剂。 与传统的钢或铝合金活塞相比，碳 - 碳复合活塞的使用降低了发动机的总体重量。 允许在较高温度下操作而不失去强度; 允许更安静的操作; 减少热损失; 并降低碳氢化合物排放的水平。
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2.发明授权
公开(公告)号：US5810556A
公开(公告)日：1998-09-22
申请号：US811378
申请日：1997-03-04
CPC分类号： F01D25/24 , F01D9/026 , F02F7/0085 , F05D2300/224 , F05D2300/603
摘要： An improved, lightweight, turbine housing unit for an intermittent combustion reciprocating internal combustion engine turbocharger is prepared from a lay-up or molding of carbon-carbon composite materials in a single-piece or two-piece process. When compared to conventional steel or cast iron, the use of carbon-carbon composite materials in a turbine housing unit reduces the overall weight of the engine and reduces the heat energy loss used in the turbocharging process. This reduction in heat energy loss and weight reduction provides for more efficient engine operation.
摘要翻译： 用于间歇式往复式内燃机涡轮增压器的改进的，轻质的涡轮机壳体单元是以单件式或两件式方法从碳 - 碳复合材料的叠层或成型制备的。 与传统的钢铁或铸铁相比，在涡轮机壳体单元中使用碳 - 碳复合材料减少了发动机的总体重量并降低了涡轮增压过程中使用的热能损失。 热能损失和重量减轻的这种减少提供了更有效的发动机运转。
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3.发明授权
公开(公告)号：US5934648A
公开(公告)日：1999-08-10
申请号：US828818
申请日：1997-03-12
摘要： A carbon fiber reinforced carbon composite valve for internal combustion engines and the like formed of continuous carbon fibers throughout the valve's stem and head is disclosed. The valve includes braided carbon fiber material over axially aligned unidirectional carbon fibers forming a valve stem; the braided and unidirectional carbon fibers being broomed out at one end of the valve stem forming the shape of the valve head; the valve-shaped structure being densified and rigidized with a matrix of carbon containing discontinuous carbon fibers; and the finished valve being treated to resist oxidation. Also disclosed is a carbon matrix plug containing continuous and discontinuous carbon fibers and forming a net-shape valve head acting as a mandrel over which the unidirectional and braided carbon fibers are formed according to textile processes. Also disclosed are various preform valves and processes for making finished and preform carbon fiber reinforced carbon composite valves.
摘要翻译： 公开了一种用于内燃机等的碳纤维增强碳复合阀，其由连续的碳纤维形成在整个阀的阀杆和头部中。 阀门包括形成阀杆的轴向对齐单向碳纤维上的编织碳纤维材料; 编织和单向碳纤维在阀杆的一端被扫出，形成阀头的形状; 阀状结构用含有不连续碳纤维的碳基体致密化和刚性化; 并且完成的阀被处理以抵抗氧化。 还公开了一种含有连续和不连续的碳纤维的碳基质塞，并且形成了用作心轴的网状阀头，根据纺织工艺在其上形成单向和编织的碳纤维。 还公开了用于制造成品和预成型碳纤维增强碳复合阀的各种预成型阀和方法。
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公开(公告)号：US5792402A
公开(公告)日：1998-08-11
申请号：US815543
申请日：1997-03-12
摘要： A method for forming a carbon composite valve for internal combustion engines. The process includes the steps of braiding carbon fiber into a rope thereby forming a cylindrically shaped valve stem portion and continuing to braid said fiber while introducing into the braiding carbon fiber rope a carbon matrix plug having an outer surface in a net shape of a valve head thereby forming a valve head portion, said carbon matrix plug acting as a mandrel over which said carbon fiber rope is braided, said carbon fiber rope and carbon matrix plug forming a valve head portion suitable for mating with a valve seat; cutting said braided carbon valve stem portion at one end to form a valve tip and cutting said braided carbon fiber after said valve head portion to form a valve face and thus provide a composite valve preform; and densifying said preform by embedding the braided carbon in a matrix of carbon to convert said valve stem portion to a valve stem and said valve head portion to a valve head thereby providing said composite valve.
摘要翻译： 一种用于形成用于内燃机的碳复合阀的方法。 该方法包括以下步骤：将碳纤维编织到绳索中，从而形成圆柱形阀杆部分，并且继续编织所述纤维，同时向编织碳纤维绳索中引入具有阀头的净形状的外表面的碳基质栓塞 从而形成阀头部分，所述碳基质栓塞用作芯棒，所述碳纤维绳绳编织在所述心轴上，所述碳纤维绳索和碳基质栓塞形成适于与阀座配合的阀头部分; 在一端切割所述编织碳阀杆部分以形成阀尖并在所述阀头部分之后切割所述编织碳纤维以形成阀面，从而提供复合阀预制件; 并且通过将编织碳嵌入碳基体中来致密化所述预制件，以将所述阀杆部分转换成阀杆，并将所述阀头部分转换成阀头，由此提供所述复合阀。
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5.发明授权
公开(公告)号：US6098579A
公开(公告)日：2000-08-08
申请号：US321021
申请日：1999-05-27
摘要： Carbon fiber reinforced carbon composite rotary, sleeve, and disc valves for internal combustion engines and the like are disclosed. The valves are formed from knitted or braided or warp-locked carbon fiber shapes. Also disclosed are valves fabricated from woven carbon fibers and from molded carbon matrix material. The valves of the present invention with their very low coefficient of thermal expansion and excellent thermal and self-lubrication properties, do not present the sealing and lubrication problems that have prevented rotary, sleeve, and disc valves from operating efficiently and reliably in the past. Also disclosed are a sealing tang to further improve sealing capabilities and anti-oxidation treatments.
摘要翻译： 公开了用于内燃机等的碳纤维增强碳复合材料旋转，套筒和盘阀。 阀由针织或编织或经锁定的碳纤维形状形成。 还公开了由编织碳纤维和模制碳基质材料制成的阀。 本发明的阀具有非常低的热膨胀系数和优异的热自润滑性能，不存在阻止旋转，套筒和盘式阀在过去有效和可靠地运转的密封和润滑问题。 还公开了进一步提高密封性能和抗氧化处理的密封柄。
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6.发明授权
公开(公告)号：US5908016A
公开(公告)日：1999-06-01
申请号：US812826
申请日：1997-03-06
摘要： Carbon fiber reinforced carbon composite rotary, sleeve, and disc valves for internal combustion engines and the like are disclosed. The valves are formed from knitted or braided or warp-locked carbon fiber shapes. Also disclosed are valves fabricated from woven carbon fibers and from molded carbon matrix material. The valves of the present invention with their very low coefficient of thermal expansion and excellent thermal and self-lubrication properties, do not present the sealing and lubrication problems that have prevented rotary, sleeve, and disc valves from operating efficiently and reliably in the past. Also disclosed are a sealing tang to further improve sealing capabilities and anti-oxidation treatments.
摘要翻译： 公开了用于内燃机等的碳纤维增强碳复合材料旋转，套筒和盘阀。 阀由针织或编织或经锁定的碳纤维形状形成。 还公开了由编织碳纤维和模制的碳基质材料制成的阀。 本发明的阀具有非常低的热膨胀系数和优异的热自润滑性能，不存在阻止旋转，套筒和盘式阀在过去有效和可靠地运转的密封和润滑问题。 还公开了进一步提高密封性能和抗氧化处理的密封柄。
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公开(公告)号：US6148785A
公开(公告)日：2000-11-21
申请号：US480421
申请日：2000-01-11
CPC分类号： F02F1/004 , F02F3/00 , F05C2201/021 , F05C2201/0448 , F05C2203/0808 , F05C2251/042
摘要： An improved reciprocating internal combustion engine has a plurality of engine pistons, which are fabricated from carbon--carbon composite materials, in operative association with an engine cylinder block, or an engine cylinder tube, or an engine cylinder jug, all of which are also fabricated from carbon--carbon composite materials.
摘要翻译： 改进的往复式内燃机具有多个由碳 - 碳复合材料制成的发动机活塞，其与发动机气缸体或发动机气缸管或发动机气缸罐可操作地相关联，所有这些也被制造 来自碳 - 碳复合材料。
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公开(公告)号：US6044819A
公开(公告)日：2000-04-04
申请号：US808290
申请日：1997-02-28
CPC分类号： F02F1/004 , F02F3/00 , F05C2201/021 , F05C2201/0448 , F05C2251/042
摘要： An improved reciprocating internal combustion engine has a plurality of engine pistons, which are fabricated from carbon-carbon composite materials, in operative association with an engine cylinder block, or an engine cylinder tube, or an engine cylinder jug, all of which are also fabricated from carbon-carbon composite materials.
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公开(公告)号：US5948330A
公开(公告)日：1999-09-07
申请号：US816403
申请日：1997-03-05
CPC分类号： C04B35/83 , F02F7/0085 , F05C2201/021 , F05C2201/0433 , F05C2201/0448 , F05C2203/0882 , F05C2251/042 , F05C2253/16
摘要： A three-dimensional piston molding is fabricated from a mixture of chopped, carbon tow filaments of variable length, which are prepregged with carbonaceous organic resins and/or pitches and molded by conventional molding processes into a near net shape, to form a carbon-fiber reinforced organic-matrix composite part. Continuous reinforcement in the form of carbon-carbon composite tapes or pieces of fabric can be also laid in the mold before or during the charging of the mold with the chopped-fiber mixture, to enhance the strength in the crown and wrist-pin areas. The molded chopped-fiber reinforced organic-matrix composite parts are then pyrolized in an inert atmosphere, to convert the organic matrix materials to carbon. These pyrolized parts are then densified by reimpregnation with resins or pitches, which are subsequently carbonized. Densification is also accomplished by direct infiltration with carbon by vapor deposition processes. Once the desired density has been achieved, the piston molds are machined to final piston dimensions, and piston ring grooves are added. To prevent oxidation and/or to seal the piston surface or near surface, the chopped-fiber piston is coated with ceramic and/or metallic sealants; and/or coated with a catalyst.
摘要翻译： 三维活塞成型由具有可变长度的切碎的碳纤维丝束的混合物制成，预先预浸有碳质有机树脂和/或沥青，并通过常规模塑工艺模制成近净形状以形成碳纤维 增强有机基复合材料。 在碳纤维复合带或织物片的形式下的连续增强也可以在用短切纤维混合物对模具充电之前或期间放置在模具中，以增强表冠和腕带区域的强度。 然后将模制的短切纤维增强有机基质复合材料在惰性气氛中进行热解，将有机基质材料转化为碳。 然后通过用随后碳化的树脂或沥青再浸渍使这些热解部分致密化。 致密化还可以通过气相沉积工艺直接渗透碳来实现。 一旦实现了所需的密度，就将活塞模具加工成最终的活塞尺寸，并添加活塞环槽。 为了防止氧化和/或密封活塞表面或近表面，短切纤维活塞涂覆有陶瓷和/或金属密封剂; 和/或涂覆有催化剂。
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10.发明授权
公开(公告)号：US5927070A
公开(公告)日：1999-07-27
申请号：US816404
申请日：1997-03-05
CPC分类号： F01N13/16 , F01N13/10 , F01N13/14 , F01N2240/20 , F01N2260/06 , F01N3/30
摘要： An improved exhaust system for an internal combustion gasoline-and/or diesel-fueled engine includes an engine exhaust manifold which has been fabricated from carbon-carbon composite materials in operative association with an exhaust pipe ducting which has been fabricated from carbon-carbon composite materials. When compared to conventional steel, cast iron, or ceramic-lined iron parts, the use of carbon-carbon composite exhaust-gas manifolds and exhaust pipe ducting reduces the overall weight of the engine, which allows for improved acceleration and fuel efficiency; permits operation at higher temperatures without a loss of strength; reduces the "through-the wall" heat loss, which increases engine cycle and turbocharger efficiency and ensures faster "light-off" of catalytic converters; and, with an optional thermal reactor, reduces emission of major pollutants, i.e. hydrocarbons and carbon monoxide.
摘要翻译： 用于内燃汽油和/或柴油燃料发动机的改进的排气系统包括由碳 - 碳复合材料制成的发动机排气歧管，其与由碳 - 碳复合材料制成的排气管道可操作地连接 。 与传统的钢铁，铸铁或陶瓷衬里的铁件相比，采用碳 - 碳复合排气歧管和排气管道减少了发动机的总体重量，从而提高了加速和燃油效率。 允许在较高温度下操作，而不会丧失强度; 减少“通过墙壁”的热损失，从而提高发动机循环和涡轮增压器的效率，并确保催化转化器更快的“关闭” 并且使用可选的热反应器减少主要污染物（即碳氢化合物和一氧化碳）的排放。
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