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公开(公告)号：US11674595B2
公开(公告)日：2023-06-13
申请号：US17247493
申请日：2020-12-14
申请人： Caterpillar Inc.
发明人： Adam Joseph Clute
摘要： A scraper ring for a piston includes a top surface, a bottom surface, an inner surface, and an outer surface. The top surface has a first planar portion and a first angled portion. The bottom surface has a second planar portion and a second angled portion. The second angled portion is configured to slidably contact the first angled portion to adjust a diameter of the scraper ring. The inner surface connects the top surface to the bottom surface. The outer surface is opposite to the top surface and is configured to form 360 degrees of contact with a wall of a cylinder to substantially limit an amount of oil entering a combustion chamber of the cylinder.
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公开(公告)号：US20180038484A1
公开(公告)日：2018-02-08
申请号：US15725786
申请日：2017-10-05
发明人： Naokazu KAWASE , Hajime NAKAGAWA
IPC分类号： F16J9/20
摘要： Provided is an oil ring (13) for a piston assembly that can minimize the frictional resistance without impairing the oil control function such as the scraping of lubricating oil from the cylinder wall surface by the oil ring. The oil ring consists of an upper side rail (16), a lower side rail (17) and an annular expander (18) interposed between the two side rails, and is received in an oil ring groove (8) with a prescribed vertical clearance (20) that permits tilting of the side rails. An outer peripheral surface (16E, 17E) of each side rail is provided with a radially inward slant. Therefore, during the upward stroke of the piston, the upper side rail tilts in the radially outward direction so that the effective slant angle of the outer peripheral surface of the upper side ring is adjusted to an optimum value.
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公开(公告)号：US09784369B2
公开(公告)日：2017-10-10
申请号：US15034657
申请日：2015-03-30
申请人： TPR CO., LTD.
发明人： Hironori Fujita , Kentaro Kawano
CPC分类号： F16J9/203 , C23C14/0611 , C23C14/0641 , C23C14/325 , F02F5/00 , F16J9/06 , F16J9/064 , F16J9/066 , F16J9/067 , F16J9/068 , F16J9/20 , F16J9/206 , F16J9/26
摘要： In a combination oil ring, when a line passing through a center of a segment width is a first intermediate line, a length of a line segment between a position on an engine combustion chamber side and a position on a side distant from the engine combustion chamber on a contour curve at a position at a distance of 3 μm from an outer peripheral vertex toward an inner peripheral side in a segment radial direction is L, and an intermediate line of the line segment L is a second intermediate line, the second intermediate line is located on the side more distant from the engine combustion chamber than the first intermediate line, and the outer periphery vertex of the segment is located on the second intermediate line or on the side more distant from the engine combustion chamber than the second intermediate line.
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公开(公告)号：US20170184198A1
公开(公告)日：2017-06-29
申请号：US15334362
申请日：2016-10-26
发明人： Naokazu Kawase , Hajime Nakagawa
IPC分类号： F16J9/20
摘要： Provided is an oil ring (13) that can minimize the frictional resistance without impairing the oil control function such as the scraping of lubricating oil from the cylinder wall surface by the oil ring. The oil ring consists of an upper side rail (16), a lower side rail (17) and an annular expander (18) interposed between the two side rails, and is received in an oil ring groove (8) with a prescribed vertical clearance (20) that permits tilting of the side rails. An outer peripheral surface (16E, 17E) of each side rail is provided with a radially inward slant. Therefore, during the upward stroke of the piston, the upper side rail tilts in the radially outward direction so that the effective slant angle of the outer peripheral surface of the upper side ring is adjusted to an optimum value.
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公开(公告)号：US20170175893A1
公开(公告)日：2017-06-22
申请号：US15034657
申请日：2015-03-30
申请人： TPR CO., LTD.
发明人： Hironori FUJITA , Kentaro KAWANO
CPC分类号： F16J9/203 , C23C14/0611 , C23C14/0641 , C23C14/325 , F02F5/00 , F16J9/06 , F16J9/064 , F16J9/066 , F16J9/067 , F16J9/068 , F16J9/20 , F16J9/206 , F16J9/26
摘要： In a combination oil ring, when a line passing through a center of a segment width is a first intermediate line, a length of a line segment between a position on an engine combustion chamber side and a position on a side distant from the engine combustion chamber on a contour curve at a position at a distance of 3 μm from an outer peripheral vertex toward an inner peripheral side in a segment radial direction is L, and an intermediate line of the line segment L is a second intermediate line, the second intermediate line is located on the side more distant from the engine combustion chamber than the first intermediate line, and the outer periphery vertex of the segment is located on the second intermediate line or on the side more distant from the engine combustion chamber than the second intermediate line.
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公开(公告)号：US20150292621A1
公开(公告)日：2015-10-15
申请号：US14439521
申请日：2013-10-31
发明人： André Ferrarese , Rafael A. Bruno , Rudolf Huegel
摘要： A single-piece oil control ring for a piston may include a body having at least one upper portion and at least one lower portion each facing towards a cylinder wall of an internal combustion engine. At least one of the upper portion and the lower portion may respectively define a first surface extending substantially perpendicular to the body and a receding second surface extending from the first surface substantially at an incline. The first surface may protrude towards the cylinder wall in relation to the second surface. The first surface may have a first area of contact with the cylinder wall, and at least 95% of the first area may contact the cylinder wall.
摘要翻译： 用于活塞的单件油控制环可以包括具有至少一个上部部分和至少一个各自朝向内燃机的气缸壁的下部的主体。 上部和下部中的至少一个可以分别限定基本上垂直于主体延伸的第一表面和从第一表面基本上以倾斜延伸的后退第二表面。 第一表面可相对于第二表面朝向圆筒壁突出。 第一表面可以具有与气缸壁接触的第一区域，并且第一区域的至少95％可接触气缸壁。
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公开(公告)号：US20150130143A1
公开(公告)日：2015-05-14
申请号：US14401946
申请日：2013-04-25
发明人： Klaus Meyer , Dirk Baerenreuter
摘要： An oil scraper piston ring and a method for producing it in which a base body is provided with a running surface profile by machining the radially outer circumferential surface thereof, the running surface profile including two running surface lands and an interposed groove, wherein the running surface profile corresponds to that of the finished oil scraper piston ring, and on the groove side, seen in the circumferential direction, drainage holes are introduced into the groove base, at least the running surface lands are provided with a wear-resistant PVD, DLC or TaC layer and, if needed, the wear-resistant layer is subjected to a polishing, honing or lapping operation.
摘要翻译： 一种刮油活塞环及其制造方法，其特征在于，通过对其径向外周面进行机械加工而使基体具有行进面轮廓，所述行驶面轮廓包括两个行进台面和插槽，其特征在于， 轮廓对应于成品油刮板活塞环的轮廓，并且在沿圆周方向观察的槽侧，排水孔被引入槽基底中，至少在跑道面上设有耐磨PVD，DLC或 TaC层，如果需要，对耐磨层进行抛光，珩磨或研磨操作。
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8.发明申请公开(公告)号：US20140311437A1
公开(公告)日：2014-10-23
申请号：US13996712
申请日：2011-12-21
申请人： Daniel Lopez , Ricardo Alves
发明人： Daniel Lopez , Ricardo Alves
IPC分类号： B23P15/06
CPC分类号： B23P15/06 , F16J9/206 , F16J9/26 , Y10T29/49274 , Y10T29/49281 , Y10T29/49284
摘要： The invention relates to a method for producing a piston ring (30, 130, 230) for a piston (10) of an internal combustion engine, comprising a ring back (31), an upper ring flank (32), a lower ring flank (33), and a running surface (42), and the method comprising the following method steps: (a) preparing a ring blank (30′) with a ring back (31′), an upper ring flank (32′), a lower ring flank (33′), and an outer lateral face (34′), (b) shaping an asymmetrical convex contour (35) along the outer lateral face (34′) and shaping a radially outward-extending protrusion (36) in the outer lateral surface (34′) in the region of the lower ring flank (33′), (c) coating the outer lateral surface (34′) with a coating material, (d) removing the protrusion (36), thereby exposing the material of the ring blank (30′) in the shape of a circumferential surface (41) which blends into the coating (39), and forming an oil scraper edge (40) between the circumferential surface (41) and the lower ring flank (33′), and (e) post and/or final processing of the coated ring blank (30′) to obtain a finished piston ring (30, 130, 230).
摘要翻译： 本发明涉及一种用于生产用于内燃机的活塞（10）的活塞环（30,130,230）的方法，该活塞环包括环形背部（31），上环侧面（32），下环侧面 （33）和运行表面（42），并且该方法包括以下方法步骤：（a）制备具有环形背面（31'）的环形坯件（30'），上环形侧面（32'）， 下侧环形侧面（33'）和外侧面（34'），（b）沿着外侧面（34'）成形不对称的凸形轮廓（35）并使径向向外延伸的突起（36）成形， 在下侧环（33'）区域的外侧表面（34'）中，（c）用涂料涂覆外侧表面（34'），（d）移除突起（36），从而 将环坯料（30'）的材料暴露于共混到涂层（39）中的圆周表面（41）的形状，并且在圆周表面（41）和 下环（33'），和（e）涂覆环坯（30'）的后和/或最终加工以获得成品活塞环（30,130,230）。
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公开(公告)号：US20130181411A1
公开(公告)日：2013-07-18
申请号：US13823040
申请日：2011-09-02
申请人： Peter-Klaus Esser
发明人： Peter-Klaus Esser
CPC分类号： B23P15/06 , F16J9/20 , F16J9/206 , F16J9/26 , Y10T29/49281
摘要： A piston ring, is produced by providing, on the radially outer circumferential surface of a ring-shaped metallic main body, a recess, the metallic main body having a radially outer circumferential surface, a radially inner circumferential surface, and flank surfaces interposed therebetween providing the recess with a contour that deviates from a cylindrical shape at least on the bottom of the recess, providing at least one wear-resistant layer on the outer circumferential surface, including the recess, and at least partially removing an area of the at least one wear-resistant layer on the outer circumferential surface and including an area corresponding to a scraping edge, thereby forming a land having a predefinable width.
摘要翻译： 一种活塞环，通过在环状金属主体的径向外周面上设置有凹部，该金属主体具有径向外周面，径向内周面和插入其间的侧面， 所述凹部至少在所述凹部的底部上具有偏离圆柱形的轮廓，在所述外周表面上包括所述凹部提供至少一个耐磨层，并且至少部分地移除所述至少一个 耐磨层，并且包括与刮刃对应的区域，由此形成具有预定义宽度的区域。
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10.发明授权公开(公告)号：US08307805B2
公开(公告)日：2012-11-13
申请号：US12823412
申请日：2010-06-25
申请人： Peter Hofbauer
发明人： Peter Hofbauer
CPC分类号： F16J9/206
摘要： A lubrication system for an internal combustion engine is described that includes a scraper ring with an oil collector located immediately beneath an upper piston ring on a reciprocating piston. The scraper ring serves to deposit oil onto the inner surface of the upper cylinder liner near the combustion chamber in reaction to the decelerating movement of the piston as the piston approaches TDC. The oil scraper collects oil in a collection groove as the piston travels along the lower portion of the cylinder and carries inertia onto the cylinder liner.
摘要翻译： 描述了一种用于内燃机的润滑系统，其包括刮刀环，其具有位于往复活塞上的上活塞环正下方的集油器。 当活塞接近TDC时，刮刀环用于将油附着在靠近燃烧室的上汽缸衬里的内表面上，以反应活塞的减速运动。 当活塞沿着气缸的下部行进时，刮油器将油收集在收集槽中，并将惯性传递到气缸套上。
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