公开(公告)号：US10738731B2

公开(公告)日：2020-08-11

申请号：US14988885

申请日：2016-01-06

Applicant: Federal-Mogul Corporation

Inventor： Jeff Riffe ,  Michael Weinenger

IPC: F02F3/00 ,  F02F3/22 ,  F02F3/16

Abstract: A galleryless steel piston for an internal combustion engine is provided. The piston has a monolithic piston body including an upper wall forming an upper combustion surface with first and second portions. The first portion extends annularly along an outer periphery of the upper wall and the second portion defines a combustion bowl. The piston further includes undercrown surface located directly opposite the combustion bowl with an exposed 2-dimensional surface area allowing for contact of cooling oil. The exposed 2-dimensional surface area ranges from 25 to 60 percent of a cross-sectional area defined by a maximum outer diameter of the piston body. To further enhance cooling, a portion of the undercrown surface is concave or convex, such that oil is channeled during reciprocation of the piston from one side to the opposite side of the piston.

公开(公告)号：US10094327B2

公开(公告)日：2018-10-09

申请号：US14940416

申请日：2015-11-13

Applicant: Federal Mogul Corporation

Inventor： Jeff Riffe ,  Michael Weinenger

IPC: F02F3/00 ,  F02F3/16 ,  B23P15/10

Abstract: A galleryless piston for an internal combustion engine is provided. The piston has a monolithic piston body including an upper wall forming an upper combustion surface with first and second portions. The first portion extends annularly along an outer periphery of the upper wall and the second portion includes a combustion bowl. The first portion can also include valve pockets formed therein to reduce weight. The upper wall has an undercrown surface directly opposite the second portion of the upper combustion surface. To enhance cooling, a center portion of the undercrown surface is concave, such that oil is channeled during reciprocation of the piston from one side to the opposite side of the piston.

公开(公告)号：US09951714B2

公开(公告)日：2018-04-24

申请号：US14700654

申请日：2015-04-30

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Michael Weinenger

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

CPC classification number: F02F3/18 ,  B23P15/10 ,  F02F3/0092 ,  F05C2201/021 ,  F05C2201/0448 ,  Y10T29/4925 ,  Y10T29/49254

Abstract: A steel piston for an internal combustion including a cooling gallery containing a solid coolant, such as an aluminum-based material, is provided. The solid coolant has a thermal conductivity which is greater than the thermal conductivity of the steel material and fills at least 15 volume percent (vol. %) of the cooling gallery. The solid coolant provides for exceptional cooling along a crown of the piston, reduces corrosion and erosion along the crown, and avoids the problem of oil coking.

公开(公告)号：US20160090939A1

公开(公告)日：2016-03-31

申请号：US14940416

申请日：2015-11-13

Applicant: Federal Mogul Corporation

Inventor： Jeff Riffe ,  Michael Weinenger

IPC: F02F3/16 ,  B23P15/10 ,  F02F3/00

CPC classification number: F02F3/16 ,  B23P15/10 ,  F02F3/00 ,  F02F3/0069 ,  F02F3/0092 ,  F02F2003/0007 ,  Y10T29/49265

Abstract: A galleryless piston for an internal combustion engine is provided. The piston has a monolithic piston body including an upper wall forming an upper combustion surface with first and second portions. The first portion extends annularly along an outer periphery of the upper wall and the second portion includes a combustion bowl. The first portion can also include valve pockets formed therein to reduce weight. The upper wall has an undercrown surface directly opposite the second portion of the upper combustion surface. To enhance cooling, a center portion of the undercrown surface is concave, such that oil is channeled during reciprocation of the piston from one side to the opposite side of the piston.

Abstract translation: 提供了一种用于内燃机的无水壶活塞。 活塞具有整体活塞体，该主体包括形成具有第一和第二部分的上部燃烧表面的上壁。 第一部分沿着上壁的外周呈环状延伸，第二部分包括燃烧碗。 第一部分还可以包括形成在其中的阀座以减轻重量。 上壁具有与上燃烧表面的第二部分正对的底下表面。 为了增强冷却，内底表面的中心部分是凹形的，使得在活塞从活塞的一侧往活塞的相对侧往复运动时引导油。

公开(公告)号：US20150122212A1

公开(公告)日：2015-05-07

申请号：US14535839

申请日：2014-11-07

Applicant: Federal Mogul Corporation

Inventor： Jeff Riffe ,  Michael Weinenger

IPC: F02F3/00 ,  B23P15/10

CPC classification number: F02F3/16 ,  B23P15/10 ,  F02F3/00 ,  F02F3/0069 ,  F02F3/0092 ,  F02F2003/0007 ,  Y10T29/49265

Abstract: A galleryless piston for an internal combustion engine and method of construction thereof are provided. The piston has a monolithic piston body extending along a central longitudinal axis. The piston body has an upper wall forming an upper combustion surface with first and second portions, with the first portion extending annularly along an outer periphery of the upper wall and the second portion forming a combustion bowl. The upper wall has an undercrown surface on an underside of the combustion bowl directly opposite the second portion of the upper combustion surface. The undercrown surface has an openly exposed 2-dimensional surface area, as viewed looking along the central longitudinal axis, between about 35-60 percent of an area defined by a maximum outer diameter of the piston body, thereby providing an expansive area against which oil being splashed or sprayed can freely contact to cool the piston.

Abstract translation: 提供一种用于内燃机的无水壶活塞及其构造方法。 活塞具有沿着中心纵向轴线延伸的整体式活塞体。 活塞体具有形成具有第一和第二部分的上部燃烧表面的上壁，第一部分沿着上壁的外周向环状延伸，第二部分形成燃烧碗。 上壁在燃烧碗的下侧具有与上部燃烧表面的第二部分正对的正下方的表面。 底部表面具有露出的二维表面区域，沿着中心纵向轴线观察，在由活塞体的最大外径限定的面积的约35-60％之间，从而提供膨胀区域 飞溅或喷涂可以自由接触以冷却活塞。

公开(公告)号：US10584659B2

公开(公告)日：2020-03-10

申请号：US15077168

申请日：2016-03-22

Applicant: Federal-Mogul Corporation

Inventor： Michael Weinenger ,  Jeffrey L. Riffe ,  Miguel Azevedo

IPC: F02F3/26 ,  F02F3/22 ,  B33Y10/00 ,  B33Y80/00 ,  B21K1/18 ,  B22D15/02 ,  B22D25/02 ,  F02F3/00

Abstract: A piston for an internal combustion engine and method of construction is provided. The piston has a robust, lightweight monolithic piston body including an upper wall forming a combustion bowl depending radially inwardly from an annular, uppermost combustion surface. An undercrown surface is formed on an underside of the combustion bowl, with at least a portion of the undercrown surface being bounded by diametrically opposite skirt portions, pin bosses and strut portions connecting the skirt portions to the pin bosses. The bounded undercrown surface has an openly exposed surface area, as viewed looking along a central longitudinal axis along which the piston reciprocates, providing an expansive area against which oil being splashed or sprayed can come into direct contact with to enhance cooling the piston while in use. Through channels extending over upper regions of the pin bosses can be provided to further reduce weight and facilitate cooling.

公开(公告)号：US10184422B2

公开(公告)日：2019-01-22

申请号：US14981319

申请日：2015-12-28

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo ,  Michael Weinenger

IPC: F01P3/04 ,  F02F3/22 ,  F02F3/26 ,  F16C7/02 ,  F02F3/00 ,  F16J1/09 ,  F16J1/14 ,  F16J1/08 ,  F02F3/18

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.

公开(公告)号：US09068531B2

公开(公告)日：2015-06-30

申请号：US13708656

申请日：2012-12-07

Applicant: Federal-Mogul Corporation

Inventor： Florin Muscas ,  Michael Weinenger

IPC: F02F3/26 ,  F02F3/16 ,  B23P15/10 ,  F02F3/00 ,  F02F3/22

CPC classification number: F02F3/26 ,  B23P15/10 ,  F02F3/003 ,  F02F3/22 ,  Y10T29/49249

Abstract: A piston for an internal combustion engine and method of construction thereof is provided. The piston includes a piston body having an upper combustion surface with a combustion bowl depending from the upper combustion surface. The piston body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface. A cooling gallery is configured in radial alignment with the ring belt region. An annular combustion bowl rim region extends between the upper combustion surface and the combustion bowl, and a bonded seam extends from the combustion bowl rim region radially outwardly to the cooling gallery. The bonded seam has material properties exhibiting an enhanced ability to withstand the extreme temperature, pressure, stress and highly corrosive and erosive effects of the combustion gases relative to the surrounding material of the piston body.

Abstract translation: 提供了一种内燃机的活塞及其构造方法。 活塞包括具有上燃烧表面的活塞体，燃烧碗从上燃烧表面悬垂。 活塞体具有环形带区域，该环形带区域构造成用于接收与上部燃烧表面相邻的至少一个活塞环。 冷却库被配置成与环带区域径向对准。 环形燃烧碗边缘区域在上燃烧表面和燃烧碗之间延伸，并且粘合的接缝从燃烧碗边缘区域径向向外延伸到冷却槽。 粘合缝具有表现出增强的耐受燃烧气体相对于活塞体的周围材料的极端温度，压力，应力和高腐蚀性和侵蚀作用的能力的材料性质。

公开(公告)号：US20150075456A1

公开(公告)日：2015-03-19

申请号：US14487498

申请日：2014-09-16

Applicant: Federal-Mogul Corporation

Inventor： Michael Weinenger

IPC: F02F3/00 ,  F02F3/20

CPC classification number: F02F3/00 ,  F02F3/20 ,  F02F2003/0007 ,  F16J1/09 ,  F16J1/22

Abstract: A piston assembly having a piston member and a connecting rod. The piston member has a crown portion and a lower portion bonded together with a cooling gallery formed between them. The connecting rod has a ball end which is positioned in a socket in the piston member. In one embodiment, the ball end can have two flat surfaces and be held in position by C-clips. In another embodiment, the ball end is cylindrically shaped and the socket has a corresponding shape.

Abstract translation: 具有活塞构件和连杆的活塞组件。 活塞构件具有冠部和下部，其与形成在它们之间的冷却槽结合在一起。 连杆具有位于活塞部件中的插座中的球端。 在一个实施例中，球端可以具有两个平坦表面并且通过C形夹保持就位。 在另一个实施例中，球端是圆柱形的并且插座具有相应的形状。

公开(公告)号：US20130146017A1

公开(公告)日：2013-06-13

申请号：US13708656

申请日：2012-12-07

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Florin Muscas ,  Michael Weinenger

IPC: F02F3/26 ,  B23P15/10

CPC classification number: F02F3/26 ,  B23P15/10 ,  F02F3/003 ,  F02F3/22 ,  Y10T29/49249

Abstract: A piston for an internal combustion engine and method of construction thereof is provided. The piston includes a piston body having an upper combustion surface with a combustion bowl depending from the upper combustion surface. The piston body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface. A cooling gallery is configured in radial alignment with the ring belt region. An annular combustion bowl rim region extends between the upper combustion surface and the combustion bowl, and a bonded seam extends from the combustion bowl rim region radially outwardly to the cooling gallery. The bonded seam has material properties exhibiting an enhanced ability to withstand the extreme temperature, pressure, stress and highly corrosive and erosive effects of the combustion gases relative to the surrounding material of the piston body.

Abstract translation: 提供了一种内燃机的活塞及其构造方法。 活塞包括具有上燃烧表面的活塞体，燃烧碗从上燃烧表面悬垂。 活塞体具有环形带区域，该环形带区域构造成用于接收与上部燃烧表面相邻的至少一个活塞环。 冷却库被配置成与环带区域径向对准。 环形燃烧碗边缘区域在上燃烧表面和燃烧碗之间延伸，并且粘合的接缝从燃烧碗边缘区域径向向外延伸到冷却槽。 粘合缝具有表现出增强的耐受燃烧气体相对于活塞体的周围材料的极端温度，压力，应力和高腐蚀性和侵蚀作用的能力的材料性质。