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    HYDRAULICALLY ACTUATED GASEOUS FUEL INJECTOR
    11.
    发明申请
    HYDRAULICALLY ACTUATED GASEOUS FUEL INJECTOR 审中-公开

    公开(公告)号：US20190178172A1

    公开(公告)日：2019-06-13

    申请号：US16275555

    申请日：2019-02-14

    Applicant: WESTPORT POWER INC.

    Inventor： Michael C. WICKSTONE ,  David K. MUMFORD

    IPC: F02D19/06 ,  F02M45/08 ,  F02M47/02 ,  F02B7/02 ,  F02D41/00 ,  F02D41/38 ,  F02M43/04 ,  F02M61/04

    Abstract: Hydraulically actuated gaseous fuel injectors required a relatively small pressure bias between hydraulic fluid and gaseous fuel to be able to open and to reduce hydraulic fluid contamination of the gaseous fuel. An improved hydraulically actuated gaseous fuel injector includes an injection valve in fluid communication with a gaseous fuel inlet and includes a valve member reciprocatable within a fuel injector body between a closed position and an open position. There is a lift chamber in fluid communication with a hydraulic fluid inlet such that hydraulic fluid pressure in the lift chamber contributes to an opening force applied to the valve member. A control chamber is in fluid communication with the hydraulic fluid inlet such that hydraulic fluid pressure in the control chamber contributes to a closing force applied to the valve member. A control valve is operable to reduce hydraulic fluid pressure in the control chamber such that the opening force is greater than the closing force and the valve member moves to the open position.

    PISTON SEAL
    16.
    发明申请
    PISTON SEAL 审中-公开

    公开(公告)号：US20170082196A1

    公开(公告)日：2017-03-23

    申请号：US15126379

    申请日：2015-03-09

    Applicant: WESTPORT POWER INC.

    Inventor： Timothy S. COLEMAN

    IPC: F16J9/14 ,  F04B53/14

    Abstract: A piston seal for a reciprocating piston is disclosed having the shape of split ring comprising a first end segment and a second end segment overlapping along a split surface that extends from the inner circumferential surface to the outer circumferential surface of the seal and is transverse to the direction in which the 5 piston moves when reciprocating in a cylinder bore. The split surface is spaced further from the leading lateral surface of the seal that faces a compression chamber associated with the piston than it is spaced from said trailing lateral surface of the seal that is opposite to the leading lateral surface. 10

    INTEGRATED SAFETY DEVICE FOR SELF-PROPULSION GAS SYSTEMS
    18.
    发明申请
    INTEGRATED SAFETY DEVICE FOR SELF-PROPULSION GAS SYSTEMS 有权
    用于自燃气体系统的集成安全装置

    公开(公告)号：US20160040796A1

    公开(公告)日：2016-02-11

    申请号：US14855121

    申请日：2015-09-15

    Applicant: EMER, S.P.A. ,  WESTPORT POWER INC.

    Inventor： Giulia OMESTI ,  Roberto DEFILIPPI ,  Soroush FARZIN ,  Giulio BRIZZOLARI

    IPC: F16K17/00 ,  F16K37/00 ,  F16K17/38 ,  F16K17/40 ,  F17C13/04 ,  F16K17/16

    CPC classification number: F16K17/003 ,  F16K17/16 ,  F16K17/38 ,  F16K17/383 ,  F16K17/40 ,  F16K17/403 ,  F16K37/0008 ,  F16K37/0058 ,  F17C13/04 ,  F17C2205/0314 ,  F17C2205/0332 ,  F17C2205/0382 ,  F17C2205/0394 ,  F17C2221/033 ,  F17C2221/035 ,  F17C2223/0123 ,  F17C2223/0153 ,  F17C2223/033 ,  F17C2223/035 ,  F17C2223/036 ,  F17C2260/021 ,  F17C2260/023 ,  F17C2270/0168

    Abstract: A safety device for a cylinder holding gaseous fluids under pressure is disclosed. The safety device has a device body in which a passage is defined for a fluid; the passage extends from an entry aperture, suitable for being placed in fluidic communication with a cylinder, to an exit aperture. An obturator air tightly engages the passage, the obturator is movable from a first position, in which it indicates the presence of fluid at a pressure below a first predefined pressure threshold value, inside the cylinder, and a second position, in which it indicates the presence of fluid at a pressure above the first predefined pressure threshold value inside the cylinder. At least one temperature and/or pressure-sensitive relief device is positioned in the obturator in such a way that, upon exceeding a predefined temperature threshold or upon exceeding a second predefined pressure threshold, the relief device opens the passage for the fluid and permits the flow of fluid from the entry aperture towards the exit aperture.

    Abstract translation: 公开了一种用于在压力下保持气态流体的气缸的安全装置。 安全装置具有装置主体，其中为流体限定通道; 该通道从入口孔延伸出来，适于与圆柱体流体连通地连接到出口孔。 闭塞器气密地接合通道，闭塞器可从第一位置移动，在第一位置，其指示在气缸内部处于低于第一预定压力阈值的压力下的流体的存在，以及第二位置， 在高于气缸内的第一预定压力阈值的压力下存在流体。 至少一个温度和/或压敏释放装置以这样的方式定位在闭塞器中，使得当超过预定温度阈值或超过第二预定压力阈值时，释放装置打开用于流体的通道并允许 流体从入口孔流向出口孔。

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