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：US10323580B2

公开(公告)日：2019-06-18

申请号：US15349820

申请日：2016-11-11

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo

IPC: F02D15/04 ,  F02B75/04

Abstract: A power cylinder assembly for an internal combustion engine includes a cylinder wall that surrounds a cylinder bore that extends along an axis. A piston assembly is positioned in the cylinder bore, and the piston assembly has a combustion surface that divides the cylinder bore into a combustion chamber on one axial side of the combustion surface and a crank case on an opposite axial side of the combustion surface. The combustion surface is partially defined by a first upper surface of a first piece and partially defined by a second upper surface of a second piece. The second piece is moveable relative to the piston body during operation of the power cylinder assembly to change a compression ratio of the power cylinder assembly.

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：US10125719B2

公开(公告)日：2018-11-13

申请号：US14928870

申请日：2015-10-30

Applicant: Federal-Mogul Corporation

Inventor： Miguel Azevedo ,  Gregory Salenbien ,  Matthew Belford

IPC: F02F3/00 ,  F16J9/06 ,  F16J9/20 ,  F16J9/12

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：US09261190B2

公开(公告)日：2016-02-16

申请号：US13827255

申请日：2013-03-14

Applicant: Federal-Mogul Corporation

Inventor： Gregory Salenbien ,  Miguel Azevedo ,  Matthew Belford

IPC: F16J9/00 ,  F16J9/02 ,  B23P15/06 ,  F16J9/14

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的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：US10774781B2

公开(公告)日：2020-09-15

申请号：US15414954

申请日：2017-01-25

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Miguel Azevedo ,  Warran Boyd Lineton ,  Geoffrey Neil Ainsworth

IPC: F02F3/22 ,  F02F3/00

Abstract: A steel piston with anti-coking design features is provided. The piston includes an upper crown portion and a lower crown portion forming an outer cooling gallery therebetween. The outer cooling gallery is substantially closed except for an oil inlet, oil outlet, and optional oil passage(s) to a central cooling gallery. According to one embodiment, at least one anti-coking insert is disposed in the outer cooling gallery and sized to prevent escaping through the oil inlet or the oil outlet. For example, the insert(s) can comprise a helical coil, a plurality of steel balls, coil springs, or chips formed of polymer with abrasive filler. Alternatively, an outer gallery floor to the outer cooling gallery includes a plurality of anti-coking openings disposed sequentially in decreasing spaced relation from one another, or anti-coking openings with varying lengths.

公开(公告)号：US10247132B2

公开(公告)日：2019-04-02

申请号：US15011852

申请日：2016-02-01

Applicant: Federal-Mogul Corporation

Inventor： Gregory Salenbien ,  Miguel Azevedo

IPC: F02F3/18 ,  F02F3/16 ,  F02F3/00

Abstract: A piston for an internal combustion engine and method of construction thereof is provided. The piston has a piston body including an upper part and a lower part. The upper part has an upper combustion surface configured for direct exposure to combustion gases within a cylinder bore with an undercrown surface beneath the upper combustion surface. The body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface with an annular cooling gallery configured radially inwardly from the ring belt region. The cooling gallery has a floor, wherein the floor has at least one through opening. A coolant medium is disposed in the cooling gallery, and a sealing member is disposed in the at least one through opening to seal off the coolant medium in the coolant gallery.

公开(公告)号：US09494233B2

公开(公告)日：2016-11-15

申请号：US15002753

申请日：2016-01-21

Applicant: FEDERAL-MOGUL CORPORATION

Inventor： Gregory Salenbien ,  Miguel Azevedo ,  Matthew Belford

IPC: F16J9/00 ,  F16J9/02 ,  B23P15/06 ,  F16J9/14

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.

公开(公告)号：US20160281635A1

公开(公告)日：2016-09-29

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 ,  B21K1/18 ,  B33Y10/00 ,  B33Y80/00 ,  B22D25/02 ,  B22D15/02

CPC classification number: F02F3/26 ,  B21K1/18 ,  B22D15/02 ,  B22D25/02 ,  B33Y10/00 ,  B33Y80/00 ,  F02F3/22 ,  F02F2003/0007 ,  F02F2200/06

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.

Abstract translation: 提供一种用于内燃机的活塞和结构方法。 活塞具有坚固，轻便的整体活塞体，其包括形成从环形的最上燃烧表面径向向内的燃烧碗的上壁。 在燃烧碗的下侧上形成底下的表面，其中底下表面的至少一部分由直径相对的裙部限定，销凸起和将裙部连接到销凸起的支柱部分。 有边的底下表面具有露出的露出的表面区域，当沿着中心纵向轴线观察时，活塞往复运动，中心纵向轴线提供了膨胀的区域，使得喷溅的油直接接触，以在使用中增强对活塞的冷却 。 可以提供穿过销凸起的上部区域的通道，以进一步减轻重量并促进冷却。

公开(公告)号：US20160222911A1

公开(公告)日：2016-08-04

申请号：US15011852

申请日：2016-02-01

Applicant: Federal-Mogul Corporation

Inventor： Gregory Salenbien ,  Miguel Azevedo

IPC: F02F3/18 ,  F02F3/00

CPC classification number: F02F3/18 ,  F02F3/003 ,  F02F3/16 ,  F02F2003/0061

Abstract: A piston for an internal combustion engine and method of construction thereof is provided. The piston has a piston body including an upper part and a lower part. The upper part has an upper combustion surface configured for direct exposure to combustion gases within a cylinder bore with an undercrown surface beneath the upper combustion surface. The body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface with an annular cooling gallery configured radially inwardly from the ring belt region. The cooling gallery has a floor, wherein the floor has at least one through opening. A coolant medium is disposed in the cooling gallery, and a sealing member is disposed in the at least one through opening to seal off the coolant medium in the coolant gallery.

Abstract translation: 提供了一种内燃机的活塞及其构造方法。 活塞具有包括上部和下部的活塞体。 上部具有上部燃烧表面，其构造成用于直接暴露于具有在上燃烧表面下方的底下表面的气缸孔内的燃烧气体。 主体具有环带区域，其被配置为接收与上燃烧表面相邻的至少一个活塞环，其具有从环带区域径向向内配置的环形冷却槽。 冷却库具有地板，其中地板具有至少一个通孔。 冷却剂介质设置在冷却槽中，并且密封构件设置在至少一个通孔中以密封冷却剂库中的冷却剂介质。