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91. 发明申请

US20190078493A1 METHOD AND SYSTEM FOR DIAGNOSING FAILURE OF PISTON COOLING DEVICE 审中-公开
公开(公告)号：US20190078493A1
公开(公告)日：2019-03-14
申请号：US15836607
申请日：2017-12-08
申请人： Hyundai Motor Company , Kia Motors Corporation
发明人： Jin-Sung Kim , Kwang-Seok Choi
IPC分类号： F01P3/08 , F02F3/16 , F02D35/02
CPC分类号： F01P3/08 , F01M1/02 , F01M1/08 , F01M1/18 , F01M2001/0246 , F01P2031/20 , F02D35/02 , F02D41/22 , F02D41/221 , F02D2041/227 , F02D2200/021 , F02D2250/26 , F02F3/16
摘要： A method for diagnosing a failure of a solenoid valve of a piston cooling device is provided. The method includes varying a pressure in a variable proportional control oil pump when an opening command or a closing command of the solenoid valve is sent to inject oil from the piston cooling device. Additionally, a variation of an oil pressure in an oil flow path of the piston cooling device is monitoring according to a variation of the pressure in the variable proportional control oil pump and whether a failure occurs at the solenoid valve of the piston cooling device is then determined.

92. 发明授权

US09869269B2 Piston for an internal combustion engine 有权
公开(公告)号：US09869269B2
公开(公告)日：2018-01-16
申请号：US14894902
申请日：2014-05-28
申请人： MAHLE INTERNATIONAL GMBH
发明人： Rainer Scharp , Peter Kemnitz
IPC分类号： F02F3/00 , B23P15/10 , F01P1/04 , F02F3/22 , F02F3/16 , F02F3/02 , F01P3/08 , F02F3/20
CPC分类号： F02F3/22 , F01P3/08 , F02F3/00 , F02F3/02 , F02F3/16 , F02F3/20
摘要： A piston for an internal combustion engine may include a piston head and a piston skirt. The piston head may include a piston crown, an encircling fire land, an encircling ring belt having a plurality of ring grooves and an encircling cooling duct disposed radially inwards from the ring belt. The cooling duct may be open in an axial direction away from the fire land and may be at least partially closed via a closure element. The cooling duct may have a cooling duct base and a cooling duct ceiling. The closure element may be arranged on the piston head to define the cooling duct base in a position above a lowermost ring groove of the plurality of ring grooves.

93. 发明申请

US20170321628A1 MONOLITHIC GALLERYLESS PISTON AND METHOD OF CONSTRUCTION THEREOF 审中-公开
公开(公告)号：US20170321628A1
公开(公告)日：2017-11-09
申请号：US15657018
申请日：2017-07-21
申请人： Federal-Mogul LLC
发明人： Jeff Riffe , Michael Weinenger
IPC分类号： F02F3/16 , F02F3/00 , B23P15/10
CPC分类号： F02F3/16 , B23P15/10 , F02F3/00 , F02F3/0069 , F02F3/0092 , F02F2003/0007 , Y10T29/49265
摘要： A galleryless piston for an internal combustion engine and method of construction thereof are provided. The piston has a monolithic piston body extending along a central longitudinal axis. The piston body has an upper wall forming an upper combustion surface with first and second portions, with the first portion extending annularly along an outer periphery of the upper wall and the second portion forming a combustion bowl. The upper wall has an undercrown surface on an underside of the combustion bowl directly opposite the second portion of the upper combustion surface. The undercrown surface has an openly exposed surface area, as viewed looking along the central longitudinal axis, thereby providing an expansive area against which oil being splashed or sprayed can freely contact to cool the piston.

94. 发明授权

US09810174B2 Constructions for piston thermal management 有权
公开(公告)号：US09810174B2
公开(公告)日：2017-11-07
申请号：US13655377
申请日：2012-10-18
申请人： Achates Power, Inc.
发明人： Michael H. Wahl , Ryan G. MacKenzie , James U. Lemke
IPC分类号： F01B7/12 , F02F3/16 , F02F3/22 , F02B25/08 , F02B75/28 , F02B75/02 , F01B7/14 , F01M1/06
CPC分类号： F02F3/16 , F01B7/14 , F01M2001/066 , F02B25/08 , F02B75/28 , F02B75/282 , F02B2075/025 , F02B2075/027 , F02F3/22
摘要： A piston construction with an end surface is equipped with a pattern of insulating cavities embedded in an upper end of the piston, between the end surface and interior portions of the piston that are cooled by circulating liquid coolant.

95. 发明授权

US09797337B2 Oil-cooled piston for an internal combustion engine 有权
公开(公告)号：US09797337B2
公开(公告)日：2017-10-24
申请号：US14795966
申请日：2015-07-10
申请人： MAHLE International GmbH
发明人： Giang The Nguyen
IPC分类号： F02F3/00 , F02F3/16 , F16J1/09 , F01P3/00 , F01P3/10 , F02F3/22
CPC分类号： F02F3/0069 , F01P3/10 , F02F3/22 , F16J1/09
摘要： A piston for an internal combustion engine. The piston comprises a piston head and an articulated piston skirt. The piston head includes a crown and pin bosses depending from the crown. The piston skirt includes opposed thrust walls, opposed sidewalls, and a transverse bridge extending diametrically across the piston skirt, between the opposed sidewalls. A circumferential cooling gallery is encompassed within an outer circumferential ring belt section of the crown and is in fluid communication with a central cooling passage that extends between the crown and the piston skirt. The central cooling passage extends diametrically across the piston skirt, beneath at least a portion of the ring belt section and beneath at least a portion of an inner combustion bowl section of the crown.

96. 发明授权

US09670871B2 Two-part steel piston for internal combustion engines 有权
公开(公告)号：US09670871B2
公开(公告)日：2017-06-06
申请号：US14348330
申请日：2012-09-14
申请人： Emmerich Ottliczky , Franz Ratzky
发明人： Emmerich Ottliczky , Franz Ratzky
IPC分类号： F02F3/00 , F02F3/16 , F02F3/22 , F16J1/09
CPC分类号： F02F3/16 , F02F3/22 , F02F2003/0061 , F02F2200/00 , F02F2200/04 , F16J1/09 , Y10T29/49252
摘要： A method for producing a piston for an internal combustion engine, which piston has at least one cooling channel and is produced from at least one upper part and one lower part. The cooling channel of the piston is formed of the upper part and the lower part where the upper part and the lower part of the piston are each produced by means of a forging process At least one rib-like element, in particular, at least one rib, is additionally forged during the forging of the upper part in an area of the cooling channel and/or at least one rib-like element, in particular, at least one rib, is additionally forged during the forging of the lower part in an area of the cooling channel. Two alternative production methods and to a piston for an internal combustion engine are disclosed.

97. 发明申请

US20170009699A1 OIL-COOLED PISTON FOR AN INTERNAL COMBUSTION ENGINE 有权
标题翻译：用于内燃机的油冷却活塞
公开(公告)号：US20170009699A1
公开(公告)日：2017-01-12
申请号：US14795966
申请日：2015-07-10
申请人： MAHLE International GmbH
发明人： Giang The Nguyen
IPC分类号： F02F3/00 , F02F3/16
CPC分类号： F02F3/0069 , F01P3/10 , F02F3/22 , F16J1/09
摘要： A piston for an internal combustion engine. The piston comprises a piston head and an articulated piston skirt. The piston head includes a crown and pin bosses depending from the crown. The piston skirt includes opposed thrust walls, opposed sidewalls, and a transverse bridge extending diametrically across the piston skirt, between the opposed sidewalls. A circumferential cooling gallery is encompassed within an outer circumferential ring belt section of the crown and is in fluid communication with a central cooling passage that extends between the crown and the piston skirt. The central cooling passage extends diametrically across the piston skirt, beneath at least a portion of the ring belt section and beneath at least a portion of an inner combustion bowl section of the crown.
摘要翻译：内燃机活塞。活塞包括活塞头和铰接活塞裙。活塞头包括从冠部悬挂的表冠和销凸起。活塞裙部包括相对的推力壁，相对的侧壁和横向桥梁，该横向桥梁在相对的侧壁之间沿径向延伸穿过活塞裙部。周向冷却槽被包围在冠部的外周环形带部分内，并且与在冠部和活塞裙部之间延伸的中央冷却通道流体连通。中央冷却通道沿径向延伸穿过活塞裙部，位于环形带部分的至少一部分下方，并且位于冠部的内部燃烧碗部分的至少一部分的下方。

98. 发明授权

US09068531B2 One-piece piston with improved combustion bowl rim region and method of manufacture 有权
标题翻译：具有改进的燃烧碗边缘区域的一体式活塞和制造方法
公开(公告)号：US09068531B2
公开(公告)日：2015-06-30
申请号：US13708656
申请日：2012-12-07
申请人： Federal-Mogul Corporation
发明人： Florin Muscas , Michael Weinenger
IPC分类号： F02F3/26 , F02F3/16 , B23P15/10 , F02F3/00 , F02F3/22
CPC分类号： F02F3/26 , B23P15/10 , F02F3/003 , F02F3/22 , Y10T29/49249
摘要： A piston for an internal combustion engine and method of construction thereof is provided. The piston includes a piston body having an upper combustion surface with a combustion bowl depending from the upper combustion surface. The piston body has a ring belt region configured for receipt of at least one piston ring adjacent the upper combustion surface. A cooling gallery is configured in radial alignment with the ring belt region. An annular combustion bowl rim region extends between the upper combustion surface and the combustion bowl, and a bonded seam extends from the combustion bowl rim region radially outwardly to the cooling gallery. The bonded seam has material properties exhibiting an enhanced ability to withstand the extreme temperature, pressure, stress and highly corrosive and erosive effects of the combustion gases relative to the surrounding material of the piston body.
摘要翻译：提供了一种内燃机的活塞及其构造方法。活塞包括具有上燃烧表面的活塞体，燃烧碗从上燃烧表面悬垂。活塞体具有环形带区域，该环形带区域构造成用于接收与上部燃烧表面相邻的至少一个活塞环。冷却库被配置成与环带区域径向对准。环形燃烧碗边缘区域在上燃烧表面和燃烧碗之间延伸，并且粘合的接缝从燃烧碗边缘区域径向向外延伸到冷却槽。粘合缝具有表现出增强的耐受燃烧气体相对于活塞体的周围材料的极端温度，压力，应力和高腐蚀性和侵蚀作用的能力的材料性质。

99. 发明授权

US09068529B2 Piston for an internal combustion engine 有权
标题翻译：内燃机活塞
公开(公告)号：US09068529B2
公开(公告)日：2015-06-30
申请号：US14360404
申请日：2012-11-26
申请人： MAHLE International GmbH
发明人： Timo Linke
IPC分类号： F02F3/00 , F02F3/16 , F02F3/20 , F02F3/22
CPC分类号： F02F3/16 , F02F3/20 , F02F3/22 , F02F3/225
摘要： The invention relates to a piston (10, 110) for an internal combustion engine. Said piston comprises a piston head (11), a piston skirt (12) and a peripheral recess (24) between the piston head (11) and the piston skirt (12), an annular peripheral cooling channel (17), which is open towards the bottom and which is closed by a closing element (18), being provided in the piston head (11), and the piston skirt (12) having fillets (21) which are connected to the bottom of the piston skirt (11) and interconnected via bearing surfaces (23, 123). According to the invention, at least one projection (26, 126) is formed in the region of a free end face (25, 125) of the bearing surfaces (23, 123) and extends radially into a region of the cooling channel (17), said projection matching an opening (19) in the closing element (18) of the cooling channel (17).
摘要翻译：本发明涉及一种用于内燃机的活塞（10,110）。所述活塞在活塞头（11）和活塞裙（12）之间包括活塞头（11），活塞裙（12）和周边凹部（24），环形周边冷却通道（17）朝向底部并且由闭合元件（18）封闭，设置在活塞头部（11）中，并且活塞裙部（12）具有连接到活塞裙部（11）底部的圆角（21）并通过支承表面（23,123）相互连接。根据本发明，至少一个突起（26,126）形成在支承表面（23,123）的自由端面（25,125）的区域中，并且径向延伸到冷却通道（17）的区域），所述突起与冷却通道（17）的关闭元件（18）中的开口（19）相匹配。

100. 发明申请

US20140318492A1 PISTON FOR AN INTERNAL COMBUSTION ENGINE AND METHOD FOR PRODUCING SAME 审中-公开
标题翻译：内燃机用活塞及其生产方法
公开(公告)号：US20140318492A1
公开(公告)日：2014-10-30
申请号：US14360406
申请日：2012-11-26
申请人： MAHLE International GmbH
发明人： Timo Linke , Rainer Scharp
IPC分类号： F02F3/16
CPC分类号： F02F3/16 , F02F3/003 , F02F3/22 , F02F2003/0061 , Y10T29/49249
摘要： A piston for an internal combustion engine has a piston head having a piston crown, and a piston skirt, a first part of the piston head being formed by a piston base, and a second part of the piston head being formed by a piston head element, and a peripheral cooling channel being provided in the piston head. At least one heat-conducting element is arranged in the cooling channel and is connected to the piston base and the piston head element via an external seam and an internal seam which extend from the piston crown to the cooling channel. The invention further relates to a method for producing the piston.
摘要翻译：一种用于内燃机的活塞具有活塞头，活塞头和活塞裙部，活塞头的第一部分由活塞底座形成，活塞头的第二部分由活塞头元件，以及设置在活塞头中的周边冷却通道。至少一个导热元件布置在冷却通道中，并且经由外部接缝和从活塞顶部延伸到冷却通道的内部接缝连接到活塞底座和活塞头元件。本发明还涉及一种活塞的制造方法。

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