公开(公告)号：US06817333B2

公开(公告)日：2004-11-16

申请号：US10630424

申请日：2003-07-30

申请人： Yucong Wang ,  Donald L. Brown

发明人： Yucong Wang ,  Donald L. Brown

IPC分类号： F16J104

CPC分类号： F02F1/20 ,  F02F3/00

摘要： A piston assembly is provided for use in an engine. The piston assembly includes a piston body including a crown with a skirt extending from the crown. The skirt has an exterior surface. The exterior surface has a surface finish in a wave form with peaks and valleys, and having a roughness total between approximately 6 and 8 micrometers. The roughness total is defined as the difference between the highest peak and lowest valley within an assessment length. The surface finish has an approximate peak-to-peak distance between 0.18 and 0.23 mm within the assessment length. A composite coating is provided over the exterior surface.

摘要翻译： 提供用于发动机的活塞组件。 活塞组件包括活塞体，其包括具有从冠部延伸的裙部的冠部。 裙子有一个外表面。 外表面具有波峰形状的表面光洁度，具有峰值和谷值，粗糙度总计约为6至8微米。 粗糙度总数定义为评估长度内最高峰和最低谷之间的差异。 表面光洁度在评估长度内具有0.18至0.23毫米之间的近似峰 - 峰距离。 在外表面上提供复合涂层。

公开(公告)号：US06470792B1

公开(公告)日：2002-10-29

申请号：US09662853

申请日：2000-09-15

申请人： Hans-Albert Michel

发明人： Hans-Albert Michel

IPC分类号： F16J104

CPC分类号： F16J9/20

摘要： A piston ring includes a first radial flank; a second radial flank; and an outer rounded circumferential surface constituting a contact face of the piston ring. The rounded face has a circumferential crest line situated at a distance from the first radial flank which is more than one half of the axial piston ring height. The piston ring further has facing end surfaces defining a ring gap; and a circumferential groove provided in the outer rounded circumferential surface and extending axially from the second radial flank to the crest. The circumferential groove terminates adjacent each end surface at a distance therefrom.

摘要翻译： 活塞环包括第一径向侧面; 第二径向侧面; 以及构成活塞环的接触面的外圆周面。 圆形的表面具有一个周向的顶部线，该圆周脊线位于与第一径向侧面相距一定距离处，其大于轴向活塞环高度的一半。 活塞环还具有限定环形间隙的面向端面; 以及周向槽，设置在所述外圆周圆周表面中并且从所述第二径向侧向轴向延伸到所述顶部。 周向槽在距离其一端的相邻端表面处终止。

公开(公告)号：US06357341B1

公开(公告)日：2002-03-19

申请号：US09293881

申请日：1999-04-19

申请人： Hiroaki Watanabe ,  Shingo Motoda

发明人： Hiroaki Watanabe ,  Shingo Motoda

IPC分类号： F16J104

CPC分类号： F02F3/00 ,  F05C2251/042

摘要： In a reciprocating piston of an internal combustion engine comprising a piston skirt having a major-thrust-side skirt portion and a minor-thrust-side skirt portion, a projected circumferential width of the minor-thrust-side skirt portion is greater than a projected circumferential width of the major-thrust-side skirt portion. Additionally, the piston skirt is dimensioned so that the minimum thickness of the minor-thrust-side skirt portion is less than the minimum thickness of the major-thrust-side skirt portion.

摘要翻译： 在内燃机的往复运动活塞中，该内燃机具有活塞裙部，该活塞裙部具有大推力侧裙部和小推力侧裙部，小推力侧裙部的突出周向宽度大于突出部 主推力侧裙部的周向宽度。 此外，活塞裙的尺寸设计成使得小推力侧裙部的最小厚度小于主推侧裙部的最小厚度。

公开(公告)号：US06739239B1

公开(公告)日：2004-05-25

申请号：US10070090

申请日：2002-05-15

申请人： Stefan Burkart ,  Egon Stratmann

发明人： Stefan Burkart ,  Egon Stratmann

IPC分类号： F16J104

CPC分类号： F16J1/001

摘要： The invention relates to a molded piston, in particular an injection-molded piston (1) of fiber-reinforced plastic, which is seated slidably in a receiving bore (2) of a housing (4) and is embodied as a cup-shaped body with a piston bottom (6) and a sleevelike piston wall (8) protruding away from the bottom, and the face (10) of the piston bottom (6) pointing away from the piston wall (8)is pressure-loadable, and there is at least one injection point (46) oriented with a molding channel of a molding tool. The invention proposes that the injection point (46) is disposed on the other face (22) of the piston bottom (6), that is, the face pointing away from the pressure-loadable face (10), and the piston bottom (6), because of one or more recesses (48) present in this face (22), has a lesser wall thickness in the region of the injection point (46) than in the regions (52) adjoining it.

摘要翻译： 本发明涉及一种模制活塞，特别是纤维增强塑料的注射成型活塞（1），其可滑动地安置在壳体（4）的容纳孔（2）中，并被实施为杯形体 具有活塞底部（6）和从底部突出的套筒式活塞壁（8），活塞底部（6）远离活塞壁（8）的表面（10）是可压载的，并且在那里 是至少一个用模制工具的模制通道定向的注射点（46）。本发明提出，注射点（46）设置在活塞底部（6）的另一个面（22）上，即， 由于存在于该表面（22）中的一个或多个凹部（48），活塞底部（6）在远离压力加载面（10）的表面具有较小的壁厚， （46）比毗邻它的区域（52）中。

公开(公告)号：US06347575B1

公开(公告)日：2002-02-19

申请号：US09345100

申请日：1999-06-30

申请人： Benjamin V. Booher

发明人： Benjamin V. Booher

IPC分类号： F16J104

CPC分类号： F16J9/20

摘要： A piston and compression ring combination with a piston having a generally cylindrical configuration for mounting in a cylinder of an internal combustion engine, an annular groove adjacent the top of the piston; and a piston ring having an upper inwardly directed flange adapted to rest on top of the piston, the ring having a lower inwardly retaining foot adapted for fitting into the ring groove in the piston. Such combination for the purpose of diminishing ring crevice volume, improving performance and reducing engine emissions.

摘要翻译： 活塞和压缩环与具有大致圆柱形构造的活塞和压缩环组合，用于安装在内燃机的气缸中，邻近活塞顶部的环形槽; 以及活塞环，其具有适于搁置在活塞顶部上的上向内凸缘，所述环具有适于装配到活塞中的环槽中的下向内保持脚。 这种组合是为了减小环形缝隙体积，提高性能和减少发动机排放。

公开(公告)号：US06345569B1

公开(公告)日：2002-02-12

申请号：US09490150

申请日：2000-01-24

申请人： Kazuhide Take ,  Reiko Hiraide ,  Noriaki Kawai

发明人： Kazuhide Take ,  Reiko Hiraide ,  Noriaki Kawai

IPC分类号： F16J104

CPC分类号： F16J1/02 ,  F02F3/022 ,  F16J1/04

摘要： An object of the present invention is to effectively achieve the reduction in piston slap sound in both of an expansion stroke and a compression stroke in consideration of a difference between the behaviors of a piston in the expansion stroke and the compression stroke. For this purpose, in a piston P having a skirt 12 formed into an intermediately bulged barrel type, the axis L2 of a piston pin is offset with respect to the cylinder axis L1, and the decrement in radius of a lower skirt portion 20 is set to be large on a thrust side and small in an anti-thrust side. In the expansion stroke, the piston is positively swung, while the skirt 12 is put into abutment against a wall surface of a cylinder bore, thereby reducing the piston slap sound.

摘要翻译： 本发明的目的在于考虑到膨胀冲程中的活塞的行为与压缩行程之间的差异，有效地实现膨胀冲程和压缩冲程两者的活塞敲击声的减小。 为此，在具有形成为中间膨胀筒型的裙部12的活塞P中，活塞销的轴线L2相对于气缸轴线L1偏移，并且下裙部20的半径减小设定 在推力侧较大，在反推力侧较小。 在膨胀冲程中，活塞被积极地摆动，而裙部12被压靠在气缸孔的壁表面上，从而减小活塞敲击声。

公开(公告)号：US06260472B1

公开(公告)日：2001-07-17

申请号：US09123677

申请日：1998-07-28

申请人： Xiluo Zhu ,  Richard R. Gofton

发明人： Xiluo Zhu ,  Richard R. Gofton

IPC分类号： F16J104

CPC分类号： F02F3/003 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448

摘要： A one-piece piston (20) formed by an upper crown (28) and a lower crown (30) having an integral skirt (24, 26). The upper crown (28) includes an upper surface (32) and a lower surface (34, 42). The lower crown (30) includes an upper surface (50) and two pin bosses (52, 54). The upper crown (28) has a first collar (44) and the lower crown (30) has a second collar (64). In addition, skirt ribs (24, 26) connect the two pin bosses (52, 54). The first and second collars (44, 64) are secured together to form the one-piece piston (20).

摘要翻译： 由具有整体裙部（24,26）的上冠（28）和下冠（30）形成的一体式活塞（20）。 上冠（28）包括上表面（32）和下表面（34,42）。 下冠（30）包括上表面（50）和两个销凸起（52,54）。 上冠部（28）具有第一套环（44），下冠部（30）具有第二套环（64）。 此外，裙边肋（24,26）连接两个销钉凸起（52,54）。 第一和第二轴环（44,64）被固定在一起以形成一体式活塞（20）。

公开(公告)号：US06240828B1

公开(公告)日：2001-06-05

申请号：US09288715

申请日：1999-04-09

申请人： Hiroya Fujimoto

发明人： Hiroya Fujimoto

IPC分类号： F16J104

CPC分类号： F02F3/08 ,  F02F3/02 ,  F05C2251/042

摘要： A piston of an internal combustion engine, comprises a skirt portion in sliding-contact with a cylinder wall, an inner crown-plus-boss portion having a crown portion and piston-pin boss portions, and a stay portion interconnecting the skirt portion and the inner crown-plus-boss portion at a lower portion of the piston. Also provided is an annular partition groove through which a rim of the skirt portion and the inner crown-plus-boss portion are partitioned all around the circumference of the upper portion of the piston. A thermal-expansion absorption ring is tightly fitted into the annular partition groove in a gas tight-fashion. The top face of the inner crown-plus-boss portion, the flat face of the rim of the skirt portion, and the top wall of the thermal-expansion absorption ring serve as a piston crown.

摘要翻译： 内燃机的活塞包括与气缸壁滑动接触的裙部，具有冠部和活塞销凸起部的内冠加上凸台部，以及将裙部和 在活塞下部的内冠凸台部分。 还设置有环形分隔槽，裙部的边缘和内冠冠部凸起部分通过该环形分隔槽围绕活塞上部的圆周分隔开。 热膨胀吸收环以气密方式紧密地装配到环形分隔槽中。 内冠凸台部分的顶面，裙部边缘的平坦面和热膨胀吸收环的顶壁用作活塞冠。

公开(公告)号：US06705207B2

公开(公告)日：2004-03-16

申请号：US10086479

申请日：2002-02-28

申请人： Masakazu Murase ,  Tatsuya Koide ,  Takayuki Imai

发明人： Masakazu Murase ,  Tatsuya Koide ,  Takayuki Imai

IPC分类号： F16J104

CPC分类号： F04B27/0878 ,  F05C2201/021 ,  F05C2201/049 ,  F05C2201/0493 ,  F05C2201/0496 ,  F05C2225/04 ,  F05C2253/12

摘要： A piston type compressor has a housing, a cylinder block and a piston. The cylinder block is fixed to the housing. The piston is accommodated in the cylinder block. A piston ring is provided between the cylinder block and the piston. A sealing coat is made of soft metal, and is provided between the piston ring and the piston.

摘要翻译： 活塞式压缩机具有壳体，气缸体和活塞。 气缸体固定在壳体上。 活塞容纳在气缸体中。 活塞环设置在气缸体和活塞之间。 密封涂层由软金属制成，并设置在活塞环和活塞之间。

公开(公告)号：US06588320B2

公开(公告)日：2003-07-08

申请号：US09749705

申请日：2000-12-27

申请人： Randall R. Gaiser ,  Xiluo Zhu

发明人： Randall R. Gaiser ,  Xiluo Zhu

IPC分类号： F16J104

CPC分类号： F02F3/003 ,  B23P15/10 ,  F02F3/025 ,  F02F2200/04 ,  F05C2201/0448

摘要： A piston (10) particularly suited for heavy duty diesel engine applications includes upper and lower crown sections (28, 30) joined by a friction weld (32) to define an annular ring belt (14) formed with ring groves (22) and having a lower end (20) and an internal piston cooling chamber (34). A pair of pin bosses (40) depend from the ring belt (14) and are formed as one piece with the lower crown section (30). A skirt (46) is also formed as one piece with the pin bosses (40) and has an upper end (48) that is spaced from the lower end (20) of the ring belt (14) to define a space (52) therebetween which effectively uncouples the skirt (46) from the ring belt (14).

摘要翻译： 特别适用于重型柴油发动机应用的活塞（10）包括通过摩擦焊接（32）连接以限定形成有环形槽（22）的环形环带（14）的上部和下部冠形部分（28,30），并且具有 下端（20）和内部活塞冷却室（34）。 一对销凸起（40）从环形带（14）上取下，并与下冠部（30）一体形成。 裙部（46）也与销凸起（40）形成为一体，并且具有与环带（14）的下端（20）间隔开的限定空间（52）的上端（48） 其间有效地将裙部（46）与环带（14）分离。