CN108603469B - 用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件 - Google Patents

用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件 Download PDF

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CN108603469B
CN108603469B CN201680080146.9A CN201680080146A CN108603469B CN 108603469 B CN108603469 B CN 108603469B CN 201680080146 A CN201680080146 A CN 201680080146A CN 108603469 B CN108603469 B CN 108603469B
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support bearing
pumping assembly
axis
rotor
face
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CN108603469A (zh
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R·吉西
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Robert Bosch GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
    • F04C2/102—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member the two members rotating simultaneously around their respective axes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C21/00—Component parts, details or accessories not provided for in groups F01C1/00 - F01C20/00
    • F01C21/10—Outer members for co-operation with rotary pistons; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/041—Arrangements for driving gear-type pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0023—Axial sealings for working fluid
    • F04C15/0026—Elements specially adapted for sealing of the lateral faces of intermeshing-engagement type machines or pumps, e.g. gear machines or pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
    • F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
    • F04C15/0034—Sealing arrangements in rotary-piston machines or pumps for other than the working fluid, i.e. the sealing arrangements are not between working chambers of the machine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2/00—Rotary-piston machines or pumps
    • F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C2/082—Details specially related to intermeshing engagement type machines or pumps
    • F04C2/086—Carter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/04—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps
    • F02M59/06—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by special arrangement of cylinders with respect to piston-driving shaft, e.g. arranged parallel to that shaft or swash-plate type pumps with cylinders arranged radially to driving shaft, e.g. in V or star arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • F02M63/0265—Pumps feeding common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/10—Fluid working
    • F04C2210/1044—Fuel

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Rotary Pumps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

一种用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件设有：电动齿轮泵(7)，其具有泵体(24)，用于关闭泵体(24)的闭合盖(27)；定子(29)；安装在定子(29)的内侧并通过支承轴承(42)的介入以旋转方式耦合到泵体(24)的环形转子(33)；第一密封装置(49)，其用于将支承轴承(42)和盖(27)以流体密封的方式耦合起来；和第二密封装置(48)，其用于将支承轴承(42)和泵体(24)以流体密封的方式耦合起来。

Description

用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件
技术领域
本发明涉及一种用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件。
特别地，本发明涉及一种泵送组件，其包括：高压泵，例如活塞泵，其设计用于将燃料供送至内燃发动机；和预供送泵，其设计用于将燃料从储存罐供送至高压泵。
背景技术
泵送组件还设有液压回路，该液压回路包括用于将储存罐和预供送泵连接起来的第一分支，用于将预供送泵和高压泵连接起来的第二分支，以及用于将高压泵和内燃发动机连接起来的第三分支。
预供送泵是一种电动齿轮泵，其设有容纳壳体，该容纳壳体包括杯形泵体和用于关闭所述泵体的闭合盖。
容纳壳体内部容纳同步无刷永磁电机，该电机包括环形定子，该定子具有绕着其纵向轴线均匀分布的多个铜绕组，且设有电连接器以馈送所述绕组。
电机还包括环形转子，其通过支承轴承的介入以旋转方式接合在定子中，且安装成能绕着与所述定子的纵向轴线重合的旋转轴线旋转。
转子具有内齿并限定齿轮泵的外齿轮，该齿轮泵还包括容纳在转子内的环形内齿轮。
内齿轮安装成能绕着一相对于转子的旋转轴线偏心的旋转轴线旋转，且具有与所述转子的内齿相啮合的外齿。
形成这两组齿，以便限定多个可变容积腔室，这些可变容积腔室围绕转子的旋转轴线分布，且以流体密封的方式耦合起来。
在外齿轮和内齿轮围绕相应的旋转轴线旋转后，每个可变容积腔室相继地首先液压连接到进入齿轮泵的燃料入口，然后液压连接到从所述齿轮泵离开的燃料出口。
转子还包括多个凹穴，这些凹穴构造成分别在其内部容纳相应的永磁体，且围绕所述转子的旋转轴线分布。
通常，为了使定子以及绕组和电连接器与燃料电隔离，定子完全涂覆有一层隔离塑料。
上述类型的已知泵送组件具有许多缺点，主要是由于具有所述隔离塑料层的定子涂层相对较昂贵，难以实施，且可靠性相对较低，因为在齿轮泵所经受的工作压力和温度条件下无法保证定子的正确隔离。
发明内容
本发明的一个目的是提供一种用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件，该泵送组件不具有上述缺点且制造起来简单且便宜。
根据本发明，提供了一种用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件。
附图说明
现在将参照附图描述本发明，附图示出了本发明的非限制性示例性实施例，在附图中：
图1是本发明的泵送组件的一个优选实施例的液压图；
图2是图1所示的泵送组件的细节的分解透视图；
图3是图2所示细节的纵向剖视图；以及
图4是图2和3中所示细节的正视图。
具体实施方式
参考图1，附图标记1整体表示泵送组件，该泵送组件用于将燃料、优选柴油燃料从储存罐2供送至内燃发动机3，在所讨论的情况下是柴油燃烧发动机，其包括通常称为“共轨”的燃料分配歧管4和多个喷射器5，所述喷射器5连接到歧管4并设计成能雾化所述发动机3的相应燃烧室(未示出)内的燃料。
泵送组件1包括：高压泵6，在所讨论的情况下是活塞泵，其设计用于将燃料供送至发动机3；和低压泵或预供送泵7，其设计用于将燃料从罐2供送至泵6。
泵6包括多个气缸8(在所述情况下为两个气缸8)，所述气缸8形成在泵体9中且分别由相应的活塞10可滑动地接合。
活塞10通过容纳在泵体9内的已知类型的驱动装置11以交替的直线运动沿着相应的气缸8移位，该直线运动包括用于将燃料吸入相应的气缸8的向外冲程和用于压缩包含在所述相应的气缸8中的燃料的返回冲程。
泵送组件1还包括用于供送燃料的液压回路12，该液压回路12又包括：用于将罐2和泵7连接起来的第一分支13；第二分支14，其将泵6和7连接起来，延伸通过泵体9、以便润滑驱动装置11，并借助于相应的进气阀15连接到每个气缸8；和第三分支16，其在泵6和歧管4之间延伸，并借助于相应的输送阀17连接到每个气缸8。
分支14设有：装置18，其用于过滤供送至泵6的燃料；和计量电阀19，其在沿着分支13，14和16的燃料供送方向20上安装在阀15的上游，且能够在关闭位置和打开位置之间移动，以根据发动机3的多个运行参数的值，选择性地控制供送至泵6的瞬时燃料流量。
回路12还包括第四分支21，第四分支21在歧管4和罐2之间延伸，并设有计量电阀22，计量电阀22与电阀19配合，以选择性地控制供送至喷射器5的燃料流量，并使得超过喷射器5所需的燃料量能够排出到罐2中。
如图2和图3所示，泵7是电动齿轮泵，其设有容纳壳体23，容纳壳体23包括泵体24，泵体24具有杯形，由彼此相对且彼此平行的底壁25和自由端面26界定，且由布置成与所述面26接触的盖27关闭。
壳体23内部容纳同步无刷永磁电机28，其包括环形定子29，该定子29具有垂直于壁25和面26的纵向轴线30，设有围绕轴线30均匀分布的多个铜绕组31，且设有用于馈送所述绕组31的电连接器32。
定子29由环形转子33以旋转方式接合，环形转子33安装成与轴线30同轴，具有内齿34，并限定出泵7的外齿轮。
泵7还包括环形内齿轮35，其容纳在转子33内，安装成能围绕平行于所述轴线30并与所述轴线30分离开的旋转轴线36旋转，并具有与转子33的内齿34啮合的外齿37。
参考图4，两组齿34，37形成为能限定多个可变容积腔室38，可变容积腔室38围绕轴线30分布且以流体密封的方式耦合起来。
在转子33和齿轮35围绕相应的轴线30，36旋转后，每个腔室38相继地首先液压连接到进入泵7的燃料入口39，然后液压连接到从所述泵7离开的燃料出口40。
结合上述阐述，应该指出，与入口39相应的腔室38的容积在转子33绕着轴线30旋转和齿轮35绕着轴线36旋转的方向41上增加，且与出口40相应的腔室38的容积在方向41上减小，以便压缩包含在其中的燃料。
转子33通过圆柱形支承轴承42的介入以旋转方式连接到定子29，支承轴承42由塑料制成且在壁25和盖27之间延伸。
轴承42通过盖27轴向地止挡在壁25上，并适配在定心块43上，定心块43从壁25朝着盖27与轴线30同轴地突出，其直径与轴承42的直径基本上相同，且设有端销44，端销44与轴线36同轴地接合通过齿轮35。
轴承42具有多个加强肋45，加强肋45形成在轴承42的外表面上，围绕轴线30均匀分布，且每个加强肋45在两个相互邻近的相应绕组31之间延伸，以围绕所述轴线30成角度地止挡轴承42。
轴承42相对于转子33轴向突出且具有环形凸缘46，环形凸缘46从轴承42的侧壁径向向内突出，在盖27和转子33之间垂直于轴线30延伸，且限定出开口，该开口设计用于接收盖27的定心柄47。
轴承42借助于环形垫圈48以流体密封的方式耦合到块43，环形垫圈48与轴线30同轴地延伸，且安装在块43的外表面和轴承42的内表面之间，也就是平行于所述轴线30的两个表面之间。
轴承42借助于环形垫圈49以流体密封的方式耦合到盖27，环形垫圈49与轴线30同轴地延伸，且安装在盖27和凸缘46之间，也就是在垂直于所述轴线30两个表面之间。
根据一个未示出的变型，凸缘46被省去，且垫圈49安装在盖27的外表面和轴承42的内表面之间，也就是在平行于轴线30的两个表面之间。
垫圈48和49保证了在泵7所经受的操作压力和温度条件下将定子29与存在于可变容积腔室38中的燃料正确隔离，因此具有相对较高的可靠性。

Claims (9)

1.一种用于将燃料供送至内燃发动机(3)的泵送组件，该泵送组件包括用于将燃料供送至内燃发动机(3)的高压泵(6)和用于将燃料供送至高压泵(6)的齿轮泵(7)；齿轮泵(7)包括：容纳壳体(23)，其具有杯形泵体(24)和用于关闭所述泵体(24)的闭合盖(27)；电机(28)，其具有定子(29)、环形转子(33)和形成在转子(33)上的外齿轮(34)，所述环形转子(33)安装在定子(29)的内侧，并通过支承轴承(42)的介入以旋转方式耦合到所述定子(29)；和内齿轮(35)，其安装在所述外齿轮(34)的内侧，并耦合到所述外齿轮(34)；其特征在于，该泵送组件还包括第一密封装置(49)和第二密封装置(48)，第一密封装置(49)以流体密封的方式将支承轴承(42)和盖(27)耦合起来，第二密封装置(48)以流体密封的方式将支承轴承(42)和泵体(24)耦合起来，
其中，第一密封装置(49)是第一环形垫圈，
其中，第一环形垫圈介于所述支承轴承(42)的面和所述盖(27)的面之间，
其中，第二密封装置(48)是第二环形垫圈，
第二环形垫圈介于所述支承轴承(42)的面和所述泵体(24)的面之间，
其中，所述定子(29)包括围绕其纵向轴线(30)均匀分布的多个绕组(31)；支承轴承(42)具有多个加强肋(45)，所述加强肋(45)形成在支承轴承(42)的侧壁上且分别在定子(29)的两个相应的绕组(31)之间延伸，以绕着所述纵向轴线(30)在角度上止挡支承轴承(42)。
2.根据权利要求1所述的泵送组件，其中，所述支承轴承(42)的面和所述盖(27)的面均基本上垂直于所述转子(33)的旋转轴线(30)。
3.根据权利要求1所述的泵送组件，其中，所述支承轴承(42)的面和所述盖(27)的面均基本上平行于所述转子(33)的旋转轴线(30)。
4.根据权利要求1-3中任一项所述的泵送组件，其中，所述支承轴承(42)的面和所述泵体(24)的面基本上平行于所述转子(33)的旋转轴线(30)。
5.根据权利要求1-3中任一项所述的泵送组件，其中，所述转子(33)安装成能绕着第一旋转轴线(30)旋转，且所述内齿轮(35)安装成能绕着第二旋转轴线(36)旋转，第二旋转轴线(36)平行于第一旋转轴线(30)并与第一旋转轴线(30)分离开。
6.根据权利要求1-3中任一项所述的泵送组件，其中，所述支承轴承(42)具有环形凸缘(46)，所述环形凸缘(46)从所述支承轴承(42)的侧壁径向向内突出且限定出开口，所述开口设计用于接收盖(27)的定心柄(47)。
7.根据权利要求1-3中任一项所述的泵送组件，其中，所述支承轴承(42)由塑料制成。
8.根据权利要求1-3中任一项所述的泵送组件，其中，所述泵体(24)由基本上垂直于所述转子(33)的旋转轴线(30)的底壁(25)界定，且具有定心块(43)，所述定心块(43)从底壁(25)轴向地突出并延伸到支承轴承(42)中。
9.根据权利要求1-3中任一项所述的泵送组件，其中，所述泵送组件配置成用于将柴油燃料供送至内燃发动机(3)。
CN201680080146.9A 2015-12-22 2016-12-12 用于将燃料、优选柴油燃料供送至内燃发动机的泵送组件 Expired - Fee Related CN108603469B (zh)

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