公开(公告)号：US20150224589A1

公开(公告)日：2015-08-13

申请号：US14622086

申请日：2015-02-13

Applicant: Janssen Albert Michael ,  Gniesmer Volker ,  Karl Diffenbach ,  Gerhard Luz

Inventor： Janssen Albert Michael ,  Gniesmer Volker ,  Karl Diffenbach ,  Gerhard Luz

IPC: B23H3/10 ,  F02F3/18 ,  F02F3/00 ,  B23P15/10

CPC classification number: B23H3/10 ,  B23H9/00 ,  B23H9/006 ,  B23H9/14 ,  B23P15/10 ,  F02F3/003 ,  F02F3/18 ,  Y10T29/49275 ,  Y10T29/49277

Abstract: A method for processing a constructed, liquid-cooled piston of an internal combustion engine, the piston including an upper piston part and a lower piston part, which are supported by a joining plane and are connected to each other in a bonded manner. An electrochemical method, such as electrochemical machining, is used to produce a passage opening or a hole in the piston. By means of the method, material is selectively removed after the completion of the upper part piston, the lower piston part, or the piston after the two piston parts have been joined. The electrochemical machining allows an arbitrarily geometrically designed topography having at least one passage opening, a hollow, or an oil pocket in cooling areas or non-cooling areas to be created on the piston.

Abstract translation: 一种用于处理内燃机的构造的液冷活塞的方法，所述活塞包括上活塞部和下活塞部，所述上活塞部和下活塞部由接合面支撑并且以接合方式彼此连接。 使用诸如电化学加工的电化学方法来在活塞中产生通道开口或孔。 通过该方法，在两个活塞部件已经接合之后，在完成上部活塞，下部活塞部件或活塞之后，材料被选择性地去除。 电化学加工允许在活塞上产生冷却区域或非冷却区域中的至少一个通道开口，中空或油口的任意几何设计的形貌。

公开(公告)号：US20150128892A1

公开(公告)日：2015-05-14

申请号：US14398784

申请日：2013-05-03

Applicant: MAHLE International GmbH

Inventor： Ulrich Bischofberger

IPC: F02F3/20 ,  F01P3/10 ,  F02F3/26

CPC classification number: F02F3/20 ,  F01P3/10 ,  F02B3/06 ,  F02F3/00 ,  F02F3/18 ,  F02F3/22 ,  F02F3/26 ,  F05C2201/021 ,  F05C2201/0448

Abstract: The invention relates to a piston for an internal combustion engine, comprising a piston head and a piston skirt, the piston head having a peripheral annular part and in the region of the annular part, a peripheral cooling channel. The piston skirt comprises piston bores provided with hub bores, which are arranged over the hub connections on the underside of the piston head. The piston hubs are interconnected over the running surfaces. According to the invention, the wall of the cooling channel which extends in the region of the annular part comprises an inclined portion and together with the central axis of the piston (M), forms an acute angle (a). At least one bore which is closed towards the outside is arranged between a running surface and a hub bore such that the at least one bore leads into the cooling channel, and that the cooling channel and the at least one bore contain a coolant in the form of a metal or a metal alloy which have a low-melting point.

Abstract translation: 本发明涉及一种用于内燃机的活塞，其包括活塞头和活塞裙，所述活塞头具有外围环形部分，并且在所述环形部分的区域中是周边冷却通道。 活塞裙部包括设置有轮毂孔的活塞孔，其布置在活塞头的下侧上的轮毂连接件的上方。 活塞毂在运行表面上相互连接。 根据本发明，在环形部分的区域中延伸的冷却通道的壁包括倾斜部分并与活塞（M）的中心轴线一起形成锐角（a）。 至少一个朝向外部封闭的孔布置在运行表面和轮毂孔之间，使得至少一个孔进入冷却通道，并且冷却通道和至少一个孔包含形式的冷却剂 具有低熔点的金属或金属合金。

公开(公告)号：US08899208B2

公开(公告)日：2014-12-02

申请号：US13995017

申请日：2011-12-15

Applicant: Ulrich Bischofberger

Inventor： Ulrich Bischofberger

IPC: F02F3/18 ,  F02F3/22 ,  F01P1/04

CPC classification number: F02F3/18 ,  F01P1/04 ,  F02F3/22

Abstract: The present invention relates to a piston (10) for an internal combustion engine, comprising a piston head (11) and a piston skirt (16), wherein the piston head (11) has a circumferential ring part (15) and a circumferential cooling channel (23) in the region of the ring part (15), wherein the piston skirt (16) has piston bosses (17), which are provided with boss bores (18) and which are arranged on the underside (11a) of the piston head (11) by means of boss connections (19), wherein the piston bosses (17) are connected to each other by means of running surfaces (21, 22). According to the invention, at least one axial bore (24a, 24b, 24c, 24d), which is closed to the outside and which is arranged between a running surface (21, 22) and a boss bore (18), is provided inside a piston boss (17), the at least one bore (24a, 24b, 24c, 24d) opens into the cooling channel (23), and the cooling channel (23) and the at least one bore (24a, 24b, 24c, 24d) contain a filling (27) of sodium and/or potassium.

Abstract translation: 本发明涉及一种用于内燃机的活塞（10），其包括活塞头（11）和活塞裙（16），其中活塞头（11）具有圆周环部分（15）和周向冷却 在所述环形部分（15）的区域中的所述通道（23），其中所述活塞裙部（16）具有活塞凸起（17），所述活塞凸起（17）设置有凸起孔（18） 活塞头（11）通过凸台连接件（19）连接，其中活塞凸台（17）通过运行表面（21,22）相互连接。 根据本发明，在外部设置有至少一个轴向孔（24a，24b，24c，24d），该轴向孔（24a，24b，24c，24d）设置在行进表面（21,22）和凸台孔（18）之间， 活塞凸台（17），所述至少一个孔（24a，24b，24c，24d）通向所述冷却通道（23），所述冷却通道（23）和所述至少一个孔（24a，24b，24c， 24d）含有钠和/或钾的填充物（27）。

公开(公告)号：US20140216246A1

公开(公告)日：2014-08-07

申请号：US14124899

申请日：2012-06-06

Applicant: Franz Laimboeck

Inventor： Franz Laimboeck

IPC: F16J1/00

CPC classification number: F16J1/005 ,  F02F3/0092 ,  F02F3/105 ,  F02F3/12 ,  F02F3/18 ,  F02F2003/0061 ,  F16J1/09

Abstract: A piston has a piston crown, a piston pin support that extends from the piston crown, and a skirt wall that is connected to the piston crown. The skirt wall has two tubular pieces which are concentrically arranged relative to each other and each of which is connected to the piston crown in the circumferential region of the piston crown. A hollow space cavity is formed between the tubular pieces and a coolant is disposed in the cavity.

Abstract translation: 活塞具有活塞冠，从活塞顶部延伸的活塞销支撑件和连接到活塞顶盖的裙壁。 裙壁具有两个管状件，这两个管状件相对于彼此同心地布置，并且每个管状件在活塞顶部的周向区域中连接到活塞顶部。 在管状件之间形成中空空腔，并且在空腔中设置冷却剂。

公开(公告)号：US20130055969A1

公开(公告)日：2013-03-07

申请号：US13582129

申请日：2011-03-02

Applicant: Detlef Jacobi

Inventor： Detlef Jacobi

IPC: F01P1/04

CPC classification number: F02F3/18 ,  F02F3/003 ,  F02F3/20

Abstract: The present invention relates to a piston (10, 110, 210) for an internal combustion engine, comprising a piston crown (13), a circumferential ring part (16), a circumferential cooling channel (27) arranged in the vicinity of the ring part (16), boss supports (21) connected below the piston crown (13), piston bosses (18) connected thereto, and a piston skirt (17). According to the invention, a cavity (28) closed on all sides and having a closure element (29, 129, 229) arranged in the direction of the piston skirt (17) is provided below the piston crown (13).

Abstract translation: 本发明涉及一种用于内燃机的活塞（10,110,210），其包括活塞冠（13），周向环部分（16），周向冷却通道（27），其布置在环的附近 部分（16），连接在活塞顶部（13）下方的凸台支撑件（21），与其连接的活塞凸台（18）和活塞裙部（17）。 根据本发明，在活塞顶部（13）的下方设置有沿着活塞裙（17）的方向设置的在所有侧面上封闭并具有闭合元件（29,129,209）的空腔（28）。

公开(公告)号：US5454351A

公开(公告)日：1995-10-03

申请号：US221500

申请日：1994-04-01

Applicant: Yiding Cao ,  Qian Wang

Inventor： Yiding Cao ,  Qian Wang

IPC: F02B1/04 ,  F02F3/18

CPC classification number: F28D15/0208 ,  F02F3/18 ,  F28D15/0275 ,  F02B1/04 ,  F05C2201/021

Abstract: Described herein is an engine piston that incorporates reciprocating heat pipes for temperature reduction in the upper section of the piston. The reciprocating heat pipes are arranged circumferentially, close to the piston ring grooves, and extend from the region of the top ring groove to the piston skirt region. Since the reciprocating heat pipe has a very high thermal conductance, excessive heat in the top ring groove region can be transferred to the heat pipe section corresponding to the piston skirt region, where accessibility to the cooling oil is much greater, and heat can be dissipated via oil splash/mist or jet impingement cooling. Also, the heat dissipation area in contact with the cooling oil is significantly increased. As a result, the temperature in the upper section of the piston can be considerably decreased. The temperature reduction in the upper section of the piston, including the top ring groove region, would significantly improve engine thermal efficiency and performance of the piston assembly.

Abstract translation: 这里描述的是一种发动机活塞，其包括用于在活塞的上部中降温的往复式热管。 往复式热管周向地布置，靠近活塞环槽，并且从顶环槽的区域延伸到活塞裙部区域。 由于往复式热管具有非常高的导热性，所以顶环槽区域中的过热可以转移到对应于活塞裙部区域的热管部分，其中冷却油的可接近性大得多，并且散热能量 通过油溅/喷雾或喷射冲击冷却。 此外，与冷却油接触的散热面积显着增加。 结果，活塞上部的温度可以大大降低。 包括顶环槽区域在内的活塞上段的温度降低将显着提高发动机的热效率和活塞组件的性能。

公开(公告)号：US5339775A

公开(公告)日：1994-08-23

申请号：US176928

申请日：1994-01-03

Applicant: John M. Clarke ,  Padmanabhan R. Ranganathan

Inventor： John M. Clarke ,  Padmanabhan R. Ranganathan

IPC: F01P3/10 ,  F02B75/28 ,  F02F1/10 ,  F02F3/18 ,  F07P1/04

CPC classification number: F02B75/28 ,  F02F3/18

Abstract: Conventional cooling arrangements for the piston assemblies mounted within an engine block include the use of coolant that is circulated through the engine block. Generally, a plurality of cavities or water jackets are positioned in areas of high heat production within the engine block and the coolant is circulated between them and a radiator dissipate the heat created through engine operation. This method of cooling however requires the engine block to be stationary with respect to the pistons that reciprocated within to facilitate the circulation of the coolant within the block. The present invention provides a cooling arrangement for a first piston member that reciprocates within an engine block and in turn mounts at least one second piston member therewithin. The first piston member includes a sealed cavity that is positioned about a bore in which the second piston member is mounted for reciprocation. The cavity contains a cooling agent that dissipates the heat created within the first piston member as it reciprocates within the engine block.

Abstract translation: 安装在发动机缸体内的活塞组件的常规冷却装置包括使用通过发动机缸体循环的冷却剂。 通常，多个空腔或水套被定位在发动机缸体内的高发热区域中，并且冷却剂在它们之间循环并且散热器耗散通过发动机运转产生的热量。 然而，这种冷却方法要求发动机缸体相对于往复运动的活塞是静止的，以便于冷却剂在块内的循环。 本发明提供了一种用于第一活塞构件的冷却装置，该第一活塞构件在发动机缸体内往复运动，并在其中安装至少一个第二活塞构件。 第一活塞构件包括密封空腔，其围绕第二活塞构件安装用于往复运动的孔定位。 空腔包含冷却剂，其在第一活塞构件内产生的热量在其在发动机缸体内往复运动时消散。

公开(公告)号：US5309818A

公开(公告)日：1994-05-10

申请号：US3841

申请日：1993-01-11

Applicant: Jose A. C. Mendes ,  Jose M. M. Leites ,  Andre Lippai

Inventor： Jose A. C. Mendes ,  Jose M. M. Leites ,  Andre Lippai

IPC: B23P15/10 ,  F02F3/00 ,  F02F3/18 ,  F02F3/22 ,  F16J1/00 ,  F01B31/08

CPC classification number: B23P15/10 ,  F02F3/003 ,  F02F3/0069 ,  F02F3/18 ,  F02F3/22 ,  F16J1/001 ,  F02F2003/0061 ,  F02F2200/04 ,  F05C2201/0448 ,  Y10T29/49252 ,  Y10T29/49258

Abstract: A cooled piston head and method of manufacture, the piston head having a closed cooling chamber. In one embodiment, the piston head is formed of a top member, an intermediate member and a pin boss member joined to each other preferably by welding; the top and intermediate members are provided with circumferential grooves which defines the closed cooling chamber. In an alternate embodiment, the head is formed of a top member and a pin boss member joined together preferably by welding; the closed cooling chamber is defined by circumferential grooves provided on both members.

Abstract translation: 冷却的活塞头和制造方法，活塞头具有封闭的冷却室。 在一个实施例中，活塞头由优选通过焊接彼此连接的顶部构件，中间构件和销毂构件形成; 顶部和中间构件设置有限定封闭冷却室的圆周凹槽。 在替代实施例中，头部由优选通过焊接连接在一起的顶部构件和销毂构件形成; 封闭的冷却室由设置在两个构件上的圆周槽限定。

公开(公告)号：US3628511A

公开(公告)日：1971-12-21

申请号：US3628511D

申请日：1970-01-05

Applicant: MASCH FABRIK AUGSBURG NURNBERG

Inventor： FISCHER HANS

IPC: F02B3/06 ,  F02F3/00 ,  F02F3/14 ,  F02F3/18 ,  F02F3/22 ,  F01P1/04 ,  F01B31/08

CPC classification number: F02F3/14 ,  F02B3/06 ,  F02B2275/14 ,  F02F3/003 ,  F02F3/18 ,  F02F3/22 ,  F02F2003/0061 ,  F05C2201/0448 ,  Y02T10/123

Abstract: A piston of the type including a pistonhead having a combustion chamber in its upper face and piston ring receiving grooves about its periphery. The pistonhead is machined with a concentric element on its underside adapted to engage a concentric element on a wrist pin bearing frame on which partial skirts or slipper elements are mounted to distribute the transverse thrust of the piston against the cylinder wall. The combustion chamber is surrounded by a shell element through which the on concentric element extends and to which it is sealed, preferably by welding. The upper portion of the shell extends upwardly spaced from the wall of the combustion chamber to provide a cooling space to receive a meltable first coolant, and a second annular shell element, or border member, may be mounted between the inner wall of the ring supporting periphery of the pistonhead below the piston ring grooves and the outer wall of the shell element, to form a chamber for a second coolant which may be the engine lubricant.

公开(公告)号：US3385175A

公开(公告)日：1968-05-28

申请号：US58508766

申请日：1966-10-07

Applicant: MAHLE KG

Inventor： ALFRED MEIER ,  RUDOLF MAIER

IPC: F02B3/06 ,  F02F3/00 ,  F02F3/18 ,  F02F3/28

CPC classification number: F02F3/18 ,  F02B3/06 ,  F02F3/0023 ,  F02F3/28 ,  F05C2201/0448