会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 8. 发明授权
    • Carbon-carbon piston architectures
    • 碳碳活塞结构
    • US6116202A
    • 2000-09-12
    • US291717
    • 1999-04-14
    • H. Kevin RiversPhilip O. RansoneG. Burton NorthamFrancis A. Schwind
    • H. Kevin RiversPhilip O. RansoneG. Burton NorthamFrancis A. Schwind
    • C04B35/83F02F3/00F02F7/00F02F75/06
    • F02F3/00C04B35/83F02F7/0085F05C2201/021F05C2201/0433F05C2201/0448F05C2203/0808F05C2203/0882F05C2251/042F05C2253/16
    • 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.
    • 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。