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1.发明申请公开(公告)号：US20220186677A1
公开(公告)日：2022-06-16
申请号：US17310358
申请日：2019-12-17
发明人： Liyan FENG , Min PAN , Wenjing QU , Zhen GONG , Zhengran YU , Hongjie SUN , Zixin WANG , Qiang LIU
摘要： Provided is a method for preventing the accumulation of cylinder oil at scavenging ports of low-speed marine engines. An oil passage is provided on a cylinder wall inside a cylinder. The oil passage includes multiple oil storage grooves processed in a circumferential direction of the cylinder wall. The oil passage is formed by obliquely extending from the inner side of the cylinder wall to the outside of the cylinder in a radial direction of the cylinder. The scavenging ports are uniformly distributed in a circumferential direction of the cylinder wall, and each of the oil storage grooves is correspondingly processed at an upper portion of the scavenging port upper edge of the scavenging port. Each of the oil storage grooves has a shape matching the curved surface of the scavenging port upper edge.
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公开(公告)号：US11187269B2
公开(公告)日：2021-11-30
申请号：US16639546
申请日：2018-06-19
摘要： A bearing assembly comprising a first component and a second component, the first and second components being slidably disposed with respect to each other, wherein the first component slides relative to the second component in a first direction, wherein the first component comprises a plurality of first recesses formed in a first surface facing the second component, wherein the first recesses are distributed in a second direction perpendicular to the first direction with neighboring first recesses being spaced apart in the second direction with a first spacing, wherein the second component comprises a plurality of second recesses formed in a second surface facing the first surface of the first component, wherein the second recesses are distributed in the second direction with neighboring second recesses being spaced apart in the second direction with a second spacing, wherein the first recesses are sized to fit within the second spacings and the second recesses are sized to fit within the first spacings, and wherein the first and second components are urged into a relative position in the second direction in which the first and second recesses do not overlap one another.
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3.发明授权公开(公告)号：US10961881B2
公开(公告)日：2021-03-30
申请号：US16909265
申请日：2020-06-23
发明人： Nick Paw Bennedsen
摘要： Disclosed is lubrication for a slow-running two-stroke engine, especially marine diesel engines. The lubrication uses Swirl Injection Principle by locating the lubricant injectors closer to the TDC than ⅕ of the full stroke of the piston, which is closer than in typical marine diesel engines. This can be achieved by reconstructing cylinder liners or by adding new mounting holes to the cylinder. In case that such reconstruction is not possible, an improvement of SIP principles can also be achieved by directing the spray towards the TDC or to a location on the cylinder liner closer to the TDC as compared to the location of the SIP valves, for example under an angle of more than 30 degrees or even more than 60 degrees when measured from a plane normal to the cylinder axis.
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公开(公告)号：US10731527B2
公开(公告)日：2020-08-04
申请号：US15770903
申请日：2015-10-28
发明人： Nick Paw Bennedsen
摘要： Disclosed is lubrication for a slow-running two-stroke engine, especially marine diesel engines. The lubrication uses Swirl Injection Principle by locating the lubricant injectors closer to the TDC than ⅕ of the full stroke of the piston, which is closer than in typical marine diesel engines. This can be achieved by reconstructing cylinder liners or by adding new mounting holes to the cylinder. In case that such reconstruction is not possible, an improvement of SIP principles can also be achieved by directing the spray towards the TDC or to a location on the cylinder liner closer to the TDC as compared to the location of the SIP valves, for example under an angle of more than 30 degrees or even more than 60 degrees when measured from a plane normal to the cylinder axis.
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5.发明授权公开(公告)号：US10605194B2
公开(公告)日：2020-03-31
申请号：US15718975
申请日：2017-09-28
发明人： Rainer Lach , Franz Weber , Guenter Hans Grosch
摘要： The invention relates to a cylinder bore and a method. The cylinder bore is configured to receive a piston for reciprocating movement therein and has a pressure side and a counter-pressure side. The cylinder bore includes a bore surface having a first roughness value in a first longitudinal region on the pressure side and a second roughness value different from the first roughness value in the first longitudinal region on the counter-pressure side.
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公开(公告)号：US10202933B2
公开(公告)日：2019-02-12
申请号：US15188714
申请日：2016-06-21
摘要： A combined oil filter and restrictor assembly is disclosed having an oil flow restrictor interposed between first and second filters so that, irrespective of the direction of oil flow through the restrictor, debris cannot enter a small diameter bore 32 in a body of the restrictor thereby reducing the likelihood of restrictor blockage. The combined oil filter and restrictor assembly includes a metal threaded member that enables the combined oil filter and restrictor assembly to be easily and quickly assembled to or removed from a component such as a cylinder head of a variable displacement engine. The combined oil filter and restrictor assembly can be used to provide a restricted flow of oil from oil supply passages to signal oil passages used for controlling the operation of deactivatable hydraulic lash adjusters so as to purge the signal oil passages when the deactivatable hydraulic lash adjusters are not deactivated.
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公开(公告)号：US20180283312A1
公开(公告)日：2018-10-04
申请号：US15934742
申请日：2018-03-23
申请人： Quest Engines, LLC
IPC分类号： F02F1/18 , F01L1/04 , F02B33/26 , F02B75/22 , F02F1/20 , F02F1/24 , F02F3/28 , F02M63/00 , F16C3/10
摘要： Internal combustion engines having a split crankshaft are disclosed. The engines may also have non-circular, preferably rectangular, cross-section pistons and cylinders. The pistons may include a skirt with a field of pockets that provide a ringless, non-lubricated, seal equivalent. The pistons also may have a domed piston head with depressions thereon to facilitate the movement of air/charge in the cylinder. The engines also may use multi-stage poppet valves in lieu of conventional poppet valves. The engines may use the pumping motion of the engine piston to supercharge the cylinder with air/charge. The engines also may operate in an inverted orientation in which the piston is closer to the local gravitationally dominant terrestrial body's center of gravity at top dead center position than at bottom dead center position.
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公开(公告)号：US10036346B2
公开(公告)日：2018-07-31
申请号：US14850059
申请日：2015-09-10
IPC分类号： B22C9/10 , B22C9/24 , B22C9/04 , B22D17/00 , B22D21/00 , B22D25/02 , F02F1/20 , B33Y80/00 , B22D19/00 , F01M11/02
CPC分类号： F02F1/20 , B22C9/043 , B22C9/108 , B22C9/24 , B22D17/00 , B22D19/0009 , B22D19/0072 , B22D21/007 , B22D25/02 , B33Y80/00 , F01M11/02 , F01M2011/026
摘要： An engine has a cylinder block formed by a block material and defining at least one cylinder. The block defines a lubrication circuit with fluid passages including an inlet passage, a main oil gallery, a crankshaft bearing lubrication passage, and a piston ring lubrication passage. The fluid passages are formed by continuous metal walls in contact with and surrounded by the block material. At least one of the fluid passages is curved. A method of forming a component with an internal pressurized lubrication circuit includes positioning a lost core insert in a tool, with the insert shaped to form a lubrication circuit. The lost core insert has a lost core material generally encapsulated in a continuous metal shell, and at least one curved section. Material is provided into the tool to form a body surrounding the lost core insert thereby forming a component preform.
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公开(公告)号：US09739231B2
公开(公告)日：2017-08-22
申请号：US14701029
申请日：2015-04-30
发明人： Ian Graham Pegg , Roland Paul Stark
CPC分类号： F02F1/10 , F01P2003/021 , F02F1/20 , F02F7/0002 , F02F7/0021
摘要： An engine block has one or more bores configured for receiving one or more respective pistons; one or more coolant passages; and one or more lubricant passages. At least portions of the coolant passages and lubricant passages are disposed adjacent to and about the bores so as to cool the bores. The coolant passage portion extends over a first lengthwise portion of the bores and the lubricant passage portion extending over a second lengthwise portion of the bores. The first and second lengthwise portions are longitudinally spaced apart along the bores.
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公开(公告)号：US20170204842A1
公开(公告)日：2017-07-20
申请号：US15512560
申请日：2014-09-29
CPC分类号： F04B39/0292 , F01M11/02 , F01M13/023 , F01M2011/022 , F02F1/20 , F04B53/143 , F04B53/164 , F16N31/00
摘要： A reciprocating machine incitides a cylinder including an internal cylinder wail, a piston movable in the cylinder between a top position and a. bottom position, the piston, comprising an upper ring pack and a lower ring pack disposed around a circumference of the piston and spaced from each other by a first distance, and a circumferential collector groove in the cylinder wall in a position that is above the lower ring pack when the piston is in the top position and that is below the upper ring pack when the piston is in the bottom position, the collector groove including at least” one hole eonneciabie to a conduit for comieciion to a sump. A helical groove can also be provided in the cylinder wall.
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