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公开(公告)号：US20170204792A1
公开(公告)日：2017-07-20
申请号：US15403895
申请日：2017-01-11
Applicant: Cummins Inc.
Inventor： Robert J. Thomas , David Lambert
Abstract: One exemplary embodiment is a system comprising a dual-fuel engine structured to selectably combust a first fuel type and a second fuel type, and an electronic control system in operative communication with the dual-fuel engine. The electronic control system is structured to control a transition of the dual-fuel engine from a dual-fuel mode to a single-fuel mode. After initiating the transition from the dual-fuel mode to the single-fuel mode, the control system stops provision of the second fuel type, requires combustion using control parameters configured for the dual-fuel mode until a transition ventilation condition is satisfied, permits non-emergency commanded engine shutdown only if the transition ventilation condition is satisfied.
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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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公开(公告)号：US10920687B2
公开(公告)日：2021-02-16
申请号：US15351721
申请日：2016-11-15
Applicant: Cummins Inc.
Inventor： Ming-Feng Hsieh , Andrew G. Kitchen , Axel Otto zur Loye , Jinghua Zhong , Richard A. Booth , Robert J. Thomas , Jisang Sun
IPC: G06G7/70 , F02D37/02 , F02P5/145 , F02D41/14 , F02D41/00 , F02B37/16 , F02B37/18 , F02B37/24 , F02D41/18
Abstract: Control of a spark ignited internal combustion in response to an exhaust manifold pressure measurement of an engine is disclosed. An engine out NOx amount for at least one cylinder is determined at least in part in response to the exhaust manifold pressure measurement and a brake mean effective pressure of the at least one cylinder. An operating condition of the engine is adjusted in response to the engine out NOx amount.
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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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Patent Agency Ranking
公开(公告)号：US20180135541A1
公开(公告)日：2018-05-17
申请号：US15351721
申请日：2016-11-15
Applicant: Cummins Inc.
Inventor： Ming-Feng Hsieh , Andrew G. Kitchen , Axel Otto zu Loye , Jinghua Zhong , Richard A. Booth , Robert J. Thomas , Jisang Sun
CPC classification number: F02D37/02 , F02B37/16 , F02B37/18 , F02B37/24 , F02D41/0007 , F02D41/1446 , F02D41/1448 , F02D41/146 , F02D41/1462 , F02D41/18 , F02D2041/001 , F02D2200/1002 , F02P5/145 , Y02T10/144
Abstract: Control of a spark ignited internal combustion in response to an exhaust manifold pressure measurement of an engine is disclosed. An engine out NOx amount for at least one cylinder is determined at least in part in response to the exhaust manifold pressure measurement and a brake mean effective pressure of the at least one cylinder. An operating condition of the engine is adjusted in response to the engine out NOx amount.
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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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公开(公告)号：US20230124692A1
公开(公告)日：2023-04-20
申请号：US17914092
申请日：2021-03-23
Applicant: Cummins Inc.
Inventor： Mihir Desai , Luke T. Jennings , Robert J. Thomas
IPC: F01P7/16
Abstract: A controller includes at least one processor coupled to a memory storing instructions that, when executed by the at least one processor, cause the at least one processor to: determine a target engine outlet coolant temperature for a coolant in an engine system; determine an adjustment to a temperature of the coolant based on a determined engine inlet coolant temperature and the target engine outlet coolant temperature; and, alter a flow of the coolant by controlling a coolant valve in response to the determination of the adjustment to the temperature of the coolant.
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公开(公告)号：US11168624B2
公开(公告)日：2021-11-09
申请号：US16902698
申请日：2020-06-16
Applicant: Cummins Inc.
Inventor： Mayura H Halbe , Robert J. Thomas , Ming-Feng Hsieh
Abstract: Systems, methods and apparatus are disclosed for producing a target compressor outlet pressure that is based on a desired pressure differential across an intake throttle of an internal combustion engine and an intake manifold pressure by opening or closing a compressor recirculation valve and a turbocharger wastegate to commanded positions based on the target compressor outlet pressure.
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公开(公告)号：US20210079858A1
公开(公告)日：2021-03-18
申请号：US17069461
申请日：2020-10-13
Applicant: Cummins Inc.
Inventor： Ming-Feng Hsieh , Andrew G. Kitchen , Axel Otto zu Loye , Jinghua Zhong , Richard A. Booth , Robert J. Thomas , Jisang Sun
Abstract: Control of a spark ignited internal combustion in response to an exhaust manifold pressure measurement of an engine is disclosed. An engine out NOx amount for at least one cylinder is determined at least in part in response to the exhaust manifold pressure measurement and a brake mean effective pressure of the at least one cylinder. An operating condition of the engine is adjusted in response to the engine out NOx amount.
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