GAS INJECTOR HAVING A SHORT AXIAL DESIGN
    1.
    发明公开

    公开(公告)号:US20240209821A1

    公开(公告)日:2024-06-27

    申请号:US18554974

    申请日:2022-02-25

    申请人: Robert Bosch GmbH

    发明人: Martin Mueller

    IPC分类号: F02M63/00 F02M21/02

    摘要: A gas injector for injecting a gaseous fuel. The gas injector includes: a magnetic actuator having an armature, an inner pole and a coil; a closing element, having a valve needle, the closing element opening and closing a gas path at a sealing seat, the armature being connected to the closing element; a closed off lubricant chamber which is filled with a lubricant and in which the armature is arranged, the lubricant ensuring lubrication of the armature; a flexible sealing element sealing the lubricant chamber with respect to the gas path; a restoring element which resets the closing element to a closed starting position; and a first needle guide formed between a guide sleeve and the valve needle. The first needle guide is arranged in the lubricant chamber radially inside the flexible sealing element, and the restoring element is arranged in the lubricant chamber inside the flexible sealing element.

    GAS INJECTOR HAVING REDUCED WEAR AND DAMPING DEVICE

    公开(公告)号:US20240301846A1

    公开(公告)日:2024-09-12

    申请号:US18262606

    申请日:2021-12-13

    申请人: Robert Bosch GmbH

    发明人: Martin Mueller

    IPC分类号: F02M21/02 F02M51/06

    摘要: A gas injector for injecting a gaseous fuel. The gas injector includes a solenoid actuator including an armature, an internal pole, and a coil; a closure element which opens and closes a gas path on a valve seat, the armature being connected to the closure element; a closed lubricant chamber filled with a lubricant and in which the armature is arranged, the lubricant ensuring the armature is lubricated; a flexible sealing element sealing the lubricant chamber in relation to the gas path, and a braking device which is arranged in the lubricant chamber and is configured to brake the closure element during a process of restoring the gas injector from the open into the closed state. The braking device has a brake pin, a damping chamber that is filled with lubricant and is in fluid communication with the lubricant chamber, and a resilient brake element.

    GAS INJECTOR HAVING REDUCED WEAR
    10.
    发明公开

    公开(公告)号:US20230220818A1

    公开(公告)日:2023-07-13

    申请号:US18010844

    申请日:2021-04-12

    申请人: Robert Bosch GmbH

    发明人: Martin Mueller

    IPC分类号: F02M21/02 F02M61/08 F02M61/12

    摘要: A gas injector for injecting a gaseous fuel. The gas injector includes a solenoid actuator having an armature, an internal pole and a coil; a closing element, which unblocks and seals a gas path at a valve seat, the armature being connected to the closing element; a sealed lubricant chamber, which is filled with a lubricant, and in which the armature is situated, the lubricant ensuring lubrication of the armature; and a flexible sealing element, which seals the lubricant chamber with respect to the gas path, a damping device being situated in the lubricant chamber.