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1. 发明授权

US12060628B2 Sintered valve guide and method for producing same 有权
公开(公告)号：US12060628B2
公开(公告)日：2024-08-13
申请号：US16971821
申请日：2019-02-22
申请人： HITACHI CHEMICAL COMPANY, LTD.
发明人： Daisuke Fukae , Hideaki Kawata
IPC分类号： B22F3/10 , B22F5/00 , C22C33/02 , F01L3/08
CPC分类号： C22C33/0264 , B22F3/1003 , B22F5/00 , F01L3/08 , B22F2301/35 , B22F2998/10 , B22F1/10 , B22F3/02 , B22F3/1007 , B22F3/1003
摘要： A sintered valve guide having a metallic structure that has a matrix composed of a martensite phase dispersed in a pearlite single phase structure or a mixed structure of ferrite and pearlite, and a pore dispersed within the matrix, wherein the martensite phase exists in a proportion such that an area ratio of the martensite phase in a structure cross-section is within a range from 1 to 10% of the matrix is provided. A method for producing a sintered valve guide is provided, the method includes preparing a mixed powder by adding a copper-phosphorous alloy powder, a nickel powder and a graphite powder to an iron powder, molding the mixed powder into a molded body having a density of 6.8 to 7.2 Mg/m3, and sintering the obtained molded body at a temperature of 950 to 1,200° C.

2. 发明公开

US20240167400A1 A CYLINDER HEAD FOR A LEAN-BURN GASOLINE ENGINE 审中-公开
公开(公告)号：US20240167400A1
公开(公告)日：2024-05-23
申请号：US18551626
申请日：2021-03-26
申请人： JAGUAR LAND ROVER LIMITED
发明人： Jack JOHNSON , Lyn MCWILLIAM
IPC分类号： F01L3/08 , F02F1/42
CPC分类号： F01L3/08 , F02F1/4235 , F01L2303/00 , F01L2820/02
摘要： A lean-burn gasoline engine (110) is described, which comprises an air intake port having an air intake port inlet, an air intake port outlet, and an air channel (45) connecting the air intake port inlet to the air intake port outlet, a combustion chamber (50) having a combustion chamber inlet being connected to the air intake port outlet, the combustion chamber inlet having a throat where the air intake port outlet meets the combustion chamber inlet, a movable valve (51) comprising a valve head bottom surface (61) that faces the combustion chamber (50), a valve head top surface (62) that faces the air intake port and a valve stem (53), the movable valve (51) being arranged to move between a closed state for closing off the combustion chamber inlet and an opened state wherein intake air can flow from the air intake port into the combustion chamber (50), and a valve guide opening (69) in an upper wall of the air channel opposite the top surface (62) of the movable valve (51), and a valve guide passage (66) extending into the upper wall and away from the valve guide opening (69), the valve guide passage (66) having a passage wall and housing a valve guide (65) arranged to guide the valve stem (63) and permit movement of the movable valve (51) between the closed state and an opened state. The valve guide opening (66) comprises a first edge distal from the air intake port outlet and a second edge proximal to the air intake port outlet, the first edge defining a sharp transition, at a first angle, between the upper wall and the passage wall of the valve guide passage (66).

3. 发明公开

US20240141810A1 VALVE STEM SEAL COMPRISING A VALVE ROTATING DEVICE 审中-公开
公开(公告)号：US20240141810A1
公开(公告)日：2024-05-02
申请号：US18550620
申请日：2021-11-16
申请人： FEDERAL-MOGUL VALVETRAIN GMBH
发明人： DIRK SCHOBER , FRANK ZWEIN , FLORIAN RINGELING , THORSTEN MATTHIAS , STEFAN KELLERMANN
IPC分类号： F01L1/32 , F01L3/08 , F01L3/10
CPC分类号： F01L1/32 , F01L3/08 , F01L3/10
摘要： A valve rotating device with valve stem seal includes a valve rotating device, with a cylinder head rest and a spring rest intended to bear against a valve spring during operation. The valve rotating device is designed to rotate the spring rest relative to the cylinder head rest during operation. A valve stem seal is attached to the cylinder head rest of the valve rotating device. The valve stem seal being designed to bear against a valve stem and to seal same during rotational and axial movements.

4. 发明授权

US11719138B2 Sintered alloy valve guide and method of producing sintered alloy valve guide 有权
公开(公告)号：US11719138B2
公开(公告)日：2023-08-08
申请号：US17922613
申请日：2021-04-27
申请人： TPR Co., Ltd.
发明人： Fumiya Ito , Shohtaroh Hara
IPC分类号： F01L3/08 , B22F3/26 , B22F5/10 , B22F7/00 , B22F3/16 , B22F3/24
CPC分类号： F01L3/08 , B22F3/16 , B22F3/26 , B22F5/106 , B22F7/002 , B22F2003/247 , B22F2201/02 , B22F2201/20 , B22F2301/10 , B22F2301/35 , B22F2302/40 , B22F2998/10 , F01L2301/00
摘要： The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.

5. 发明授权

US11686226B2 Sintered alloy valve guide and method of producing sintered alloy valve guide 有权
公开(公告)号：US11686226B2
公开(公告)日：2023-06-27
申请号：US17922613
申请日：2021-04-27
申请人： TPR Co., Ltd.
发明人： Fumiya Ito , Shohtaroh Hara
IPC分类号： F01L3/08 , B22F3/26 , B22F5/10 , B22F7/00 , B22F3/16 , B22F3/24
CPC分类号： F01L3/08 , B22F3/16 , B22F3/26 , B22F5/106 , B22F7/002 , B22F2003/247 , B22F2201/02 , B22F2201/20 , B22F2301/10 , B22F2301/35 , B22F2302/40 , B22F2998/10 , F01L2301/00
摘要： The present invention addresses the problem of providing a sintered alloy valve guide capable of inhibiting valve adhesion even in a high-temperature environment. The problem can be solved by a sintered alloy valve guide impregnated with a lubricating oil including pores that are sealed on the valve guide outer circumferential surface. More particularly, the problem is solved by the sealing step of performing a sealing treatment of pores on the outer circumferential surface of a sintered body impregnated with a lubricating oil.

6. 发明授权

US11506091B2 Poppet valve and internal combustion piston engine head including same 有权
公开(公告)号：US11506091B2
公开(公告)日：2022-11-22
申请号：US17650118
申请日：2022-02-07
申请人： Cyclazoom, LLC
发明人： Michael Kipnis
IPC分类号： F01L3/20 , F01L3/08 , F01L3/22
摘要： Internal combustion piston engine includes a cylinder head partly defining two ducts and a combustion chamber, and poppet valves movably arranged in the cylinder head between positions allowing or preventing flow between the combustion chamber and the ducts. The poppet valve has a stem, a valve head having a hollow interior space, a lower surface facing the combustion chamber, an upper surface including a portion adjacent the stem, and a peripheral edge section that extends from the upper surface of the valve head to the lower surface. The valve head is formed separate from but connected to the valve stem in a manner to enclose the hollow space, for example, by a circumferential welding seam. The peripheral edge section contains an arcuate contact surface that extends from the upper to lower surfaces of the valve head and without any sharp edges between upper and lower surfaces.

7. 发明申请

US20210388742A1 VALVE ROTATING DEVICE 有权
公开(公告)号：US20210388742A1
公开(公告)日：2021-12-16
申请号：US17298302
申请日：2019-11-22
申请人： MAN Truck & Bus SE
发明人： Ulrich Boehme
IPC分类号： F01L1/32 , F01L1/46 , F01L3/08
摘要： The invention relates to a valve rotating device (24) for a valve (10), preferably an intake valve or exhaust valve, of an internal combustion engine The valve rotating device (24) has a valve restoring spring (22) for preloading the valve (10) toward a closed position of the valve (10) and a Belleville spring (40), which is arranged in operative connection between the valve restoring spring (22) and a support surface (44), which is lubricated with a lubricating fluid. An at least partially, preferably completely, peripherally extending collar portion (46) is arranged on a periphery, preferably inner periphery, of the Belleville spring (40). The collar portion (46) can have a wear-reducing effect and/or can make the valve rotating device (24) easier to install.

8. 发明授权

US11187116B2 Sliding member, and sliding member of internal combustion engine 有权
公开(公告)号：US11187116B2
公开(公告)日：2021-11-30
申请号：US16483354
申请日：2018-02-02
申请人： Nissan Motor Co., Ltd.
发明人： Yoshinori Izawa
IPC分类号： F01L3/04 , F01L3/08 , C23C24/04
摘要： A sliding member includes a base substrate and a coating layer formed on the base substrate. The coating layer includes an inorganic part derived from at least one type of inorganic particles selected from the group consisting of iron base alloy particles, cobalt base alloy particles, chromium base alloy particles, nickel base alloy particles, molybdenum base alloy particles, and ceramic particles, and a metal part derived from at least one type of metal particles selected from the group consisting of iron base alloy particles other than listed in the above group, copper particles, and copper alloy particles. The inorganic part is bonded to another inorganic part and/or the metal part via interfaces therebetween, and the metal part is bonded to another metal part and/or the inorganic part via interfaces therebetween. The sliding member includes an interface layer including at least one of a diffusion layer and an intermetallic compound layer on at least one part of an interface between the base substrate and the coating layer or interfaces between the inorganic part and the metal part, the inorganic parts, and the metal parts. The interface layer has a thickness of equal to or less than 2 μm.

9. 发明申请

US20210095581A1 SEALING DEVICE AND MANUFACTURING METHOD THEREFOR 有权
公开(公告)号：US20210095581A1
公开(公告)日：2021-04-01
申请号：US16954844
申请日：2019-02-06
申请人： NOK CORPORATION
发明人： Masamichi KISHIRO , Nobuhiro NISHIMURA
IPC分类号： F01L3/08 , F16J15/3232
摘要： A sealing device seals a rod having a cylindrical part and a cylindrical guide that guides reciprocation of the rod in an axial direction of the rod. The sealing device includes an elastic ring formed of an elastic material, and a rigid ring formed of a rigid material fixed to the elastic ring for reinforcing the elastic ring. The elastic ring includes a lip with which an outer peripheral surface of the rod is in slidable contact. The rigid ring includes a rigid-ring cylindrical part located radially outside an end portion of the guide. The rigid-ring cylindrical part includes multiple hook hasps engaged into at least one recess formed on an outer peripheral surface of the guide. Each of the multiple hook hasps includes a root portion and a distal end portion located radially inward of the root portion and fitted into the recess. A thin portion is formed at the root portion of the hook hasp, the thin portion being thinner than other parts of the hook hasp.

10. 发明授权

US10590812B2 Sliding mechanism 有权
公开(公告)号：US10590812B2
公开(公告)日：2020-03-17
申请号：US15117297
申请日：2015-01-16
申请人： NISSAN MOTOR CO., LTD.
发明人： Yoshinori Izawa , Yutaka Mabuchi
IPC分类号： F01L3/02 , C22C9/00 , F01L3/08 , C23C8/20 , C23C8/24 , C23C8/22 , C23C8/26 , C23C24/00 , C23C30/00 , F01L3/14 , F01L3/16
摘要： A sliding mechanism 1 includes a first sliding member 10 and a partner second sliding member 20 configured to slide relative to the first sliding member 10. The first sliding member 10 includes a matrix phase 11 and a hard phase 13 that is harder than the matrix phase 11, in which the hard phase 13 is embedded in the matrix phase 11 in a dispersed state. The second sliding member 20 includes a base 21 and a surface-treatment layer 23 that is formed on the sliding surface 20 of the base 21 and is harder than the matrix phase 11.

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