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    FUEL PUMP ASSEMBLY
    3.
    发明申请
    FUEL PUMP ASSEMBLY 审中-公开
    燃油泵总成

    公开(公告)号：WO2016177799A1

    公开(公告)日：2016-11-10

    申请号：PCT/EP2016/060036

    申请日：2016-05-04

    Applicant: VOLVO TRUCK CORPORATION

    Inventor： YUDANOV, Sergi

    IPC: F02M55/00 ,  F02M59/44 ,  F02M37/00 ,  F04B1/04 ,  F02M21/02 ,  F02M63/00 ,  F02M37/22

    CPC classification number: F04B1/0443 ,  F02M21/0212 ,  F02M21/0227 ,  F02M21/0245 ,  F02M59/02 ,  F02M59/442 ,  F02M59/46 ,  F02M63/0001 ,  F02M2200/953 ,  F04B53/04 ,  F04B53/18 ,  Y02T10/32

    Abstract: The present disclosure relates to a fuel pump assembly (14) for pressurizing fuel, the fuel preferably comprising dimethyl ether (DME). The fuel pump assembly (14) comprises a plunger assembly (26) and a pump block (28) defining a pumping chamber (16) and a plunger assembly cavity (30) in communication with the pumping chamber (16). The plunger assembly (26) is movable at least partially in the plunger assembly cavity (30) towards and from the pumping chamber (16). The fuel pump assembly (14) comprises a metering valve (22) and a suction channel (24) located between the metering valve (22) and the pumping chamber (16) in an intended direction of flow of the fuel, wherein the fuel pump assembly (14) comprises a leakage return conduit (44), with a first leakage return conduit opening (46) in fluid communication with said plunger assembly cavity (30), adapted to return fuel that has leaked from the pumping chamber (16). The leakage return conduit (44) comprises a second leakage return conduit opening (48) located in the suction channel (24).

    Abstract translation: 本公开涉及一种用于对燃料加压的燃料泵组件（14），燃料优选包括二甲醚（DME）。 燃料泵组件（14）包括柱塞组件（26）和限定泵送室（16）的泵块（28）和与泵送室（16）连通的柱塞组件腔（30）。 柱塞组件（26）至少部分地可以在柱塞组件空腔（30）中朝向和从泵送室（16）移动。 燃料泵组件（14）包括计量阀（22）和位于计量阀（22）和泵送室（16）之间的预期燃料流动方向上的吸入通道（24），其中燃料泵 组件（14）包括泄漏返回管道（44），其中第一泄漏返回管道开口（46）与所述柱塞组件腔（30）流体连通，适于返回已经从泵送室（16）泄漏的燃料。 泄漏返回管道（44）包括位于吸入通道（24）中的第二泄漏返回管道开口（48）。

    FUEL PUMP ASSEMBLY
    4.
    发明申请
    FUEL PUMP ASSEMBLY 审中-公开
    燃油泵组件

    公开(公告)号：WO2016177431A1

    公开(公告)日：2016-11-10

    申请号：PCT/EP2015/060104

    申请日：2015-05-07

    Applicant: VOLVO TRUCK CORPORATION

    Inventor： YUDANOV, Sergi

    IPC: F02M55/00 ,  F02M59/44 ,  F02M37/00

    CPC classification number: F04B1/0443 ,  F02M21/0212 ,  F02M21/0227 ,  F02M21/0245 ,  F02M59/02 ,  F02M59/442 ,  F02M59/46 ,  F02M63/0001 ,  F02M2200/953 ,  F04B53/04 ,  F04B53/18 ,  Y02T10/32

    Abstract: The present disclosure relates to a fuel pump assembly (14) for pressurizing fuel, the fuel preferably comprising dimethyl ether (DME). The fuel pump assembly (14) comprises a plunger assembly (26) and a pump block (28) defining a pumping chamber (16) and a plunger assembly cavity (30) in communication with the pumping chamber (16). The plunger assembly (26) is movable at least partially in the plunger assembly cavity (30) towards and from the pumping chamber (16). The fuel pump assembly (14) comprises a metering valve (22) and a suction channel (24) located between the metering valve (22) and the pumping chamber (16) in an intended direction of flow of the fuel, wherein the fuel pump assembly (14) comprises a leakage return conduit (44), with a first leakage return conduit opening (46) in fluid communication with said plunger assembly cavity (30), adapted to return fuel that has leaked from the pumping chamber (16). The leakage return conduit (44) comprises a second leakage return conduit opening (48) located in the suction channel (24).

    Abstract translation: 本发明涉及一种用于加压燃料的燃料泵组件（14），所述燃料优选包含二甲醚（DME）。 燃料泵组件（14）包括限定泵送室（16）的柱塞组件（26）和泵块（28）以及与泵送室（16）连通的柱塞组件腔（30）。 柱塞组件（26）可至少部分地在柱塞组件腔（30）中朝向和离开泵送室（16）移动。 燃料泵组件（14）包括计量阀（22）和位于计量阀（22）和泵送室（16）之间沿燃料的预期流动方向的抽吸通道（24），其中燃料泵 （14）包括泄漏返回导管（44），所述泄漏返回导管（44）具有与所述柱塞组件腔（30）流体连通的第一泄漏返回导管开口（46），所述第一泄漏返回导管开口适于返回已从所述泵送室（16）泄漏的燃料。 泄漏返回导管（44）包括位于抽吸通道（24）中的第二泄漏回流导管开口（48）。

    GASEOUS FUEL PUMPING SYSTEM
    5.
    发明申请
    GASEOUS FUEL PUMPING SYSTEM 审中-公开
    气体燃油泵系统

    公开(公告)号：WO2016058100A1

    公开(公告)日：2016-04-21

    申请号：PCT/CA2015/051039

    申请日：2015-10-14

    Applicant: WESTPORT POWER INC.

    Inventor： EBBEHOJ, Michael ,  KRATSCHMAR, Kenneth

    IPC: F02M21/02 ,  F02D19/02 ,  F04B49/06

    CPC classification number: F02D19/022 ,  F02D25/00 ,  F02M21/0245 ,  F02M21/0287 ,  F04B9/08 ,  F04B49/03 ,  F04B49/06 ,  Y02T10/32

    Abstract: 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.

    Abstract translation: 在高马力发动机中，为每个子系统分配了严格的能源预算。 气体燃料泵送系统在保持在预算范围内的情况下，能够向发动机提供必要的气体燃料质量流量是一项挑战。 一种用于对供应到发动机的气体燃料加压的方法包括：分别在第一和第二液压活塞中分别提供第一和第二液压致动的泵送装置，其包括第一和第二梭阀; 并且选择性地将液压流体流传送到第一和第二液压致动泵送装置。 在第一模式中，液压流体通过第一液压致动泵送装置连通到第二液压致动泵送装置。 在第二模式中，液压流体通过第二液压致动的泵送装置连通到第一液压致动的泵送装置。 当检测到与流过第一和第二梭阀的液压流体相关联的液压流体压力的压降时，该方法在第一和第二模式之间切换。

    FUEL INJECTION SYSTEM FOR LOW-VISCOSITY FUELS
    6.
    发明申请
    FUEL INJECTION SYSTEM FOR LOW-VISCOSITY FUELS 审中-公开
    低粘度燃料燃油喷射系统

    公开(公告)号：WO2015049062A1

    公开(公告)日：2015-04-09

    申请号：PCT/EP2014/025006

    申请日：2014-10-06

    Applicant: VOLVO TRUCK CORPORATION

    Inventor： YUDANOV, Sergi

    IPC: F02M37/08 ,  F02M21/02 ,  F02M63/02 ,  F02M37/00 ,  F02M55/00

    CPC classification number: F02M21/0212 ,  F02M21/0239 ,  F02M21/0245 ,  F02M37/08 ,  F02M55/007 ,  F02M63/0225 ,  F02M63/0265 ,  F02M2200/953 ,  Y02T10/32

    Abstract: The disclosure relates to a fuel injection system (1) for an internal combustion engine. The fuel injection system (1) comprises a fuel tank (2), a low pressure fuel feed pump (3), a high pressure fuel pump (5) with a suction channel (13) for supplying fuel to a high pressure pumping mechanism, and a first fuel return line (7). The low pressure fuel feed pump (3) is arranged for supplying fuel from the fuel tank (2) to the suction channel (13) and the first fuel return line (7) is arranged for enabling excessively supplied fuel from the low pressure fuel feed pump (3) to be re-circulated to the fuel tank (2). At least one non-return valve (16, 17, 18) is placed in the fuel feed flow from the low pressure fuel feed pump (3) to the suction channel (13) and/or in the fuel return flow in the first fuel return line (7), and the at least one non-return valve (16, 17, 18) is arranged to prevent flow in a direction opposite the feed flow and/or re-circulation flow. The disclosure also relates to a fuel injection system (1) comprising a bleed valve (14) connected by its inlet to the suction channel (13) and by its outlet to the fuel tank (2). The bleed valve (14) is a spring-loaded non-return valve and its spring opening pressure is set lower than an average relative feed pressure of the low pressure fuel feed pump (3).

    Abstract translation: 本公开涉及一种用于内燃机的燃料喷射系统（1）。 燃料喷射系统（1）包括燃料箱（2），低压燃料供给泵（3），具有用于向高压泵送机构供应燃料的吸入通道（13）的高压燃料泵（5） 和第一燃料返回管线（7）。 低压燃料供给泵（3）被布置成用于将燃料从燃料箱（2）供给到吸入通道（13），并且第一燃料返回管线（7）被布置成使得能够从低压燃料供给 泵（3）再循环到燃料箱（2）。 至少一个止回阀（16,17,18）被放置在从低压燃料供给泵（3）到吸入通道（13）和/或第一燃料中的燃料回流中的燃料供给流中 回流管线（7），并且至少一个止回阀（16,17,18）被布置成防止沿与进料流和/或再循环流动相反的方向流动。 本公开还涉及一种燃料喷射系统（1），其包括通过其入口到吸入通道（13）和通过其到燃料箱（2）的出口连接的排放阀（14）。 排放阀（14）是弹簧加载的止回阀，并且其弹簧开启压力被设定为低于低压燃料供给泵（3）的平均相对进给压力。

    SUPPLYING GASEOUS FUEL FROM A LIQUID STATE TO AN ENGINE
    9.
    发明申请
    SUPPLYING GASEOUS FUEL FROM A LIQUID STATE TO AN ENGINE 审中-公开
    将气体燃料从液体供应给发动机

    公开(公告)号：WO2014053061A1

    公开(公告)日：2014-04-10

    申请号：PCT/CA2013/050745

    申请日：2013-10-02

    Applicant: WESTPORT POWER INC.

    Inventor： MELANSON, Bradley E. ,  MUMFORD, David K. ,  BLOMERUS, Paul M. ,  MCKINNON, Melissa S.A.

    IPC: F02M21/02 ,  F02G5/00

    CPC classification number: F02M21/0287 ,  F01P2060/18 ,  F02B63/06 ,  F02B73/00 ,  F02D25/00 ,  F02G5/00 ,  F02G5/04 ,  F02M21/0245 ,  F02M21/06 ,  F02M31/125 ,  F02M31/166 ,  F02M31/18 ,  F02N19/10 ,  Y02T10/126 ,  Y02T10/16 ,  Y02T10/32 ,  Y02T30/16

    Abstract: There is an improved method for supplying gaseous fuel from a liquid state to an internal combustion engine comprising employing a second internal combustion engine as a source of energy; pumping the gaseous fuel in the liquid state by transforming energy from the source of energy into mechanical work for the pumping; exchanging waste heat from the second internal combustion engine in a first heat exchange fluid circulating through the second internal combustion engine to a second heat exchange fluid; vaporizing the gaseous fuel pumped from the liquid state with heat from the second heat exchange fluid; and delivering the gaseous fuel vaporized from the liquid state to the internal combustion engine; wherein a pressure of the gaseous fuel delivered to the internal combustion engine is maintained within a predetermined range of tolerance by the pumping.

    Abstract translation: 一种用于将气态燃料从液态供应到内燃机的改进方法，包括采用第二内燃机作为能量源; 通过将来自能量源的能量转换成用于泵送的机械作业来泵送处于液态的气态燃料; 在通过所述第二内燃机循环的第一热交换流体中将来自所述第二内燃机的废热换成第二热交换流体; 使来自第二热交换流体的热量从液体状态泵出的气体燃料蒸发; 以及将从所述液态蒸发的所述气态燃料输送到所述内燃机; 其中输送到内燃机的气体燃料的压力通过泵送保持在预定的公差范围内。

    PUMP HEAD FOR A FUEL PUMP
    10.
    发明申请
    PUMP HEAD FOR A FUEL PUMP 审中-公开
    用于燃油泵的泵头

    公开(公告)号：WO2013113693A2

    公开(公告)日：2013-08-08

    申请号：PCT/EP2013/051674

    申请日：2013-01-29

    Applicant: DELPHI TECHNOLOGIES HOLDING S.À.R.L.

    Inventor： MCCRINDLE, Christopher

    IPC: F02M59/10

    CPC classification number: F02M21/0245 ,  F02M59/102 ,  F02M59/442 ,  F04B1/0421 ,  F04B1/0439 ,  F04B1/0448 ,  F04B53/162

    Abstract: A pump head (14) for a high-pressure fuel pump is disclosed. The pump head comprises a head housing including a body portion (24), and a turret portion (30) extending from the body portion (24), a pumping chamber (36) defined within the body portion (24), a pumping element bore (34) for receiving a pumping element (32) in use, the pumping element bore (34) extending from the pumping chamber (36) and through the turret portion (30), and a leakage return passage (74). The pump head (14) further comprises a sleeve (70) arranged around the turret portion (70) to define a leakage flow path (72) to allow fuel flow from the pumping element bore (34) to the leakage return passage (74). The pump head is suitable for use in a fuel pump of the type in which a cam drive arrangement of the pump is lubricated by engine oil, since contamination of the engine oil with fuel can be minimised.

    Abstract translation: 公开了一种用于高压燃料泵的泵头（14）。 泵头包括头壳体，其包括主体部分（24）和从主体部分（24）延伸的转台部分（30），限定在主体部分（24）内的泵送室（36），泵送元件孔 （34），用于在使用中接收泵送元件（32），所述泵送元件孔（34）从所述泵送室（36）延伸并且通过所述转台部分（30）和泄漏返回通道（74）。 泵头（14）还包括围绕转台部分（70）布置以限定泄漏流动路径（72）的套筒（70），以允许燃料从泵送元件孔（34）流到泄漏返回通道（74） 。 泵头适用于其中由发动机油润滑泵的凸轮驱动装置的类型的燃料泵，因为能够使燃料的发动机油的污染最小化。

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