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公开(公告)号：US20220307444A1
公开(公告)日：2022-09-29
申请号：US16500813
申请日：2018-03-26
发明人： Frank-Peter Jung , Philipp Licht , Rainer Scharp
摘要： A piston of an internal combustion engine is disclosed. The piston includes a piston head with a piston bowl, a ring part and an annular cooling channel arranged between the ring part and the piston bowl. A closure element is provided to close the cooling channel in a direction away from the piston bowl. At least one guiding element is arranged in the cooling channel. The at least one guiding element provides a lug facing in a direction of an inner cooling channel wall and disposed at least partially circumferentially. The lug of the at least one guiding element is structured and arranged to direct cooling oil present in the cooling channel towards an upper region of the inner cooling channel wall relative to the closure element to facilitate cooling the upper region.
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公开(公告)号：US11274747B2
公开(公告)日：2022-03-15
申请号：US16938907
申请日：2020-07-24
发明人： Philipp Licht , Rainer Scharp
摘要： A piston for an internal combustion engine may include at least one oil ring groove configured to receive an oil scraper ring. The at least one oil ring groove may have an upper groove flank, a lower groove flank, and a groove base. The at least one oil ring groove may be structured to be asymmetrical and deeper in a radial direction in a region of the lower groove flank. The piston may also include an oil outflow channel structured and arranged to fluidically communicate with an oil collecting chamber disposed in a spine of the oil scraper ring. A connecting point between at least one of (i) the at least one oil ring groove and the oil outflow channel, and (ii) the oil collecting chamber and the oil outflow channel may be disposed exclusively in the lower groove flank.
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3.发明授权公开(公告)号：US10415499B2
公开(公告)日：2019-09-17
申请号：US14778074
申请日：2014-03-18
摘要： A method for producing a piston for an internal combustion engine may include the steps of: producing a first blank corresponding to a piston main body via a deformation process; producing a second blank corresponding to a piston ring part via at least one of a deformation process and a casting process; pre-machining the first blank and the second blank, and finishing a welding surface of the first blank and a welding surface of the second blank via machining; connecting the first blank and the second blank via welding the welding surface of the first blank to the welding surface of the second blank to form a piston body; and performing at least one of a secondary machining process and a finish machining process on the piston body to produce the piston.
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公开(公告)号：US10260452B2
公开(公告)日：2019-04-16
申请号：US15303220
申请日：2015-04-09
发明人： Timo Linke , Rainer Scharp
摘要： An assembly for cooling oil for an internal combustion engine may include a piston having a piston head and a piston skirt. The piston head may include a piston crown with an undersurface having an outer region configured as a guiding surface for the cooling oil, a circumferential ring part, and, in a region of the circumferential ring part, a circumferential cooling channel with at least one feed opening for the cooling oil. The assembly may also include a first oil spray nozzle for creating a first cooling oil jet directed at the feed opening, and a second oil spray nozzle for creating a second cooling oil jet directed at the guiding surface such that the second cooling oil jet may deflect and flow along the guiding surface in a direction of the undersurface. At least the first oil spray nozzle may be positioned below the piston skirt.
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公开(公告)号：US10174712B2
公开(公告)日：2019-01-08
申请号：US14894339
申请日：2014-05-28
发明人： Rainer Scharp , Peter Kemnitz
摘要： A piston for an internal combustion engine may include a piston crown and a piston skirt. The piston crown may include a piston head, a peripheral top land, a peripheral annular zone having a plurality of annular grooves and an annular closed cooling channel. The cooling channel may include a cooling channel base and a cooling channel cover. The cooling channel base may be arranged above the lower annular groove in relation to a region of combustion.
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公开(公告)号：US09163580B2
公开(公告)日：2015-10-20
申请号：US14195921
申请日：2014-03-04
发明人： Helmut Edel , Andreas Seeger-Van Nie , Volker Weisse , Achim Fedyna , Christian Peschke , Rainer Scharp
CPC分类号： F02F3/00 , F02F3/003 , F02F3/22 , F02F2003/0061 , F05C2201/021 , F05C2201/0448 , Y10T29/49252
摘要： A piston for an internal combustion engine, having a piston base body, a piston ring element having at least an inner region of a piston crown, and a piston skirt. The piston is provided with pin bosses having pin bores and the ring element has at least an outer region of a piston crown having a circumferential top land and a circumferential ring belt provided with ring grooves. The piston base body and piston ring element are joined together by way of corresponding, conical joining surfaces configured on them.
摘要翻译： 一种用于内燃机的活塞，具有活塞基体，至少具有活塞顶部的内部区域的活塞环元件和活塞裙部。 活塞设置有具有销孔的销凸台，并且环形元件具有至少一个具有周向顶部凸台的活塞顶部的外部区域和设置有环形槽的周向环形带。 活塞基体和活塞环元件通过配置在其上的相应的锥形连接表面连接在一起。
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公开(公告)号：US20200003150A1
公开(公告)日：2020-01-02
申请号：US16471559
申请日：2017-11-24
发明人： Frank-Peter Jung , Rainer Scharp
IPC分类号： F02F3/22
摘要： A piston for an internal combustion engine may include a piston body including a piston skirt, a piston head, and a pocket. The piston head may include a cooling channel for receiving a cooling medium. The cooling channel may be open on a side facing away from a piston crown. The piston may also include at least one cooling channel cover at least partially closing the cooling channel, and a piston pin boss having a boss bore configured to accommodate a piston pin. The piston may further include a piston pin lubricating channel fluidically connected to the cooling channel and extending in a direction of the piston pin. The pocket may at least partially define the piston pin lubricating channel. The at least one cooling channel cover may have at least one lug that is offset radially inward and may, together with the pocket, define the piston pin lubricating channel.
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公开(公告)号：US10065277B2
公开(公告)日：2018-09-04
申请号：US15130194
申请日：2016-04-15
摘要： A method for the production of a piston made of steel, for an internal combustion engine, in which the upper piston part is produced using the forging method, and the lower piston part is produced using the forging or casting method, and they are subsequently welded to one another. To simplify the production method and make it cheaper, the upper piston part is forged using the method of hot forming and of cold calibration, to finish it to such an extent that further processing of the combustion bowl and of the upper cooling channel regions can be eliminated.
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公开(公告)号：US09869269B2
公开(公告)日：2018-01-16
申请号：US14894902
申请日：2014-05-28
发明人： Rainer Scharp , Peter Kemnitz
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.
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公开(公告)号：US20170321629A1
公开(公告)日：2017-11-09
申请号：US15523210
申请日：2015-10-27
发明人： Sascha-Oliver Boczek , Timo Linke , Rainer Scharp
摘要： A cooling channel cover for a piston of an internal combustion engine may include a body having mutually opposite end faces. At least one supply element for a coolant may be received in an opening disposed in the cooling channel cover. The supply element may include an inlet region and an outlet region, and may be held on the cooling channel cover via a clipped-in latching connection. A spring tab may be disposed on the inlet region of the supply element, and/or a latching element may be disposed on the outlet region of the supply element. The spring clip may engage one of the end faces and the latching element may engage the opposite end face.
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