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公开(公告)号：US11566581B2
公开(公告)日：2023-01-31
申请号：US16763640
申请日：2018-11-14
发明人： Emmerich Ottliczky , Gerhard Luz , Eberhard Weiss , Ingo Roth
摘要： A steel piston (1) for a combustion engine, having an upper part in which a ring section (7) with at least one ring groove (8) is arranged, wherein the upper part is adjoined by a lower part that has two opposing skirt wall sections (2), wherein the two skirt wall sections (2) are connected via two mutually opposite case walls (3), wherein a pin bore (4) surrounded by a piston boss (6) is provided in each case wall (3). In one example, there is at least one aperture (14) or at least one recess in the case wall (3) in the region between the piston boss (6) and the skirt wall section (2).
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公开(公告)号：US20210404413A1
公开(公告)日：2021-12-30
申请号：US17290081
申请日：2018-11-02
发明人： Tsuyoshi HIGUCHI , Akinobu ITOU , Hayato HIRAYAMA
摘要： A sprayed coating for a sliding member of the present invention includes a ferrous alloy containing chromium (Cr).
The sprayed coating for the sliding member has the content rate of the chromium of 8 mass % or more, includes a structure that comprises crystal grains contained in the sprayed coating and having an average grain size of 3 μm or less, has a Vickers hardness of 300 Hv or more, and then is excellent at abrasion resistance.-
公开(公告)号：US20210293274A1
公开(公告)日：2021-09-23
申请号：US17262333
申请日：2019-06-19
摘要： A sliding member of the present invention includes a base material and a coating layer that is formed on the base material. The coating layer includes a particle aggregate that contains precipitation hardened copper alloy particles. The precipitation hardened copper alloy particles contain cobalt (Co) and silicon (Si) The sliding member has high coating strength and superior wear resistance.
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公开(公告)号：US11111851B2
公开(公告)日：2021-09-07
申请号：US16806103
申请日：2020-03-02
申请人： TENNECO INC.
发明人： Warran Boyd Lineton
IPC分类号： C23C28/00 , F02B77/02 , F02F7/00 , F02B77/11 , F02F3/10 , C23C4/11 , F01L3/04 , C23C4/073 , F02F1/00 , F02F1/24 , C23C4/134 , C23C4/129 , C23C4/02 , C23C4/131
摘要： A component for an engine is provided. The component includes a thermal barrier coating applied to a body portion formed of metal, such as steel or another ferrous or iron-based material. According to one embodiment, a bond layer of a metal is applied to the body portion, followed by a mixed layer of metal and ceramic with a gradient structure, and then optionally a top layer of metal. The thermal barrier coating can also include a ceramic layer between the mixed layer and top layer, or as the outermost layer. The ceramic includes at least one of ceria, ceria stabilized zirconia, yttria, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating can be applied by thermal spray. The thermal barrier coating preferably has a thickness less than 200 microns and a surface roughness Ra of not greater than 3 microns.
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公开(公告)号：US11046019B2
公开(公告)日：2021-06-29
申请号：US16024174
申请日：2018-06-29
发明人： Manabu Tateno
摘要： A heat-shielding film structure comprises a first and a second heat-shielding film. The first heat-shielding film is a heat-shielding film formed on a surface of a component that is formed from an Al alloy with an Al purity of less than 99.0% as a base material. The second heat-shielding film is a heat-shielding film formed on the surface of the first heat-shielding film. The second heat-shielding film is obtained by anodizing treatment of Al foil with an Al purity equal to or larger than 99.0%. The first heat-shielding film has a porous structure. The second heat-shielding film has a porous alumina on its surface. The first heat-shielding film and the porous alumina have a lower heat conductivity and a lower heat capacity per unit volume than the base material.
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公开(公告)号：US10926330B2
公开(公告)日：2021-02-23
申请号：US15880359
申请日：2018-01-25
申请人： Federal-Mogul LLC
发明人： Michael Weinenger
IPC分类号： B22F5/00 , B22F7/06 , F02F3/00 , F02F3/10 , F16J1/14 , B23K26/34 , B23P15/10 , B23K26/082 , B23K26/346 , B23K26/144 , B22F3/105 , B22F3/11 , B33Y10/00 , B33Y80/00 , B22F7/08 , F02F3/22 , B23K101/00 , B23K103/04 , B23K103/12
摘要： A steel piston with a bushing applied to pin bore surfaces by laser cladding or laser additive manufacturing is provided. The bushing is formed of metal, such as bronze, and metallurgically bonded to the steel of the piston. Thus, the bushing cannot fail by rotating relative to pin bore surfaces. The bushing has a porosity ranging from 0.05% to 5%, based on the total volume of the bushing, and a thickness ranging from 0.07 mm to 6 mm. Since the metal is applied directly to the steel by laser cladding or laser additive manufacturing, the overall size of the piston is reduced, compared to typical pistons with a separate steel backed bushing, and the possibility of bushing rotation is avoided. The bushing also provides scuffing resistance and increased unit load capacity of the pin bore.
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公开(公告)号：US10801439B2
公开(公告)日：2020-10-13
申请号：US16091148
申请日：2016-04-08
发明人： Frank Löfskog , Aurélien Tricoire
IPC分类号： F02F3/14 , C23C4/11 , C23C4/01 , F16J1/00 , F02F3/12 , F02F3/10 , F02B23/06 , C23C4/134 , C23C4/02 , C23C4/06
摘要： A piston for a cylinder for an internal combustion engine has a piston bowl surface adapted for facing a combustion chamber of the cylinder, the piston bowl surface being provided with a thermal barrier coating layer, wherein the thermal barrier coating layer is provided on a plurality of circumferentially spaced surface parts of the piston bowl surface. A method for producing a piston for a cylinder for an internal combustion engine includes the steps of providing a piston for a cylinder for an internal combustion engine, the piston having a piston bowl surface adapted for facing a combustion chamber of the cylinder, and providing the piston bowl surface with a thermal barrier coating layer, wherein the step of providing the thermal barrier coating layer is made on a plurality of circumferentially spaced surface parts of the piston bowl surface.
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公开(公告)号：US20200088128A1
公开(公告)日：2020-03-19
申请号：US16574470
申请日：2019-09-18
发明人： Naoyuki SUDA
摘要： A piston for an internal combustion engine has a plurality of recesses formed in a skirt including an upper, a lower, and a central portion. The recesses in the upper portion close to an upper boundary of the central portion have lower ends located upwardly at a given distance away from the upper boundary. The recesses in the central portion close to the upper boundary have upper ends located downwardly at the given distance away from the upper boundary. The recesses in the lower portion close to the lower boundary have upper ends located downwardly at the given distance away from the lower boundary. The recesses in the central portion closer to the lower boundary have lower ends located upwardly at the given distance away from the lower boundary. This enhances lubrication between the piston and an inner wall of a cylinder bore and reduces a friction loss of the piston.
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公开(公告)号：US10273902B2
公开(公告)日：2019-04-30
申请号：US15436966
申请日：2017-02-20
申请人： FEDERAL-MOGUL LLC
发明人： Norbert G. Schneider
IPC分类号： F02F3/00 , F02F3/10 , C23C4/11 , C23C4/126 , C23C4/134 , C23C4/02 , C04B35/48 , C04B35/486 , C04B35/622 , C23C4/06 , C23C4/08 , C23C28/00 , F02F3/12 , F02B77/02 , C23C4/12 , F02F3/26 , C23C4/129
摘要： A galleryless steel piston designed to improve thermal efficiency, fuel consumption, and performance of an engine is provided. The piston includes a steel body portion and a thermal barrier layer applied to an upper combustion surface and/or a ring belt to reduce the amount of heat transferred from a combustion chamber to the body portion. The thermal barrier layer has a thermal conductivity which is lower than a thermal conductivity of the steel body portion. The thermal barrier layer typically includes a ceramic material, for example ceria, ceria stabilized zirconia, and/or a mixture of ceria stabilized zirconia and yttria stabilized zirconia in an amount of 90 to 100 wt. %, based on the total weight of the ceramic material. The thermal barrier layer can also have a gradient structure which gradually transitions from 100 wt. % of a metal bond material to 100 wt. % of the ceramic material.
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公开(公告)号：US20190063604A1
公开(公告)日：2019-02-28
申请号：US16081163
申请日：2016-03-30
摘要： A piston in which a solid lubricant resin layer made of a resin containing a solid lubricant is formed at a skirt portion. A guide groove absent area where no guide groove is formed, which is provided in a predetermined range of the solid lubricant resin layer at a center portion in a width direction. The guide grooves directing from the both ends in the width direction of the guide groove absent area to both ends in the width direction of the skirt portion. The end portions of the guide grooves extended to end edges of the solid lubricant resin layer to form open ends. The solid lubricant resin layer and the guide grooves are formed at least at a thrust side skirt portion. The guide grooves are formed in a shape inclined upward from the guide groove absent area toward the end edges of the solid lubricant resin layer.
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