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公开(公告)号：US20200018223A1
公开(公告)日：2020-01-16
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：US20190331042A1
公开(公告)日：2019-10-31
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：US10138800B2
公开(公告)日：2018-11-27
申请号：US14678323
申请日：2015-04-03
Applicant: Cummins, Inc.
Inventor： Leon A. LaPointe , Daniel J. Mohr , Edward J. Lyford-Pike , Ashish Gupta
Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.
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公开(公告)号：US09845772B2
公开(公告)日：2017-12-19
申请号：US14700353
申请日：2015-04-30
Applicant: Cummins, Inc.
Inventor： Leon A. LaPointe , Daniel J. Mohr , Edward J. Lyford-Pike , Ashish Gupta
IPC: F02M26/33 , F02M26/47 , F01N3/021 , F01N3/10 , F02B29/04 , F02M26/06 , F02M26/28 , F02M26/15 , F02M26/35 , F02D41/00 , F02D19/02 , F02M21/04
CPC classification number: F02M26/33 , F01N3/021 , F01N3/101 , F02B29/0443 , F02B29/0493 , F02D19/02 , F02D41/0065 , F02M21/04 , F02M26/06 , F02M26/15 , F02M26/28 , F02M26/35 , F02M26/47 , Y02T10/146 , Y02T10/22
Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.
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公开(公告)号：US09778237B2
公开(公告)日：2017-10-03
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.
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Patent Agency Ranking
公开(公告)号：US20160319779A1
公开(公告)日：2016-11-03
申请号：US14700353
申请日：2015-04-30
Applicant: Cummins, Inc.
Inventor： Leon A. LaPointe , Daniel J. Mohr , Edward J. Lyford-Pike , Ashish Gupta
CPC classification number: F02M26/33 , F01N3/021 , F01N3/101 , F02B29/0443 , F02B29/0493 , F02D19/02 , F02D41/0065 , F02M21/04 , F02M26/06 , F02M26/15 , F02M26/28 , F02M26/35 , F02M26/47 , Y02T10/146 , Y02T10/22
Abstract: A system and method for condensation management in a low-pressure loop EGR system are provided. The system includes an EGR condensation temperature module configured to determine an EGR condensation temperature of recirculated exhaust gas upstream of an EGR cooler and an EGR coolant temperature controller communicably coupled to the EGR condensation temperature module. The EGR coolant temperature controller provides EGR coolant to the EGR cooler at or above the EGR condensation temperature. The system also includes a charge air condensation temperature module configured to determine a charge air condensation temperature of charge air upstream of a charge air cooler and a charge air coolant temperature controller communicably coupled to the charge air condensation temperature module. The charge air coolant temperature controller provides charge air coolant to the charge air cooler at or above the charge air condensation temperature.
Abstract translation: 提供了一种用于低压环路EGR系统中冷凝管理的系统和方法。 该系统包括EGR冷凝温度模块，其被配置为确定在EGR冷却器上游的再循环废气的EGR冷凝温度和可通信地联接到EGR冷凝温度模块的EGR冷却剂温度控制器。 EGR冷却剂温度控制器在等于或高于EGR冷凝温度的EGR冷却器提供EGR冷却剂。 该系统还包括增压空气冷凝温度模块，其被配置为确定增压空气冷却器上游的增压空气的增压空气冷凝温度和可通信地连接到增压空气冷凝温度模块的增压空气冷却剂温度控制器。 增压空气冷却剂温度控制器在增压空气冷凝温度以上时向增压空气冷却器提供增压空气冷却剂。
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公开(公告)号：US20140261298A1
公开(公告)日：2014-09-18
申请号：US13841866
申请日：2013-03-15
Applicant: CUMMINS INC.
Inventor： Premjee Sasidharan , Leon A. LaPointe
IPC: F02B19/18
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.
Abstract translation: 这里描述了一种用于内燃机的主燃烧室的燃烧预燃室装置，其包括限定内燃腔的主体。 该装置还包括延伸穿过主体的至少一个孔口。 所述至少一个孔包括通向所述内部燃烧腔的第一端和通向所述主燃烧室的第二端。 第一端大于第二端。
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公开(公告)号：US11828252B2
公开(公告)日：2023-11-28
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
CPC classification number: F02M31/042 , F02B29/0418 , F02D41/0007 , F02M31/04 , F02B29/0493 , F02B37/001 , F02B37/007 , F02B43/10 , F02M26/08
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：US11060468B2
公开(公告)日：2021-07-13
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：US10393721B2
公开(公告)日：2019-08-27
申请号：US15503654
申请日：2015-08-17
Applicant: Cummins, Inc.
Inventor： Leon A. LaPointe
Abstract: Disclosed are methods, systems, and computer-readable mediums for determining the composition of gaseous fuel. An initial gaseous fuel stream is provided that includes methane, non-methane hydrocarbons, and inert gases. Air is mixed into the initial fuel stream upstream of a first catalyst. The first catalyst oxidizes only the non-methane hydrocarbons of the initial fuel stream to produce a resultant fuel stream comprising methane and inert gases. Air is mixed into the resultant fuel stream downstream of the first catalyst and upstream of a second catalyst. The second catalyst oxidizes only the methane hydrocarbons of the resultant fuel stream to produce an output fuel stream. Mole ratios of the methane, the non-methane hydrocarbons, and the inert gases of the initial fuel stream are each determined.
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