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    • 1. 发明授权
    • Fiber reinforced ceramic matrix composite internal combustion engine intake/exhaust valves
    • 纤维增强陶瓷基体复合内燃机进气/排气阀
    • US06363902B1
    • 2002-04-02
    • US09676244
    • 2000-09-29
    • Thomas Edward StrasserSteven Donald Atmur
    • Thomas Edward StrasserSteven Donald Atmur
    • F02N300
    • F01L3/02
    • A fracture-resistant, thermally stable intake or exhaust valve for an internal combustion (IC) engine. The valve has a stem portion and a head portion, both of which are formed of fiber reinforced ceramic matrix composite (FRCMC) material. This FRCMC material generally includes a polymer-derived ceramic resin in its ceramic state, fibers, and filler materials. Employing FRCMC material to form the valve is advantageous as FRCMC material is highly temperature resistant and temperature stable, thereby allowing for increased engine operating temperatures. FRCMC material is also ductile, thus making the valve fracture resistant. The FRCMC material is also flaw-insensitive in that any flaw within the structure of the valve will not result in cracking and failure. In addition, FRCMC valves are considerably lighter than the existing metal valves. This provides an opportunity to reduce the weight of the overall valve train, thereby increasing engine performance. The addition of certain filler materials allows the FRCMC material to be tailored to exhibit a desired degree of harness and/or a desired coefficient of friction. Increasing the hardness of the head of the valve allows it to better withstand the violent environment of the engine cylinder, and lowering the coefficient of friction facilitates the valve movement within the engine.
    • 用于内燃(IC)发动机的耐断裂,热稳定的进气或排气阀。 阀具有杆部和头部,两者均由纤维增强陶瓷基复合材料(FRCMC)材料形成。 该FRCMC材料通常包括其陶瓷状态的聚合物衍生的陶瓷树脂,纤维和填料材料。 使用FRCMC材料形成阀是有利的,因为FRCMC材料具有高温度和温度稳定性,从而允许增加发动机工作温度。 FRCMC材料也是延性,从而使阀门断裂。 因为FRCMC材料也不具有缺陷性,因为阀门结构内的任何缺陷都不会导致开裂和失效。 此外,FRCMC阀门比现有的金属阀门要轻得多。 这提供了减轻整个气门机构的重量从而增加发动机性能的机会。 添加某些填充材料允许FRCMC材料被定制以显示所需程度的线束和/或所需的摩擦系数。 提高阀门头部的硬度使其能够更好地承受发动机气缸的剧烈环境,降低摩擦系数有利于发动机内的阀门运动。
    • 2. 发明授权
    • Ceramic composite materials having tailored physical properties
    • 具有定制物理性能的陶瓷复合材料
    • US06210786B1
    • 2001-04-03
    • US09172361
    • 1998-10-14
    • Steven Donald AtmurThomas Edward Strasser
    • Steven Donald AtmurThomas Edward Strasser
    • B32B1800
    • C04B35/80C04B35/571Y10T428/249928Y10T428/24993Y10T428/24994Y10T428/249944Y10T428/249945Y10T428/249948
    • A fiber-reinforced ceramic matrix composite (FRCMC) structure exhibiting tailored characteristics such as ductility, hardness, and coefficient of friction. Generally, this tailoring involves incorporating fibers into the composite in sufficient quantities to produce a certain degree of ductility, and if desired, incorporating filler material into the composite in sufficient quantities to produce a desired degree of other characteristics such as hardness and coefficient of friction. In both cases, the degree to which these respective characteristics are exhibited varies with the percent by volume of fibers and filler materials incorporated into the structure. Additionally, the degree to which these respective characteristics are exhibited varies with the form of fibers used (i.e., continuous or non-continuous) and with type of filler material employed. Thus, the tailoring of the characteristics exhibited by a FRCMC structure specifically involves selecting the quantity and form of the fibers that will produce the desired ductility, and selecting the amount and types of filler material that will produce the desired hardness and/or coefficient of friction in the FRCMC material.
    • 纤维增强陶瓷基复合材料(FRCMC)结构具有诸如延展性,硬度和摩擦系数等特性。 通常,这种裁缝包括将纤维以足够的量掺入复合材料中以产生一定程度的延展性,并且如果需要,将填充材料以足够的量掺入复合材料中以产生所需程度的其它特性如硬度和摩擦系数。 在这两种情况下,这些各自特征的展现程度随掺入结构的纤维和填料的体积百分比而变化。 此外,这些各个特性的展现程度随所用纤维的形式(即连续或不连续)和使用的填料类型而变化。 因此,FRCMC结构的特征的定制特别涉及选择将产生所需延展性的纤维的数量和形式,并选择将产生所需硬度和/或摩擦系数的填充材料的数量和类型 在FRCMC材料。
    • 8. 发明授权
    • Integrated fiber reinforced ceramic matrix composite brake pad and back
plate
    • 集成纤维增强陶瓷基体复合制动片和背板
    • US6062351A
    • 2000-05-16
    • US351574
    • 1999-07-12
    • Thomas Edward StrasserSteven Donald Atmur
    • Thomas Edward StrasserSteven Donald Atmur
    • F16D20060101F16D69/00
    • F16D69/023F16D69/04F16D2069/0441F16D2069/0483F16D2200/0047Y10T29/53648
    • An integrated brake pad and back plate having a brake pad section formed from a first fiber reinforced ceramic matrix composite (FRCMC) material and a back plate section formed from a second FRCMC material. The brake pad and back plate are integrated because the sections are molded together to form an integral, unitary structure. The first FRCMC material used in the brake pad section includes a pre-ceramic resin in its ceramic state, fibers and possibly a filler material. The types and amount of these constituents are generally chosen so as to impart characteristics desirable in brake pads, such as high temperature and erosion resistance, and a high coefficient of friction. The second FRCMC material used in the back plate section includes a pre-ceramic resin in its ceramic state and fibers. In this case, the types and amounts of the constituents making up the second FRCMC material are generally chosen to impart the strength to the back plate section necessary to withstand compressive and bending forces placed upon it during braking.
    • 一种具有由第一纤维增强陶瓷基复合材料(FRCMC)材料形成的制动衬块部分和由第二FRCMC材料形成的背板部分的集成制动衬块和背板。 制动块和后板是集成的,因为这些部分被模制在一起以形成一体的整体结构。 在制动片部分中使用的第一种FRCMC材料包括其陶瓷状态的预陶瓷树脂,纤维和可能的填充材料。 通常选择这些成分的种类和量,以赋予制动片所需的特性,例如耐高温和耐冲蚀性,以及高摩擦系数。 在背板部分中使用的第二FRCMC材料包括其陶瓷状态的预陶瓷树脂和纤维。 在这种情况下,构成第二FRCMC材料的组分的类型和数量通常被选择为赋予在制动期间承受施加在其上的压缩和弯曲力所必需的背板部分的强度。
    • 9. 发明授权
    • Fiber reinforced ceramic matrix composite internal combustion engine
intake/exhaust port liners
    • 纤维增强陶瓷基体复合内燃机进气/排气口衬管
    • US5964273A
    • 1999-10-12
    • US84476
    • 1998-05-26
    • Thomas Edward StrasserSteven Donald Atmur
    • Thomas Edward StrasserSteven Donald Atmur
    • C04B35/80F02B77/02F02F7/00B22D19/00
    • F02F7/0087C04B35/80F02B77/02F05C2203/08F05C2253/16
    • A heat-resistant, thermally insulative, ductile port liner for a head of an internal combustion (IC) engine having a tube-shaped structure formed from at least one layer of fiber reinforced ceramic matrix composite (FRCMC) material. The FRCMC material includes a polymer-derived ceramic resin in its ceramic form and fibers. In a first embodiment of the port liner, the tube-shaped structure has one FRCMC layer forming the sole, solid wall of the structure. Whereas, in a second embodiment, the tube-shaped structure has two FRCMC layers forming inner and outer walls of the structure, respectively, with an intervening space separating the inner and outer walls. The intervening space is sealed at both ends. It can be filled with a thermally insulating material, evacuated and held at substantially a vacuum pressure, or filled with a gas. Once the port liner has been formed, it is preferably cast-in-place when the metal head of the IC engine is formed. This entails positioning the port liners within a mold designed to form the metal head in locations corresponding to the intake and exhaust ports of the head. Then, the mold is filled with molten metal to form the head with the port liners being integrally cast therewith.
    • 一种具有由至少一层纤维增强陶瓷基复合材料(FRCMC)材料形成的管状结构的内燃(IC)发动机头部的耐热绝热的延性端口衬套。 FRCMC材料包括其陶瓷形式的聚合物衍生的陶瓷树脂和纤维。 在端口衬套的第一实施例中,管状结构具有一个FRCMC层,其形成该结构的底部实心壁。 而在第二实施例中,管状结构具有分别形成该结构的内壁和外壁的两个FRCMC层,其间隔开内壁和外壁。 中间空间在两端密封。 它可以填充绝热材料,抽真空并保持在基本上真空压力下,或填充气体。 一旦端口衬垫已经形成,当形成IC发动机的金属头时,优选地是现场浇注。 这需要将端口衬垫定位在设计成在对应于头部的进气和排气端口的位置形成金属头的模具内。 然后,用熔融金属填充模具以形成头部,端口衬套与其一体铸造。