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公开(公告)号：US11873776B1
公开(公告)日：2024-01-16
申请号：US17816930
申请日：2022-08-02
Applicant: Caterpillar Inc.
Inventor： Andrew O. Marrack , Bradley D. Ferguson , Eric L. Schroeder
CPC classification number: F02D41/02 , F02D41/221 , F02D41/401 , F02D2041/2058 , F02D2041/2089 , F02D2041/2093 , F02D2041/224
Abstract: A fuel injection system includes a first fuel injector having a first electronically-controlled valve and a first injection valve configured to inject fuel when the first electronically-controlled valve is actuated. A second fuel injector has a second electronically-controlled valve and a second injection valve configured to inject fuel when the second electronically-controlled valve is actuated. The fuel injection system also includes a single fuel injector driver configured to actuate the first electronically-controlled valve and the second electronically-controlled valve.
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公开(公告)号：US20190178149A1
公开(公告)日：2019-06-13
申请号：US15839145
申请日：2017-12-12
Applicant: Caterpillar Inc.
Inventor： Eric L. Schroeder , Ryan T. Sunley
Abstract: A supercharger system for an engine having a turbocharger is provided. The supercharger system includes a supercharger driver and an air inlet. The supercharger system also includes a supercharger compressor mechanically coupled to the supercharger driver. The supercharger compressor includes a supercharger compressor inlet and a supercharger compressor outlet. The supercharger compressor inlet is in fluid communication with the air inlet. The supercharger compressor outlet is in fluid communication with a turbine inlet associated with the turbocharger.
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公开(公告)号：US20240360806A1
公开(公告)日：2024-10-31
申请号：US18766727
申请日：2024-07-09
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：US11840979B1
公开(公告)日：2023-12-12
申请号：US18100003
申请日：2023-01-23
Applicant: Caterpillar Inc.
Inventor： Jaswinder Singh , Michael Bardell , Yongxian Gu , Eric L. Schroeder , Patrick J. Seiler
CPC classification number: F02D41/402 , F02D41/009 , F02D41/3094
Abstract: Operating a gaseous hydrogen fuel engine includes controlling an injection timing of a gaseous hydrogen fuel injected into a flow of pressurized intake air so as to produce a leading cooling flow of pressurized intake air into a cylinder in an engine, a trailing purging flow through an intake conduit, and a middle flow of both pressurized intake air and gaseous hydrogen fuel into the cylinder. Undesired combustion such as preignition and/or backfire can be limited. Related apparatus and control logic is also disclosed.
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公开(公告)号：US20190226389A1
公开(公告)日：2019-07-25
申请号：US15879647
申请日：2018-01-25
Applicant: Caterpillar Inc.
Inventor： Jeremy Byrd , Eric L. Schroeder , Liangtao Zhu , Arvind Sivasubramanian , Ryan T. Sunley , Craig P. Hittle , Aaron L. Robinson
IPC: F02B37/02 , F02B37/007 , F02C6/12 , F01N13/00 , F02D13/02
Abstract: An internal combustion engine having an exhaust log structure onto which a plurality of turbochargers is connected, each turbocharger having a turbine connected to the exhaust log structure and having an inlet fluidly connectable to a respective one of the plurality of outlet ports, an exhaust valve disposed at a turbine outlet such that the flow of exhaust gas out of the turbine is fluidly blocked, and an actuator associated with the exhaust valve and operating to move the exhaust valve from a closed position to an open position and vice versa. An electronic controller provides a command to the actuator to move the exhaust valve between the open and closed positions and is programmed to selectively open two one or more exhaust valves based on an operating condition of the engine.
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Patent Agency Ranking
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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公开(公告)号：US11815055B1
公开(公告)日：2023-11-14
申请号：US18060931
申请日：2022-12-01
Applicant: Caterpillar Inc.
Inventor： Dana R. Coldren , Lifeng Wang , Eric L. Schroeder
CPC classification number: F02M43/04 , F02M47/046 , F02M51/06 , F02M55/002
Abstract: A fuel injector capable of injecting a plurality of different fuels in a single fuel injection event includes a body including a primary fuel path and a pilot fuel path and a first plunger in fluid communication with the pilot fuel path. The fuel injector also includes a second plunger in fluid communication with the primary fuel path and with the pilot fuel path, a hydraulic control chamber within the pilot fuel path, and an injection valve at which the primary fuel path and the pilot fuel path connect to each other.
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公开(公告)号：US10247052B2
公开(公告)日：2019-04-02
申请号：US15663870
申请日：2017-07-31
Applicant: Caterpillar Inc.
Inventor： Craig P. Hittle , Eric L. Schroeder
Abstract: A guide assembly for a valve lifter of an engine. The valve lifter is at least partly received within a bore of a body of the engine and an end portion of the valve lifter is exposed to an outside of the body. The guide assembly includes a pin and a guide. The pin is adapted to be fixedly coupled to the end portion of the valve lifter, while the guide is adapted to be coupled to the body. The guide defines a channel. The pin is received within the channel and cooperates with the channel to facilitate a movement of the valve lifter along an axis of the bore and to restrict a rotation of the valve lifter about the axis of the bore.
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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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