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公开(公告)号：EP3390869A1
公开(公告)日：2018-10-24
申请号：EP17727140.0
申请日：2017-05-22
发明人： MITTLER, Richard , RUCH, Fabian
IPC分类号： F16J9/20
CPC分类号： F16J9/206
摘要： The invention relates to a compression piston ring (1), in particular a piston ring suitable as a second piston ring in a three-ring piston ring set, which piston ring has convex sections (Ax) and concave sections (Av) in alternation in the circumferential direction in a sliding surface region (BM) that is central with respect to the axial height, wherein the concave sections forms profile recesses in the convexly rounded sliding surface (2).
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公开(公告)号：EP3368800A1
公开(公告)日：2018-09-05
申请号：EP16794845.4
申请日：2016-10-28
申请人： Federal-Mogul LLC
CPC分类号： F02F3/0015 , F16J9/062 , F16J9/12 , F16J9/206
摘要： A piston for an internal combustion engine having an improved oil control ring is provided. The piston has a piston body providing an upper combustion surface and an annular outer wall depending therefrom. A ring belt region including a plurality of ring grooves is formed in the annular outer wall. A first compression ring is disposed in one of the ring grooves and the oil control ring is disposed in another of the ring grooves. The oil control ring has generally parallel, planar upper and lower surfaces, with the upper and lower surfaces having an annular groove recessed therein. A through opening can be formed to bring the annular grooves into fluid communication with one another. The annular grooves collect oil scraped from a cylinder wall and return oil to the crank sump and reduce the contact area between the oil control ring and the wall of the ring groove.
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公开(公告)号：EP3164625B1
公开(公告)日：2018-08-29
申请号：EP14771969.4
申请日：2014-07-04
申请人： Seal Engineering AS
CPC分类号： F16J15/3208 , F16J9/20 , F16J9/203 , F16J9/206 , F16J15/064
摘要： A wiper-seal assembly for a cylinder with a cylinder wall and with a relative movable rod/piston rod with a piston wall is arranged for mounting in a ring-shaped groove in a cylinder wall or a rod/piston rod wall in front of a sealing or a steering. The wiper-seal assembly includes a ring-shaped wiper with one or more wiper sealing lip portions against the opposite relatively moving cylinder wall or the rod/piston rod wall. The wiper is further arranged for fluid transport from a gap between the cylinder wall and the rod/piston rod wall outside the ring shaped groove through pressure releasing flow conduits and further to the gap between the cylinder wall and the piston rod wall outside and at the opposite side of the ring shaped groove, and where the wiper-seal assembly further includes one or more filters.
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公开(公告)号：EP3056775A1
公开(公告)日：2016-08-17
申请号：EP15839859.4
申请日：2015-03-30
申请人： TPR Co., Ltd.
发明人： FUJITA, Hironori , KAWANO, Kentaro
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： To provide a combination oil ring capable of reducing an oil consumption in a high-speed region even if an oil ring tension is reduced.
In a combination oil ring, a tip end part of an outer peripheral surface in an arbitrary longitudinal section of a segment is in an asymmetrical shape, 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, and the pair of segments are installed in the oil ring groove so that the respective outer periphery vertexes are located on the side distant from the engine combustion chamber.摘要翻译： 即使油环张力降低，也能够提供能够降低高速区域的油耗的组合油环。 在组合油环中，段的任意纵截面中的外周面的前端部为非对称形状，当通过节段宽度的中心的线为第一中间线时，长度为 在发动机燃烧室侧的位置与远离发动机燃烧室的一侧的位置之间的线段在距离外周顶点朝向节段径向内周侧的距离为3μm的位置处的轮廓曲线上 方向为L，线段L的中间线为第二中间线，第二中间线位于比第一中间线更靠近发动机燃烧室的一侧，该段的外周顶点为 位于第二中间线上，或位于比第二中间线更远离发动机燃烧室的一侧，并且该对段被安装在油环g 使得各个外周顶点位于远离发动机燃烧室的一侧。
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5.发明授权
公开(公告)号：EP2240711B1
公开(公告)日：2016-04-20
申请号：EP08869990.5
申请日：2008-12-22
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6.发明公开KOLBENRING FÜR DEN KOLBEN EINES VERBRENNUNGSMOTORS 有权KOLBENRINGFÜRDEN KOLBEN EINES VERBRENNUNGSMOTORS
公开(公告)号：EP2162648A1
公开(公告)日：2010-03-17
申请号：EP08758194.8
申请日：2008-06-13
IPC分类号： F16J9/20
CPC分类号： F16J9/206
摘要： The invention relates to a piston ring (1) for the piston of an internal combustion engine, comprising a circular, radially inner bezel (2), the width thereof reducing, on both sides of the ring stop (3), up to the side (4) of the piston ring (1) that is opposite the ring stop (3), in a symmetrical manner in relation to a radially situated axis (8) and runs through the ring stop (3), and the bezel on the lower side of the piston ring (1) is arranged away from the piston base. A good oil-scraping effect of the piston ring (1) is obtained over the entire periphery of the inner wall of the cylinder.
摘要翻译： 一种用于内燃机的活塞的活塞环，包括在活塞环的下侧上的环形径向内表圈，其宽度在环形止动件的两侧减小，直到活塞的侧面 环相对于径向定位的轴线以对称的方式相对于环形止动件延伸，并且穿过环形止动件，并且活塞环下侧的边框远离活塞底座布置。 在气缸的内壁的整个周边上获得了活塞环的良好的刮油效果。
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公开(公告)号：EP1660792A1
公开(公告)日：2006-05-31
申请号：EP04762747.6
申请日：2004-09-02
申请人： MAHLE GMBH
摘要： The invention relates to an oil scraper ring for pistons of internal combustion engines, said oil scraper ring comprising a disc (1) that is provided with parallel flanks and a bearing surface (h) having an asymmetrical crowned form with a vertex line (3) extending over the periphery of the disc. A bracing spring (4) arranged in a ring groove (7) of the piston and comprising a spring groove side (6) opposing the piston head and a spring groove side (5) facing the piston head presses the disc (1) radially against the cylinder wall (8). The aim of the invention is to achieve an improved oil scraping action compared to that of prior art, while reducing the friction and the abrasion of the bearing surface. To this end, at least one of the spring groove sides (5, 6) extends at an angle (ß) in relation to the piston axis (10) in such a way that it is radially outwardly inclined to the bracing spring end oriented towards the cylinder, the bearing surface (h) of the disc (1) being embodied in such a way that it corresponds to an almost worn end contour in the started engine state, and, when the oil scraper ring (1) is mounted in the piston, the vertex line (3) of the bearing surface (h) is oriented in the direction of the ring groove side (6) opposing the piston head.
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公开(公告)号：EP1184558B1
公开(公告)日：2005-08-17
申请号：EP00930969.1
申请日：2000-06-06
申请人： Zhu, Zhihong , Wang, Baodong
发明人： Zhu, Zhihong , Wang, Baodong
摘要： A piston ring assembly consists of an upper ring and a lower ring. Said upper ring and lower ring have a common axis, an outer toward common annular surface, and an inner toward common annular surface and mutual contact surfaces. Said two contact surfaces keep to contact with each other in a contact section which has radially an outer end and an inner end. Said two contact surfaces stretch radially oppositely from said outer end to form a first wedge space, the vertex of which being in the outer end, with said outer toward common annular surface. The vertex angle is about 10" - 1 DEG 30". The distance between said outer end and said outer toward common annular surface is greater than the distance between said inner end and said inner toward common annular surface. The present invention also includes a piston wherein said piston ring assembly is being used.
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公开(公告)号：EP0937216B1
公开(公告)日：2003-04-09
申请号：EP97936679.6
申请日：1997-07-30
申请人： Helpap, Hans
发明人： Helpap, Hans
IPC分类号： F16J9/06
摘要： This invention concerns a packing seal which is intended particularly for reciprocating piston engines and which, for example, can be placed in the groove (31) around the circumference of a piston (22) of a reciprocating engine. The packing seal comprises a first segment ring (1) which has at least two sealing segments (3) with locking segments (4) positioned between them in alternating order. These locking segments (4) and sealing segments (3) taper in opposing directions radially towards the inside and outside respectively in wedge-shaped form. Furthermore, the packing seal comprises at least one additional or second segment ring (20) which also has at least two sealing segments (23) with locking segments (24) positioned alternately between them. The sealing segments (23) and locking segments (24) both taper radially towards the inside. The locking segments (24) extend over a larger arc than the sealing segments (23). The sealing segments (23) of this second segment ring (20) overlay the locking segments (24) of the axially adjacent first segment ring (1) cited above. This additional segment ring (20) of the packing seal (10') is made and designed in such a way that its sealing segments (23) supported by a compressive force derived from the working pressure are reliably pressed against the seat to be sealed without any additional assistance. To prevent the sealing arrangement of the packing seal (10') from coming apart during operation due to rocking motion, a security device (40) is provided which borders a slot present in axial direction between the packing seal (10') and the groove (31) and diminishes this slot, preferably in dependence on the working pressure. This security device (40) can simultaneously diminish the radially-directed working pressure on the packing seal in the groove base (33).
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公开(公告)号：EP1122420A1
公开(公告)日：2001-08-08
申请号：EP00124494.6
申请日：2000-11-09
发明人： Esser, Peter-Klaus
摘要： Kolben-Kolbenring-System, wobei der insbesondere aus Aluminium bestehende Koben (1) zur Aufnahme von Kolbenringen (6,7,8) mit mehreren Nuten (2,3,4,5) versehen ist, dadurch gekennzeichnet, daß die dem Kolbenboden zugewandte Nut (2) axial höher als die sich daran anschließenden Nuten (3,4,5) ausgebildet ist, und daß unterhalb der axial höheren Nut (2) zur Aufnahme von einzelnen, zumindest teilweise federbestückten Stahlbandringen (6,7,8) geringer axialer Höhe mindestens drei weitere Nuten (3,4,5) angeordnet sind.
摘要翻译： 该系统具有铝活塞（1），其具有多个凹槽（2-5）以保持活塞环（6-8）。 最接近活塞底座的凹槽（2）的轴向轴向高于其它凹槽。 至少三个以上的凹槽（3-5）布置在轴向更高的凹槽下方，以保持具有较低轴向高度的单独的至少部分弹簧加载的钢带环（6-8）。 优选地，较短的槽具有小于0.6mm的轴向高度。
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