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    Method for manufacturing a forged piston with reinforced ring groove
    261.
    发明授权
    Method for manufacturing a forged piston with reinforced ring groove 失效
    用加强环槽制造锻造活塞的方法

    公开(公告)号：US4364159A

    公开(公告)日：1982-12-21

    申请号：US167850

    申请日：1980-07-14

    Applicant: W. Philip Holcombe

    Inventor： W. Philip Holcombe

    IPC: F02F3/08 ,  B21K1/18 ,  B21K25/00 ,  B23P15/10 ,  C22F1/04 ,  F16J9/22

    CPC classification number: F16J9/22 ,  B23P15/10 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448 ,  Y10T29/49256 ,  Y10T29/49865 ,  Y10T29/49915 ,  Y10T29/49938

    Abstract: The method effects a tight fit of a ferrous ring reinforcement at the head end of an aluminum alloy piston which tight fit remains during use of the piston. The procedural steps of the preferred method include: providing an aluminum alloy piston slug with an annular shoulder adjacent its head end; solution heat treating the aluminum alloy slug for one hour minimum at a temperature within the range of from 483.degree. C. to 510.degree. C. (900.degree. F. to 950.degree. F.); rapidly cooling the solution heat-treated aluminum alloy slug to create a super-saturated aluminum alloy solid solution; preheating the ferrous ring to approximately 538.degree. C. (1000.degree. F.), a temperature above the head end temperature during use of the piston, to expand the ring temporarily; preheating the aluminum alloy slug to a working temperature of approximately 204.degree. C. (400.degree. F.), a temperature below the head end temperature during use of the piston; telescopically assembling the preheated and temporarily expanded ring on the head end against the shoulder and forging to cause the super-saturated aluminum alloy to flow axially and transversely against the temporarily expanded ring; and age hardening the super-saturated aluminum alloy at a temperature within the range of from 210.degree. C. to 221.degree. C. (410.degree. F. to 430.degree. F.) for about nine hours to cause a constituent precipitation which, together with contraction of said ferrous ring upon cooling, effects a tight fit which remains during use of the piston.

    Abstract translation: 该方法实现了在活塞使用期间紧密配合的铝合金活塞头端处的铁环增强件的紧密配合。 优选方法的程序步骤包括：提供具有邻近其头端的环形肩部的铝合金活塞块; 在483℃至510℃（900°F至950°F）的温度范围内对铝合金块进行固溶热处理1小时。 快速冷却溶液热处理铝合金块，形成超饱和铝合金固溶体; 将镍铁环预热至约538℃（1000°F），在活塞使用期间高于头端温度的温度暂时膨胀环; 将铝合金块塞预热到约204℃（400°F）的工作温度，在活塞使用期间温度低于头端温度; 将预热和暂时膨胀的环在头端上可伸缩地组装在肩部上并锻造以使超饱和铝合金轴向和横向地流过临时膨胀的环; 并将超饱和铝合金在210℃至221℃（410°F至430°F）的温度下老化硬化约9小时以引起组分沉淀，其与 所述铁质环在冷却时的收缩，在使用活塞时保持紧密配合。

    Piston for internal combustion engines
    263.
    发明授权
    Piston for internal combustion engines 失效
    内燃机活塞

    公开(公告)号：US4346646A

    公开(公告)日：1982-08-31

    申请号：US170622

    申请日：1980-07-21

    Applicant: Jurgen Ellermann

    Inventor： Jurgen Ellermann

    IPC: F02F3/00 ,  F02F3/22 ,  F16J1/00 ,  F02F3/02

    CPC classification number: F02F3/0023 ,  F02F3/22 ,  F16J1/005 ,  F05C2201/021 ,  F05C2201/0448

    Abstract: Piston for internal combustion engines having a piston body consisting of light metal and a crown plate consisting of a metal of lower thermal conductivity which is secured axially to the piston body by means of necked-down screws and centered radially in relation to the piston body by means of an annular fit, and in which the outer ring of the fit is formed by the crown plate in the region of the sliding surface and the inner ring of the fit is formed by the piston body, in which at room temperature a gap widening in the direction towards the piston foot is provided between the annular surfaces of crown plate and piston body meeting in the annular fit, in such a way that the annular surfaces lie firmly against one another only at their ends pointing towards the piston head, and that this gap is reduced at working temperature.

    Abstract translation: 内燃机的活塞具有由轻金属组成的活塞体和由导热性较差的金属构成的冠状板，所述冠状体通过颈缩螺钉轴向固定在活塞体上，并相对于活塞体径向相对于活塞体定心 环形配件的装置，其中配合的外圈在滑动面的区域由顶板形成，并且配合的内圈由活塞体形成，其中在室温下间隙变宽 在朝向活塞脚的方向上设置在冠形板和活塞体的环形表面之间，以环形配合的方式会合，使得环形表面仅在指向活塞头的端部处彼此牢固地相互抵靠，并且， 这个差距在工作温度下降低。

    Two cycle internal combustion engine
    264.
    发明授权
    Two cycle internal combustion engine 失效
    两循环内燃机

    公开(公告)号：US4202299A

    公开(公告)日：1980-05-13

    申请号：US949863

    申请日：1978-10-10

    Applicant: Eyvind Boyesen

    Inventor： Eyvind Boyesen

    IPC: F01L3/20 ,  F02B33/04 ,  F02B33/30 ,  F02B75/02 ,  F02F1/22

    CPC classification number: F01L3/205 ,  F02B33/04 ,  F02B33/30 ,  F02F1/22 ,  F02B2075/025 ,  F02B2700/037 ,  F05C2201/0448

    Abstract: A two-cycle internal combustion engine having reed-type intake valving, and specially configured and positioned intake and injector porting, with the porting constructed and arranged to improve various of the operating characteristics of the engine, and particularly adapted to increase the effectiveness of the injection through the injector porting.

    Abstract translation: 具有簧片式进气阀和特别配置和定位的进气和喷油器端口的双循环内燃机，其端口构造和布置成改善发动机的各种操作特性，并且特别适于提高发动机的效率 通过注射器进样注入。

    Pistons for internal combustion engines or for compressors
    266.
    发明授权
    Pistons for internal combustion engines or for compressors 失效
    用于内燃机或压缩机的活塞

    公开(公告)号：US4074617A

    公开(公告)日：1978-02-21

    申请号：US705787

    申请日：1976-07-16

    Applicant: Frederick Edward Cockcroft

    Inventor： Frederick Edward Cockcroft

    IPC: F02F3/04 ,  F16J1/06 ,  F16J1/04

    CPC classification number: F02F3/047 ,  F16J1/06 ,  F05C2201/021 ,  F05C2201/0433 ,  F05C2201/0448 ,  F05C2251/042

    Abstract: A light metal piston for an engine or compressor has two sheet steel inserts. Each insert has two pairs of elongated bands extending circumferentially away from a gudgeon pin boss. The bands nearer the crown end of the piston skirt are longer than those nearer the open end of the skirt, and preferably are also wider, so as to exert greater thermal expansion control nearer the crown end of the skirt than nearer the open end.

    Abstract translation: 用于发动机或压缩机的轻金属活塞具有两个钢板插入件。 每个插入物具有两对细长带，其沿圆周方向延伸远离舵头销。 靠近活塞裙部的冠端部的条带比靠近裙边的开口端的条带更长，并且优选地也较宽，以便比靠近开口端更靠近裙边的冠端部发挥更大的热膨胀控制。

    Built up engine piston
    270.
    发明授权
    Built up engine piston 失效
    建造发动机活塞

    公开(公告)号：US3915141A

    公开(公告)日：1975-10-28

    申请号：US43582874

    申请日：1974-01-23

    Applicant: MASCHF AUGSBURG NUERNBERG AG

    Inventor： OTTL ADOLF ,  PFLEIDERER ERNST

    IPC: F02B3/06 ,  F02B23/06 ,  F02B75/02 ,  F02F3/00 ,  F02F3/22

    CPC classification number: F02B23/0696 ,  F02B3/06 ,  F02B2075/027 ,  F02F3/0023 ,  F02F3/22 ,  F05C2201/021 ,  F05C2201/0448 ,  Y02T10/125 ,  Y10T29/49256

    Abstract: A piston, particularly for use in heavy diesel motors, is built up of a piston head, an intermediate piece and a lower piston body piece. The piston head has internal annular ridges extending down to a plane joint surface and of a minimum height sufficient to accommodate tapped holes for the screws that fasten the middle piece to the piston head. The middle piece has a disc or annular base with a lower annular mounting surface and upwardly extending annular webs that meet the ridges of the piston head. The webs are disposed on conical surfaces that have their vertices on the piston axis, the outermost one having a vertex below the middle piece and the other having its vertex above. Additional webs and ridges may be used for very wide pistons. The bottom piece has a tapered annular upward extension meeting the base of the middle piece beneath the supporting webs and provision for screwing the bottom and middle piece together. An upper skirt forms part of the piston head and carries grooves for piston rings. An upward projection of the lower skirt serves to center the upper skirt. Efficient transmission of forces to the piston rod bearing with relatively light component parts and even distribution of thermal stresses is obtained as well as freedom from loosening the structure under suction.

    Abstract translation: 特别是用于重型柴油发动机的活塞由活塞头，中间件和下部活塞主体构成。 活塞头具有向下延伸到平面接合表面的内部环形脊，并且具有足够的最小高度以容纳用于将中间件紧固到活塞头的螺钉的螺纹孔。 中间件具有带有下环形安装表面的盘或环形底座，并且向上延伸的环形腹板与活塞头的脊部相接。 腹板设置在其顶点在活塞轴上的锥形表面上，最外侧的顶点在中间件下方具有一个顶点，另一个顶点位于顶部。 额外的腹板和脊可用于非常宽的活塞。 底部件具有锥形的环形向上延伸部，其在支撑腹板下面的中间件的基部，并将底部和中间部件拧紧在一起。 上裙部形成活塞头的一部分，并承载活塞环的槽。 下裙部的向上突出部用于使上裙部居中。 获得了具有相对较轻的部件和均匀的热应力分布的活塞杆轴承的力的高效传递，并且不会在抽吸下松动结构。

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