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    A FUEL INJECTION ARRANGEMENT AND A HYDROGEN INTERNAL COMBUSTION ENGINE
    1.
    发明申请
    A FUEL INJECTION ARRANGEMENT AND A HYDROGEN INTERNAL COMBUSTION ENGINE 有权

    公开(公告)号：US20250059937A1

    公开(公告)日：2025-02-20

    申请号：US18720133

    申请日：2021-12-17

    Applicant: VOLVO TRUCK CORPORATION

    Inventor： Jan EISMARK ,  Rickard EHLESKOG ,  Gustavo HINDI ,  Tommy SIMONSSON

    IPC: F02M21/02 ,  F16K1/54

    Abstract: A fuel injection arrangement admits a flow of hydrogen into a combustion chamber of hydrogen internal combustion engine. The fuel injection arrangement has a nozzle cap and an inlet valve arrangement. An inner surface of the nozzle cap comprises a nozzle protrusion protruding radially towards an envelope surface of a flow guiding portion of the inlet valve arrangement. The nozzle protrusion is arranged axially between a valve protrusion of the inlet valve arrangement and an outlet of the nozzle cap. The valve protrusion and the nozzle protrusion at least partly overlap in a radial direction.

    GAS INJECTOR COMPRISING A VACUUM-CONTROLLED SECOND SEALING SEAT
    3.
    发明申请
    GAS INJECTOR COMPRISING A VACUUM-CONTROLLED SECOND SEALING SEAT 有权

    公开(公告)号：US20250035073A1

    公开(公告)日：2025-01-30

    申请号：US18710172

    申请日：2022-09-26

    Applicant: Robert Bosch GmbH

    Inventor： Dietmar Schmieder ,  Hubert Stier

    IPC: F02M21/02

    Abstract: A gas injector for injecting a gaseous medium. The gas injector includes: a closing element which opens and closes a passage opening at a first sealing seat; an actuator for actuating the closing element; a restoring element for restoring the closing element; a second sealing seat which is located between a gas supply line connection and the first sealing seat in the flow direction of the gaseous medium and opens and closes a gas flow path in the gas injector; a vacuum connection which is located upstream of the second sealing seat in the flow direction of the gas injector; and a control valve which is fluidically connected to the vacuum connection and is designed to connect the vacuum connection to a vacuum source in order to open the second sealing seat.

    DEVICE FOR DIRECT INJECTION OF A GASEOUS FUEL
    4.
    发明申请
    DEVICE FOR DIRECT INJECTION OF A GASEOUS FUEL 有权

    公开(公告)号：US20250012240A1

    公开(公告)日：2025-01-09

    申请号：US18711522

    申请日：2022-11-21

    Applicant: LIEBHERR-COMPONENTS DEGGENDORF GMBH

    Inventor： Mario D'ONOFRIO ,  Giovanni CORBINELLI ,  Francois MASSON ,  Richard PIRKL

    IPC: F02M21/02 ,  F02M55/04

    Abstract: The present invention relates to a device for direct injection of a gaseous fuel, in particular hydrogen, which device comprises: a pressure-control unit which is designed to convert a supplied variable pressure level of the gaseous fuel into a fixed constant output pressure level; a distributor unit which is connected to at least one injector for direct injection of the gaseous fuel, which has been guided through the pressure-control unit, into a combustion chamber; and a fluid connection between the pressure-control unit and the distributor unit in order to guide the gaseous fuel at a constant output pressure downstream towards the distributor unit. The device is characterized in that a flow-control valve is disposed along the fluid connection and designed to adjust the constant output pressure level of the gaseous fuel to a desired target pressure not exceeding the output pressure level.

    Conditioning of a pre-chamber gas flow for a combustion engine
    5.
    发明授权
    Conditioning of a pre-chamber gas flow for a combustion engine 有权

    公开(公告)号：US12163492B2

    公开(公告)日：2024-12-10

    申请号：US18287700

    申请日：2022-04-12

    Applicant: Caterpillar Energy Solutions GmbH

    Inventor： Enrico Drehobl ,  Friedrich Schaefer

    IPC: F02M21/02 ,  F02B19/00

    Abstract: The present invention pertains to arrangements for a pre-chamber of a combustion engine as well as pre-chambers comprising such arrangements, in particular to condition or temper a gas flow within a gas-purged pre-chamber prior to entering a combustion area. Accordingly, an arrangement for a pre-chamber gas valve of a combustion engine is suggested, comprising a housing having an outer surface and comprising a channel, a first end of the channel being in fluid communication with the outer surface and a second end of the channel being connectable to a valve seat of the pre-chamber gas valve, and at least one protrusion extending from the outer surface of the housing. The first end of the channel is arranged upstream of the second end of the channel and downstream of at least one protrusion, wherein the arrangement is configured to absorb heat from a combustion portion of the combustion engine arranged downstream of the second end and to temper a gas upstream of the second end only using said heat, when the arrangement is in a mounted state.

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