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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
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.
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公开(公告)号：US10767611B2
公开(公告)日：2020-09-08
申请号：US16132020
申请日：2018-09-14
发明人： George A. Meek , Lukhbir Panesar
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.
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公开(公告)号：US10605212B2
公开(公告)日：2020-03-31
申请号：US15750109
申请日：2016-08-04
发明人： Michael C. Wickstone , Alain M. J. Touchette , Randall T. Mark , Kory L. Zeller , Jeremy Garnier , Mark Graham , Mehmet Dönmez , Cüneyt Altinol , Michael De Bruijn
摘要： A multi-fuel rail apparatus for an internal combustion engine communicates fuel from 10 a first fuel source and a second fuel source to a plurality of fuel injectors. Each fuel injector receives fuel from the multi-fuel rail apparatus through a branch connection for each fuel. The multi fuel rail apparatus has a first elongate member including a first longitudinal bore spaced apart from a second longitudinal bore and first and second fuel inlets for fluidly communicating first and second fuels into the first and 15 second longitudinal bores respectively. There is a branch connecting structure for each fuel injector along the first elongate member for fluidly connecting the first and second longitudinal bores with respective branch connections from respective fuel injectors.
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公开(公告)号：US20190383236A1
公开(公告)日：2019-12-19
申请号：US16558099
申请日：2019-08-31
申请人： WESTPORT POWER INC.
发明人： Gage D. Garner
摘要： An intelligent pressure management system that controls the pressure inside a cryogenic tank between variable target vapor pressure values and/or ranges that are set as a function of system operating conditions, by actuating one or more actively controllable valves, based on a signal received from a pressure sensor that measures the pressure inside the pressurized tank. The variable target vapor pressure values and/or ranges are determined as a function of system operating conditions including the vapor volume in the storage space and a fluid flow demanded by the use device. The target vapor pressure can also be adjusted based on a geographical location, predictive system operation mode, a learned operator use pattern and/or a learned system use pattern.
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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.
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.
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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
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.
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公开(公告)号：US20190293029A1
公开(公告)日：2019-09-26
申请号：US16437804
申请日：2019-06-11
申请人： WESTPORT POWER INC.
发明人： Kevin K. OVERSBY
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.
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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
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.
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公开(公告)号：US20190186481A1
公开(公告)日：2019-06-20
申请号：US16283708
申请日：2019-02-22
申请人： WESTPORT POWER INC.
发明人： Robbi L. MCDONALD , Ankur H. VAYEDA , Gregory C. HARPER , Kenneth W. KRATSCHMAR , Michael EBBEHOJ
CPC分类号： F04B39/121 , F04B15/08 , F04B37/08 , F04B39/12 , F04B39/123 , F04C15/06 , F04C29/12 , F04C2240/30 , F04C2240/806 , F04C2250/10 , F04C2250/102 , Y10S417/901
摘要： A flange for a pump comprises first and second faces and a passageway for cryogenic fluid flow extending from the first face to the second face and at least one of (1) the passageway is for a pipe and comprises a first portion of a first diameter and a second portion of a second diameter greater than the first diameter, wherein when the pipe has an outer diameter that is smaller than the second diameter a gap is formed between the pipe and the passageway where the pipe passes through the second portion; and (2) a first annular groove in one of the first face and the second face and extending around the passageway, wherein the first annular groove in cooperation with the passageway forms a bellows. The gap and bellows increase the thermal resistance between the passageway and the flange, and the bellows allows for flexure during thermal contractions of the flange reducing thermal stress on welded fluid seals.
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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.
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.
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