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公开(公告)号：US10815871B2
公开(公告)日：2020-10-27
申请号：US16483675
申请日：2018-01-31
Applicant: Cummins Inc.
Inventor： Philipe F. Saad , Leon A. LaPointe , Premjee Sasidharan , Atsuhiko Watanabe
Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.
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公开(公告)号：US09797296B2
公开(公告)日：2017-10-24
申请号：US13841866
申请日：2013-03-15
Applicant: Cummins Inc.
Inventor： Premjee Sasidharan , Leon A. LaPointe
IPC: F02B19/14 , F02B19/18 , F02B19/12 , F02B21/00 , F02B19/16 , F02B3/06 , F02B1/04 , F02B19/10 , F02M61/18
CPC classification number: F02B19/18 , F02B1/04 , F02B3/06 , F02B19/1014 , F02B19/1019 , F02B19/108 , F02B19/12 , F02B19/14 , F02B19/16 , F02B21/00 , F02M61/1833 , Y02T10/125
Abstract: Described herein is a combustion pre-chamber apparatus for a main combustion chamber of an internal combustion engine that includes a body that defines an internal combustion cavity. The apparatus also includes at least one orifice that extends through the body. The at least one orifice includes a first end open to the internal combustion cavity and a second end open to the main combustion chamber. The first end is bigger than the second end.
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公开(公告)号：US11293339B2
公开(公告)日：2022-04-05
申请号：US17078759
申请日：2020-10-23
Applicant: Cummins Inc.
Inventor： Philipe F. Saad , Leon A. LaPointe , Premjee Sasidharan , Atsuhiko Watanabe
Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.
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公开(公告)号：US11193432B2
公开(公告)日：2021-12-07
申请号：US16475264
申请日：2016-12-29
Applicant: Cummins Inc.
Inventor： Ashish S. Gupta , Leon A. LaPointe
Abstract: An internal combustion engine, a method of operating the internal combustion engine, and a controller are disclosed. The method may be implemented in part by the controller and comprises determining a shaft angle of an engine shaft; supplying, to an ion sensor fluidly coupled to a combustion chamber of the engine a low voltage at a beginning of a combustion cycle to generate an ion sensor current and a high voltage during an ionization voltage window based at least in part on the shaft angle, wherein the low voltage is configured to prevent premature ignition of fuel in the combustion chamber and the high voltage exceeds the low voltage and is configured to increase the ion sensor current above a current threshold.
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公开(公告)号：US20210040880A1
公开(公告)日：2021-02-11
申请号：US17078759
申请日：2020-10-23
Applicant: Cummins Inc.
Inventor： Philipe F. Saad , Leon A. LaPointe , Premjee Sasidharan , Atsuhiko Watanabe
Abstract: An engine system comprising an internal combustion engine and a turbocharger, where a diameter of the at least one intake valve is greater than a diameter of the at least one exhaust valve, the salient angle of the piston bowl is at least 10 degrees, the ratio between the piston bowl opening diameter and the piston bowl depth is approximately 0.5 to 2.0, the intake valve opens before top dead center on an exhaust stroke of the internal combustion engine and closes before bottom dead center of an intake stroke of the internal combustion engine, and the turbocharger has a combined efficiency of more than 50%.
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Patent Agency Ranking
公开(公告)号：US20210332777A1
公开(公告)日：2021-10-28
申请号：US17370269
申请日：2021-07-08
Applicant: CUMMINS INC.
Inventor： J. Steven Kolhouse , Daniel J. Mohr , Adrian P. Dale , Samuel C. Geckler , Leon A. LaPointe , David J. Stroh , Anthony Kyle Perfetto , Robin J. Bremmer , Ryan Edward Schultz
Abstract: An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.
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公开(公告)号：US20210108580A1
公开(公告)日：2021-04-15
申请号：US16497594
申请日：2018-03-21
Applicant: CUMMINS INC.
Inventor： J. Steven Kolhouse , Daniel J. Mohr , Adrian P. Dale , Samuel C. Geckler , Leon A. LaPointe , David J. Stroh , Anthony Kyle Perfetto , Robin J. Bremmer , Ryan Edward Schultz
Abstract: An intake air circuit is structured to transmit intake air from a turbocharger compressor to an intake manifold of an engine. A charge air cooler (“CAC”), a bypass line, and a bypass heater are each positioned along the intake air circuit in parallel with each other. A first control valve is structured to controllably divert the intake air around the CAC. A second control valve is structured to controllably divert the intake air around at least one of the bypass line and the bypass heater. A controller operatively coupled to each of the engine, and the first and second control valves is structured to control each of the first and second control valves to cause the intake air to flow along a determined desired flow path based on each of measured ambient temperature and measured engine load.
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公开(公告)号：US20170211508A1
公开(公告)日：2017-07-27
申请号：US15321631
申请日：2015-06-30
Applicant: Cummins Inc.
Inventor： Patrick M. Pierz , Leon A. LaPointe
CPC classification number: F02F1/4214 , F01L1/26 , F01L2800/10 , F02B43/10 , F02F2001/247 , Y02T10/32
Abstract: An engine including a gaseous fuel system; a cylinder including a flat combustion face, the flat combustion face including four valves, each valve positioned in a port, the four valves including two intake valves positioned to selectively meter intake of charge into the cylinder via respective ports and including two exhaust valves positioned to selectively meter output of exhaust from the cylinder via respective ports. Intake valves are larger than exhaust valves and an ignition source is offset from center of a combustion surface.
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9.发明申请公开(公告)号：US20150241399A1
公开(公告)日：2015-08-27
申请号：US14631036
申请日：2015-02-25
Applicant: Cummins, Inc.
Inventor： Shu Li , Leon A. LaPointe , Aniket Gupta , Matthew L. Schneider
CPC classification number: G01N33/0036 , G01N25/18 , G01N33/225
Abstract: Disclosed are methods, systems, and computer-readable mediums for determining combustion properties of wellhead gas. A methane concentration of a gas mixture is measured. A non-methane hydrocarbon concentration of the gas mixture is measured. An inert concentration of the gas mixture is calculated. A first surrogate for the non-methane hydrocarbon concentration is selected, where the first surrogate is selected as propane if the methane concentration is greater than a first threshold, and where the first surrogate is selected as pentane if the methane concentration is less than or equal to the first threshold. A methane number of the gas mixture is determined, where the methane number is based on the methane concentration, the first surrogate, and the inert concentration.
Abstract translation: 公开了用于确定井口气体的燃烧性质的方法，系统和计算机可读介质。 测量气体混合物的甲烷浓度。 测量气体混合物的非甲烷烃浓度。 计算气体混合物的惰性浓度。 选择非甲烷烃浓度的第一替代物，其中如果甲烷浓度大于第一阈值，则将第一替代物选择为丙烷，并且如果甲烷浓度小于或等于第一替代物选择为戊烷， 到第一个阈值。 确定气体混合物的甲烷数，其中甲烷数基于甲烷浓度，第一替代物和惰性浓度。
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公开(公告)号：US10724471B2
公开(公告)日：2020-07-28
申请号：US16060512
申请日：2015-12-21
Applicant: CUMMINS INC.
Inventor： Prashant P. Patel , Prashaanth Ravindran , Christopher R. Nelson , Leon A. LaPointe
Abstract: An engine waste heat recovery (WHR) system includes a turbocharger WHR portion, an exhaust WHR portion, an expander in the exhaust WHR portion, a condenser, valves, and a controller. The expander receives a working fluid in a superheated form and converts thermal energy in the working fluid into mechanical energy or electrical energy. The condenser condenses the working fluid for recirculation through the engine WHR system. The recuperator is fluidly coupled between the expander and the condenser to allow the working fluid to flow from the expander to the condenser. The recuperator transfers thermal energy to a flow of the working fluid from the turbocharger WHR portion. Each valve is fluidly coupled to one of the turbocharger WHR portion and the exhaust WHR portion. The controller is electrically coupled to the valves, and the controller selectively controls the valves to selectively circulate the working fluid through the engine WHR system.
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