公开(公告)号：US08869768B2

公开(公告)日：2014-10-28

申请号：US14013349

申请日：2013-08-29

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo

IPC: F02F3/22

CPC classification number: F01P3/06 ,  F02F3/22 ,  F02F3/225

Abstract: A piston for an internal combustion engine including a piston body (20). The piston body (20) defines a first cooling chamber (46) that is sealed closed and contains a first cooling medium (48) other than air. During operation of the piston, the first cooling medium (48) extracts heat from the surrounding regions of the piston body (20) to cool the piston body (20). The piston body (20) also defines a second cooling chamber (50) adjacent to the first cooling chamber (46). A cooling oil (51) is projected into the second cooling chamber (50) and against the portion of the piston body (20) separating the first and second cooling chambers (46, 50) to extract heat from the first cooling medium (48). The cooling oil (51) is redirected within the second cooling chamber (50) to extract additional heat from the first cooling medium (48) or directly from the piston body (20).

Abstract translation: 一种用于内燃机的活塞，包括活塞体（20）。 活塞体（20）限定密闭的第一冷却室（46），并且包含除空气以外的第一冷却介质（48）。 在活塞运行期间，第一冷却介质（48）从活塞体（20）的周围区域提取热量以冷却活塞体（20）。 活塞体（20）还限定与第一冷却室（46）相邻的第二冷却室（50）。 冷却油（51）突出到第二冷却室（50）中并且抵靠分离第一和第二冷却室（46,50）的活塞体（20）的部分以从第一冷却介质（48）提取热量， 。 冷却油（51）在第二冷却室（50）内重新定向，以从第一冷却介质（48）或直接从活塞体（20）提取额外的热量。

公开(公告)号：US20140265148A1

公开(公告)日：2014-09-18

申请号：US13827255

申请日：2013-03-14

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Gregory Salenbien ,  Miguel Azevedo ,  Matthew Belford

IPC: F16J9/02 ,  B23P15/06

CPC classification number: F16J9/02 ,  B23P15/06 ,  B23P15/065 ,  F16J9/14 ,  Y10T29/49284

Abstract: The invention provides a low tension piston ring having a finished outer diameter and negligible tangential tension. The method includes the steps of machining a stock bar to an initial outer diameter slightly greater than the finished outer diameter of the piston ring, finishing the initial outer diameter of the stock bar to a rounded profile having a nominal diameter equal to the finished outer diameter, and machining the stock bar to the preferred cross-section. Dykes-type piston rings can have keystone or semi-keystone shaped cross-sections. The method continues by detaching the piston ring from the stock bar using a parting tool in response to completing all tension inducing operations including the steps recited above. The method continues with the steps of lapping the piston ring to a final longitudinal thickness and cutting the piston ring longitudinally to form a final gap.

Abstract translation: 本发明提供了具有最终外径和可忽略切向张力的低拉力活塞环。 该方法包括以下步骤：将坯料坯加工到初始外径略大于活塞环的最终外径，将坯条的初始外径完成为具有等于最终外径的公称直径的圆形轮廓 ，并将坯料加工到优选的横截面。 Dykes型活塞环可以具有梯形或半梯形截面。 响应于完成包括上述步骤的所有张力诱导操作，使用分型工具将活塞环从坯料棒分离出来。 该方法继续以将活塞环研磨至最终纵向厚度并纵向切割活塞环以形成最终间隙的步骤。

公开(公告)号：US10202936B2

公开(公告)日：2019-02-12

申请号：US14682649

申请日：2015-04-09

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Miguel Azevedo

IPC: F02F3/00 ,  F02F3/18 ,  C23C4/134 ,  B22D19/00 ,  B23K31/02 ,  B23P15/10 ,  F02F3/22

Abstract: A steel piston for heavy-duty diesel engines designed with features that increase adiabaticity, reduce weight, and improve passive cooling without loss of power density is provided. The piston includes a pair of skirt walls extending longitudinally from a crown to a lower end. The skirt walls include a plurality of heat sink wells extending axially from the crown to a lower end of the skirt wall. Each heat sink well is at least partially filled with a cooling medium and is sealed. The piston also includes a plurality of ribs each radially aligned with one of the heat sink wells and extending inwardly and upwardly from a first rib end at an inner surface of the skirt wall to a second rib end at the inner surface of the crown.

公开(公告)号：US10065276B2

公开(公告)日：2018-09-04

申请号：US14817385

申请日：2015-08-04

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Miguel Azevedo ,  Michael Weinenger

IPC: F02F3/00 ,  B23P15/08 ,  F02F3/16 ,  F16J1/16 ,  F16J1/00 ,  F16J1/09 ,  F16J7/00

Abstract: A piston assembly and method of construction thereof for an internal combustion engine are provided. The assembly includes a piston head having an upper combustion wall with an undercrown surface and a ring belt region. The piston head has a floor with an upper surface and a bottom surface. The floor is spaced beneath the upper combustion wall in radial alignment with the ring belt region. A substantially enclosed, annular cooling gallery is bounded by the undercrown surface and the floor. A pair of pin bores depends directly from the floor of the cooling gallery. The assembly further includes a pin having ends configured for oscillating receipt in the pin bores. A pin bearing surface extends within the pin bores and between the pin bores in the lower surface of the floor. The assembly includes a connecting rod with an end fixed to the pin for conjoint oscillation therewith.

公开(公告)号：US20170122248A1

公开(公告)日：2017-05-04

申请号：US14928870

申请日：2015-10-30

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo ,  Gregory Salenbien ,  Matthew Belford

IPC: F02F3/00 ,  F16J9/12

CPC classification number: F02F3/0015 ,  F16J9/062 ,  F16J9/12 ,  F16J9/206

Abstract: A piston for an internal combustion engine having an improved oil control ring is provided. The piston has a piston body providing an upper combustion surface and an annular outer wall depending therefrom. A ring belt region including a plurality of ring grooves is formed in the annular outer wall. A first compression ring is disposed in one of the ring grooves and the oil control ring is disposed in another of the ring grooves. The oil control ring has generally parallel, planar upper and lower surfaces, with the upper and lower surfaces having an annular groove recessed therein. A through opening can be formed to bring the annular grooves into fluid communication with one another. The annular grooves collect oil scraped from a cylinder wall and return oil to the crank sump and reduce the contact area between the oil control ring and the wall of the ring groove.

公开(公告)号：US20160298572A1

公开(公告)日：2016-10-13

申请号：US14682649

申请日：2015-04-09

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Miguel Azevedo

IPC: F02F3/00 ,  C23C4/134 ,  B22D19/00 ,  B23K31/02 ,  F02F3/22 ,  B23P15/10

CPC classification number: F02F3/0092 ,  B22D19/0027 ,  B23K31/02 ,  B23P15/10 ,  C23C4/134 ,  F02F3/0015 ,  F02F3/0076 ,  F02F3/18 ,  F02F3/22

Abstract: A steel piston for heavy-duty diesel engines designed with features that increase adiabaticity, reduce weight, and improve passive cooling without loss of power density is provided. The piston includes a pair of skirt walls extending longitudinally from a crown to a lower end. The skirt walls include a plurality of heat sink wells extending axially from the crown to a lower end of the skirt wall. Each heat sink well is at least partially filled with a cooling medium and is sealed. The piston also includes a plurality of ribs each radially aligned with one of the heat sink wells and extending inwardly and upwardly from a first rib end at an inner surface of the skirt wall to a second rib end at the inner surface of the crown.

Abstract translation: 提供了一种用于重型柴油发动机的钢活塞，其设计具有增加绝热性，减轻重量并改善被动冷却而不损失功率密度的特征。 活塞包括从冠部向下端纵向延伸的一对裙壁。 裙壁包括从冠部轴向延伸到裙壁的下端的多个散热孔。 每个散热器阱至少部分地填充有冷却介质并被密封。 活塞还包括多个肋，每个肋与散热器阱中的一个径向对准，并且在裙壁的内表面处的第一肋端向内和向上延伸到冠部的内表面处的第二肋端。

公开(公告)号：US20160186686A1

公开(公告)日：2016-06-30

申请号：US14981319

申请日：2015-12-28

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo ,  Michael Weinenger

IPC: F02F3/22 ,  F16C7/02 ,  F02F3/00 ,  F02F3/26

CPC classification number: F02F3/22 ,  F02F3/003 ,  F02F3/18 ,  F02F3/26 ,  F02F2003/0007 ,  F02F2003/0061 ,  F16C7/023 ,  F16J1/08 ,  F16J1/09 ,  F16J1/14

Abstract: A piston assembly, piston therefor and methods of construction are provided. The assembly includes a piston head and connecting rod operably coupled thereto via a wrist pin. The piston head has an upper crown with a combustion bowl and an undercrown surface. The lower crown includes axially aligned pin bores receiving the wrist pin. An upper wall of the lower crown has an oil inlet, an oil outlet and a concave, saddle bearing surface that bears against the wrist pin. A toroid-shaped outer cooling gallery is formed between wall portions of the upper and lower crowns, wherein the outer cooling gallery surrounds an inner cooling gallery. The connecting rod is fixed to the wrist pin for conjoint oscillation. The connecting rod has an oil passage in fluid communication with a through hole in the wrist pin to allow oil to flow therethrough into the inner cooling gallery via the oil inlet.

Abstract translation: 提供一种活塞组件，活塞及其结构方法。 组件包括经由腕销可操作地连接到其上的活塞头和连杆。 活塞头具有具有燃烧碗和下凸表面的上冠。 下冠包括轴向对齐的销孔，其接收腕针。 下冠的上壁具有一个油入口，一个出油口和一个支撑在腕针上的凹面的马鞍轴承表面。 在上冠和下冠的壁部之间形成环形外部冷却廊，其中外部冷却廊围绕内部冷却廊。 连杆固定在腕针上，用于共振。 连杆具有与腕针中的通孔流体连通的油通道，以允许油通过进油口流入内冷却槽。

公开(公告)号：US09127618B2

公开(公告)日：2015-09-08

申请号：US14040259

申请日：2013-09-27

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo ,  Michael Weinenger

IPC: F02F3/00 ,  F02F3/16 ,  F16J1/16 ,  F16J1/00 ,  F16J1/09 ,  F16J7/00

CPC classification number: B23P15/08 ,  F02F3/00 ,  F02F3/0069 ,  F02F3/16 ,  F02F2200/00 ,  F16J1/005 ,  F16J1/09 ,  F16J1/16 ,  F16J7/00 ,  Y10T29/49249 ,  Y10T29/49268

Abstract: A piston assembly and method of construction thereof for an internal combustion engine are provided. The assembly includes a piston head having an upper combustion wall with an undercrown surface and a ring belt region. The piston head has a floor with an upper surface and a bottom surface. The floor is spaced beneath the upper combustion wall in radial alignment with the ring belt region. A substantially enclosed, annular cooling gallery is bounded by the undercrown surface and the floor. A pair of pin bores depends directly from the floor of the cooling gallery. The assembly further includes a pin having ends configured for oscillating receipt in the pin bores. A pin bearing surface extends within the pin bores and between the pin bores in the lower surface of the floor. The assembly includes a connecting rod with an end fixed to the pin for conjoint oscillation therewith.

Abstract translation: 提供一种用于内燃机的活塞组件及其构造方法。 该组件包括具有具有下凸表面和环带区域的上燃烧壁的活塞头。 活塞头具有具有上表面和底表面的底板。 地板在上燃烧壁下方与环带区域径向对准。 一个基本封闭的环形冷却廊由底下的表面和地板界定。 一对销孔直接从冷却库的地板上取下。 组件还包括具有构造成用于在销孔中摆动收据的端部的销。 销轴承表面在销孔内部延伸并且在底板的下表面中的销孔之间延伸。 该组件包括连接杆，其端部固定到销上以与其一起振动。

公开(公告)号：US09062768B2

公开(公告)日：2015-06-23

申请号：US13946866

申请日：2013-07-19

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo ,  Keith Hampton

IPC: F01P3/10 ,  F16J1/09 ,  F02F3/22 ,  F16J9/22 ,  F16J9/06

CPC classification number: F16J1/09 ,  F02F3/22 ,  F16J9/062 ,  F16J9/22 ,  Y10T29/49265

Abstract: A piston for an internal combustion engine and method of construction thereof are provided. The piston includes a piston body having an upper combustion surface and an annular cooling gallery surrounding an undercrown region. An outer wall depends from the upper combustion surface. An annular ring belt region is formed in the outer wall adjacent the upper combustion surface. The ring belt region has at least one ring groove formed therein. At least one oil passage extends from the at least one ring groove to the cooling gallery. The oil passage has a first portion depending radially inwardly from the ring groove and a second portion ascending radially inwardly from the first portion to the cooling gallery.

Abstract translation: 提供了一种用于内燃机的活塞及其构造方法。 活塞包括具有上部燃烧表面的活塞体和围绕底下区域的环形冷却槽。 外壁依靠上燃烧面。 在邻近上燃烧表面的外壁中形成环形环带区域。 环带区域中形成有至少一个环槽。 至少一个油路从至少一个环槽延伸到冷却槽。 油通道具有从环槽径向向内的第一部分和从第一部分向冷却槽径向向内上升的第二部分。

公开(公告)号：US20140020648A1

公开(公告)日：2014-01-23

申请号：US13946866

申请日：2013-07-19

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Miguel Azevedo ,  Keith Hampton

IPC: F16J1/09

CPC classification number: F16J1/09 ,  F02F3/22 ,  F16J9/062 ,  F16J9/22 ,  Y10T29/49265

Abstract: A piston for an internal combustion engine and method of construction thereof are provided. The piston includes a piston body having an upper combustion surface and an annular cooling gallery surrounding an undercrown region. An outer wall depends from the upper combustion surface. An annular ring belt region is formed in the outer wall adjacent the upper combustion surface. The ring belt region has at least one ring groove formed therein. At least one oil passage extends from the at least one ring groove to the cooling gallery. The oil passage has a first portion depending radially inwardly from the ring groove and a second portion ascending radially inwardly from the first portion to the cooling gallery.

Abstract translation: 提供了一种用于内燃机的活塞及其构造方法。 活塞包括具有上部燃烧表面的活塞体和围绕底下区域的环形冷却槽。 外壁依靠上燃烧面。 在邻近上燃烧表面的外壁中形成环形环带区域。 环带区域中形成有至少一个环槽。 至少一个油路从至少一个环槽延伸到冷却槽。 油通道具有从环槽径向向内的第一部分和从第一部分向冷却槽径向向内上升的第二部分。