CN107076084A - 泵，尤其是燃料高压泵 - Google Patents

泵，尤其是燃料高压泵 Download PDF

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CN107076084A
CN107076084A CN201580062800.9A CN201580062800A CN107076084A CN 107076084 A CN107076084 A CN 107076084A CN 201580062800 A CN201580062800 A CN 201580062800A CN 107076084 A CN107076084 A CN 107076084A
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bearing sleeve
pump
pump according
roller
pressure fuel
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G·迈尔
M·舍特尔
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Robert Bosch GmbH
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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
    • F02M59/02—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
    • 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
    • F02M59/04—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
    • 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
    • F04B1/0408—Pistons
    • 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
    • F04B1/0413—Cams
    • F04B1/0417—Cams consisting of two or more cylindrical elements, e.g. rollers
    • 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
    • F04B1/0426—Arrangements for pressing the pistons against the actuated cam; Arrangements for connecting the pistons to the actuated cam
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/20—Sliding surface consisting mainly of plastics
    • F16C33/201—Composition of the plastic
    • 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
    • F02M2200/02—Fuel-injection apparatus having means for reducing wear
    • 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
    • F02M2200/90—Selection of particular materials
    • F02M2200/9015—Elastomeric or plastic 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
    • 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
    • F02M37/06—Feeding by means of driven pumps mechanically driven
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/12—Polyetheretherketones, e.g. PEEK
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/02—Plastics; Synthetic resins, e.g. rubbers comprising fillers, fibres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2208/00—Plastics; Synthetic resins, e.g. rubbers
    • F16C2208/20—Thermoplastic resins
    • F16C2208/58—Several materials as provided for in F16C2208/30 - F16C2208/54 mentioned as option
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/42—Pumps with cylinders or pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H53/00—Cams or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/06—Cam-followers

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Sliding-Contact Bearings (AREA)

Abstract

泵，尤其是燃料高压泵，该泵具有至少一个泵元件(10)，该泵元件具有滚子推杆(20)，滚子(42)以可旋转的方式通过支承套筒(46)在该滚子推杆中支承在支承销(44)上，滚子在驱动轴(24)的凸轮(22)上滚动。支承套筒(46)由塑料材料制成，尤其是由PEEK、聚醚醚酮或由PPA、聚邻苯二甲酰胺制成。

Description

泵，尤其是燃料高压泵
技术领域
本发明从权利要求1类型的泵，尤其是燃料高压泵出发。
背景技术
呈燃料高压泵形式的这种泵通过DE 10 2010 063 363 A1已知。该泵具有泵元件，该泵元件具有滚子推杆，泵活塞通过该滚子推杆支撑在驱动轴的凸轮上。在滚子推杆中，滚子可旋转地支承在支承销上，该滚子贴靠在凸轮上。滚子通过支承套筒支承在支承销上。支承套筒通常由金属的基体尤其是钢基体构成，所述基体设有由滑动轴承材料制成的涂层。支承套筒的制造由于所需的高精加工和涂层的施加而是费事的。此外在支承套筒中在该支承套筒与滚子和/或支承销之间出现不均匀的压力分布，其中，在支承套筒的边缘区域中出现更高的压力，使得在那里支承套筒出现更大的磨损。已知的钢制支承套筒在润滑不足的情况下仅具有差的自润滑特性，使得在该情况下会出现支承套筒和/或滚子和/或支承销的强的磨损。
发明内容
具有权利要求1特征的根据本发明的泵与之相比具有的优点是，支承套筒能简单地制成并且通过塑料材料的比钢更高的弹性而使得能实现更均匀的压力分布。
在从属权利要求中给出根据本发明的泵的有利构型和扩展方案。在权利要求2至5中给出适用于支承套筒的塑料材料。根据权利要求6和7的扩展方案使得能针对以下情况实现良好的自润滑特性：支承套筒的润滑不足。通过根据权利要求8至10的构造提供支承套筒的简单制造。
附图说明
本发明的实施例在附图中示出并且在后面的描述中详细解释。图1以示意性纵剖图示出泵而图2示出泵的滚子推杆的局部的放大图。
具体实施方式
在图1中示出泵，该泵尤其是用于内燃机燃料喷射装置的燃料高压泵。该泵具有至少一个泵元件10，该泵元件具有以能在壳体部分14的柱形孔12中移动且密封的方式受引导的泵活塞16，该壳体部分在后面称为气缸头。泵活塞16以其伸到柱形孔12中的端部限界泵工作室18。泵活塞16的从柱形孔12伸出的端部与滚子推杆20连接。该滚子推杆20支撑在驱动轴24的凸轮22上，通过该凸轮在驱动轴24发生旋转运动时引起泵活塞16在柱形孔12中的升降运动。驱动轴24可为泵的部分或内燃机的部分，例如其凸轮轴或其他轴。
泵工作室18能通过进入阀26与到泵的低压入口27连接并能通过排出阀28与高压出口连接，该高压出口例如通到高压存储器30。低压入口27例如可由输送泵馈给，该输送泵抽吸存储容器的燃料。
滚子推杆20具有空心柱形的推杆体40，泵活塞16的从柱形孔12伸出的端部在推杆体的背离凸轮22的一侧伸到该推杆体中。在推杆体40的面向凸轮22的一侧上，滚子42可旋转地支承在推杆体中，该滚子在凸轮22上滚动。在推杆体40中固定有支承销44，滚子42通过支承套筒46可旋转地支承在该支承销上。推杆体40具有孔48，该孔至少近似垂直于泵活塞16的纵轴线17地延伸，其中，孔48的之间在该孔的在纵向看位于中间的区域中增大并且孔48在其中间区域中朝凸轮22敞开。支承销44可在其端部区域压入到孔48中或例如借助弹动的安全环50紧固在孔48中，使得该支承销不能在其纵轴线方向上从孔48推出。
支承套筒46构造成空心柱形并且以小的径向缝隙布置在支承销44的中间区域上。空心柱形的滚子42以小的径向缝隙支承在支承套筒46上。滚子42在此布置在孔48的中间区域中，该中间区域的直径较大，并且滚子超过孔48的中间区域的敞开的一侧朝凸轮22突出。支承套筒46由塑料材料制成，优选由PEEK、聚醚醚酮或由PPA、聚邻苯二甲酰胺制成。还可使用聚酰亚胺、聚酰胺酰亚胺或PPS、聚苯硫醚作为塑料材料。
可以给所述塑料材料混入填充剂，通过该填充剂尤其可改善支承套筒46在润滑不充分的情况下的自润滑特性。例如可使用碳纤维和/或玻璃纤维和/或钾钛酸盐和/或聚芳酰胺。还可给塑料材料中混入改善支承套筒的滑动特性的填充剂。为此，例如可使用可包含石墨的固体润滑颗粒作为填充剂。也可使用二氧化钛和/或硫化锌和/或聚四氟乙烯作为添加剂。
支承套筒46优选以注塑方法制成，其中，按照注塑过程而不需要其他加工步骤或至少仅需加工支承套筒46的内直径和/或外直径。替代地，支承套筒46也可以压制方法制成。支承套筒46也还可由棒料制成，从棒料中将具有所需的宽度的区段切下来。

Claims (10)

1.一种泵，尤其是燃料高压泵，该泵具有至少一个泵元件(10)，该泵元件具有滚子推杆(20)，滚子(42)以可旋转的方式通过支承套筒(46)在滚子推杆中支承在支承销(44)上，该滚子在驱动轴(24)的凸轮(22)上滚动，其特征在于，所述支承套筒(46)由塑料材料制成。
2.根据权利要求1所述的泵，其特征在于，所述支承套筒(46)由PEEK、聚醚醚酮制成。
3.根据权利要求1所述的泵，其特征在于，所述支承套筒(46)由PPA、聚邻苯二甲酰胺制成。
4.根据权利要求1所述的泵，其特征在于，所述支承套筒(46)由PPS、聚苯硫醚制成。
5.根据权利要求1所述的泵，其特征在于，所述支承套筒(46)由聚酰亚胺或聚酰胺酰亚胺制成。
6.根据权利要求1至5中任一项所述的泵，其特征在于，在所述支承套筒(46)的塑料材料中添加有至少一种填充剂，以改善所述支承套筒(46)在润滑小的情况下的自润滑特性。
7.根据权利要求6所述的泵，其特征在于，使用碳纤维和/或玻璃纤维和/或钾钛酸盐和/或聚芳酰胺和/或二氧化钛和/或硫化锌和/或石墨和/或聚四氟乙烯作为填充剂。
8.根据前述权利要求中任一项所述的泵，其特征在于，所述支承套筒(46)以注塑方法制成。
9.根据权利要求1至7中任一项所述的泵，其特征在于，所述支承套筒(46)以压制方法制成。
10.根据权利要求1至7中任一项所述的泵，其特征在于，所述支承套筒(46)制造为棒料的区段。
CN201580062800.9A 2014-11-21 2015-10-27 泵，尤其是燃料高压泵 Pending CN107076084A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014223795.5A DE102014223795A1 (de) 2014-11-21 2014-11-21 Pumpe, insbesondere eine Kraftstoffhochdruckpumpe
DE102014223795.5 2014-11-21
PCT/EP2015/074874 WO2016078881A1 (de) 2014-11-21 2015-10-27 Pumpe, insbesondere eine kraftstoffhochdruckpumpe

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US (1) US10280884B2 (zh)
EP (1) EP3221577B1 (zh)
JP (1) JP2017532496A (zh)
KR (1) KR20170085585A (zh)
CN (1) CN107076084A (zh)
BR (1) BR112017010125B1 (zh)
DE (1) DE102014223795A1 (zh)
WO (1) WO2016078881A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113882985A (zh) * 2020-07-01 2022-01-04 舍弗勒技术股份两合公司 用于高压燃料泵的挺杆

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016210842A1 (de) 2016-06-17 2017-12-21 Robert Bosch Gmbh Kolbenpumpe
DE102016225433A1 (de) * 2016-12-19 2018-06-21 Robert Bosch Gmbh Kraftstoff-Hochdruckpumpe, sowie Kraftstoff-Filtereinrichtung für eine Kraftstoff-Hochdruckpumpe
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