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公开(公告)号：EP3615784B1
公开(公告)日：2023-05-31
申请号：EP18721724.5
申请日：2018-04-24
发明人： UNGERMANN, Sven , HOPP, Georg , WEISS, Rainer
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公开(公告)号：EP2812553B1
公开(公告)日：2019-10-16
申请号：EP13705889.7
申请日：2013-02-08
申请人： Tenneco Inc.
发明人： AZEVEDO, Miguel , HAMPTON, Keith
IPC分类号： F02F3/18
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公开(公告)号：EP2864618A2
公开(公告)日：2015-04-29
申请号：EP13745565.5
申请日：2013-05-03
IPC分类号： F02F3/18
CPC分类号： F02F3/20 , F01P3/10 , F02B3/06 , F02F3/00 , F02F3/18 , F02F3/22 , F02F3/26 , F05C2201/021 , F05C2201/0448
摘要： The invention relates to a piston (10,) for an internal combustion engine, comprising a piston head (11) and a piston skirt (16), said piston head (11) having a peripheral annular part (15) and in the region of said annular part (15), a peripheral cooling channel (23). The piston skirt (16) comprises piston bores (17) provided with hub bores (18), which are arranged over the hub connections (19) on the underside (11a) of the piston head (11). Said piston hubs (17) are interconnected over the running surfaces (21, 22). According to the invention, the wall (23a) of the cooling channel (23) which extends in the region of the annular part (15) comprises an inclined portion and together with the central axis of the piston (M), forms an acute angle (a). At least one bore (24a, 24b, 24c, 24d) which is closed towards the outside is arranged between a running surface (21, 22) and a hub bore (18) such that the at least one bore (24a, 24b, 24c, 24d) leads into the cooling channel (23), and that the cooling channel (23) and the at least one bore (24a, 24b, 24c, 24d) contain a coolant (27) in the form of a metal or a metal alloy which have a low-melting point.
摘要翻译： 本发明涉及一种用于内燃机的活塞（10），其包括活塞头（11）和活塞裙（16），所述活塞头（11）具有周边环形部分（15）并且在 所述环形部分（15），外围冷却通道（23）。 活塞裙（16）包括设置有毂孔（18）的活塞孔（17），所述毂孔布置在活塞头（11）的下侧（11a）上的毂连接件（19）上方。 所述活塞毂（17）在运行表面（21,22）上相互连接。 根据本发明，在环形部分（15）的区域中延伸的冷却通道（23）的壁（23a）包括倾斜部分并且与活塞（M）的中心轴线一起形成锐角 （一个）。 在运行表面（21,22）和轮毂孔（18）之间布置有至少一个朝向外侧闭合的孔（24a，24b，24c，24d），使得所述至少一个孔（24a，24b，24c ，24d）通向冷却通道（23），并且冷却通道（23）和至少一个孔（24a，24b，24c，24d）包含金属或金属形式的冷却剂（27） 合金具有低熔点。
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5.发明公开
公开(公告)号：EP2864617A2
公开(公告)日：2015-04-29
申请号：EP13744418.8
申请日：2013-05-03
CPC分类号： F02F3/18 , F02F1/00 , F05C2201/021 , F05C2201/0448 , F05C2251/046
摘要： The invention relates to an assembly (100, 200) consisting of a piston (10, 110, 210) made of a steel-based material, and a crankcase (140, 240) made of an aluminum-based material, for an internal combustion engine. Said piston (10, 110, 210) comprises a piston head (11) and a piston skirt (16), said piston head (11) having a peripheral annular part (15) and in the region of said annular part (15), a peripheral cooling channel (23). The piston skirt (16) comprises piston bores (17) provided with hub bores (18), which are arranged over the hub connections (19) on the underside (11a) of the piston head (11). Said piston hubs (17) are interconnected over the running surfaces (21, 22). According to the invention, at least one bore (24a, 24b, 24c, 24d) which is closed towards the outside is arranged between a running surface (21, 22) and a hub bore (18) such that the at least one bore (24a, 24b, 24c, 24d) leads into the cooling channel (23), and that the cooling channel (23) and the at least one bore (24a, 24b, 24c, 24d) contain a coolant (127, 227) in the form of a metal or a metal alloy which have a low-melting point.
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公开(公告)号：EP2812553A1
公开(公告)日：2014-12-17
申请号：EP13705889.7
申请日：2013-02-08
发明人： AZEVEDO, Miguel , HAMPTON, Keith
IPC分类号： F02F3/18
摘要： A piston for an internal combustion engine is provided. The piston includes a body having a cylindrical outer surface with a ring belt region including an annular uppermost ring groove and a lower ring groove extending into the outer surface. A top land extends from the uppermost ring groove to an upper combustion surface. The body has a pair of pin bosses with pin bores aligned with one another along a pin bore axis. A first piston ring is disposed in the uppermost ring groove and a second piston ring is disposed in the lower ring groove. The body has an annular sealed cooling gallery with a cooling medium contained therein. The sealed cooling gallery is configured in substantial radial alignment between the first and second piston rings to provide optimal cooling to the ring belt region, top land and upper combustion surface.
摘要翻译： 提供一种用于内燃机的活塞。 活塞包括具有圆柱形外表面的主体，环形带区域包括环形最上环形槽和延伸到外表面的下环槽。 顶部区域从最上面的环形槽延伸到上部燃烧表面。 主体具有一对销销凸起，销销孔沿销孔轴线彼此对准。 第一活塞环设置在最上环形槽中，第二活塞环设置在下环槽中。 主体具有环形密封的冷却库，其中包含冷却介质。 密封冷却库被构造成在第一和第二活塞环之间实质上径向对准，以向环带区域，顶部区域和上部燃烧表面提供最佳的冷却。
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7.发明公开PISTON WITH BLOW-BY FEATURE AND METHOD OF PREVENTING CATASTROPHIC FAILURE TO AN INTERNAL COMBUSTION ENGINE 有权与窜功能和程序活塞以防止灾难性MALFUNCTION在内燃机
公开(公告)号：EP2499348A1
公开(公告)日：2012-09-19
申请号：EP10782100.1
申请日：2010-11-10
发明人： MATSUO, Eduardo, H. , WANG, Kai
CPC分类号： F01L3/24 , F01L21/04 , F01L2800/16 , F02B77/082 , F02F3/003 , F02F3/28
摘要： A piston and method is provided that inhibits the potential catastrophic damage to an internal combustion engine, thereby reducing the risk of costly damage to the engine. The piston includes a piston body having an upper combustion surface separated from an internal cooling chamber by a wall. The a pocket extends into the upper combustion surface to a closed bottom surface of the wall. A tubular member is disposed in the pocket. The tubular member extends upwardly from the upper surface. Should a valve head drop from its normal operating position, the valve head impacts the tubular member and forms a blow-by through passage extending from the upper combustion surface into the cooling chamber.
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公开(公告)号：EP1343961B1
公开(公告)日：2006-07-26
申请号：EP01953108.6
申请日：2001-06-16
申请人： MAHLE GMBH
CPC分类号： F02F3/0092 , F02B3/06 , F02B23/0603 , F02B23/0672 , F02B2023/0612 , F02B2275/14 , F02F3/0069 , F02F3/18 , F02F2200/04 , F05C2201/0448 , Y02T10/123 , Y02T10/125
摘要： The aim of the invention is to obtain, with constant or increasing output, a reduction in the compression height of a cooling duct piston (1) for a direct-injection diesel engine. To this end, the piston (1) is composed of at least two parts (23) that are soldered together. One of the parts is a piston base body (2), which is forged of steel and which is provided with a shaft (8), hubs (6) and with an annular part (9). The other part, which is made of steel or of a nickel-based material, contains a combustion recess (4) and at least a portion of the piston head (5). The piston base body (2) and the second part (3), together, form a cooling duct (11) that can be filled with oil.
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公开(公告)号：EP0302380A2
公开(公告)日：1989-02-08
申请号：EP88112135.4
申请日：1988-07-27
CPC分类号： F02F3/18 , F02F3/26 , F02F2001/008 , F02F2200/04 , F05C2201/021 , F05C2201/0448 , F05C2251/042
摘要： Die Erfindung betrifft ein zonenweise unterschiedlich wärmebeaufschlagtes Bauteil von Maschinen, Anlagen oder anderen Vorrichtungen, insbesondere Bauteil von Wärmekraftmaschinen. Um in diesen Bauteilen den Spannungsverlauf über der Temperatur in thermisch hochbeaufschlagten Teilen oder Bereichen dadurch günstiger zu gestalten, daß die angrenzenden kälteren Bereiche ihre Ausdehnung nicht reduzieren oder verhindern, ist im Werkstoff des Bauteils, beispielsweise eines Kolbens einer Verbrennungskraftmaschine, benachbart zu den Zonen hoher Wärmebeaufschlagung, mindestens ein abgeschlossener Hohlraum (3, 4) vorgesehen, der vollständig mit einem Material ausgefüllt ist, das einen höheren Wärmeausdehnungskoeffizienten hat als der ihn umschließende Werkstoff des Bauteils.
摘要翻译： 本发明涉及机器，设备或其他装置的区域方面不同热应力部件，特别是热力发动机部件。 从而在这些部件使得在热hochbeaufschlagten份或有利的是，相邻的较冷的区域不减少或防止它们的膨胀区域随温度的电压变化，是在部件的材料，例如内燃发动机的活塞，邻近高施加热的区域 设置至少一个封闭空腔（3,4），该封闭空腔（3,4）完全填充有比其周围材料具有更高热膨胀系数的材料。
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10.发明授权
公开(公告)号：EP2914834B1
公开(公告)日：2024-08-21
申请号：EP13789466.3
申请日：2013-11-04
IPC分类号： F02F3/18
CPC分类号： F02F3/18 , Y10T29/49249
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