Aluminum casting alloy
    102.
    发明公开
    Aluminum casting alloy 失效
    铝Gusslegierung。

    公开(公告)号:EP0485068A1

    公开(公告)日:1992-05-13

    申请号:EP91309116.1

    申请日:1991-10-04

    IPC分类号: C22C21/12 C22F1/057 F02F3/28

    摘要: An aluminum casting alloy consisting of, by weight, of 7.0-13.0% copper, .4-1.2% manganese, .21-.40% vanadium, .31-.70% zirconium; impurities limited to: less than to 0.6% Si, less than 0.8% Fe, less than .2% zinc, less than 0.1% Mn, less than 0.2% Ni, and the remainder being essentially aluminum. There is an absence of titanium, cobalt, molybdenum, tungsten, chromium, boron, tantalum, and niobium. The alloy has, at room temperature, a UTS of about 61 ksi, a YS of about 49 ksi, a tensile elongation of about 6%, and tensile modulus elasticity of about 11.5 MSi, a compressive yield strength of about 53 ksi, a compressive modulus of elasticity of about 18 MSi; high temperature physical properties at 500 o F, after 1000 hours exposure to 500 o F, comprise a tensile strength of 33 ksi or greater, a tensile yield strength of 23 ksi or greater, a tensile elongation of about 9%, and tensile modulus of elasticity of 10 msi. The alloy is fabricated by a) squeeze casting an aluminum alloy melt of such character; (b) extracting the solidified casting from the die and heat treating the casting to dissolve all alloying elements (i.e., 995-1018 o F for 7-20 hours); and (c) ageing the solution treated casting to achieve improved strength characteristics (i.e., in the range of 340-400 o F for 5-20 hours).

    摘要翻译: 一种铝铸造合金,其重量含量为7.0-13.0%的铜,0.4-1.2%的锰,.21-40%的钒,.3.3-70%的锆; 杂质限于:小于0.6%的Si,小于0.8%的Fe,小于0.2%的锌,小于0.1%的Mn,小于0.2%的Ni,余量基本上是铝。 没有钛,钴,钼,钨,铬,硼,钽和铌。 该合金在室温下具有约61ksi的UTS,约49ksi的YS,约6%的拉伸伸长率和约11.5Mii的拉伸模量弹性,约53ksi的压缩屈服强度,压缩屈服强度 弹性模量约18 MSi; 在500°F下暴露于1000℉1000小时后的高温物理性能包括33ksi或更大的拉伸强度,23ksi或更大的拉伸屈服强度,约9%的拉伸伸长率, 拉伸弹性模量为10毫秒。 该合金通过以下方法制造:a)挤压铸造具有这种性质的铝合金熔体; (b)从模具中提取凝固的铸件并对铸件进行热处理以溶解所有合金元素(即995-1018°F 7-20小时); 和(c)使溶液处理的铸件老化以获得改进的强度特性(即在340-400°F的范围内5-20小时)。

    Low friction, wear resistant plastic parts
    104.
    发明公开
    Low friction, wear resistant plastic parts 失效
    低摩擦,抗磨损塑料部件

    公开(公告)号:EP0363941A3

    公开(公告)日:1991-06-12

    申请号:EP89118916.9

    申请日:1989-10-11

    IPC分类号: C08J7/12 C08J7/00 F16D65/16

    摘要: Plastic molded articles having low friction and excellent wear resistance are produced by treating the surface of the plastic article with an aqueous solution of an inorganic fluoride such as hydrogen fluoride. Plastic articles which can be made in accord­ance with the invention include plastic brake pistons, bearings, motors and drives, commutators, slip ring alternators for DC drive motors, thrust washers, spacers and reactors, clutch plates, elec­trical switching equipment with sliding parts, gears, pulleys for belt drives, such as cog belt pulleys, V-belt pulleys and poly V-belt pulleys, gas meter discs, and the like. In addition to the treatment step, the plastic articles are neutralized, washed and dried.

    摘要翻译: 通过用诸如氟化氢的无机氟化物的水溶液处理塑料制品的表面来生产具有低摩擦力和优异耐磨性的塑料模塑制品。 可根据本发明制造的塑料制品包括塑料制动器活塞,轴承,电动机和驱动器,换向器,用于直流驱动电机的滑环交流发电机,止推垫圈,间隔件和电抗器,离合器片,具有滑动部件的电气开关设备,齿轮 用于皮带传动的滑轮,例如齿轮皮带轮,V形皮带轮和多V带皮带轮,气表盘等。 除了处理步骤之外,塑料制品被中和,洗涤和干燥。

    Heat-insulating piston
    105.
    发明公开
    Heat-insulating piston 失效
    绝热活塞

    公开(公告)号:EP0417931A1

    公开(公告)日:1991-03-20

    申请号:EP90309426.6

    申请日:1990-08-29

    IPC分类号: F02F3/00 F02F3/12 F16J1/01

    摘要: A heat-insulating piston comprises a ceramic cylindrical member (4) having the lower end surface thereof in contact with the outer peripheral upper end surface of a piston skirt member (2), a head base member (1) having the peripheral portion thereof in contact with an inner peripheral step portion (12) of the cylindrical member (4) and fixed to the piston skirt member (2), a heat-insulating member (3) disposed on the head base member (1) and a ceramic thin film member (5) disposed on the heat-insulating member (3) and having the peripheral portion (13) thereof bonded to the cylindrical member (4), this invention relating to a heat-insulating piston which has metallic heat-resistant members (10) between the inner peripheral step (12) portion of the cylindrical member (4) and the peripheral portion (13) of the head base member (1) in order to prevent the occurrence of a gap between the thin film member (5) and the heat-insulating member (3).

    摘要翻译: 绝热活塞包括:陶瓷圆筒形部件(4),其下端表面与活塞裙部件(2)的外周上端表面接触;头部基座部件(1),其周边部分位于 与圆筒形部件(4)的内周边台阶部分(12)接触并固定在活塞裙部件(2)上;设置在头部基座部件(1)上的绝热部件(3);陶瓷薄膜 (3)上并且其周边部分(13)与圆筒形构件(4)粘合的构件(5),本发明涉及一种绝热活塞,该绝热活塞具有金属耐热构件(10 )在圆筒形部件(4)的内周边台阶(12)部分和头部基座部件(1)的周边部分(13)之间,以防止薄膜部件(5)和 隔热部件(3)。

    Piston assembly of internal combustion engine
    106.
    发明公开
    Piston assembly of internal combustion engine 失效
    Kolbenzusammenbaufüreine Brennkraftmaschine。

    公开(公告)号:EP0411913A1

    公开(公告)日:1991-02-06

    申请号:EP90308443.2

    申请日:1990-07-31

    IPC分类号: F02F3/00 F16J9/00 F16J9/20

    摘要: The piston has a top land (1) and a second land (3) between which a ring groove (2a) is formed. A chamfered surface (3a) at the upper peripheral edge of the second land (3) has a width (C₁) larger than that of a chamfered surface at the lower peripheral edge of the top land (1). A compression ring (2) having a butt-type ring gap is disposed in the groove (2a) to be slidably contacted with the cylinder wall. With this structure, the oil consumption is effectively suppressed in both a high pressure condition and a negative pressure condition of the combustion chamber.

    摘要翻译: 活塞具有顶面(1)和第二平台(3),在其间形成有环形槽(2a)。 在第二焊盘(3)的上周缘处的倒角面(3a)的宽度(C1)比顶部焊盘(1)的下周缘处的倒角面的宽度(C1)大。 具有对接型环形间隙的压缩环(2)设置在凹槽(2a)中以与气缸壁可滑动接触。 利用该结构,在燃烧室的高压状态和负压条件下都能有效地抑制油耗。

    Kolben für Kolbenmaschinen
    108.
    发明公开
    Kolben für Kolbenmaschinen 失效
    KolbenfürKolbenmaschinen。

    公开(公告)号:EP0396898A1

    公开(公告)日:1990-11-14

    申请号:EP90106187.9

    申请日:1990-03-30

    申请人: Hydromatik GmbH

    发明人: Wagenseil, Ludwig

    IPC分类号: F04B21/04 F16J1/00

    摘要: Ein Kolben (1) für Kolbenmaschinen, bestehend aus einem zumindest an seinem freien Ende (7) offenen Hohlkörper (3) mit einem axialen Hohlraum (4), in dem sich ein letzteren wenigstens teilweise ausfüllendes Füllstück (5) aus einem spezifisch leichteren Material als das Material des Kolbens (1) befindet, wobei das Füllstück (5) im Hohlraum 4 befestigt und durch ein am freien Ende des Hohlkörpers (3) angeordnetes Sicherungselement (8) und eine zwischen dem Sicherungselement (8) und dem Füllstück (5) angeordnete Feder (6) im Hohlraum (4) axial gesichert ist, ist so auszugestalten, daß das Füllstück (5) axial angebracht ist und die axiale Sicherung und Befestigung allein durch die Feder (6) gebildet ist, die durch das Sicherungselement (8) so weit vorgespannt ist, daß sie mit einer Federkraft gegen das Füllstück (5) wirkt, die größer ist, als die im Funktionsbetrieb maximal zu erwartenden gegen die Feder (6) wirkenden Massenträgheitskräfte des Füllstücks.

    摘要翻译: 一种用于活塞机械的活塞(1),包括至少在其自由端(7)处敞开的中空体(3),其具有轴向中空室(4),其中材料的填充件(5)特别轻 活塞(1)的材料并且至少部分地填充该活塞的材料位于,填充件(5)固定在中空室(4)中并通过固定元件(8)轴向固定在中空室(4)中, 布置在中空体(3)的自由端上并且布置在固定元件(8)和填充片(5)之间的弹簧(6)应被设计成使得填充件(5)轴向安装, 轴向固定和固定仅由弹簧(6)形成,弹簧(6)由固定元件(8)预拉伸到使其以大于最大预期值的弹簧力作用在填充件(5)上的程度 填充件在操作中作用于弹簧(6)的惯性力。 ... ...

    PISTON ASSEMBLY AND PISTON MEMBER THEREOF HAVING A PREDETERMINED COMPRESSION HEIGHT TO DIAMETER RATIO
    109.
    发明公开
    PISTON ASSEMBLY AND PISTON MEMBER THEREOF HAVING A PREDETERMINED COMPRESSION HEIGHT TO DIAMETER RATIO 无效
    活塞,与压缩高度和直径活塞之间有一定的关系往复式内燃机。

    公开(公告)号:EP0393142A1

    公开(公告)日:1990-10-24

    申请号:EP89901632.0

    申请日:1988-12-27

    申请人: CATERPILLAR INC.

    IPC分类号: F02F3 F16J1 F02B3

    摘要: Les moteurs diesel actuels dotés d'ensembles à pistons en aluminium sont limités à des pressions de chambre de combustion d'approximativement 12.410 kPa (1.800 psi), tandis que les efforts de recherche ont pour objectif d'augmenter ces pressions jusqu'à une plage de 15.170 kPa (2.200 psi). Afin d'atteindre ces niveaux l'ensemble à piston (76) de l'invention comprend un élément de piston (78) en acier ayant une partie cylindrique supérieure (96) d'un diamètre ''D'' et une hauteur de compression ''CH''. Le rapport entre la hauteur de compression ''CH'' et le diamètre ''D'' étant situé dans la plage comprise entre 60 % et 45 %. Ledit élément de piston (78) est de préférence forgé puis usiné à des dimensions pouvant être commandées avec précision. De plus, l'ensemble à piston (78) est de préférence du type articulé et comprend une jupe (80) de piston en aluminium forgé, reliée à l'élément de piston (78) par l'intermédiaire d'un maneton commun (82). Les constructeurs de moteurs cherchent également à réduire la taille du moteur tout en maintenant la puissance, ainsi qu'à améliorer la consommation de carburant et à réduire les émissions. L'élément de piston (76) de l'invention constitue une solution simple et économique satisfaisant la relation entre la puissance accrue et une taille réduite. Afin de produire un ensemble de moteur de taille réduite, ledit élément de piston (78) a un rapport entre la hauteur de compression et le diamètre maximum situé dans la plage comprise entre 60 % et 45 %. Ledit élément de piston (78) est de préférence en acier forgé afin d'assurer une porosité réduite par rapport à celle des pièces coulées standard existantes.

    Heat-insulating engine structure
    110.
    发明公开
    Heat-insulating engine structure 失效
    绝热发动机结构

    公开(公告)号:EP0294092A3

    公开(公告)日:1989-10-25

    申请号:EP88304742.5

    申请日:1988-05-25

    IPC分类号: F02F1/24 F02F7/00 F02B77/11

    摘要: In order to improve the suction efficiency and the cycle efficiency, a heat-insulating engine structure (10) of the invention has a planar and thin-­walled piston head surface portion (4) of a ceramics material to be exposed to combustion gases. A combustion chamber (15) is formed not on the side of the piston head but on the side of a cylinder head. Namely, the piston head is defined by the cooperation of a cylinder head bottom wall portion (26) having a lowered central portion and a raised outer peripheral portion (18) and a cylinder liner upper portion (28) including an upper tubular part of a substantially square cross-section and a lower cylindrical part. The cylinder head bottom wall portion has an inclined surface radially upwardly extending from the central portion to the outer peripheral portion. Intake and exhaust valves (21, 27) are associated with valve seats formed in the inclined surface. A fuel injection nozzle (25) is disposed substantially centrally of the cylinder head bottom wall portion. The sides of the square tubular part are operative to agitate a swirl to facilitate uniform mixture of fuel and air thereby assuring that the fuel and air are mixed instantaneously in a zone adjacent to the top dead center of the piston.