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公开(公告)号：US3796436A
公开(公告)日：1974-03-12
申请号：US3796436D
申请日：1972-10-06
发明人： KURIO N , MINEGISHI H
CPC分类号： F01C19/08
摘要： In a rotary piston internal combustion engine comprising a center housing having a trochoidal inner peripheral surface, side housings provided at both sides of said center housing, a three apexed rotary piston is provided through an eccentric shaft within a casing formed by said center and side housings. An oil seal device is disposed in an annular groove formed on a thrust surface of the rotary piston including an oil seal ring having an annular recess or an annular step on the rear portion thereof. A U-shaped elastic seal ring is disposed in said annular recess or step and has two lips slidably and sealingly contacting at least one radially facing surface of said annular recess, said annular step or said annular groove, and a spring is disposed between said oil seal ring and said U-shaped elastic seal ring for pressing said oil seal ring and said U-shaped elastic sealing in opposite axial directions.
摘要翻译： 在包括具有摆线内周面的中心壳体的旋转活塞内燃机中，设置在所述中心壳体的两侧的侧壳体，通过位于由所述中心壳体和侧壳体形成的壳体内的偏心轴设置三顶旋转活塞 。 油封装置设置在形成在旋转活塞的推力面的环形槽中，该环形槽包括在其后部具有环形凹部或环状台阶的油封环。 U形弹性密封环设置在所述环形凹部或台阶中，并且具有两个可滑动并密封地接触所述环形凹槽，所述环形台阶或所述环形凹槽的径向面向表面的两个凸缘，并且弹簧设置在所述油 密封环和所述U形弹性密封环，用于在相反的轴向上按压所述油封环和所述U形弹性密封。
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公开(公告)号：US3762010A
公开(公告)日：1973-10-02
申请号：US3762010D
申请日：1972-02-07
发明人： IIZUKA K
CPC分类号： B23P15/08 , F05C2225/04 , F16J9/26 , Y10S277/936 , Y10T29/49281
摘要： A piston ring with a highly wear-resistant sliding surface of tungsten-cobalt electrodeposit and a sliding ring of a sintered mixture of iron oxide and carbon powder.
摘要翻译： 具有钨钴电沉积的高耐磨滑动表面的活塞环和氧化铁和碳粉末的烧结混合物的滑环。
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公开(公告)号：US3677558A
公开(公告)日：1972-07-18
申请号：US3677558D
申请日：1971-02-11
发明人： SUGAHARA EISUKE
摘要： An oil stripping piston employed on an internal combustion engine, especially aimed at elevated contact pressure and drastic reduction of lubrication oil consumption, on which a hardened surface is provided either on the top or bottom rubbing surface of the oil stripping piston ring and on the back of said oil stripping piston ring. An expander is mounted in the position selected for even distribution of rubbing wear of the hardened surface and the base material of the piston ring for maintaining a constant wear step between the said two rubbing surfaces.
摘要翻译： 在内燃机上使用的油剥离活塞，特别是针对提高的接触压力和大大降低润滑油消耗量，在该脱油活塞上，在脱油活塞环的顶部或底部摩擦表面上以及背面 的所述剥油活塞环。 膨胀机被安装在选择用于均匀分布硬化表面和活塞环的基材的摩擦磨损的位置，以保持所述两个摩擦表面之间的恒定的磨损步骤。
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公开(公告)号：US3650537A
公开(公告)日：1972-03-21
申请号：US3650537D
申请日：1970-10-28
发明人： SUGAHARA EISUKE
CPC分类号： F16J9/26
摘要： An oil ring of the one piece type has a chrome plated outer edge periphery, its upper and lower sides are inclined radially outwardly, and an expander is attached to the back thereof having resiliency in the radial direction.
摘要翻译： 一体式的油环具有镀铬的外边缘周边，其上侧和下侧径向向外倾斜，并且在其背面附接有在径向方向上具有弹性的膨胀器。
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公开(公告)号：US3615098A
公开(公告)日：1971-10-26
申请号：US3615098D
申请日：1970-03-26
发明人： SUGAHARA EISUKE
摘要： AN OIL SCRAPING PISTON-RING ASSEMBLY WHICH HAS ITS PISTON-RING INTERNAL SURFACE DISPOSED PREPENDICULAR TO THE UPPER OR LOWER SURFACE THEREOF OR INCLINED UPWARDLY OR DOWNWARDLY. A COMPRESSION ELEMENT OF STEEL STRIP MATERIAL HAS A PLURALITY OF OIL PASING SLITS AND IS FORMED INTO A RING HAVING A CROSS-SECTIONAL CONFIGURATION OF EITHER V OR L SHAPE. THE COMPRESSION ELEMENT HAS TWO PORTIONS, ONE RISING VERTICALLY OR OBLIQUELY AND THE OTHER EXTENDING OBLIQUELY OUTWARDLY OR HORIZONTALLY OUTWARDLY. WHEN THE PISTON-RING IS ASSEMBLED WITH THE COMPRESSION ELEMENT AND IS INSERTED IN A PISTON GROOVE, THE COMPRESSIVE FORCES
BETWEEN THE SLIDING SURFACE OF THE OIL SCRAPING PISTONRING AND THE INSIDE SURFACE OF THE CYLINDER AND ALSO BETWEEN THE UPPER AND LOWER SURFACE OF THE PISTON GROOVE AND THE CORRESPONDING SURFACE OF THE PISTON-RING ARE GREATLY STRENGTHENED AND THE LEAKAGE OF THE LUBRICATING OIL THERETHROUGH INTO THE COMBUSTION CHAMBER IS SUBSTANTIALLY DECREASED.-
公开(公告)号：US11047479B2
公开(公告)日：2021-06-29
申请号：US16685352
申请日：2019-11-15
摘要： A method for producing a piston ring for a cylinder that moves in a sliding direction includes providing a piston ring base material having an upper surface, a lower surface and an outer circumferential surface having a first recess between the upper surface and the lower surface, forming a hard film in the first recess and on a cylindrical surface at a predetermined thickness, and removing, by performing a polishing process on the sliding surface, the hard film formed on the cylindrical surface and a part of the piston ring base material disposed adjacent to the removed hard film, to form a second recess. The second recess is formed by removing an area of the removed part of the piston ring base material as a result of polishing the sliding surface due to a difference in the hardness of the hard film and the piston ring base material.
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公开(公告)号：US20200325844A1
公开(公告)日：2020-10-15
申请号：US16305657
申请日：2017-05-30
发明人： Mitsuru URABE , Hirokazu MURATA , Kazuhiko KANNO , Jyuta TASE , Kazumi MOROI
摘要： In a sliding structure for an internal combustion, a cylinder has recesses in a stroke center region. Piston rings have inclined surfaces on an outer circumferential surface, and a lubricating oil flows between the inner wall surface and the outer circumferential surface that relatively move via the inclined surfaces. At any RPM equal to or greater than at idle, a center friction coefficient at the stroke center region through which the piston rings pass at the highest speed is less than a center friction coefficient when no recesses are formed in the stroke center region. Contrarily, at the RPM, an outside friction coefficient when the piston rings pass through a region outside the stroke center region is less than an outside friction coefficient when the recesses are formed in the outside region. As a result, further improved low fuel efficiency is achieved for the dimple liner technique.
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公开(公告)号：US10514097B2
公开(公告)日：2019-12-24
申请号：US15672942
申请日：2017-08-09
摘要： A method for producing a piston ring for a cylinder that moves in a sliding direction includes providing a piston ring base material having an upper surface, a lower surface and an outer circumferential surface having a first recess between the upper surface and the lower surface, forming a hard film in the first recess and on a cylindrical surface at a predetermined thickness, and removing, by performing a polishing process on the sliding surface, the hard film formed on the cylindrical surface and a part of the piston ring base material disposed adjacent to the removed hard film, to form a second recess. The second recess is formed by removing an area of the removed part of the piston ring base material as a result of polishing the sliding surface due to a difference in the hardness of the hard film and the piston ring base material.
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公开(公告)号：US10344860B2
公开(公告)日：2019-07-09
申请号：US14911757
申请日：2014-09-08
发明人： Tsugane Hirase , Hiromichi Yokokawa , Kazuhiro Fujimura , Junpei Ogawa , Takaaki Kondo , Tomonori Miyazawa , Toyoki Iguchi , Takuma Suzuki
IPC分类号： B32B15/00 , F16J9/26 , C21D9/40 , C22C38/00 , C22C38/42 , F02F5/00 , C21D1/18 , C21D6/00 , C22C38/02 , C22C38/04 , C22C38/06 , F16J9/28
摘要： There is provided a highly heat conductive piston ring for an internal combustion engine capable of exhibiting a gas seal function and a heat transfer function for a long period of time in a stable manner when used in an automobile gasoline engine having a high compression ratio. The highly heat conductive piston ring for an internal combustion engine is a piston ring for an internal combustion engine having an Mn—Cr steel as a base material, the Mn—Cr steel including C in the range of from 0.52 to 0.65 mass %, Si in the range of from 0.15 to 0.35 mass %, Mn in the range of from 0.60 to 1.00 mass %, Cr in the range of from 0.60 to 1.00 mass %, P in the range of 0.04 mass % or less, S in the range of 0.04 mass % or less, a slight amount of components (total content of Al, Ni, and Cu) in the range of from 0.05 to 3.0 mass %, and a remnant being Fe and unavoidable impurities.
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公开(公告)号：US10330198B2
公开(公告)日：2019-06-25
申请号：US16015987
申请日：2018-06-22
摘要： A multi-piece oil ring includes an oil ring main member in which two rails are connected together by a columnar part and which has a roughly I-shaped cross section; and a coil expander disposed in an inner circumferential groove formed on the inner circumferential surface of the columnar. Each rail in the oil ring main member possesses a sliding section protuberance whose tip possesses a jutting portion. The axial length of the jutting portion is 0.02-0.18 mm. The change rate of the axial length of the individual jutting portion is in the range of 0 to 80% at least in a region of from its sliding surface to be faced to a cylinder, which is positioned at the tip of the jutting portion, to a position of 0.03 mm away from the aforementioned sliding surface in the radial direction of the oil ring main member.
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