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公开(公告)号：US10047694B2
公开(公告)日：2018-08-14
申请号：US14898395
申请日：2014-06-13
Applicant: KS KOLBENSCHMIDT, GMBH
Inventor： Matthias Laqua , Markus Pinz
Abstract: A piston for an internal combustion engine has a sliding shoe carried in a force accumulator. The sliding shoe has a channel to transfer cooling oil into a hollow space. The force accumulator is located is a channel formed by the piston, and the sliding shoe is guided partially inside the force accumulator.
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公开(公告)号：US20180230937A1
公开(公告)日：2018-08-16
申请号：US15751277
申请日：2016-08-11
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua
CPC classification number: F02F3/20 , B21K1/18 , B21K1/185 , B23P15/10 , F02F3/22 , F02F2003/0007 , F02F2200/04 , F16J1/001
Abstract: Disclosed is a monoblock or cooling channel piston and a method for producing a monoblock piston for use in an internal combustion engine. A piston blank includes a circumferential collar protruding radially in the region of the piston crown is first produced and the collar is then shaped. A contact region on a top region of the piston skirts and the collar is shaped such that the outer circumferential edge thereof points at a distance to the contact region and forms a defined gap. The gap is then sealed by a closure element in order to form a closed cooling channel.
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公开(公告)号：US10337450B2
公开(公告)日：2019-07-02
申请号：US15323368
申请日：2015-07-02
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua , Volker Lehnert
Abstract: The invention relates to a cooling-channel piston for an internal combustion engine, having an upper part and a lower part, wherein the upper part and the lower part are connected to one another by way of a cohesive joint in the form of a weld seam, and the upper part and the lower part form an annularly encircling cooling channel which is arranged approximately behind a ring section, wherein a gap geometry is provided between a lower edge of the ring section and an upper edge of the lower part, wherein the gap geometry has at least one sliding surface which is arranged on a lower edge of the ring section of the cooling-channel piston and/or on the corresponding upper edge of the lower part of the cooling-channel piston, and to several methods for the operation of a cooling-channel piston.
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公开(公告)号：US20160146151A1
公开(公告)日：2016-05-26
申请号：US14898395
申请日：2014-06-13
Applicant: KS KOLBENSCHMIDT, GMBH
Inventor： Matthias Laqua , Markus Pinz
IPC: F02F3/22
CPC classification number: F02F3/22 , F02F3/0015 , F02F3/28 , F02F3/285
Abstract: A piston for an internal combustion engine has a sliding shoe carried in a force accumulator. The sliding shoe has a channel to transfer cooling oil into a hollow space. The force accumulator is located is a channel formed by the piston, and the sliding shoe is guided partially inside the force accumulator.
Abstract translation: 用于内燃机的活塞具有承载在力蓄能器中的滑靴。 滑靴具有将冷却油转移到中空空间的通道。 力蓄能器是由活塞形成的通道，滑靴部分地在力蓄能器内部被引导。
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Patent Agency Ranking
公开(公告)号：US12078247B2
公开(公告)日：2024-09-03
申请号：US18160990
申请日：2023-01-27
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua , Klaus Bacher
Abstract: Piston blank for a piston, comprising a piston lower part, which comprises a first joining surface running around a central axis of the piston blank, and a piston upper part, which comprises a second joining surface running around the central axis and an inner surface running around the central axis and adjoining the second joining surface as viewed along the central axis, wherein the piston upper part can be placed with its second joining surface on the first joining surface, and wherein a tangential plane which is assigned to the second joining surface is inclined relative to the central axis such that the tangential plane intersects the inner surface.
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公开(公告)号：US11492996B2
公开(公告)日：2022-11-08
申请号：US16802603
申请日：2020-02-27
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua , Alexander Schäfer , Wolfgang Köhler , Dieter Krämer
IPC: F02F3/00
Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.
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公开(公告)号：US20180355818A1
公开(公告)日：2018-12-13
申请号：US15765774
申请日：2016-10-07
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua , Alexander Schäfer , Wolfgang Köhler , Dieter Krämer
CPC classification number: F02F3/0023 , F02F3/22
Abstract: The invention relates to a piston for an internal combustion engine formed from a lower part and an upper part which are threadingly connected to one another to form a piston. In one example, an anti-rotation safeguard device is used to prevent unwanted rotation of the upper part relative to the lower part. In another example, a forged extension and a nut are used to obtain a prestress during operation of the piston. In another example, a cooling gallery including extension bores are used to increase the cooling capacity.
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公开(公告)号：US20180313293A1
公开(公告)日：2018-11-01
申请号：US15772205
申请日：2016-11-02
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua
CPC classification number: F02F3/0023 , F02F3/22
Abstract: A piston for an internal combustion engine including an upper part and a lower part connected by at least one threaded connection. The lower part includes a cutout positioned in the inner region of the piston above a peak of the pin bore extending toward the outer periphery of the piston. The lower part further includes at least one web positioned above the pin bore extending toward the outer periphery of the piston.
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公开(公告)号：US20170138297A1
公开(公告)日：2017-05-18
申请号：US15323368
申请日：2015-07-02
Applicant: KS Kolbenschmidt GmbH
Inventor： Matthias Laqua , Volker Lehnert
CPC classification number: F02F3/22 , F02F3/003 , F02F2003/0061
Abstract: The invention relates to a cooling-channel piston for an internal combustion engine, having an upper part and a lower part, wherein the upper part and the lower part are connected to one another by way of a cohesive joint in the form of a weld seam, and the upper part and the lower part form an annularly encircling cooling channel which is arranged approximately behind a ring section, wherein a gap geometry is provided between a lower edge of the ring section and an upper edge of the lower part, wherein the gap geometry has at least one sliding surface which is arranged on a lower edge of the ring section of the cooling-channel piston and/or on the corresponding upper edge of the lower part of the cooling-channel piston, and to several methods for the operation of a cooling-channel piston.
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