CN105593510B - 高压泵 - Google Patents

高压泵 Download PDF

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CN105593510B
CN105593510B CN201480042346.6A CN201480042346A CN105593510B CN 105593510 B CN105593510 B CN 105593510B CN 201480042346 A CN201480042346 A CN 201480042346A CN 105593510 B CN105593510 B CN 105593510B
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elastic component
pressure chamber
valve
pump unit
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CN105593510A (zh
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O·M·坦苏格
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Delphi Technologies IP Ltd
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Delphi Technologies Holding SARL
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    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/445—Selection of particular materials
    • 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
    • F02M59/025—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 a single piston
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/464—Inlet valves of the check valve type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0452—Distribution members, e.g. valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B19/00—Machines or pumps having pertinent characteristics not provided for in, or of interest apart from, groups F04B1/00 - F04B17/00
    • F04B19/20—Other positive-displacement pumps
    • F04B19/22—Other positive-displacement pumps of reciprocating-piston type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/06—Venting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/102—Disc valves
    • F04B53/1022—Disc valves having means for guiding the closure member axially
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F02M2200/26—Fuel-injection apparatus with elastically deformable elements other than coil springs

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Details Of Reciprocating Pumps (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

一种具有泵头部(12)的高压燃料泵单元(10)，其中，入口通道(42)通到低压室(40)，低压室(40)本身与压缩室(16)流体连通。阀(20)被布置成使得：当它关闭时，燃料填充低压室(40)，并且当阀打开时，燃料从低压室(40)流到压缩室(16)中。所述泵头部(12)还包括弹性构件(38)，弹性构件(38)被布置成使得：当阀(20)关闭时，弹性构件(38)变形从而增大所述低压室(40)的容积，并且当阀(20)打开时，燃料在弹性构件(38)的推动下流到压缩室(16)中，弹性构件(38)回复到其原来的形状。

Description

高压泵
技术领域
本发明涉及一种高压燃料泵，以及更具体地，涉及入口阀的布置。
背景技术
在高压燃料泵中，入口阀控制对压缩室的填充。在填充泵的压缩室之前，贮存器中的被泵送的燃料在数巴的低压下流动通过开口在低压室中的入口通道。入口阀打开或关闭两个室之间的流体连通。
发明内容
因此，本发明的目的是提供一种具有泵头部的高压燃料泵单元，其中，入口通道通到本身与压缩室流体连通的低压室。所述流体连通由阀来控制，该阀被布置成使得：当它关闭时，燃料填充所述低压室，并且当所述阀打开时，所述燃料从所述低压室流到所述压缩室中。所述泵头部还有利地包括弹性构件，所述弹性构件被布置成使得：当所述阀关闭时，所述弹性构件变形从而增大所述低压室的容积，并且当所述阀打开时，所述燃料通过所述弹性构件的推动从而流到所述压缩室中，所述弹性构件回复到其原来的形状。
所述低压室具有多个外围壁，所述弹性构件是所述壁中的一个。尤其地，所述低压室被限定在固定到所述泵头部的壳体的顶帽内，所述顶帽具有从所述泵壳体延伸出来的圆柱形壁，所述弹性构件是横向顶壁。所述顶帽由薄金属板制成，所以所述横向顶壁是柔性的并形成所述弹性构件。
替代地，所述泵单元还可包括固定在所述泵头部上的凸缘，所述凸缘设有通孔，所述通孔形成了所述低压室的侧壁，所述孔被所述弹性构件封闭。该孔设有内螺纹，以紧靠内台肩面地接收螺纹帽。所述弹性构件是在所述台肩和所述帽之间伸展的弹性膜。
所述盖的内部面的表面设有凹部，所述凹部限定所述凹面和所述膜之间的互补室。
所述泵单元还设置有把所述互补室联接到外面的通气孔。
附图说明
现在参照附图以非限制性实例的方式描述本发明，其中：
图1是根据本发明的泵头部的轴向截面。
图2是仍然根据本发明的泵头部的第二实施例。
具体实施方式
为了清楚和简要的目的，并使说明容易理解，将使用如图所示的自底向上的取向。术语顶、底、上、下……以及向下取向、向下地、向上、向上地都可以被使用。
现在参照图1描述本发明的第一实施例，其中高压燃料泵10的头部12被图示。泵头部12设有孔14，其中，活塞沿主轴线A往复滑动。孔14的上部部分限定了压缩室16，压缩室16的最顶部靠拢以形成提升阀20的座18，提升阀20控制流体路径22。阀20通常是关闭的，因为通过弹簧它被迫紧靠座18。
在泵头部12上固定有凸缘24，凸缘24设置有沿主轴线A向上延伸的通孔26。该孔以具有向上扩大的部段的圆锥形部分26的形式延伸，所述向上扩大的部段终止在圆柱形螺纹部分28中。布置在所述泵壳体和凸缘24之间的O形环密封该组件。台肩面30在圆锥形部分26和圆柱形螺纹部段28之间形成。螺纹帽32被互补地布置在圆柱形部分28中，并且被紧固以紧靠台肩面30。帽32的内表面设置有凹部34，通气孔36从凹部34延伸贯穿帽32并开口至外侧。在台肩面30和帽32之间伸展的是柔性膜38，柔性膜38分隔圆锥形部分26，所述圆锥形部分26限定了低压室40和凹部34。泵头部12还设置有通到低压室40中的入口通道42。
现在描述泵10的操作。在第一阶段中，所述阀是关闭的，所述燃料通过电动泵被泵入贮存器中，然后其在入口通道42中流动直至到达低压室40。所述燃料，在数巴(bar)的压力下，填充低压室40并且使柔性膜38变形，以便最大化所占有的容积。在凹部34中的空气经由通气孔36排出。
在第二阶段中，随着所述活塞向下移位并且使室16减压，阀20打开。容纳在低压室40中的燃料流到压缩室16中，这是因为燃料一方面被低压吸入，并且另一方面被膜38推动，膜38趋于回复至如图1上所表示的最小伸展位置。由于这种双重作用，所以压缩室16的填充被优化。
现在参照图2描述本发明的第二实施例。与所述第一实施例的主要区别是，在泵头部12上，凸缘24被移除并且被替换为顶帽44，顶帽44具有高顶礼帽的大体形状。顶帽44由冲压金属板制成，并且它设置有横向的顶壁46，圆柱形外围壁48从横向的顶壁46的边缘向下延伸直到形成横向盘状的外围脚部50。脚部50被布置成抵靠泵头部12的互补平面52，从而限定在顶帽44下的低压室40。设置有向内延伸的部分的大螺母54被互补地布置在泵头部12上，并且以密封连接将脚部50保持成抵靠平面52。顶帽44在有弹性特性的薄金属板中被冲压成形，因此当阀20关闭时顶帽44变形，并且燃料在几巴的压力下流入低压室40。变形的顶帽在图2中以虚线表示。
根据所描述的实施例可得到许多替代方案，其中，本发明的核心在于柔性表面，所述柔性表面伸展使得当所述燃料进入所述室中时能够增大所述低压室的内部容积。

Claims (8)

1.一种具有泵头部（12）的高压燃料泵单元（10），其中，入口通道（42）通到低压室（40），所述低压室（40）本身与压缩室（16）流体连通，所述流体连通由阀（20）控制，所述阀（20）被布置成使得：当其关闭时，所述燃料填充所述低压室（40），并且当所述阀打开时，所述燃料从所述低压室（40）流到所述压缩室（16）中，其特征在于，所述泵头部（12）还包括弹性构件，所述弹性构件被布置成使得：当所述阀（20）关闭时，所述弹性构件变形从而增大所述低压室（40）的容积，并且当所述阀（20）打开时，所述燃料在所述弹性构件推动下流到所述压缩室（16）中，所述弹性构件回复到其原来的形状，其中，所述弹性构件在一侧接触所述低压室内的燃料，并且在相反侧接触外面的空气。
2.根据权利要求1所述的泵单元（10），其中，所述低压室（40）具有多个外围壁，所述弹性构件是所述壁中的一个。
3.根据权利要求2所述的泵单元（10），其中，所述低压室（40）被限定在固定至所述泵头部（12）的壳体的顶帽（44）内，所述顶帽（44）具有从所述泵壳体延伸出来的圆柱形壁（48），所述弹性构件是横向的顶壁。
4.根据权利要求3所述的泵单元（10），其中，所述顶帽（44）由薄金属板制成，所以所述横向的顶壁是柔性的，并且形成所述弹性构件。
5.根据权利要求1所述的泵单元（10），进一步包括固定在泵头部（12）上的凸缘（24），所述凸缘（24）设置有通孔，所述通孔形成了所述低压室（40）的侧壁，所述孔被所述弹性构件封闭。
6.根据权利要求5所述的泵单元（10），其中，所述孔设有内螺纹，以紧靠内台肩面（30）接收螺纹帽（32），所述弹性构件是在所述台肩面（30）和所述螺纹帽（32）之间伸展的弹性膜。
7.根据权利要求6所述的泵单元（10），其中，所述螺纹帽的内部面的表面设有凹部（34），所述凹部（34）限定了所述内部面的所述表面和所述弹性膜之间的互补室。
8.根据权利要求7所述的泵单元（10），进一步设置有通气孔（36），所述通气孔（36）把所述互补室联接到外面。
CN201480042346.6A 2013-07-26 2014-06-30 高压泵 Active CN105593510B (zh)

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Application Number Priority Date Filing Date Title
GBGB1313338.4A GB201313338D0 (en) 2013-07-26 2013-07-26 High Pressure Pump
GB1313338.4 2013-07-26
PCT/EP2014/063805 WO2015010856A1 (en) 2013-07-26 2014-06-30 High pressure pump

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CN105593510B true CN105593510B (zh) 2019-04-16

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US (1) US10267278B2 (zh)
EP (1) EP3025051B1 (zh)
JP (2) JP2016527434A (zh)
KR (1) KR102189005B1 (zh)
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GB (1) GB201313338D0 (zh)
WO (1) WO2015010856A1 (zh)

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EP3237747B1 (en) * 2014-12-24 2020-02-26 Robert Bosch GmbH Pump unit for feeding fuel, preferably diesel fuel, to an internal combustion engine
DE102015220870A1 (de) 2015-10-26 2017-04-27 Robert Bosch Gmbh Hochdruckpumpe
ITUB20159778A1 (it) * 2015-12-30 2017-06-30 Bosch Gmbh Robert Pompa per alimentare carburante ad alta pressione ad un motore a combustione interna
ITUA20161816A1 (it) * 2016-03-18 2017-09-18 Bosch Gmbh Robert Gruppo di pompaggio per alimentare combustibile, preferibilmente gasolio, ad un motore a combustione interna
US11231138B2 (en) 2016-09-26 2022-01-25 Eagle Industry Co., Ltd. Metal diaphragm damper
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EP3025051B1 (en) 2019-05-08
JP2016527434A (ja) 2016-09-08
WO2015010856A1 (en) 2015-01-29
JP6695848B2 (ja) 2020-05-20
CN105593510A (zh) 2016-05-18
KR20160033687A (ko) 2016-03-28
US10267278B2 (en) 2019-04-23
KR102189005B1 (ko) 2020-12-10

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