公开(公告)号：US12006886B1

公开(公告)日：2024-06-11

申请号：US18179902

申请日：2023-03-07

Applicant: Caterpillar Inc.

Inventor： Ian Axel Lohrisch ,  David T. Montgomery

IPC: F02D19/06

CPC classification number: F02D19/0671 ,  F02D19/0647 ,  F02D19/0665

Abstract: An internal combustion engine system is described herein. The system uses reactor to create pilot fuel from the primary fuel to assist in the ignition of the primary fuel. A controller is used to maintain an operational range of a level of the pilot fuel in an accumulator. The accumulator acts as a buffer to allow the engine to continue to receive the pilot fuel during dynamic and changing conditions of the engine. The controller increases or decreases the rate of production of the pilot fuel by a pilot fuel system to maintain the operational range of the level of the pilot fuel in the accumulator. The controller can receive inputs such as pilot fuel level or power signals from the engine to adjust the rate of production of the pilot fuel to meet engine demand.

公开(公告)号：US11732843B2

公开(公告)日：2023-08-22

申请号：US17379935

申请日：2021-07-19

Applicant: Caterpillar Inc.

Inventor： David T. Montgomery

IPC: F17C7/00 ,  F17C1/00

CPC classification number: F17C1/00 ,  F17C7/00 ,  F17C2203/0619 ,  F17C2205/0338 ,  F17C2221/012 ,  F17C2265/066 ,  F17C2270/0184

Abstract: A storage tank includes a tank wall, a pressure regulator, a low-pressure coupling, and a fill coupling. The tank wall of the storage tank is configured to contain a stored fluid at an internal pressure within the tank wall, the tank wall including an outer layer, an inner layer, and a regulator mount. The pressure regulator of the storage tank is connected to the regulator mount and is configured to receive a flow rate of the stored fluid and reduce the stored fluid from the internal pressure to an output pressure. The flow rate of the stored fluid is provided, via the low pressure coupling and at the output pressure to an external system. The fill coupling extends through the tank wall and receives the stored fluid from a fluid source to be stored within the storage tank.

公开(公告)号：US11643987B2

公开(公告)日：2023-05-09

申请号：US17468387

申请日：2021-09-07

Applicant: Caterpillar Inc.

Inventor： David T. Montgomery ,  David M. Ginter ,  Michael Bardell ,  Arnold Kim ,  Kenth Svensson

IPC: F02D41/00 ,  F02D35/02 ,  F02M21/02 ,  F02D41/14 ,  F02D41/40

CPC classification number: F02D41/0027 ,  F02D35/023 ,  F02D41/1446 ,  F02D41/1448 ,  F02D41/403 ,  F02M21/0227

Abstract: A system includes a fuel tank and a dehydration reactor that are configured to provide a primary fuel and a pilot fuel to a power system. The fuel tank is configured to store the primary fuel and is fluidly connected to a reactor feed line and a primary fuel line provide the primary fuel. The dehydration reactor is configured to receive the primary fuel via the reactor feed line and convert a portion of the primary fuel to the pilot fuel and a byproduct. The power system is configured to receive the pilot fuel from the dehydration reactor to initiate combustion of the primary fuel. The power system also includes a cylinder with an internal piston that receives the pilot fuel and the primary fuel, contains the combustion reaction, and generates power from the combustion reaction; and contains the combustion reaction. A pilot fuel injector provides the pilot fuel to the cylinder at a first time to initiate combustion and a primary fuel injector provides the pilot fuel to the cylinder at to generate power via the power system.

公开(公告)号：US11459992B1

公开(公告)日：2022-10-04

申请号：US17347595

申请日：2021-06-15

Applicant: Caterpillar Inc.

Inventor： David T. Montgomery

IPC: F02N9/04 ,  F02M21/02 ,  F02D41/00 ,  F02D41/06 ,  F02D19/02

Abstract: A delay circuit for providing natural gas to an engine and systems, components, and methods thereof can comprise a first valve to selectively pass the natural gas from a starter motor configured to start the engine; a delay volume to receive the natural gas from the first valve; and a second valve to selectively pass the natural gas from the delay volume to an inlet of the engine. The natural gas is provided to the inlet of the engine via the delay system according to a predetermined delay by controlling the first valve and the second valve to selectively pass the natural gas to the inlet of the engine according to the predetermined delay.

公开(公告)号：US12078115B1

公开(公告)日：2024-09-03

申请号：US18338159

申请日：2023-06-20

Applicant: Caterpillar Inc.

Inventor： Kenth I. Svensson ,  David T. Montgomery

IPC: F02D19/06 ,  F02B51/02 ,  F02D19/08 ,  F02M21/02 ,  F02M27/02 ,  F02D41/40

CPC classification number: F02D19/0671 ,  F02B51/02 ,  F02D19/0647 ,  F02D19/0655 ,  F02D19/081 ,  F02M21/0227 ,  F02M27/02 ,  F02D19/0642 ,  F02D41/403 ,  F02D2200/0606

Abstract: An internal combustion engine system is described herein. The system uses a reactor to create pilot fuel from the primary fuel to assist in the ignition of the primary fuel. The system uses one or more heaters to increase the temperature of the primary fuel to an operational temperature of a reactor used to convert the primary fuel in a dehydration reaction. The heaters use waste heat generated by the operation of the engine. The waste heat can be lubricant used to remove heat from components of the engine as well as heat from the exhaust of the engine, for example. A controller is used to maintain an operational range of a level of the pilot fuel in an accumulator. The accumulator acts as a buffer to allow the engine to continue to receive the pilot fuel during dynamic and changing conditions of the engine.

公开(公告)号：US20230330595A1

公开(公告)日：2023-10-19

申请号：US17720991

申请日：2022-04-14

Applicant: Caterpillar Inc.

Inventor： David M. Ginter ,  Nikolas Karl Landin ,  David T. Montgomery

IPC: B01D53/62 ,  C01B3/16 ,  B01D53/94

CPC classification number: B01D53/62 ,  B01D53/94 ,  C01B3/16 ,  B01D2257/504 ,  B01D2258/01 ,  C01B2203/0233 ,  C01B2203/0475 ,  C01B2203/066

Abstract: A carbon capture system includes a hydrogen production module. The hydrogen production module is used to control the amount of hydrogen entering an internal combustion engine to reduce an amount of water vapor generated by the internal combustion engine, thereby increasing the efficiency of the carbon capture device. If too much water vapor is detected in an exhaust of the engine, the amount of hydrogen produced by a hydrogen production module can be increased, thereby reducing the amount of hydrogen entering the engine and reducing the amount of water vapor generated by the engine. A reformer catalyst can be used by the hydrogen production module to remove at least a portion of hydrogen in a fuel stream of the engine.

公开(公告)号：US20230070006A1

公开(公告)日：2023-03-09

申请号：US17468387

申请日：2021-09-07

Applicant: Caterpillar Inc.

Inventor： David T. Montgomery ,  David M. Ginter ,  Michael Bardell ,  Arnold Kim ,  Kenth Svensson

IPC: F02D41/00 ,  F02D35/02 ,  F02D41/40 ,  F02D41/14 ,  F02M21/02

Abstract: A system includes a fuel tank and a dehydration reactor that are configured to provide a primary fuel and a pilot fuel to a power system. The fuel tank is configured to store the primary fuel and is fluidly connected to a reactor feed line and a primary fuel line provide the primary fuel. The dehydration reactor is configured to receive the primary fuel via the reactor feed line and convert a portion of the primary fuel to the pilot fuel and a byproduct. The power system is configured to receive the pilot fuel from the dehydration reactor to initiate combustion of the primary fuel. The power system also includes a cylinder with an internal piston that receives the pilot fuel and the primary fuel, contains the combustion reaction, and generates power from the combustion reaction; and contains the combustion reaction. A pilot fuel injector provides the pilot fuel to the cylinder at a first time to initiate combustion and a primary fuel injector provides the pilot fuel to the cylinder at to generate power via the power system.

公开(公告)号：US20170106328A1

公开(公告)日：2017-04-20

申请号：US14887601

申请日：2015-10-20

Applicant: Caterpillar Inc.

Inventor： David T. Montgomery ,  Victor L. Sheldon, JR.

IPC: B01D53/04 ,  F02C7/055 ,  F02M35/024 ,  F02C7/057 ,  F02M35/10 ,  C10L3/10 ,  F02C7/22

CPC classification number: B01D53/0454 ,  B01D53/0446 ,  B01D2253/108 ,  B01D2256/24 ,  B01D2257/7022 ,  B01D2257/7025 ,  B01D2259/40009 ,  B01D2259/402 ,  C10L3/10 ,  C10L3/101 ,  C10L2270/02 ,  C10L2270/023 ,  C10L2270/026 ,  C10L2270/10 ,  C10L2290/542 ,  C10L2290/548 ,  F02C7/055 ,  F02C7/057 ,  F02C7/222 ,  F02M35/024 ,  F02M35/10216

Abstract: A hydrocarbon separation system for an engine fuel supply system is disclosed. The hydrocarbon separation system may include an untreated gas conduit configured to transport a raw gas stream including methane, ethane and higher carbon chainlength hydrocarbon molecules. The system may also include a separator downstream of and fluidly coupled to the untreated gas conduit configured to segregate methane or ethane of the raw gas stream from the higher carbon chainlength hydrocarbon molecules of the raw gas stream. A treated gas conduit may be located downstream of and fluidly coupled to the separator and be configured to transport the methane or ethane of the raw gas stream away from the separator. Lastly, the system may include an electronic controller configured to receive a breakthrough signal and transmit a regeneration signal in response to the breakthrough signal.

公开(公告)号：US12191542B2

公开(公告)日：2025-01-07

申请号：US17804117

申请日：2022-05-26

Applicant: Caterpillar Inc.

Inventor： David Ginter ,  David T. Montgomery

IPC: H01M8/04 ,  H01M8/04111 ,  H01M8/04119 ,  H01M8/04492 ,  H01M8/04537 ,  H01M8/04701 ,  H01M8/04746

Abstract: A system for detecting humidity level at a cathode of a fuel cell stack including one or more PEMFCs and determining a flooding probability of the stack based on the humidity level, includes a stack including a plurality of PEMFCs, each PEMFC including an exhaust; voltage detector; humidity detector; and controller. The controller may be configured to: receive a voltage as measured at an anode of one or more of the PEMFCs with the voltage detector; determine a humidity level at the exhaust of the one or more of the PEMFCs; and implement one or more actions based on the voltage and the humidity level, the actions including: reduce a load on the PEMFC; increase an air flow at a cathode of the one or more PEMFCs; decrease an inlet humidity at an inlet to the one or more PEMFCs; or increase a temperature of the one or more PEMFCs.

公开(公告)号：US20230234845A1

公开(公告)日：2023-07-27

申请号：US17585098

申请日：2022-01-26

Applicant: Caterpillar Inc.

Inventor： Michael Bardell ,  David T. Montgomery

IPC: C01B3/32 ,  C01B3/52

CPC classification number: C01B3/323 ,  C01B3/52 ,  C01B2203/04 ,  C01B2203/1011 ,  C01B2203/1223 ,  C01B2203/84 ,  C01B2203/1685

Abstract: A system is disclosed. The system can store a fuel reagent such as methanol for conversion into hydrogen to power one or more facility systems via a backup power system. A reactor controller can monitor a power demand of the one or more facility systems and determine whether the power demand is met by a primary power system. The fuel reagent can be provided to a fuel reactor in response to the reactor controller determining that the one or more facility systems are operating at a power deficit to generate an amount of hydrogen that, when provided to the backup power system, causes the backup power system to generate an amount of power that meets or exceeds the power deficit.