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公开(公告)号：US20150275820A1
公开(公告)日：2015-10-01
申请号：US14666489
申请日：2015-03-24
Applicant: Cummins Inc.
Inventor： Jason W. Mackey , David M. Barnes
CPC classification number: F02F3/003 , F02B3/06 , F02B23/0657 , F02B23/0672 , F02B23/0675 , F02F2003/0061 , F02M61/14 , Y02T10/125
Abstract: A diesel engine includes a cylinder block having a cylinder cavity defined therein. A cylinder head is coupled to the cylinder block and includes a lower semi-hemispherical surface defined thereon that defines an upper boundary of a combustion chamber. The engine includes a piston slideably disposed within the cylinder cavity that includes a piston crown having an upper surface configured to define a first portion of a lower boundary of the combustion chamber. The upper surface of the piston crown includes an axi-symmetric semi-hemispherical shape configured to correspond to the lower semi-hemispherical surface of the cylinder head.
Abstract translation: 柴油发动机包括其中限定有气缸腔的气缸体。 气缸盖联接到气缸体并且包括限定在燃烧室的上边界上的下半半球表面。 发动机包括可滑动地设置在气缸腔内的活塞，其包括活塞冠部，所述活塞冠部具有被配置为限定燃烧室的下边界的第一部分的上表面。 活塞冠的上表面包括被配置为对应于气缸盖的下半半球表面的轴对称半半球形状。
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公开(公告)号：US20250059930A1
公开(公告)日：2025-02-20
申请号：US18936345
申请日：2024-11-04
Applicant: CUMMINS INC.
Inventor： Snehal Kulkarni , Vijaysai Karuppiah Kumareshan , Patricia Madigan , Nathaniel P. Hassall , David M. Barnes , Eric R. Downey
IPC: F02F7/00
Abstract: A cylinder block includes a cylinder block body and a load path structure. The cylinder block body defines a first cylinder block upper bore. The load path structure includes a first support rib having a first support rib body interfacing with the first cylinder block upper bore. The load path structure is configured to transfer a load from the first cylinder block upper bore along a non-linear path within the cylinder block body away from the first cylinder block upper bore.
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公开(公告)号：US20240209810A1
公开(公告)日：2024-06-27
申请号：US17596931
申请日：2021-05-17
Applicant: Cummins Inc.
Inventor： Robert Earl Hoye , Jeffrey D. Jones , Daniel J. Mohr , David M. Barnes , Timothy Shipp
Abstract: A cylinder head includes novel designs for undercuts, contours of the outer enclosure, coolant jackets, and other cavities within an outer enclosure of the cylinder head. The cylinder head design enables the reduction of weight of the head while maintaining structural integrity of the head, and improves control of temperatures in intake side and exhaust side zones of the heads to improve operational efficiency of the engine. A method is provided for additive manufacturing of the cylinder head including the disclosed designs.
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公开(公告)号：US12012913B2
公开(公告)日：2024-06-18
申请号：US18053952
申请日：2022-11-09
Applicant: Cummins Inc.
Inventor： Edward D. Koeberlein , David M. Barnes , Michael T. Stanley
CPC classification number: F02M37/0052 , F02M37/0017 , F02M37/0047 , F02M55/025 , F02M61/14 , F02M65/006 , F02M2200/16 , F02M2200/18 , F02M2200/857
Abstract: A fuel system cover is provided for an internal combustion engine. The fuel system cover is configured to be mounted on the cylinder head assembly to encapsulate a portion of the fuel system to provide leak prevention, mitigation, and detection capabilities.
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公开(公告)号：US20230332521A1
公开(公告)日：2023-10-19
申请号：US18212657
申请日：2023-06-21
Applicant: Cummins Inc.
Inventor： Nathaniel P. Hassall , John Jerl Purcell, III , Stephen D. Cofer, JR. , David M. Barnes , Aaron S. Quinton , Reid M. Irish
CPC classification number: F01M1/02 , F01M1/08 , F01M1/10 , F01M5/002 , F01M11/0004 , F01M1/00 , F01M2001/1007 , F01M2011/026
Abstract: The present disclosure provides a lubrication system comprising: a pump having an inlet in fluid communication with a lubricant source and an outlet; a cooler having an inlet in fluid communication with the outlet of the pump and an outlet; a lubrication filter having an inlet in fluid communication with the outlet of the cooler and an outlet; a first delivery path in fluid communication with the outlet of the lubrication filter, the first delivery path being configured to deliver cooled, filtered lubricant to a bearing system of an engine; and a second delivery path in fluid communication with the outlet of the pump, the second delivery path being configured to deliver uncooled, unfiltered lubricant to piston cooling nozzles of the engine.
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Patent Agency Ranking
公开(公告)号：US11719139B2
公开(公告)日：2023-08-08
申请号：US16346403
申请日：2017-10-31
Applicant: Cummins Inc.
Inventor： Nathaniel P. Hassall , John Jerl Purcell, III , Stephen D. Cofer, Jr. , David M. Barnes , Aaron S. Quinton , Reid M. Irish
CPC classification number: F01M1/02 , F01M1/00 , F01M1/08 , F01M1/10 , F01M5/002 , F01M11/0004 , F01M2001/1007 , F01M2011/026
Abstract: The present disclosure provides a lubrication system comprising: a pump having an inlet in fluid communication with a lubricant source and an outlet; a cooler having an inlet in fluid communication with the outlet of the pump and an outlet; a lubrication filter having an inlet in fluid communication with the outlet of the cooler and an outlet; a first delivery path in fluid communication with the outlet of the lubrication filter, the first delivery path being configured to deliver cooled, filtered lubricant to a bearing system of an engine; and a second delivery path in fluid communication with the outlet of the pump, the second delivery path being configured to deliver uncooled, unfiltered lubricant to piston cooling nozzles of the engine.
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公开(公告)号：US11162414B2
公开(公告)日：2021-11-02
申请号：US16961588
申请日：2018-01-12
Applicant: Cummins Inc.
Inventor： David M. Barnes , Kevin C. Augustin, Sr.
Abstract: An idler shaft (100) used in an engine (10) having a gear cover (16) and a cylinder block (18). The idler shaft (100) includes an integral body (114) having a cylindrical shape. The idler shaft (100) is compressed between the gear cover (16) and the cylinder block (18) when assembled together such that the integral body (114) of the idler shaft (100) provides a clamp load and axial sealing between the gear cover (16) and the cylinder block (18). The idler shaft (100) further includes a passage way (116) fluidly connected to at least one of: the cylinder block (18) and the gear cover (16) for accommodating transmission of a fluid for the engine (10).
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公开(公告)号：US10808579B2
公开(公告)日：2020-10-20
申请号：US16661158
申请日：2019-10-23
Applicant: Cummins Inc.
Inventor： Darren Yaoshun Ting , David M. Barnes
IPC: F01L1/14 , F01L1/24 , F01L1/053 , F01L1/18 , F01L1/26 , F01L13/00 , F01L13/06 , F02D13/02 , F02D13/04 , F02D13/06
Abstract: For a given cylinder in the engine having two intake valves and two exhaust valves, one of the intake valves is driven by a bucket tappet, while the other intake valve is actuated via a roller finger follower. Similarly, one of the exhaust valves is driven by a bucket tappet, while the other exhaust valve is actuated via a roller finger follower. The intake valves read inputs form an intake camshaft, and the exhaust valves read inputs from an exhaust camshaft.
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公开(公告)号：US20200325988A1
公开(公告)日：2020-10-15
申请号：US16839626
申请日：2020-04-03
Applicant: CUMMINS INC.
Inventor： David M. Barnes
Abstract: A piston for an internal combustion engine includes a skirt and a crown coupled to the skirt. The crown is produced in isolation from the skirt using an additive manufacturing process. The piston includes a first air gap between the crown and the skirt. According to an example embodiment, the crown includes a plurality of sections produced in isolation from the skirt. The crown may include a second air gap disposed between two of the plurality of sections.
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公开(公告)号：US20150167581A1
公开(公告)日：2015-06-18
申请号：US14597671
申请日：2015-01-15
Applicant: Cummins Inc.
Inventor： Jeffrey D. Jones , Vipin Prabhakaran , David M. Barnes
CPC classification number: F02F1/24 , F02F1/242 , F02F1/42 , F02F1/4285 , F02F2001/008
Abstract: Rib configurations for increasing the structural efficiency of a cylinder head, which relates to a peak combustion pressure capability of the cylinder head. In addition to increasing peak combustion pressure, the rib configurations may also improve sealing of the cylinder head and may improve the durability of an associated cylinder head gasket.
Abstract translation: 用于提高气缸盖的结构效率的肋构造，其涉及气缸盖的峰值燃烧压力能力。 除了增加峰值燃烧压力之外，肋构造还可以改善气缸盖的密封并且可以提高相关气缸盖衬垫的耐久性。
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