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    • 31. 发明授权
    • Piston head structure
    • 活塞头结构
    • US4506593A
    • 1985-03-26
    • US460022
    • 1983-01-21
    • Masahiko SugiyamaKenichi Nishio
    • Masahiko SugiyamaKenichi Nishio
    • F02B3/06F02B23/06F02F3/00F02F7/00F16J1/04
    • F02B23/0696F02F3/0015F02F7/0087F02B2023/0612F02B3/06F05C2201/021F05C2201/0448F05C2203/0843F05C2251/042F05C2253/16Y02T10/125
    • A piston head structure in which a piston head made of a ceramic is firmly secured to the top portion of a metallic piston body through the medium of a metallic ring fitted to the lower part of the piston head. In assembling, the ceramic piston head to which the metallic ring is fitted beforehand is secured to the top portion of the piston body by a shrink fit or, alternatively, the assembly of the ceramic piston head and the metallic ring is inserted to the metallic material of the piston body during casting of the latter, and the cast piston body is then subjected to necessary mechanical processing. In this structure, the separation of the piston head from the piston body is prevented due to the close fit of the ceramic piston head and the metallic ring to the metallic piston body. Such a fit prevents separation even when the piston body is expanded due to the heat generated during operation of the engine. In addition, the ceramic piston head is protected by the metallic ring against any external force which acts to cause a cracking or breakage of the ceramic piston head, during the production of the piston.
    • 一种活塞头结构,其中由陶瓷制成的活塞头通过安装在活塞头的下部的金属环的介质牢固地固定到金属活塞体的顶部。 在组装中,预先安装有金属环的陶瓷活塞头通过收缩配合固定到活塞体的顶部,或者,陶瓷活塞头和金属环的组装被插入金属材料 在铸造活塞体的过程中,然后对铸造活塞体进行必要的机械加工。 在这种结构中,由于陶瓷活塞头和金属环与金属活塞体的紧密配合,可以防止活塞头与活塞体的分离。 这样的配合即使当活塞体由于发动机运转期间产生的热而膨胀时也能防止分离。 此外,在制造活塞期间,陶瓷活塞头被金属环保护,抵抗用于引起陶瓷活塞头的破裂或破裂的任何外力。
    • 39. 发明授权
    • Catalyst support and catalyst and process for producing the same
    • 催化剂载体和催化剂及其制备方法
    • US06221805B1
    • 2001-04-24
    • US09256234
    • 1999-02-24
    • Koichi YamashitaShinji TsujiNaoto MiyoshiOji KunoMasahiko SugiyamaKazumasa TakatoriTakao TaniNobuo Kamiya
    • Koichi YamashitaShinji TsujiNaoto MiyoshiOji KunoMasahiko SugiyamaKazumasa TakatoriTakao TaniNobuo Kamiya
    • B01J2304
    • B01D53/945B01J21/04B01J37/0045B01J37/0236Y02T10/22
    • A catalyst support, a catalyst using the catalyst support and a process for producing the same are disclosed. For instance, the catalyst support includes a composite oxide powder produced by spraying and burning a W/O type emulsion, the W/O type emulsion including an aqueous solution dispersed in an organic solvent, the aqueous solution containing aluminum as a major component and at least one co-metallic element in addition to the aluminum. Thus, the catalyst support can be produced less expensively without using any expensive alkoxide. Further, due to the spraying and burning, the composite oxide powder is composed of porous hollow particles which have a very thin shell thickness of dozens of nanometers, and makes the catalyst support which is amorphous and exhibits a large specific surface area. Hence, the catalyst support can maintain the large specific surface area even after a high-temperature durability test. Furthermore, the composite oxide powder includes the co-metallic element which is composited in such a highly dispersed manner that the agglomerated sulfates are less likely to be produced. Therefore, the catalyst support is inhibited from being poisoned by sulfur.
    • 公开了催化剂载体,使用催化剂载体的催化剂及其制备方法。 例如,催化剂载体包括通过喷雾和燃烧W / O型乳液而制备的复合氧化物粉末,W / O型乳液包括分散在有机溶剂中的水溶液,含有铝作为主要成分的水溶液, 除了铝之外还有至少一种共金属元素。 因此,不用任何昂贵的醇盐就可以不昂贵地生产催化剂载体。 此外,由于喷涂和燃烧,复合氧化物粉末由具有非常薄的几十纳米的壳厚度的多孔中空颗粒组成,并使催化剂载体是无定形的并且具有大的比表面积。 因此,即使在高温耐久试验之后,催化剂载体也能保持较大的比表面积。 此外,复合氧化物粉末包括以非常分散的方式复合的共金属元素,使得不太可能生产聚集的硫酸盐。 因此,抑制催化剂载体被硫中毒。