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公开(公告)号：US12104546B2
公开(公告)日：2024-10-01
申请号：US17895551
申请日：2022-08-25
Applicant: Caterpillar Inc.
Inventor： Andrew Joseph Loetz , Jaswinder Singh , David Todd Montgomery
CPC classification number: F02D19/081 , F02D19/0602 , F02D19/0644
Abstract: Operating a gaseous fuel engine system includes conveying hydrogen fuel and hydrocarbon fuel into a cylinder in a gaseous fuel engine for combustion. Operating a gaseous fuel engine system further includes receiving an increased engine power output request, boosting a power output of the gaseous fuel engine by varying a ratio of the hydrogen fuel and the hydrocarbon fuel combusted in the cylinder, and varying an in-cylinder combustion parameter based on the varying a ratio. Perturbation to a performance profile of the gaseous fuel engine is thereby limited. Related apparatus and control logic is also disclosed.
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公开(公告)号：US11920528B1
公开(公告)日：2024-03-05
申请号：US18198408
申请日：2023-05-17
Applicant: Caterpillar Inc.
Inventor： Michael T. Graziano, Jr. , Eric L. Schroeder , Christopher R. Gehrke , Jaswinder Singh , Patrick J. Seiler , Andrew J. Neaville , Geetika Dilawari , Zachary S. Engstrom
CPC classification number: F02D41/0027 , F02B43/12 , F02D41/38 , F02D2041/389 , F02D2200/024
Abstract: Operating a gaseous fuel engine system includes detecting preignition in one or more of a plurality of cylinders based on a monitored cylinder pressure during combustion of a gaseous fuel such as a gaseous hydrogen fuel. Operating a gaseous fuel engine system also includes reducing a fuel injection amount for the one or more of the plurality of cylinders to a derated fuel injection amount that is based on a timing of the detected preignition. Fuel injection amount may be reduced to a greater relative extent if detected preignition is early, and to a lesser relative extent if detected preignition is later, in an engine cycle. Related apparatus and control logic is also disclosed.
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公开(公告)号：US11280260B2
公开(公告)日：2022-03-22
申请号：US16912285
申请日：2020-06-25
Applicant: Caterpillar Inc.
Inventor： Paul Sai Keat Wang , Jaswinder Singh , David Ginter
IPC: F02B37/20 , F02D41/32 , F01N13/10 , F02M35/10 , F01P5/10 , F02M21/02 , F02D41/00 , F01N3/04 , F02B37/02 , F01P3/20
Abstract: Operating an engine system includes feeding a flow of exhaust to a turbine in a turbocharger, receiving a load step request, and increasing a speed of rotation of the turbocharger based on an increase in a fueling rate initiated in response to the load step request. Operating the engine system further includes limiting dissipation of heat energy of the flow of exhaust to the turbine to hasten an increase in the speed of rotation of the turbocharger, and increasing dissipation of heat energy from the flow of exhaust after satisfaction of the load step request. Varying of the dissipation of heat energy can be achieved by displacing an insulating fluid in the exhaust manifold with a heat exchange fluid such as water and/or engine coolant.
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公开(公告)号：US11261830B2
公开(公告)日：2022-03-01
申请号：US16531463
申请日：2019-08-05
Applicant: Caterpillar Inc.
Inventor： Ronald Silver , Jaswinder Singh , David M. Ginter , Paul Wang , Michael Bardell
Abstract: The present disclosure relates to exhaust treatment systems and engine systems. In one implementation, an engine system comprises an engine comprising an intake manifold and an exhaust manifold, the engine configured to combust a fuel-air mixture received via the intake manifold and produce a flow of exhaust gases via the exhaust manifold. The engine system also comprises a turbocharger comprising a turbine, an exhaust passageway fluidly connecting the exhaust manifold of the engine to the turbine and an intake passageway fluidly connected to the intake manifold of the engine for supplying the fuel-air mixture, a catalyzed member positioned along the exhaust passageway between the engine and the turbine, and an exhaust gas recirculation (EGR) loop fluidly connected downstream of the catalyzed member and fluidly connected to the exhaust passageway and the intake passageway.
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公开(公告)号：US20210404375A1
公开(公告)日：2021-12-30
申请号：US16912285
申请日：2020-06-25
Applicant: Caterpillar Inc.
Inventor： Paul Sai Keat Wang , Jaswinder Singh , David Ginter
IPC: F02B37/20 , F02D41/32 , F01N13/10 , F02M35/10 , F01P5/10 , F01P3/20 , F02M21/02 , F02D41/00 , F01N3/04 , F02B37/02
Abstract: Operating an engine system includes feeding a flow of exhaust to a turbine in a turbocharger, receiving a load step request, and increasing a speed of rotation of the turbocharger based on an increase in a fueling rate initiated in response to the load step request. Operating the engine system further includes limiting dissipation of heat energy of the flow of exhaust to the turbine to hasten an increase in the speed of rotation of the turbocharger, and increasing dissipation of heat energy from the flow of exhaust after satisfaction of the load step request. Varying of the dissipation of heat energy can be achieved by displacing an insulating fluid in the exhaust manifold with a heat exchange fluid such as water and/or engine coolant.
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Patent Agency Ranking
公开(公告)号：US10458312B2
公开(公告)日：2019-10-29
申请号：US15656944
申请日：2017-07-21
Applicant: Caterpillar Inc.
Inventor： Paul Wang , David Ginter , Jaswinder Singh , Arnold Kim
Abstract: A system for controlling enriched prechamber stoichiometry includes a prechamber ignition device, and an ignition control system that includes a sensor structured to measure an amount of at least one of CO2 or O2 in a prechamber, an engine timing sensor, a fuel quality sensor, and an electronic control unit. The electronic control unit is structured to receive signals from each of the sensors and determine an air-fuel ratio of the prechamber for comparison with a target air-fuel ratio, and produce a fuel delivery signal based on the comparison.
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公开(公告)号：US12065992B2
公开(公告)日：2024-08-20
申请号：US18100009
申请日：2023-01-23
Applicant: Caterpillar Inc.
Inventor： Jaswinder Singh , Michael Bardell , Yongxian Gu , Eric L. Schroeder , Patrick J. Seiler
IPC: F02M21/02
CPC classification number: F02M21/0281 , F02M21/0206 , F02M21/023 , F02M21/0278
Abstract: A gaseous fuel engine system includes a hydrogen fuel supply, an engine housing having an intake port extending to a cylinder, and an intake runner. The intake runner includes a valve mount attached to a conduit and having a valve mounting face, and a gaseous fuel admission valve is mounted upon the valve mounting face. A hydrogen fuel passage extends from the valve mount through the conduit and is oriented angularly to at least one of a clamping face of the intake runner or the valve mounting face. Related apparatus and methodology is also disclosed.
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公开(公告)号：US20240247622A1
公开(公告)日：2024-07-25
申请号：US18100009
申请日：2023-01-23
Applicant: Caterpillar Inc.
Inventor： Jaswinder Singh , Michael Bardell , Yongxian Gu , Eric L. Schroeder , Patrick J. Seiler
IPC: F02M21/02
CPC classification number: F02M21/0281 , F02M21/0206 , F02M21/023 , F02M21/0278
Abstract: A gaseous fuel engine system includes a hydrogen fuel supply, an engine housing having an intake port extending to a cylinder, and an intake runner. The intake runner includes a valve mount attached to a conduit and having a valve mounting face, and a gaseous fuel admission valve is mounted upon the valve mounting face. A hydrogen fuel passage extends from the valve mount through the conduit and is oriented angularly to at least one of a clamping face of the intake runner or the valve mounting face. Related apparatus and methodology is also disclosed.
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9.发明授权公开(公告)号：US11959414B2
公开(公告)日：2024-04-16
申请号：US17702292
申请日：2022-03-23
Applicant: Caterpillar Inc.
Inventor： Eric Lee Schroeder , Andrew Joseph Loetz , Jaswinder Singh , Yongxian Gu , Jonathan William Anders , Naga Krishna Chaitanya Kavuri
CPC classification number: F02B43/12 , F02B19/12 , F02B19/18 , F02F3/28 , F02M21/0209 , F02M21/023
Abstract: Operating a gaseous fuel engine includes spark-igniting gaseous hydrogen fuel and air, and propagating combustion gases of the spark-ignited mixture outwardly from a spark gap. The propagating combustion gases are impinged upon a cone surface of a piston so as to limit a flame area of the propagating combustion gases. Additional gaseous hydrogen fuel and air is ignited in the combustion cylinder by way of the propagating combustion gases to urge a piston toward a bottom-dead-center position.
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公开(公告)号：US20230358186A1
公开(公告)日：2023-11-09
申请号：US17737528
申请日：2022-05-05
Applicant: Caterpillar Inc.
CPC classification number: F02D41/0027 , F02D41/1452
Abstract: Operating an engine system includes combusting a gaseous hydrogen fuel (H2) and a gaseous hydrocarbon fuel (HC) at a first substitution ratio in a cylinder in an engine, determining at least one of an H2 fueling command or an HC fueling command based on an H2 availability input and an H2 cost, and outputting the H2 fueling command and the HC fueling command to an H2 injector and an HC admission valve, respectively. Operating the engine system further includes combusting H2 and HC at a varied substitution ratio based on the H2 fueling command and the HC fueling command. At least one of the H2 fueling command or the HC fueling command may be based on a monitored CO2 exhaust level which may be used to populate a stored history of CO2 output.
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