公开(公告)号：US09103441B2

公开(公告)日：2015-08-11

申请号：US13345851

申请日：2012-01-09

Applicant: Miguel Azevedo ,  William Zdeblick ,  Kai Wang

Inventor： Miguel Azevedo ,  William Zdeblick ,  Kai Wang

IPC: F16J1/16 ,  F16J1/18 ,  F02F3/18 ,  F16J7/00

CPC classification number: F16J1/18 ,  F02F3/18 ,  F16J1/16 ,  F16J7/00

Abstract: A piston assembly including a piston body pivotally connected to a connecting rod by a wrist pin. The wrist pin includes a sealed cavity therein partially filled with a heat transfer medium. The heat transfer medium may be composed of a fusible alloy. The sealed cavity may be comprised of discrete compartments. The wrist pin may be integrated with the connecting rod and share a conjoined sealed cavity therewith so that heat transfer medium can draw heat effectively away from the piston body.

Abstract translation: 活塞组件，其包括通过腕针枢转地连接到连杆的活塞体。 腕针包括其中部分填充有传热介质的密封空腔。 传热介质可以由易熔合金组成。 密封腔可以由离散的隔室组成。 手腕销可以与连杆一体化并与其共享一个密封的密封空腔，使得传热介质可以有效地将热量吸引到活塞体上。

公开(公告)号：US20150176523A1

公开(公告)日：2015-06-25

申请号：US14415194

申请日：2013-07-18

Applicant: MAHLE International GmbH

Inventor： Sascha-Oliver Boczek ,  Ulrich Bischofberger ,  Rainer Scharp

IPC: F02F3/00 ,  B23P15/10

CPC classification number: F02F3/0092 ,  B23P15/10 ,  F02F3/003 ,  F02F3/18 ,  F02F2003/0061 ,  F05C2201/0448 ,  Y10T29/49252

Abstract: The invention relates to a method for producing a piston (1) for an internal combustion engine, characterised by the following method steps: producing an upper piston part (2) and a lower piston part (3) having one or more recesses (4, 4′) for forming a closed cavity (5); introducing a heat transfer medium (6), in particular one or more alkali metals, that is solid or paste-like at ambient temperature and liquid at the intended operating temperature of the piston, into the recesses (4, 4′) of the lower piston part (3) and/or of the upper piston part (2), wherein the heat transfer medium (6) is provided in order, during the operative state of the piston (1), to effect heat transport within the piston (1) by convection; closing the recesses to form the closed cavity (5) which encloses the heat transfer medium (6); and connecting the upper piston part (2) to the lower piston part (3). This enables the piston (1) to be produced in a simplified manner.

Abstract translation: 本发明涉及一种用于制造内燃机的活塞（1）的方法，其特征在于以下方法步骤：制造具有一个或多个凹部（4，4）的上活塞部分（2）和下活塞部分（3） 4'），用于形成闭合腔（5）; 将环境温度为固体或糊状的活性物质的传热介质（6）特别是一种或多种碱金属引入到活塞的预期操作温度下的下部（4,4'）中， 活塞部分（3）和/或上活塞部分（2），其中传热介质（6）在活塞（1）的操作状态期间依次设置，以在活塞（1）内实现热传递 ）通过对流; 闭合凹部以形成封闭传热介质（6）的封闭空腔（5）。 并将上活塞部件（2）连接到下活塞部件（3）。 这使得能够以简化的方式制造活塞（1）。

公开(公告)号：US20150090215A1

公开(公告)日：2015-04-02

申请号：US14395237

申请日：2013-04-15

Applicant: Mahle International GmbH

Inventor： Sascha-Oliver Boczek

IPC: F02F3/20

CPC classification number: F02F3/20 ,  F02F3/18

Abstract: A piston for an internal combustion engine may include an encircling ring section in a region of a piston crown. The piston may include a convection region, which has at least one cavity containing a heat transfer medium for dissipation of heat from the piston crown to an underside of the piston. The piston may include a heat insulating region, which is arranged between the ring section and the convection region and thermally insulates the ring section.

Abstract translation: 用于内燃机的活塞可以包括在活塞冠的区域中的环绕环部分。 活塞可以包括对流区域，其具有至少一个包含传热介质的空腔，用于将热量从活塞冠向活塞的下侧散热。 活塞可以包括隔热区域，其布置在环部分和对流区域之间并使环部分热绝缘。

公开(公告)号：US08955486B2

公开(公告)日：2015-02-17

申请号：US13370609

申请日：2012-02-10

Applicant: Miguel Azevedo ,  Warran Boyd Lineton ,  Keith Hampton

Inventor： Miguel Azevedo ,  Warran Boyd Lineton ,  Keith Hampton

IPC: F02F3/26

CPC classification number: F02F3/18

Abstract: A piston for an internal combustion engine has a body including an upper combustion wall having an upper combustion surface; cylindrical outer wall with a ring belt region adjacent the upper combustion surface, and a closed annular cooling gallery located in radial alignment with the ring belt region. A cooling medium is contained in the cooling gallery. The cooling gallery has an inner surface including a radially outermost portion extending along the ring belt region. The outermost portion converges from the upper combustion wall toward a longitudinal central axis. During reciprocating motion of the piston, the cooling medium flows and remains in contact with the cooling gallery walls, thereby maximizing the capacity for heat to be transferred from the upper combustion wall to the contained cooling medium and from the cooling medium to the piston body, ring belt region and ultimately to the engine cooling system.

Abstract translation: 一种用于内燃机的活塞具有包括具有上燃烧表面的上燃烧壁的主体; 具有邻近上燃烧表面的环带区域的圆柱形外壁和与环带区域径向对准的闭合环形冷却槽。 冷却介质包含冷却介质。 冷却库具有包括沿着环带区域延伸的径向最外侧部分的内表面。 最外面的部分从上燃烧壁向纵向中心轴收敛。 在活塞的往复运动期间，冷却介质流动并保持与冷却壁壁接触，从而使得热量从上燃烧壁传递到所容纳的冷却介质和从冷却介质传递到活塞体的能力最大化， 环带区域，最终到发动机冷却系统。

公开(公告)号：US20130062218A1

公开(公告)日：2013-03-14

申请号：US13697415

申请日：2011-02-12

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

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

IPC: B23H9/14 ,  B23H3/00 ,  C25F7/00

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.

公开(公告)号：US07549368B2

公开(公告)日：2009-06-23

申请号：US11659985

申请日：2005-08-10

Applicant: Peter Heidrich ,  Roland Lochmann ,  Klaus Keller

Inventor： Peter Heidrich ,  Roland Lochmann ,  Klaus Keller

IPC: F01B31/08 ,  F01P1/04

CPC classification number: F02F3/18

Abstract: The invention relates to a lightweight piston comprising heat pipes. The aim of the invention is to simplify the structure of such a piston while at the same time allowing for an improved heat dissipation from the piston areas subject to heat load while avoiding thermal stress. For this purpose, a plurality of liquid-filled heat pipes each having an evaporator and a condenser end is used, whereby the evaporator end is configured by short pipe sections that are oriented in the thickness at bottom towards the focal point and that are interlinked by means of a composite heat pipe extending in parallel to the piston head. At least two pipe sections functioning as the condenser end are coupled with the composite heat pipe in such a manner as to configure, by way of a pipe connection arranged on the condenser ends, a closed coolant cycle between the evaporator end, composite heat pipe and condenser end of the heat pipe.

Abstract translation: 本发明涉及一种包括热管的轻型活塞。 本发明的目的是简化这种活塞的结构，同时允许来自承受热负荷的活塞区域的改善的散热，同时避免热应力。 为此，使用多个具有蒸发器和冷凝器端的充满液体的热管，由此蒸发器端部由短管段构成，该管道部分在底部的厚度方向朝向焦点并且相互连接 与活塞头平行延伸的复合热管的装置。 用作冷凝器端的至少两个管段与复合热管联接，以便通过布置在冷凝器端部上的管道连接来构造在蒸发器端部，复合热管和 冷凝器末端的热管。

公开(公告)号：US20070251487A1

公开(公告)日：2007-11-01

申请号：US11659986

申请日：2005-08-10

Applicant: Peter Heidrich ,  Roland Lochmann ,  Timo Estrum

Inventor： Peter Heidrich ,  Roland Lochmann ,  Timo Estrum

IPC: F02F3/16

CPC classification number: F02F3/18 ,  F01P2003/2278 ,  F02F3/22 ,  F05C2251/048

Abstract: The invention relates to a cooling duct piston for an internal combustion engine comprising heat pipes. In order to improve dissipation of heat from the thermally loaded piston areas while preventing thermal tensions, liquid-filled heat pipes that are provided with an evaporator end and a condenser end are disposed in bores of the cooling duct which are oriented towards the bottom of the piston. The heat pipes are arranged such that the evaporator ends terminate at the end of the bores which faces the piston bottom while the condenser ends terminate in the closed cooling duct.

Abstract translation: 本发明涉及一种包括热管的用于内燃机的冷却管道活塞。 为了改善来自热负荷活塞区域的热耗散，同时防止热张力，设置有蒸发器端部和冷凝器端部的液体填充的热管设置在冷却管道的孔中，该管道朝向 活塞。 热管被布置成使得蒸发器端部终止于与冷却器端部终止于封闭冷却管道的面对活塞底部的孔的端部。

公开(公告)号：US06904876B1

公开(公告)日：2005-06-14

申请号：US10880062

申请日：2004-06-28

Applicant: Peter Hofbauer ,  Adrain Tusinean

Inventor： Peter Hofbauer ,  Adrain Tusinean

IPC: F01P1/04 ,  F02B71/04 ,  F02F3/18

CPC classification number: F02F3/18 ,  F02B71/04

Abstract: A free piston engine is configured with a pair of opposed engine cylinders located on opposite sides of a fluid pumping assembly. An inner piston assembly includes a pair of inner pistons, one each operatively located in a respective one of the engine cylinders, with a push rod connected between the inner pistons. The push rod extends through an inner pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. An outer piston assembly includes a pair of outer pistons, one each operatively located in a respective one of the engine cylinders, with at least one pull rod connected between the outer pistons. The pull rod extends through an outer pumping chamber in the fluid pumping assembly and forms a fluid plunger within this chamber. The movement of the inner and outer piston assemblies during engine operation will cause the fluid plungers to pump fluid from a low pressure container into a high pressure chamber as a means of storing the energy output from the engine. Alternatively, the piston assemblies may drive a linear alternator. At least one of the pistons includes one or more generally axially extending bores partially filled with a sodium compound. As the piston reciprocates, the sodium moves back and forth in each cooling bore, thereby better distributing heat in the piston.

Abstract translation: 自由活塞发动机配置有位于流体泵送组件的相对侧上的一对相对的发动机气缸。 内部活塞组件包括一对内部活塞，每个内部活塞各自操作地位于相应的一个发动机气缸中，并且连杆在内部活塞之间。 推杆延伸穿过流体泵送组件中的内部泵送室，并在该室内形成流体柱塞。 外部活塞组件包括一对外部活塞，每个外部活塞各自操作地位于相应的一个发动机气缸中，其中至少一个拉杆连接在外部活塞之间。 拉杆延伸穿过流体泵送组件中的外部泵送室，并在该腔室内形成流体柱塞。 内部和外部活塞组件在发动机运行期间的移动将导致流体柱塞将流体从低压容器泵送到高压室中，作为存储来自发动机的能量输出的装置。 或者，活塞组件可以驱动线性交流发电机。 活塞中的至少一个包括部分地填充有钠化合物的一个或多个通常轴向延伸的孔。 当活塞往复运动时，钠在每个冷却孔中前后移动，从而更好地在活塞中分配热量。

公开(公告)号：US20040045515A1

公开(公告)日：2004-03-11

申请号：US10451234

申请日：2003-10-08

Inventor： Ulrich Bischofberger ,  Joachim Schulz

IPC: F01P001/04

CPC classification number: F02F3/0092 ,  F02B3/06 ,  F02B23/0603 ,  F02B23/0672 ,  F02B2023/0612 ,  F02B2275/14 ,  F02F3/0069 ,  F02F3/18 ,  F02F2200/04 ,  F05C2201/0448 ,  Y02T10/123 ,  Y02T10/125

Abstract: The aim of the invention is to obtain, with constant or increasing output, a reduction in the compression height of a cooling duct piston (1) for a direct-injection diesel engine. To this end, the piston (1) is composed of at least two parts (23) that are soldered together. One of the parts is a piston base body (2), which is forged of steel and which is provided with a shaft (8), hubs (6) and with an annular part (9). The other part, which is made of steel or of a nickel-based material, contains a combustion recess (4) and at least a portion of the piston head (5). The piston base body (2) and the second part (3), together, form a cooling duct (11) that can be filled with oil.

Abstract translation: 本发明的目的是通过恒定或增加的输出获得直喷式柴油发动机的冷却管活塞（1）的压缩高度的降低。 为此，活塞（1）由焊接在一起的至少两个部分（23）组成。 其中一个部件是活塞基体（2），其被锻造为钢，并且设有轴（8），轮毂（6）和环形部分（9）。 由钢或镍基材料制成的另一部分包含燃烧凹部（4）和活塞头（5）的至少一部分。 活塞基体（2）和第二部分（3）一起形成可以填充油的冷却管道（11）。

公开(公告)号：US5394788A

公开(公告)日：1995-03-07

申请号：US191012

申请日：1994-02-01

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。