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    Multi-Vessel Fluid Storage and Delivery System
    1.
    发明申请
    Multi-Vessel Fluid Storage and Delivery System 有权

    公开(公告)号：US20210041066A1

    公开(公告)日：2021-02-11

    申请号：US17080758

    申请日：2020-10-26

    申请人： WESTPORT POWER INC.

    发明人： Gage D. Garner ,  Melih Ogmen

    IPC分类号： F17C7/04 ,  F04B23/02 ,  F17C13/02 ,  F04B49/08

    摘要： A multi-vessel fluid storage and delivery system is disclosed which is particularly useful in systems having internal combustion engines which use gaseous fuels. The system can deliver gaseous fluids at higher flow rates than that which can be reliably achieved by vapor pressure building circuits alone, and that keeps pressure inside the storage vessel lower so that it reduces fueling time and allows for quick starts thereafter. The system is designed to store gaseous fluid in liquefied form in a plurality of storage vessels including a primary storage vessel fluidly connected to a pump apparatus and one or more server vessels which together with a control system efficiently stores a liquefied gaseous fluid and quickly delivers the fluid as a gas to an end user even when high flow rates are required. The system controls operation of the pump apparatus as a function of the measured fluid pressure, and controls the fluid pressure in a supply line according to predetermined pressure values based upon predetermined system operating conditions.

    Fuel injector
    2.
    发明授权
    Fuel injector 有权

    公开(公告)号：US10767611B2

    公开(公告)日：2020-09-08

    申请号：US16132020

    申请日：2018-09-14

    申请人： WESTPORT POWER INC. ,  DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.Á.R.L.

    发明人： George A. Meek ,  Lukhbir Panesar

    IPC分类号： F02M61/12 ,  F02M47/02 ,  F02M51/06 ,  F02M43/04 ,  F02M63/00 ,  F02D41/00 ,  F02D19/06

    摘要： A fuel injector for an internal combustion engine is disclosed. The fuel injector is particularly suitable for use as a dual fuel injector, and comprises a generally tubular outer valve needle, an inner valve needle slidably received in the outer valve needle, and a nozzle body assembly comprising a tip part and a needle guide part. The tip part defines a seating region for the outer valve needle, and the needle guide part comprises a guide bore for slidably receiving the outer valve needle. In one embodiment, a lower bore region of the needle guide part defines a cavity around the outer valve needle which houses a biasing spring for the outer valve needle and a fuel. A collar for seating the biasing spring can be dimensioned to allow free flow of the fuel from the cavity into an annular accumulator volume defined between the outer valve needle and the bore of the tip part.

    Cryogenic storage vessel
    4.
    发明授权
    Cryogenic storage vessel 有权

    公开(公告)号：US10480716B2

    公开(公告)日：2019-11-19

    申请号：US15316068

    申请日：2015-05-29

    申请人： Westport Power Inc.

    发明人： Robbi L. McDonald ,  Ankur H. Vayeda ,  Kenneth W. Kratschmar ,  Michael Ebbehoj

    IPC分类号： F17C13/02 ,  F17C13/00 ,  F17C3/08

    摘要： Draining a cryogenic storage vessel to remove a pump is timing consuming, expensive and can result in increased greenhouse gas emissions. A cryogenic storage vessel comprises an inner vessel defining a cryogen space and an outer vessel spaced apart from and surrounding the inner vessel, defining a thermally insulating space between the inner and outer vessels. A receptacle comprises an outer sleeve and an inner sleeve, and defines passages for delivery of liquefied gas from the cryogen space to outside the cryogenic storage vessel. The outer sleeve intersects opposite sides of the inner vessel, with the opposite ends of the outer sleeve defining an interior space in fluid communication with the thermally insulating space that is sealed from the cryogen space. The inner sleeve has an open end supported from the outer vessel, and extends into the interior space defined by the outer sleeve, and a closed end opposite the open end, defining a receptacle space that is fluidly isolated from the thermally insulating space. A fluid communication channel extends from the cryogen space to the receptacle space, and can be selectively closed to allow the pump to be removed.

    Bracketed support for a double walled cryogenic storage vessel
    5.
    发明授权
    Bracketed support for a double walled cryogenic storage vessel 有权

    公开(公告)号：US10451218B2

    公开(公告)日：2019-10-22

    申请号：US15313945

    申请日：2015-05-13

    申请人： Westport Power Inc.

    发明人： Martin A. Strange ,  Brian Girard

    IPC分类号： F17C13/00 ,  F17C13/08 ,  F17C3/08

    摘要： Unconstrained rotational movement of an inner vessel with respect to an outer vessel at one end of a cryogenic storage vessel increases stress in supports at an opposite end. A storage vessel for holding a cryogenic fluid comprises an inner vessel defining a cryogen space and having a longitudinal axis, and an outer vessel spaced apart from and surrounding the inner vessel, defining a thermally insulating space between the inner and outer vessels. A structure for supporting the inner vessel within the outer vessel at one end comprises an inner vessel support bracket connected with the inner vessel, an outer vessel support bracket connected with the outer vessel, and an elongated support extending between and mutually engaging the inner and outer support brackets to constrain radial and rotational movement of the inner vessel with respect to the outer vessel and to allow axial movement of the inner vessel with respect to the outer vessel along the longitudinal axis.

    System for delivering a fluid stored in liquefied form to an end user in gaseous form
    6.
    发明授权
    System for delivering a fluid stored in liquefied form to an end user in gaseous form 有权

    公开(公告)号：US10344714B2

    公开(公告)日：2019-07-09

    申请号：US15032587

    申请日：2014-10-23

    申请人： WESTPORT POWER INC.

    发明人： Kevin K. Oversby

    IPC分类号： F17C9/02 ,  F02M21/06 ,  F17C7/02 ,  F17C7/04 ,  F02M21/02

    摘要： A system and method is disclosed for storing a fluid in a storage vessel in liquefied form and delivering it in gaseous form to an end user through a supply line. The system comprises a pressure relief circuit for returning the fluid from the supply line to the vessel when predetermined conditions are met. The pressure relief circuit comprises a return line connected to the supply line and the storage vessel, a diversion line to divert the fluid elsewhere and a switching device operable to direct the fluid to either one of the lines, as a function of predetermined conditions.

    Gaseous fuel pumping system
    7.
    发明授权
    Gaseous fuel pumping system 有权

    公开(公告)号：US10323581B2

    公开(公告)日：2019-06-18

    申请号：US15519492

    申请日：2015-10-14

    申请人： WESTPORT POWER INC.

    发明人： Michael Ebbehoj ,  Kenneth W. Kratschmar

    IPC分类号： F04B9/08 ,  F02D19/02 ,  F02D25/00 ,  F02M21/02 ,  F04B49/03 ,  F04B49/06

    摘要： In high horse power engines there are strict energy budgets allotted for each subsystem. It is a challenge for a gaseous fuel pumping system to supply the necessary gaseous fuel mass flow to the engine while staying within budget. A method for pressurizing a gaseous fuel supplied to an engine comprises providing first and second hydraulically actuated pumping apparatus comprising first and second shuttle valves in first and second hydraulic pistons respectively; and selectively communicating hydraulic fluid flow to the first and second hydraulically actuated pumping apparatuses. In a first mode hydraulic fluid is communicated through the first hydraulically actuated pumping apparatus to the second hydraulically actuated pumping apparatus. In a second mode hydraulic fluid is communicated through the second hydraulically actuated pumping apparatus to the first hydraulically actuated pumping apparatus. The method switches between the first and second modes when a pressure drop in hydraulic fluid pressure associated with the hydraulic fluid flowing through the first and second shuttle valves is detected.

    Method for regenerating a diesel particulate filter
    10.
    发明授权
    Method for regenerating a diesel particulate filter 有权
    再生柴油微粒过滤器的方法

    公开(公告)号：US09169765B2

    公开(公告)日：2015-10-27

    申请号：US12503026

    申请日：2009-07-14

    申请人： Campbell R. McConnell ,  Paul Sebright Towgood

    发明人： Campbell R. McConnell ,  Paul Sebright Towgood

    IPC分类号： F01N3/00 ,  F01N9/00 ,  F01N3/025

    CPC分类号： F01N9/002 ,  F01N3/0253 ,  F01N2240/30 ,  F01N2560/022 ,  F01N2560/06 ,  F01N2560/07 ,  F01N2610/04 ,  F01N2610/05 ,  F01N2610/146 ,  F01N2900/08 ,  Y02T10/47

    摘要： A method of regenerating a diesel particulate filter involves directing an exhaust stream from a combustion engine through the diesel particulate filter and selectively introducing a syngas stream at least periodically into the diesel particulate filter to regenerate it. The syngas stream is introduced at a first average flow rate during an initial regeneration stage and at a second average flow rate during a subsequent regeneration stage. In preferred embodiments the flow rate is varied in order to reduce temperature spikes and/or the rate at which CO slips through the filter during regeneration. In certain embodiments the first average flow rate is lower than the second average flow rate.

    摘要翻译： 再生柴油微粒过滤器的方法包括将来自内燃机的废气流引导通过柴油机微粒过滤器，并选择性地将合成气流定期引入柴油机微粒过滤器以再生柴油微粒过滤器。 合成气流在初始再生阶段以第一平均流速引入，并且在随后的再生阶段以第二平均流速引入。 在优选实施例中，为了降低温度尖峰和/或在再生期间CO滑过过滤器的速率而改变流速。 在某些实施方案中，第一平均流速低于第二平均流速。