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公开(公告)号：US11136932B2
公开(公告)日：2021-10-05
申请号：US15537146
申请日：2015-12-17
Applicant: CUMMINS INC.
Inventor： Axel O. zur Loye , Christopher Pollitt , Timothy P. Lutz
Abstract: Methods and systems of controlling operation of a dual fuel engine are provided, comprising determining a target exhaust temperature, sensing an actual exhaust temperature, determining an exhaust temperature deviation by comparing the actual exhaust temperature to the target exhaust temperature, comparing the exhaust temperature deviation to a threshold, adjusting at least one of an intake throttle, a wastegate, a compressor bypass valve, an exhaust throttle, a VGT and engine valve timing when the exhaust temperature deviation exceeds the threshold to control charge-flow to the engine, and continuing the adjusting until the exhaust temperature deviation is less than the threshold.
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2.发明申请公开(公告)号：US20180010515A1
公开(公告)日：2018-01-11
申请号：US15713047
申请日：2017-09-22
Applicant: Cummins Inc.
Inventor： J. Steven Kolhouse , Timothy P. Lutz , C. Larry Bruner , Christopher Pollitt
CPC classification number: F02B47/10 , F02B3/06 , F02B75/22 , F02D9/04 , F02D17/02 , F02D19/061 , F02D19/0642 , F02D19/081 , F02D41/0025 , F02D41/0082 , F02D41/02 , F02D41/123 , Y02T10/36
Abstract: The present disclosure relates to dual fuel internal combustion engines with multiple cylinder banks and/or cylinder subsets, and exhaust aftertreatment systems associated therewith. Systems and methods are disclosed that relate to engine operations involving fuelling control for fuel cutout of one or more of the cylinder banks and/or cylinder subsets in response to a fuel cutout event to increase gaseous fuel substitution on the other cylinder banks and/or cylinder subsets to satisfy the torque request and thermal management conditions of the aftertreatment system.
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公开(公告)号：US20170089273A1
公开(公告)日：2017-03-30
申请号：US15278330
申请日：2016-09-28
Applicant: Cummins Inc.
Inventor： Robert J. Thomas , Axel Otto Zur Loye , Timothy P. Lutz , Christopher Pollitt , Phanindra V. Garimella
CPC classification number: F02D19/081 , F02D19/0642 , F02D35/027 , F02D41/0025 , F02D41/0027 , F02D41/2416 , F02D41/2422 , F02D41/401 , F02D41/402 , F02D2041/1433 , F02D2200/1004 , F02D2250/31 , Y02T10/36
Abstract: Apparatuses, methods and systems for controlling operation of dual fuel engines are disclosed. One embodiment is a method for controlling operation of a dual fuel engine based upon a combustion index value. The combustion index may be empirically determined to provide desired engine operation at a plurality of ratios of gaseous fuel and liquid fuel. The desired engine operation may include a number of criteria including, for examiner an engine knock criterion and/or an exhaust emissions criterion. The combustion index value may be determined during operation of the engine based upon measured, estimated or predicted engine operating parameters. The combustion index value may be utilized to interpolate between a first engine operating map for a first ratio of gaseous fuel and liquid fuel and a second engine operating map for a second ratio of gaseous fuel and liquid fuel.
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Patent Agency Ranking
公开(公告)号：US10711723B2
公开(公告)日：2020-07-14
申请号：US15093282
申请日：2016-04-07
Applicant: Cummins Inc.
Inventor： Robert J. Thomas , Axel Otto zur Loye , Christopher Pollitt , Robert C. Borregard
IPC: F02D41/26 , F02D19/06 , F02D41/14 , F02D41/00 , F02D19/08 , F02D41/30 , F02D41/02 , F02D35/02 , F02M26/05 , F02M26/06
Abstract: Systems and methods for controlling fuelling of dual fuel internal combustion engines are disclosed. The control techniques maximize the substitution rate of gaseous fuel for the liquid fuel by determining a target fuelling amount for the liquid fuel and then regulating an actual fuelling amount of the liquid fuel in response to engine speed and power variations and by modulating the flow rate of the gaseous fuel to the engine.
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公开(公告)号：US10227934B2
公开(公告)日：2019-03-12
申请号：US15278330
申请日：2016-09-28
Applicant: Cummins Inc.
Inventor： Robert J. Thomas , Axel Otto Zur Loye , Timothy P. Lutz , Christopher Pollitt , Phanindra V. Garimella
Abstract: Apparatuses, methods and systems for controlling operation of dual fuel engines are disclosed. One embodiment is a method for controlling operation of a dual fuel engine based upon a combustion index value. The combustion index may be empirically determined to provide desired engine operation at a plurality of ratios of gaseous fuel and liquid fuel. The desired engine operation may include a number of criteria including, for examiner an engine knock criterion and/or an exhaust emissions criterion. The combustion index value may be determined during operation of the engine based upon measured, estimated or predicted engine operating parameters. The combustion index value may be utilized to interpolate between a first engine operating map for a first ratio of gaseous fuel and liquid fuel and a second engine operating map for a second ratio of gaseous fuel and liquid fuel.
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公开(公告)号：US10100723B2
公开(公告)日：2018-10-16
申请号：US15713047
申请日：2017-09-22
Applicant: Cummins Inc.
Inventor： J. Steven Kolhouse , Timothy P. Lutz , C. Larry Bruner , Christopher Pollitt
IPC: F02D19/06 , F02D41/00 , F02B47/10 , F02D41/12 , F02D9/04 , F02D17/02 , F02D19/08 , F02B75/22 , F02D41/02 , F02B3/06
Abstract: The present disclosure relates to dual fuel internal combustion engines with multiple cylinder banks and/or cylinder subsets, and exhaust aftertreatment systems associated therewith. Systems and methods are disclosed that relate to engine operations involving fuelling control for fuel cutout of one or more of the cylinder banks and/or cylinder subsets in response to a fuel cutout event to increase gaseous fuel substitution on the other cylinder banks and/or cylinder subsets to satisfy the torque request and thermal management conditions of the aftertreatment system.
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7.发明申请公开(公告)号：US20180003118A1
公开(公告)日：2018-01-04
申请号：US15537146
申请日：2014-12-17
Applicant: CUMMINS INC.
Inventor： Axel O. zur Loye , Christopher Pollitt , Timothy O. Lutz
CPC classification number: F02D41/1446 , F02B37/183 , F02D9/04 , F02D19/06 , F02D19/0605 , F02D23/00 , F02D41/0002 , F02D41/0007 , F02D41/0025 , F02D41/0082 , F02D41/0085 , F02D41/2422 , F02D41/401 , F02D2041/001 , F02D2200/0406 , F02D2200/1002 , F02D2200/101 , Y02T10/144 , Y02T10/36 , Y02T10/42
Abstract: Methods and systems of controlling operation of a dual fuel engine are provided, comprising determining a target exhaust temperature, sensing an actual exhaust temperature, determining an exhaust temperature deviation by comparing the actual exhaust temperature to the target exhaust temperature, comparing the exhaust temperature deviation to a threshold, adjusting at least one of an intake throttle, a wastegate, a compressor bypass valve, an exhaust throttle, a VGT and engine valve timing when the exhaust temperature deviation exceeds the threshold to control charge-flow to the engine, and continuing the adjusting until the exhaust temperature deviation is less than the threshold.
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公开(公告)号：US20160215723A1
公开(公告)日：2016-07-28
申请号：US15093282
申请日：2016-04-07
Applicant: Cummins Inc.
Inventor： Robert J. Thomas , Axel Otto zur Loye , Christopher Pollitt , Robert C. Borregard
Abstract: Systems and methods for controlling fuelling of dual fuel internal combustion engines are disclosed. The control techniques maximize the substitution rate of gaseous fuel for the liquid fuel by determining a target fuelling amount for the liquid fuel and then regulating an actual fuelling amount of the liquid fuel in response to engine speed and power variations and by modulating the flow rate of the gaseous fuel to the engine.
Abstract translation: 公开了用于控制双燃料内燃机的燃料加注的系统和方法。 控制技术通过确定液体燃料的目标加油量，然后响应于发动机转速和功率变化调节液体燃料的实际加油量，并通过调节液体燃料的流量来最大化用于液体燃料的气体燃料的替代速率 气体燃料发动机。
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