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公开(公告)号：US20150101560A1
公开(公告)日：2015-04-16
申请号：US14391390
申请日：2013-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Robert Böwning , Enrico Drehobl , Christian Drexel , Manfred Rapp
IPC: F02F3/28
CPC classification number: F02F3/28 , F02B23/0639 , Y02T10/125
Abstract: A piston of an internal combustion engine is disclosed. The piston may have a piston skirt having a central axis. The piston may also have a piston crown delimiting the piston skirt with a diameter D adjacent a top of the piston skirt. The piston crown may have an edge of the piston crown of width b and a piston crown recess of depth t. The piston crown recess may have a piston recess wall with an opening cross section of diameter d. At least one groove with an internal diameter dn may be provided within the edge of the piston crown. The at least one groove may run in a circumferential direction relative to the central axis. The internal diameter dn may be larger than the diameter d.
Abstract translation: 公开了一种内燃机的活塞。 活塞可以具有具有中心轴线的活塞裙部。 活塞还可以具有限定活塞裙部的活塞冠，其具有邻近活塞裙部顶部的直径D. 活塞冠可以具有宽度为b的活塞顶部的边缘和深度为t的活塞顶部凹部。 活塞冠凹部可以具有直径为d的开口横截面的活塞凹部壁。 至少一个具有内径dn的凹槽可以设置在活塞顶部的边缘内。 所述至少一个凹槽可相对于所述中心轴在圆周方向上延伸。 内径dn可以大于直径d。
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公开(公告)号：US10208652B2
公开(公告)日：2019-02-19
申请号：US15374083
申请日：2016-12-09
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Thomas Maier , Enrico Drehobl
Abstract: A pre-chamber body for an internal combustion engine is disclosed. The pre-chamber body may have a pre-chamber. The pre-chamber body may also have a flow transfer passage, which may fluidly connect the pre-chamber and an exterior of the pre-chamber body. In addition, the pre-chamber body may have at least one backflow channel, which may fluidly connect the pre-chamber and the flow transfer passage.
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公开(公告)号：US20150107543A1
公开(公告)日：2015-04-23
申请号：US14391330
申请日：2013-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Robert Böwing , Enrico Drehobl , Christian Drexel , Manfred Rapp
IPC: F02F3/28
CPC classification number: F02F3/28 , F02B23/0621 , F02B23/0624 , F02B23/0627 , F02B23/08 , Y02T10/125
Abstract: A piston for an internal combustion engine is disclosed. The piston may have a piston skirt with a centre axis. The piston may also have a piston crown disposed adjacent a top of the piston skirt. The piston crown may have a diameter D. The piston crown may have a piston crown margin of width b extending in a circumferential direction. The piston crown may also have a piston trough with a depth t. The piston trough may have a piston trough wall with a base diameter. The piston trough may also have at least one recess with a height h. The height h parallel to the direction of the centre axis may satisfy the following requirement: 0.2 t
Abstract translation: 公开了一种用于内燃机的活塞。 活塞可具有具有中心轴线的活塞裙部。 活塞还可以具有邻近活塞裙部的顶部设置的活塞冠。 活塞冠可以具有直径D.活塞冠可以具有在圆周方向上延伸的宽度为b的活塞冠边缘。 活塞冠也可以具有深度为t的活塞槽。 活塞槽可具有底座直径的活塞槽壁。 活塞槽还可具有至少一个高度为h的凹槽。 平行于中心轴方向的高度h可满足以下要求：0.2 t <= h <= t。
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Patent Agency Ranking
公开(公告)号：US12163492B2
公开(公告)日：2024-12-10
申请号：US18287700
申请日：2022-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Enrico Drehobl , Friedrich Schaefer
Abstract: The present invention pertains to arrangements for a pre-chamber of a combustion engine as well as pre-chambers comprising such arrangements, in particular to condition or temper a gas flow within a gas-purged pre-chamber prior to entering a combustion area. Accordingly, an arrangement for a pre-chamber gas valve of a combustion engine is suggested, comprising a housing having an outer surface and comprising a channel, a first end of the channel being in fluid communication with the outer surface and a second end of the channel being connectable to a valve seat of the pre-chamber gas valve, and at least one protrusion extending from the outer surface of the housing. The first end of the channel is arranged upstream of the second end of the channel and downstream of at least one protrusion, wherein the arrangement is configured to absorb heat from a combustion portion of the combustion engine arranged downstream of the second end and to temper a gas upstream of the second end only using said heat, when the arrangement is in a mounted state.
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公开(公告)号：US09670829B2
公开(公告)日：2017-06-06
申请号：US14391388
申请日：2013-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Robert Böwing , Enrico Drehobl , Christian Drexel , Manfred Rapp
CPC classification number: F02B23/0639 , F02F3/28 , Y02T10/125
Abstract: An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfill the following condition with respect to the wall height H: 0.05 H
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公开(公告)号：US09476381B2
公开(公告)日：2016-10-25
申请号：US14391330
申请日：2013-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Robert Böwing , Enrico Drehobl , Christian Drexel , Manfred Rapp
CPC classification number: F02F3/28 , F02B23/0621 , F02B23/0624 , F02B23/0627 , F02B23/08 , Y02T10/125
Abstract: A piston for an internal combustion engine is disclosed. The piston may have a piston skirt with a center axis. The piston may also have a piston crown disposed adjacent a top of the piston skirt. The piston crown may have a diameter D. The piston crown may have a piston crown margin of width b extending in a circumferential direction. The piston crown may also have a piston trough with a depth t. The piston trough may have a piston trough wall with a base diameter. The piston trough may also have at least one recess with a height h. The height h parallel to the direction of the center axis may satisfy the following requirement: 0.2 t
Abstract translation: 公开了一种用于内燃机的活塞。 活塞可具有具有中心轴线的活塞裙部。 活塞还可以具有邻近活塞裙部的顶部设置的活塞冠。 活塞冠可以具有直径D.活塞冠可以具有在圆周方向上延伸的宽度为b的活塞冠边缘。 活塞冠也可以具有深度为t的活塞槽。 活塞槽可具有底座直径的活塞槽壁。 活塞槽还可具有至少一个高度为h的凹槽。 平行于中心轴方向的高度h可满足以下要求：0.2 t <= h <= t。
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公开(公告)号：US09464593B2
公开(公告)日：2016-10-11
申请号：US14391390
申请日：2013-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Robert Böwing , Enrico Drehobl , Christian Drexel , Manfred Rapp
CPC classification number: F02F3/28 , F02B23/0639 , Y02T10/125
Abstract: A piston of an internal combustion engine is disclosed. The piston may have a piston skirt having a central axis. The piston may also have a piston crown delimiting the piston skirt with a diameter D adjacent a top of the piston skirt. The piston crown may have an edge of the piston crown of width b and a piston crown recess of depth t. The piston crown recess may have a piston recess wall with an opening cross section of diameter d. At least one groove with an internal diameter dn may be provided within the edge of the piston crown. The at least one groove may run in a circumferential direction relative to the central axis. The internal diameter dn may be larger than the diameter d.
Abstract translation: 公开了一种内燃机的活塞。 活塞可以具有具有中心轴线的活塞裙部。 活塞还可以具有限定活塞裙部的活塞冠，其具有邻近活塞裙部顶部的直径D. 活塞冠可以具有宽度为b的活塞顶部的边缘和深度为t的活塞顶部凹部。 活塞冠凹部可以具有直径为d的开口横截面的活塞凹部壁。 至少一个具有内径dn的凹槽可以设置在活塞顶部的边缘内。 所述至少一个凹槽可相对于所述中心轴在圆周方向上延伸。 内径dn可以大于直径d。
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公开(公告)号：US20150107559A1
公开(公告)日：2015-04-23
申请号：US14391388
申请日：2013-04-12
Applicant: Caterpillar Energy Solutions GmbH
Inventor： Robert Böwing , Enrico Drehobl , Christian Drexel , Manfred Rapp
CPC classification number: F02B23/0639 , F02F3/28 , Y02T10/125
Abstract: An engine block of an internal combustion engine is disclosed. The engine block may have a piston and at least one gas exchange valve. The piston may have a piston skirt having a first center axis. The piston may also have a piston head delimiting the piston skirt at the top with a diameter D. The piston head may have a piston head edge and a piston head recess with a piston recess wall having a height H. At least one valve pocket may be formed into the piston head edge. The at least one valve pocket may have a valve pocket depth T with respect to the piston head edge. The valve pocket depth T may fulfil the following condition with respect to the wall height H: 0.05 H
Abstract translation: 公开了一种内燃机的发动机缸体。 发动机缸体可以具有活塞和至少一个气体交换阀。 活塞可以具有具有第一中心轴线的活塞裙部。 活塞还可以具有活塞头，其顶部具有直径D的活塞裙部。活塞头可以具有活塞头边缘和具有高度H的活塞凹陷壁的活塞头凹部。至少一个阀口可以 形成活塞头边缘。 所述至少一个阀口可相对于活塞头边缘具有阀口深度T. 阀口深度T可以相对于壁高H满足以下条件：0.05H <= T <= 0.5H。
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