公开(公告)号：US11951547B2

公开(公告)日：2024-04-09

申请号：US16627682

申请日：2018-10-23

申请人： TPR CO., LTD.

发明人： Yoshio Bando ,  Fumiya Ito ,  Kenichi Harashina

IPC分类号： B22F5/00 ,  B22F3/16 ,  C22C38/16 ,  F01L3/08

CPC分类号： B22F5/008 ,  B22F3/16 ,  C22C38/16 ,  F01L3/08 ,  B22F2301/10 ,  B22F2301/35 ,  F01L2301/00 ,  F01L2303/00 ,  B22F2998/10 ,  B22F1/17 ,  B22F1/09 ,  B22F3/02 ,  B22F3/10

摘要： Provided are a valve guide made of an iron-based sintered alloy excellent in wear resistance and thermal conductivity, and a method of producing the same. Specifically, provided are a method of producing a valve guide made of an iron-based sintered alloy, the method including the steps of: molding raw material powder including diffusion-alloyed powder including core iron powder and Cu bonded to the core iron powder through diffusion to obtain a molded body; and sintering the molded body, to thereby produce a valve guide made of an iron-based sintered alloy, and a valve guide produced by the production method.

公开(公告)号：US20230417162A1

公开(公告)日：2023-12-28

申请号：US17848076

申请日：2022-06-23

申请人： Caterpillar Inc.

发明人： Chad Palmer Koci ,  Kenth I. Svensson ,  Eric Donald Wiebrecht ,  Venkatesan Veeriah ,  Qingzhong Li ,  Suresh Babu Chennagowni

IPC分类号： F01L3/04 ,  C23C26/00

CPC分类号： F01L3/04 ,  C23C26/00 ,  F01L2301/00

摘要： An engine component comprises one or more thermal barrier coatings applied to one or more areas of the engine component. The thermal barrier coatings reduce the temperature rate of change of the areas to which the thermal barrier coating is applied. Reducing the temperature rate of change can help reduce lattice structure damage caused by different temperatures in different areas of the engine component. The thermal barrier coating can be applied as a monolithic layer on a surface of the engine component or can be applied in different areas using patterns. The patterns allow for the tuning of the performance characteristics (temperature rate of change) of the areas of the engine component and can help reduce defect propagation, such as cracks, in the thermal barrier coating from one area of the thermal barrier coating to other areas of the thermal barrier coating.

公开(公告)号：US11761402B2

公开(公告)日：2023-09-19

申请号：US17908330

申请日：2021-03-01

申请人： Briggs & Stratton, LLC

发明人： Jacob Zuehl ,  Richard Sebzda ,  Vernon Moss

IPC分类号： F02F1/06 ,  F02F7/00 ,  F01L1/14 ,  F01L1/18 ,  F01L3/02 ,  F01P1/00 ,  F02F1/00 ,  F02F3/00 ,  F16J9/28 ,  F16C7/02

CPC分类号： F02F7/0085 ,  F01L1/146 ,  F01L1/181 ,  F01L3/02 ,  F01P1/00 ,  F02F1/004 ,  F02F3/0084 ,  F16J9/28 ,  F01L2301/00 ,  F16C7/023

摘要： An internal combustion engine includes an engine block, a piston, a cylinder head, and a valve train. The engine block includes a cylinder block including a cylinder bore and a crankcase defining a crankcase chamber with a crankshaft positioned within the crankcase chamber. The piston is coupled to the crankshaft and configured to reciprocate within the cylinder bore. The cylinder head is coupled to the cylinder block. The valve train includes a camshaft, a first and second pushrod, a first and second rocker arm, an exhaust valve housed, and an intake valve. The first rocker arm, the second rocker arm, the exhaust valve, and the intake valve each include at least a layer of a low friction material. The first and second pushrod each pass through a pushrod seal to prevent fluid from reaching the rocker chamber to fluidly isolate the rocker chamber from the crankcase chamber.

公开(公告)号：US11982212B2

公开(公告)日：2024-05-14

申请号：US18028436

申请日：2021-03-16

申请人： FUJI OOZX Inc.

发明人： Takaaki Kumagai ,  Koji Kushima

IPC分类号： F01L3/12 ,  B21K1/24 ,  F01L3/02 ,  F16K49/00

CPC分类号： F01L3/12 ,  B21K1/24 ,  F01L3/02 ,  F16K49/00 ,  F01L2301/00 ,  F01L2303/00

摘要： A hollow engine valve includes a shaft portion and an umbrella portion of which diameter is enlarged to form an umbrella shape to be provided on a base end of the shaft portion, a cooling material being enclosed in a hollow portion that is at least formed inside the shaft portion. The shaft portion comprises a first shaft portion in a tip end side, a second shaft portion that is provided in a base end side to have an outer diameter larger than that of the first shaft portion, and a stepped portion formed by a difference in the outer diameters between the first and second shaft portions. A wall thickness of the stepped portion is larger than that of the second shaft portion.

公开(公告)号：US11913363B2

公开(公告)日：2024-02-27

申请号：US18211976

申请日：2023-06-20

申请人： MAHLE International GmbH

发明人： Tilo Hentschel ,  Mathias Rummel ,  Christoph Steinmetz

IPC分类号： F01L1/04 ,  B21D53/26 ,  F01L1/047

CPC分类号： F01L1/047 ,  B21D53/264 ,  F01L2301/00 ,  F01L2303/00

摘要： A method for manufacturing a position indicator sensor wheel for a camshaft is disclosed. The position indicator includes an axially extending passage for connecting to the camshaft and at least one radially projecting tooth. The method includes providing a sheet from a sheet material; introducing the passage into the sheet; and roughening a radial inner surface of the passage in at least one rough portion.

公开(公告)号：US11885246B2

公开(公告)日：2024-01-30

申请号：US17503597

申请日：2021-10-18

申请人： Caterpillar Inc.

发明人： Jeffrey Clark Krieger ,  Michael D. Roley ,  Kyle Michael Rader

IPC分类号： F01L3/20 ,  F01L3/02 ,  B21K1/22 ,  F01L3/06 ,  F02F1/24

CPC分类号： F01L3/20 ,  F01L3/02 ,  B21K1/22 ,  F01L3/06 ,  F01L2301/00 ,  F01L2303/00 ,  F02F2001/245

摘要： An engine valve includes a stem, a head comprising an outer lip surface, a seating surface extending from the outer lip surface toward the stem, and a combustion surface extending from the outer lip surface on the opposite side of the head as compared to the seating surface. The combustion surface includes a first convex arcuate surface spaced away from the outer lip surface, at least partially forming a raised ring, and a first concave arcuate surface spaced away from the outer lip surface, at least partially forming a dimple.

公开(公告)号：US20230407425A1

公开(公告)日：2023-12-21

申请号：US17828741

申请日：2022-05-31

申请人： SCHAEFFLER TECHNOLOGIES AG & CO. KG

发明人： Markus Dinkel ,  Yegor Rudnik ,  Werner Trojahn ,  Michael Conlin ,  Michael White

IPC分类号： C21D1/78 ,  F01L3/02 ,  C21D1/18

CPC分类号： C21D1/785 ,  F01L2301/00 ,  C21D1/18 ,  F01L3/02

摘要： A method of treating a valve body is disclosed herein. The method includes using a medium carbon steel, and treating the valve body to a carburizing heating step, an intermediate annealing step, a hardening step, and a tempering step. These steps provide a durable valve seat surface for the valve body such that the valve seat can withstand the conditions that involve high friction or otherwise intense operating conditions, such as oil and gas applications.

公开(公告)号：US12037929B2

公开(公告)日：2024-07-16

申请号：US17613667

申请日：2020-05-22

申请人： Eaton Intelligent Power Limited

发明人： Emanuele Raimondi ,  Massimo D'Amore ,  Jeffrey R. Brown ,  Ramy Rezkalla ,  Matthew A. Vance ,  Andrei D. Radulescu ,  Brandon J. Elliott

IPC分类号： F01L1/18 ,  F01L13/00 ,  F01L1/46

CPC分类号： F01L1/185 ,  F01L13/0005 ,  F01L13/0036 ,  F01L2001/186 ,  F01L1/46 ,  F01L2001/467 ,  F01L2013/001 ,  F01L2301/00 ,  F01L2303/00 ,  F01L2305/02

摘要： A switching roller finger follower (SRFF) for valve actuation includes an outer arm (16), a first inner arm (12), a bearing axle (50) and a latch pin (26). The outer arm (16) is formed of a metal stamping, and is pivotally coupled to a main axle (40). The first inner arm (12) is coupled to the main axle (40) and is pivotably secure to the outer arm. The bearing axle (50) extends through the outer arm and the first inner arm. The bearing axle supports a roller (20) thereon. The latch pin (26) is slidably disposed in the outer arm (16) and is movable between at least a first position where the outer arm (16) and the first inner arm (12) are coupled for concurrent rotation and a second position wherein one of the outer arm and the first inner arm are configured to rotate relative to the other arm.

公开(公告)号：US11732622B2

公开(公告)日：2023-08-22

申请号：US17057469

申请日：2019-04-18

申请人： FEDERAL-MOGUL VALVETRAIN GMBH

发明人： Thorsten Matthais ,  Antonius Wolking ,  Guido Bayard

IPC分类号： F01L3/14 ,  B21D22/16 ,  B21K1/22

CPC分类号： F01L3/14 ,  B21D22/16 ,  B21K1/22 ,  F01L2301/00

摘要： A method for producing a valve body of a hollow valve with optimised interior stem geometry includes a preform with a valve plate and a tubular wall surrounding a cavity. Flow forming the tubular wall over a flow-forming mandrel, which is inserted into the cavity to enlarge a length of the tubular wall. An interior area of the tubular wall is embossed with a structure either due to the fact that the flow-forming mandrel is a structuring mandrel having a surface structure, or alternatively, because the method includes a further step of reducing an outer diameter of the tubular wall by swaging or drawing and ironing over a structuring mandrel. Furthermore, a hollow valve is produced by this method.

公开(公告)号：US11732620B2

公开(公告)日：2023-08-22

申请号：US17877800

申请日：2022-07-29

申请人： Mahle International GmbH

发明人： Frank Dautel ,  Peter Mantler ,  Christoph Steinmetz

IPC分类号： F01L1/047 ,  F01L1/46 ,  F01L13/00

CPC分类号： F01L1/047 ,  F01L1/46 ,  F01L2001/0475 ,  F01L2013/111 ,  F01L2301/00 ,  F01L2820/041

摘要： A combined plug-sensor wheel for a camshaft is disclosed. The combined plug-sensor wheel includes a pin projecting in an axial direction of the camshaft. The pin, when inserted into the camshaft, seals the camshaft in a fluid-tight manner. According to an implementation, the combined plug-sensor wheel and the camshaft are incorporated into an internal combustion engine.