公开(公告)号：WO01027441A1

公开(公告)日：2001-04-19

申请号：PCT/US2000/041088

申请日：2000-10-06

IPC: F02F3/00 ,  F02F3/22 ,  F01B31/08

CPC classification number: F02F3/003 ,  F02F3/22 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448

Abstract: A heavy duty diesel piston includes upper and lower portions (102, 104) joined across a friction weld and internally contoured to provide a dual gallery structure including an outer annular gallery (122) and a central gallery (120) joined by passages for communicating cooling oil therebetween. The dual-gallery structure allows oil to enter from the outer gallery (122), which is formed by the circumferential annular recess (101) in the crown and crown bottom, into the central gallery (120) to cool the piston and particularly the central crown region exposed to hot combustion gases. The friction weld provides high structural integrity and minimizes the number of manufacturing steps need to attach the crown to the crown bottom.

Abstract translation: 重型柴油活塞包括跨越摩擦焊接件并且内部轮廓连接的上部和下部（102,104），以提供一个双重画廊结构，其包括通过通道连接的外部环形画廊（122）和中央画廊（120），用于连通冷却 油之间。 双画廊结构允许油从外部廊道（122）进入，该外部廊道（122）由冠部和冠部底部中的周向环形凹部（101）形成到中央画廊（120）中，以冷却活塞，特别是中央 冠部区域暴露于热燃烧气体。 摩擦焊接提供了高结构完整性，并且最小化需要将表冠附接到表冠底部的制造步骤的数量。

公开(公告)号：WO00053914A1

公开(公告)日：2000-09-14

申请号：PCT/US2000/006238

申请日：2000-03-10

IPC: B21C23/18 ,  B21J5/02 ,  B21K1/18 ,  C22F1/04 ,  F02F3/00 ,  F02F7/00 ,  F16J1/01

CPC classification number: B21J5/02 ,  B21C23/186 ,  B21K1/18 ,  F02F3/00 ,  F02F7/0087 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448

Abstract: A piston production method produces an internal combustion engine piston. The method comprises forging a billet from an initial billet comprising an aluminum alloy that comprises silicon, intermetallic particles, and injected hardening particles, the forging is conducted under at least one of super-plasticity and hot deformation conditions; and heat treating the forged billet. The forging comprises forging at a temperature in a range from about 0.8 Tmelt to about 0.98 Tmelt. The forging also comprises forging at a STRAIN rate in a range from about 5x10 s to about 5x10 s . The piston being formed with a configuration that enables other parts to be connected to the piston. The initial billet comprises at least one of: coarse grain silicon, intermetallic particles, and injected hardening particles having at least one of a lamellar, comprehensive shape, and fine grain silicon, intermetallic particles, and injected hardening particles being globular in shape. The silicon, intermetallic and injected hardening particle volume content is in a range from about 25 % to about 60 %, and an average grain size of the silicon, intermetallic, and injected hardening particles is less than about 15 mu m .

Abstract translation: 活塞生产方法产生内燃机活塞。 该方法包括从包括硅，金属间化合物颗粒和注入的硬化颗粒的铝合金的初始坯料锻造钢坯，锻造在超塑性和热变形条件中的至少一个下进行; 并对锻造坯料进行热处理。 锻造包括在约0.8Mtm至约0.98Tm范围内的温度下进行锻造。 该锻造还包括以约5×10 -2 s -1至约5×10 -5 s -1的范围锻造。 活塞形成有使其他部件能够连接到活塞的构造。 初始坯料包括以下中的至少一种：粗晶硅，金属间化合物颗粒和注入的硬化颗粒，其具有层状，综合形状和细晶粒硅，金属间颗粒和注入的固态颗粒中的至少一种为球形。 硅，金属间化合物和注入的硬化颗粒体积含量在约25％至约60％的范围内，硅，金属间化合物和注入的硬化颗粒的平均晶粒尺寸小于约15μm2。

公开(公告)号：WO00006882A1

公开(公告)日：2000-02-10

申请号：PCT/US1999/015859

申请日：1999-07-13

IPC: F02F3/00

CPC classification number: F02F3/003 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448

Abstract: 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).

Abstract translation: 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：WO00000725A1

公开(公告)日：2000-01-06

申请号：PCT/US1999/012547

申请日：1999-06-04

IPC: F02B3/06 ,  F02B23/02 ,  F02B41/04 ,  F02B47/02 ,  F02D15/00 ,  F02D19/12 ,  F02F3/14 ,  F02M25/022

CPC classification number: F02M25/0228 ,  F02B3/06 ,  F02B41/04 ,  F02B47/02 ,  F02B2275/32 ,  F02F3/14 ,  F02F2200/04 ,  F02M25/038 ,  F05C2201/021 ,  F05C2201/0448 ,  Y02T10/121 ,  Y02T10/142 ,  Y02T10/16

Abstract: Highly efficient engine. The system includes an internal combustion engine having at least one piston in a cylinder, the cylinder including a cylinder head. The engine operates on an unsymmetrical expansion and compression cycle wherein the expansion portion of the cycle is greater than the compression portion of the cycle. The piston and cylinder head are lined with an insulating material having a selected thermal diffusivity. Apparatus is provided for injecting a supercritical mixture of fuel and water into the cylinder of the engine. The combination of these aspects results in a highly efficient engine.

Abstract translation: 高效发动机 该系统包括在气缸中具有至少一个活塞的内燃机，气缸包括气缸盖。 发动机在不对称的膨胀和压缩循环中运行，其中循环的膨胀部分大于循环的压缩部分。 活塞和气缸盖内衬有具有选定热扩散率的绝缘材料。 提供了用于将燃料和水的超临界混合物喷射到发动机气缸中的装置。 这些方面的组合导致高效率的发动机。

公开(公告)号：WO99058839A1

公开(公告)日：1999-11-18

申请号：PCT/EP1999/002400

申请日：1999-04-09

IPC: F02F3/00 ,  F16J1/02 ,  F16J9/28 ,  F16J10/04

CPC classification number: F16J9/28 ,  F02F3/0084 ,  F05C2201/021 ,  F05C2201/0433 ,  F05C2201/0448 ,  F05C2203/0882 ,  F16J1/02 ,  F16J10/04

Abstract: The invention relates to a guide arrangement, especially for a piston-cylinder arrangement, comprising a cylinder (3) in which a bearing section of a piston (2) can be displaced axially along its inner bore (5) configured as a piston bearing surface (6) and a piston (2) to which a connecting rod can be coupled by means of a pin. At least two cylindrical and peripheral bearing sections (9a, 10a) radially delimiting the piston (2) and serving as support on the bearing surface (6) of the cylinder (3) are releasably arranged on said piston (2) by means of two parts (7, 8) of the piston (2), at least one of which penetrates a central opening of the bearing sections (9a, 10a). The forces and torques are evenly distributed on the at least two bearing sections in the axial extension of the piston (2) in such a way that the bearing sections are arranged outside the axle of the pin and at least one section (9a) of the at least two bearing sections (9a, 10a) is completely arranged on one side of the axle of the pin (20) and at least the other section (10a) of the at least two bearing sections (9a, 10a) is completely arranged on the other side of the axle of the pin (20). In addition, the bearing sections (9a, 10a) are fixed at a fixed reciprocal axial distance (11) in relation to each other. Force is transmitted from the pin to the bearing sections (9a, 10a) exclusively through the central parts (7, 8) of the piston (2). A favorable tribologic pairing is achieved in that one of the materials of the pairing bearing section (9a, 10a) guide surface (6) is chosen from the group comprising polycrystalline diamond, amorphous hydrocarbon, tetragonally coordinated hydrocarbon and metal-containing hydrocarbon and in that the other material of the pairing is selected from the group comprising mesophase graphite and ultrafine grain graphite.

Abstract translation: 本发明涉及一种导引装置，尤其是活塞 - 缸组件，其包括缸（3），形成沿该活塞导向表面（6）的内孔（5），活塞（2）的滑动部分是轴向可移动的，和活塞（2） 在其上的连接杆可铰接地安装在由一个螺栓，其特征在于，至少两个所述活塞（2）径向地限定，圆柱形和旋转滑动部分（9A，10A），用于抵靠引导面抵接（6）的汽缸（3）的可释放地由两个部分 （7,8）的活塞（2），其中至少一个穿过所述滑动部分（9A，10A）的活塞（2）被布置在中央开口。 的力和力矩在所述活塞（2）的轴向延伸部被均匀地分布在至少两个滑动部在于，在螺栓的轴外侧的滑动部被完全在一方面，所述至少两个滑动部分（9A，10A）的配置和至少一个（9a）和 所述至少两个滑动部分（9A，10A）中的至少一个其它（10A）上的螺栓（20），使得在固定的相互的轴向距离（11）的滑动部分（9A，10A）被固定到彼此的轴线的另一侧完全布置，并且 力从螺栓到滑动部分（9A，10A）仅经由间接的中心部分的变速器（7,8）的活塞（2）设置。 此外，有利的摩擦学配对的实现在于所述配合滑动部（9A，10A）的材料 - 引导面（6）选自多晶金刚石，无定形烃，四方协调碳和含金属的烃组成的组，和的其他材料中选择 配对选自石墨和mesophasiger超细晶粒石墨的组中选择。

公开(公告)号：WO1997048895A1

公开(公告)日：1997-12-24

申请号：PCT/BR1997000035

申请日：1997-06-13

Applicant: METAL LEVE S.A. INDUSTRIA E COMÉRCIO ,  NIGRO, Eduardo, Bueno ,  SARABANDA, José, Valentim, Lima ,  CLEMENTE, Marcos ,  DE MOREIRA ALMEIDA, Germano

Inventor： METAL LEVE S.A. INDUSTRIA E COMÉRCIO

IPC: F02F03/00

CPC classification number: F02F7/0085 ,  F02B3/06 ,  F02B23/0672 ,  F02F3/00 ,  F02F3/26 ,  F02F3/28 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2253/16 ,  F16J1/16 ,  Y02T10/125

Abstract: A piston for an internal combustion engine, for high speed Diesel engines used in passenger or light load cars, comprising a single piece made from an alloy with a density which is lower than about 3g/cm and a yield stress which is higher than about 120 MPa at temperatures of about 300 DEG C to 350 DEG C and having: a height (H) of 4 - 8 mm for the burning zone defined between the piston upper face and the uppermost peripheral groove (13); a thickness (E) for the bottom wall (12) of the combustion chamber (11) corresponding to 5 - 9 % of the piston diameter (D); and a projected bearing area by which the piston is supported on the wrist pin equal to twice the product of the diameter (D) of the hole (31), for bearing the wrist pin, by the axial extension (L) of said hole (31) and corresponding to 7 - 14 % of the square of the piston diameter (D).

Abstract translation: 用于乘客或轻载车辆的用于高速柴油发动机的内燃机的活塞包括由密度低于约3g / cm 3的合金制成的单件，并且屈服应力较高 在约300℃至350℃的温度下约120MPa，并且具有：在活塞上表面和最上周边槽（13）之间限定的燃烧区域的高度（H）为4-8mm; 燃烧室（11）的底壁（12）的厚度（E）对应于活塞直径（D）的5-9％。 以及活塞被支撑在腕销上的突出轴承面积等于孔（31）的直径（D）的乘积的两倍，用于承载腕针，由所述孔的轴向延伸（L）（ 31），对应于活塞直径（D）的平方的7〜14％。

公开(公告)号：WO1996020340A1

公开(公告)日：1996-07-04

申请号：PCT/DE1995001481

申请日：1995-10-21

Applicant: MAHLE GMBH ,  KEMNITZ, Peter

Inventor： MAHLE GMBH

IPC: F02F03/22

CPC classification number: B23P15/10 ,  F02F3/22 ,  F02F2200/04 ,  F05C2201/0448 ,  Y10T29/49249 ,  Y10T29/49265 ,  Y10T29/49996

Abstract: The invention concerns a method of producing a one-part piston (6) which, in the region of the piston ring zone (3), has a closed cooling duct (8) and a recess (7) between the piston ring zone (3) and the box-shaped piston body (4). The method comprises the following steps: a piston blank (1) is produced by a forging process; the annular recess (7) is produced by machining, the axial height of the recess corresponding at least to the axial height of the cooling duct (8); the cooling duct (8), which is open at the bottom, is produced by machining; hub bores (9) are formed and the outer contour of the piston (6) is finished; and the cooling duct (8), which is open at the bottom, is closed by a two-part cover ring (10).

Abstract translation: （3）以获得具有封闭的冷却通道（8）在活塞环带（3）和所述活塞环带和盒活塞轴之间的凹部（7）的区域（4），包括以下步骤的方法，提出了（6）的单件式活塞：活塞空白 （1）在锻造过程中产生时，环形凹部（7）通过机械加工安装，和它们的轴向高度至少等于所述冷却管道（8）向下开口的冷却通道（8），通过机械加工的装置，轴毂孔引入的轴向高度 （9）被安装，并在活塞的外轮廓（6）结束时，向下开口的冷却通道（8）由一两部分的盖环（10）封闭。

公开(公告)号：WO1995027132A1

公开(公告)日：1995-10-12

申请号：PCT/FR1995000379

申请日：1995-03-27

Applicant: CHATELAIN, Michel

IPC: F02F03/00

CPC classification number: F02F3/0023 ,  F05C2201/0448 ,  F16J9/00

Abstract: A machine (1) comprising a body (2) with at least one cylinder (3) and at least one piston (4) in the cylinder bore, comprising at least one annular groove (4a) for receiving a ring seal (51, 52). The piston (4) includes two portions (6, 7) releasably mounted (8) one on top of the other and defining therebetween a gasket plane (10) which is perpendicular to the axis (11) of the piston (4) and the cylinder (3), with only one annular groove (4a) passing through the gasket plane (10), and a multiple seal (12) including at least two circumferentially continuous stacked ring seals (51, 52) each defined by two circular rims (51a, 51b, 52a, 52b) is freely horizontally fitted in the groove (4a) between said two portions (6, 7) of the piston. The two seals (51, 52) are at an angle to one another.

Abstract translation: 一种机器（1），包括在所述气缸孔中具有至少一个气缸（3）和至少一个活塞（4）的主体（2），包括至少一个环形凹槽（4a），用于接收环密封件 ）。 活塞（4）包括可拆卸地安装（8）一个在另一个的顶部上的两个部分（6,7），并且在其间限定垂直于活塞（4）的轴线（11）的垫圈平面（10） 气缸（3），仅有一个通过垫圈平面（10）的环形槽（4a）和多个密封件（12），其包括至少两个周向连续的层叠环形密封件（51,52），每个环形密封件由两个圆形边缘 51a，51b，52a，52b）自由地水平地装配在活塞的两个部分（6,7）之间的凹槽（4a）中。 两个密封件（51,52）彼此成角度。

公开(公告)号：WO1994012783A1

公开(公告)日：1994-06-09

申请号：PCT/DE1993000977

申请日：1993-10-12

Applicant: MAHLE GMBH ,  HANNIG, Christoph

Inventor： MAHLE GMBH

IPC: F02F03/10

CPC classification number: F02F3/10 ,  F02B2075/025 ,  F05C2201/021 ,  F05C2201/0433 ,  F05C2201/0448 ,  F05C2203/0882

Abstract: In a piston-cylinder assembly of an internal combustion engine, especially a two-stroke engine, at least the piston-sliding surface of the cylinder is made of an aluminium alloy. Moreover, the basic material of the piston (1) is an alluminium alloy and at least 80 % of its sliding surface is given a sliding coating (3, 4). The sliding coating (3, 4) on the piston (1) is usually metallic and galvanically applied. The aim is to provide an economically producible piston coating with properties at least as good as those of the former galvanically applied coatings. To this end the cylinder sliding surface has a roughness Ra of less than 1 mu m, while the piston sliding surface consist of resin-bound graphite. The piston rings (6) are made of cast iron or steel and have a convex sliding surface.

公开(公告)号：WO1993011353A1

公开(公告)日：1993-06-10

申请号：PCT/US1991008887

申请日：1991-11-29

Applicant: CATERPILLAR INC. ,  BERLINGER, Willibald, Gustav

Inventor： CATERPILLAR INC.

IPC: F02F03/00

CPC classification number: F16J1/16 ,  F02B23/0696 ,  F02F3/0023 ,  F02F3/0069 ,  F02F3/22 ,  F02F2200/04 ,  F05C2201/021 ,  F05C2201/0448 ,  Y02T10/125

Abstract: The design and construction of past piston assemblies having a wrist pin bolted to a connecting rod have excessive weight and structural components, and requires more complex machining techniques and tooling. The present invention overcomes these problems by providing a piston assembly (30) with a wrist pin (36) attached to a piston member (32). Thus, the length of the leg members (80) are short and do not require a portion surrounding the wrist pin (36). The results being reduced piston member (32) and piston assembly (30) weight and lower inertia, a simplified forging or casting process, a more easily machinable cavity (86) within the piston member (32) and a higher quality piston assembly (30).

Abstract translation: 过去的活塞组件的设计和结构，其具有螺栓连接到连杆上的腕销具有过大的重量和结构部件，并且需要更复杂的加工技术和工具。 本发明通过提供具有附接到活塞构件（32）的腕销（36）的活塞组件（30）来克服这些问题。 因此，腿部件（80）的长度较短，并且不需要围绕腕销（36）的部分。 结果是活塞构件（32）和活塞组件（30）的重量和较低的惯性减小，简化的锻造或铸造工艺，活塞构件（32）内更容易加工的空腔（86）和更高质量的活塞组件（30） ）。