公开(公告)号：US20230417206A1

公开(公告)日：2023-12-28

申请号：US17809483

申请日：2022-06-28

申请人： Caterpillar Inc.

发明人： Eric Lee Schroeder ,  Richard Christopher Kulaga ,  David T. Montgomery

IPC分类号： F02M27/02 ,  B01D53/22 ,  B01D53/26 ,  C01B3/32 ,  C01B3/50 ,  C01B32/50 ,  F02M25/00 ,  F02B63/04 ,  B63B25/12 ,  B63H21/38 ,  F02M31/20 ,  F02B51/02

CPC分类号： F02M27/02 ,  C01B2210/0009 ,  B01D53/265 ,  C01B3/323 ,  C01B3/501 ,  C01B32/50 ,  F02M25/00 ,  F02B63/042 ,  B63B25/12 ,  B63H21/38 ,  F02M31/20 ,  F02B51/02 ,  C01B2203/0233 ,  C01B2203/1223 ,  C01B2203/0405 ,  C01B2203/0475 ,  C01B2203/0495 ,  C01B2210/0062 ,  B01D53/229

摘要： An inert blanket system includes a reformer that produces hydrogen gas and carbon dioxide. The hydrogen gas is separated from the carbon dioxide. The carbon dioxide is ported to a vapor region of a tank to reduce the flammability of the gases in the vapor region of the tank. Excess carbon dioxide is ported to an overflow system designed to store the excess carbon dioxide for future use or to sequester the carbon dioxide.

公开(公告)号：US20230358186A1

公开(公告)日：2023-11-09

申请号：US17737528

申请日：2022-05-05

申请人： Caterpillar Inc.

发明人： Eric Lee Schroeder ,  Michael Todd Graziano, JR. ,  Jaswinder Singh ,  David Todd Montgomery

IPC分类号： F02D41/00 ,  F02D41/14

CPC分类号： F02D41/0027 ,  F02D41/1452

摘要： 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.

公开(公告)号：US20230304436A1

公开(公告)日：2023-09-28

申请号：US17702292

申请日：2022-03-23

申请人： Caterpillar Inc.

发明人： Eric Lee Schroeder ,  Andrew Joseph Loetz ,  Jaswinder Singh ,  Yongxian Gu ,  Jonathan William Anders ,  Naga Krishna Chaitanya Kavuri

IPC分类号： F02B43/12 ,  F02F3/28 ,  F02B19/12 ,  F02M21/02 ,  F02B19/18

CPC分类号： F02B43/12 ,  F02F3/28 ,  F02B19/12 ,  F02M21/0209 ,  F02M21/023 ,  F02B19/18

摘要： 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.

公开(公告)号：US11639698B1

公开(公告)日：2023-05-02

申请号：US17717847

申请日：2022-04-11

申请人： Caterpillar Inc.

发明人： Eric Lee Schroeder ,  Kenth I Svensson ,  Richard C Kulaga

IPC分类号： F02D41/40 ,  F02D41/14 ,  F02D35/02 ,  F02M43/04 ,  F02D41/00

摘要： A dual fuel system includes a liquid pilot fuel supply, a liquid main fuel supply, and a fuel injection apparatus. The dual fuel system further includes a fueling control unit coupled with a cylinder pressure sensor and a NOx sensor, and structured to vary, via outputting a fueling control command to a main fuel injection control valve, fuel delivery parameters each on the basis of at least one of a cylinder pressure parameter or a NOx parameter. The fueling control unit compensates via the varying fuel delivery parameters for a change to a liquid main fuel composition such as a change from a first alcohol fuel or blend to a second alcohol fuel or blend.

公开(公告)号：US11384708B1

公开(公告)日：2022-07-12

申请号：US17355680

申请日：2021-06-23

申请人： Caterpillar Inc.

发明人： Eric Lee Schroeder ,  David Todd Montgomery ,  Arnold Myoungjin Kim ,  Michael Bardell ,  Nikolas Karl Landin ,  Kenth I. Svensson

IPC分类号： F02D41/30 ,  F02D19/06 ,  F02M35/104 ,  F02M31/20

摘要： Operating an engine includes injecting a liquid alcohol fuel such as methanol into a stream of compressed intake air at an upstream injection location, and injecting the liquid fuel at a plurality of downstream injection locations into a plurality of streams of the compressed intake air from an intake manifold to combustion cylinders in the engine. A fueling control unit apportions a total injected quantity of the liquid fuel between the upstream injection location and the plurality of downstream injection locations based on a temperature parameter of the compressed intake air. The compressed intake air is combusted with the liquid fuel and a compression ignition pilot fuel in the plurality of combustion cylinders.