CN102197211B - 用于内燃机的燃料高压泵 - Google Patents
用于内燃机的燃料高压泵 Download PDFInfo
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- 239000000446 fuel Substances 0.000 title claims abstract description 81
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 6
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- 230000002349 favourable effect Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
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- 239000002828 fuel tank Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/361—Valves being actuated mechanically
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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
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/005—Pressure relief valves
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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
- F02M59/04—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
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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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
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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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
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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
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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
- F02M59/46—Valves
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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
- 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
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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
- 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
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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
- 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
- F02M63/023—Means for varying pressure in common rails
- F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
- F02M63/0245—Means for varying pressure in common rails by bleeding fuel pressure between the high pressure pump and the common rail
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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
- 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
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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
Abstract
本发明涉及一种用于直接喷射的内燃机的燃料高压泵(10),具有泵壳体(58)、进入侧的低压区域(12)及排出侧的高压区域(14)。该燃料高压泵(10)具有用于调节该高压区域(14)中的恒定压力的纯机械的压力调节装置(54)。
Description
技术领域
本发明涉及根据权利要求1的前序部分的用于内燃机的高压泵。
背景技术
直接喷射的燃料高压泵通常设有一个低压区域及一个高压区域。一个电动输送泵将燃料由一个油箱输送到低压区域中,燃料由低压区域通过燃料高压泵输送到一个与高压区域连接的燃料汇流导管(称为“共轨”)中。燃料汇流导管中的压力通常通过压力调节阀和/或量控制阀来调节,其中该阀主要通过对压力传感器信号的求值由控制装置和或调节装置来控制。在此情况下该压力调节阀也可机械地工作。
由EP0299337A2,EP0837986B1,EP0974008B1及DE19612413A1已公知了用于燃料压力的调节的装置。
由DE10327411A1公知了用于具有一个限压阀的燃料高压泵的限压阀。
发明内容
本发明的任务在于,给出或进一步开发一种开始部分所述类型的燃料高压泵,它能可靠地工作及紧凑地构成。此外该燃料高压泵在成本上应为有利的。
该任务将通过具有权利要求1的特征的用于内燃机的燃料高压泵来解决。对于本发明重要的特征还可在以下说明及附图中得到,其中这些特征既可单独地也可不同组合地作为本发明的重要部分,而无需对其明确地指出。在从属权利要求中可得到其有利的进一步构型。
通过燃料高压泵的构型一方面节省了机动车的发动机区域中的结构空间,另一方面通过将压力调节装置巧妙地组合在燃料高压泵中仍保持了燃料高压泵的原有外部尺寸。并且不需要附加的液压导管。这就有利地导致了燃料高压泵的非常紧凑的结构方式。此外由于取消了燃料的量控制燃料高压泵将不需要带有所属未级及电控制导线的量控制阀。并还可取消用于电控制所需的压力传感器。这使得本发明在成本上特别有利并还节省了发动机功率。因为低压区域中不需要的燃料量被控制流出,也保证了限压功能。
本发明基于这样的构思,即在内燃机上使用少数压力传感的燃料系统、如恒压系统的情况下,可取消对燃料的昂贵的电的量控制。在该前提下高压区域中的压力调节则可通过一个组合在高压泵中的机械的压力调节装置来实现。该压力调节装置在液压上被设置在低压区域与高压区域之间。随着该压力调节装置事先调节好的打开压力的达到所不需要的燃料量由高压区域导回到低压区域中由此在内燃机工作中可在高压侧上调节到一个至少基本上为恒定的压力。
在一个进一步构型中提出:该机械的压力调节装置包括一个机械的压力调节阀,尤其一个机械的、例如由弹簧加载的单向阀。机械的压力调节阀的结构相对简单,可靠及由此成本上有利。这尤其适用于单向阀。此外这种阀的结构特别小及因此可毫无问题地组合在高压燃料泵中。
特别有利的是,在压力调节装置的阀元件的上游设有一个机械的节流器,以致减小了、尤其在使用单缸燃料泵的情况下由于不希望的高压泵的压力波动对燃料汇流导管中的调节性能的副作用。由此减小了压力调节阀的磨损。该节流器可被构成单独的节流元件或在高压侧输入通道、阀座体或泵壳体内的接收孔中横截面的缩小部分。
此外还提出,压力调节装置被偏心地设置在燃料高压泵的泵壳体内的一个孔中;及也可能偏心地设置一个从压力调节阀延伸到高压区域的连接孔。泵壳体内中间的中心区域将众所周知地保留燃料高压泵的原有泵功能。但在偏心的区域中可得到足够的空间来组合压力调节功能。这使得燃料高压泵成为一个可非常有效地使用及紧凑地构成的装置。此外这使得泵壳体的切削加工更简单。
此外还提出,通过一个阀弹簧和/或压力调节装置的阀件与阀座之间的一个密封直径来确定高压区域中的边界压力。这意味着,在压力调节装置设计时及可能在燃料高压泵组装时可精确调整该边界压力。对制造好的或已安装在机动车中的燃料高压泵则不需要任何调整。
对此补充地提出,压力调节装置具有一个筒形的阀壳体。由此压力调节装置可作为单独的组件来制造与调整及接着置入到泵壳体中并例如通过压配合被保持在推筒与泵壳体之间。该压力调节阀的调整很简单,因为在打开压力的液压调节时用于其它安装步骤的泵壳体无需被净化。此外当错误的调节时泵壳体也不会成为一个废品部件。
有利的还在于,进入阀相对燃料高压泵的泵活塞同轴线地布置。这就允许达来自低压区域的燃料的高供给率,当燃料高压泵的压力阻尼器与进入阀之间的相应连接孔的直径比进入阀的开度大时,该供给率还将由此升高。
附图说明
以下将借助附图对本发明的实施例作示范的说明。附图表示:
图1:具有一个燃料高压泵的燃料系统的概图;
图2:图1中燃料高压泵的一个透视图;
图3:带有剖割的进入区域的图1中燃料高压泵的一个部分纵截面;
图4:带有剖割的排出区域的图1中燃料高压泵的一个纵截面;
图5:带有剖割的压力调节阀的图1中燃料高压泵的一个纵截面(图6中剖面V-V);
图6:图1中燃料高压泵的一个横截面;及
图7:图2中燃料高压泵的一个变型的类似图5的视图。
具体实施方式
现在借助图1来对根据本发明的燃料高压泵的结构及一般功能作原理性的描述。图1表示具有一个燃料高压泵10的用于内燃机(未示出)的燃料系统8的概图。该燃料系统如还将描述的、被分为图1中左面所示的一个低压区域12及右面所示的一个高压区域14。一个设置在低压区域12中的输送泵16用输送压力将燃料由燃料储存容器18通过一个低压导管20泵入到燃料高压泵10的一个进入接管22中。在燃料高压泵10中在低压区域12中设有一个过滤器24及一个压力阻尼器26。压力阻尼器26阻尼燃料高压泵10中低压侧存在的压力波动及在高转速及凸轮转数时也能照顾到高输送率。
燃料通过进入阀28被抽吸到燃料高压泵10的一个工作室30中。工作室30的容积取决于泵活塞32在泵缸34中的位置。当泵活塞32向下运动期间工作室30增大,由此抽吸燃料。当泵活塞32向上运动期间燃料被压缩升压及通过排出阀36与属于高压区域14的排出接管38并通过一个高压导管40继续输送到一个轨42中。在轨42上连接着喷射阀44,这些喷射阀直接地将燃料喷射到内燃机的燃烧室46中。
泵活塞32通过一个凸轮48来驱动,该凸轮由内燃机驱动-例如通过凸轮轴或曲轴(未示出)来驱动。凸轮48也可为凸轮轴或曲轴的一部分。泵活塞32相对凸轮48通过一个密封件50进行密封。在泵活塞32与泵缸34之间的间隙中形成的活塞泄漏通过一个回流导管52导回低压区域12中。
因为在常规工作中泵活塞32的输送量大于喷射的燃料量,故在高压侧13上不需要的燃料量通过一个纯机械地工作的压力调节阀54再回送到低压区域12中。因此燃料汇流导管42中的压力基本上相应于压力调节阀的打开压力。
并且尤其当使用单缸泵时在高压区域14中也形成压力波动,该波动对轨42中的压力调节功能产生副面影响。为了去耦合可在压力调节阀54的前面对液流设置一个节流器56,由此来减小压力调节阀54前面的压力波动并减小其磨损。
以下的附图以透视图或截面图更为详细地表示燃料高压阀10的结构。这里应指出,出于简化及清楚的原因不是在所有附图中对所有部件设置标号。
图2以一个透视图表示燃料高压泵10。在一个泵壳体58上设有进入接管22(低压区域12)及排出接管38(高压区域14)。在进入接管22中组合了一个过滤器64。燃料高压泵10还包括一个向内凹陷的盖66及一个用于将燃料高压泵10例如固定在内燃机的汽缸头上的法兰板68。这两个部件66及68均与泵壳体58固定地连接。泵活塞32由泵壳体58向下伸出。一个活塞弹簧70的一侧支撑在一个弹簧盘72上及另一侧(不可看到)支撑在泵壳体58上,弹簧盘与泵壳体58固定地连接。活塞弹簧70的力通过弹簧盘72导入泵活塞32中。因此在工作中可保证泵活塞32持续地跟随凸轮的轮廓。
如由图3可看到的,带有过滤器54的进入接管22通过一个相对泵壳体58的纵轴线73偏心的孔74与一个位于盖66下面的用于压力阻尼器26的接收室(无标号)相连接。该接收室又通过两个相对泵壳体58同轴线的孔区段78及80以及进入阀28可与泵工作室30连接。泵活塞32可移动地支承在一个缸套82中。在泵活塞32的抽吸阶段期间燃料通过孔78及80以及进入阀到达泵工作室30中。
如由图4中可看到的,泵工作室30及排出阀36在液压上通过泵壳体58中的一个孔88相互连接。由图5及6则可看到,泵壳体58中的压力调节阀54偏心地设置在一个与纵轴线73平行的孔90中。图5的截面不位于中间,而是与纵轴线73隔有距离。压力调节阀54在高压侧通过一个亦与纵轴线73隔有距离的孔92与排出阀36相连接。压力调节阀54在排出侧通过孔90与用于压力阻尼器26的接收室相连接。压力调节阀54包括一个带有输入孔95的阀座体94上的阀座(无标号),一个滚珠阀体96,一个弹簧导向件98,一个阀弹簧100及一个弹簧支架102。
阀座体94例如通过压配合紧固地安装在孔90中。阀弹簧100通过弹簧导向件98将阀体96压在阀座中。视弹簧力及阀体96与阀座94之间的密封直径而定得到一个确定的打开压力。在图5的上侧阀弹簧支撑在弹簧支架102上。弹簧支架102则(例如通过压配合)被紧固在孔90中。在压力调节阀安装时通过弹簧支架102的压入距离来调节打开压力。
燃料高压泵10如下地工作:当泵活塞32向上运动时(“抽吸冲程”)燃料通过进入阀被吸入工作室30。当其向下运动时(“输送冲程”)工作室30中的燃料被压缩并通过排出阀36输送到高压导管40中。如果高压区域14中的压力超过压力调节阀54的边界压力,该压力调节阀则打开,其方式是阀体98从阀座上抬起,以致燃料可流出到压力阻尼器26的接收室并由此流出到低压区域12。如果高压区域14中的压力低于压力调节阀54的边界压力,该压力调节阀则又关闭,以此方式使高压区域14中的压力基本上保持恒定,即保持在压力调节阀54的边界压力或打开压力上。
图7表示燃料高压泵10的一个变型。这里也适用的是,与已描述的部件及区域设有等同功能的部件及区域带有相同的标号及不再加以说明。
在所示的变型方案中压力调节阀54作为筒型方案来实现。这里压力调节阀的组装及打开压力的调节可在泵壳体58的外面进行。阀座体94被插入到套筒104中并例如通过压配合来保持。在阀座体96组装后,将弹簧导向件98及阀弹簧100以及弹簧支架102插入到套筒104中。并且这里也通过弹簧支架102的位置来调节弹簧压力及由此调节打开压力。弹簧支架102如图7中所示被旋拧在套筒104中。也可对螺旋方案变换地使用压配合。在压力调节阀54被安装及调节后,它作为组件被插入到泵壳体58中及例如通过套筒104与泵壳体58之间的压配合来保持。
在图7中所示的燃料高压泵10的方案中还在孔92中放置了一个节流器56。也可考虑,节流器56被布置在孔90中,也可对节流器56变换地在阀座体94中使输入孔95具有一个缩小的横截面,由此也可实现节流功能。
Claims (11)
1.用于直接喷射的内燃机的燃料高压泵(10),具有泵壳体(58)、进入阀(28)、排出阀(36)、压力阻尼器(26)、进入侧的低压区域(12)及排出侧的高压区域(14),其特征在于:该燃料高压泵(10)具有用于调节该高压区域(14)中的恒定压力的纯机械的压力调节装置(54),所述压力调节装置(54)的进口与所述燃料高压泵(10)的所述高压区域(14)相连接,且所述压力调节装置(54)的出口与压力阻尼器(26)的接收室相连接,所述压力阻尼器(26)设置在压力阻尼器(26)的接收室中,其中,所述泵壳体(58)与燃料高压泵(10)的盖(66)固定地连接,且压力阻尼室(26)的接收室位于所述盖(66)下面,进入接管(22)通过一个相对泵壳体(58)的纵轴线(73)平行的并且偏心的孔(74)与一个位于盖(66)下面的用于压力阻尼器(26)的接收室相连接,该接收室通过进入阀(28)与泵工作室(30)相连接,泵壳体(58)中的压力调节装置(54)偏心地设置在一个与泵壳体(58)的纵轴线(73)平行的孔(90)中,所述压力调节装置(54)是压力调节阀,如果高压区域(14)中的压力超过压力调节阀的边界压力,该压力调节阀则打开,如果高压区域(14)中的压力低于压力调节阀的边界压力,该压力调节阀则又关闭,使得高压区域(14)中的压力恒定地保持在压力调节阀的边界压力上。
2.根据权利要求1的燃料高压泵(10),其特征在于:该机械的压力调节装置包括机械的压力调节阀。
3.根据权利要求1或2的燃料高压泵(10),其特征在于:在所述压力调节装置(54)的阀元件(54)的上游设有节流器(56)。
4.根据权利要求3的燃料高压泵(10),其特征在于:所述节流器(56)被构成在所述压力调节阀(54)的阀座壳体中和/或所述泵壳体(58)中的用于所述压力调节装置(54)的连接孔(92)中和/或用于所述压力调节装置(54)的输入通道中。
5.根据权利要求1-2、4中任一项的燃料高压泵(10),其特征在于:所述压力调节装置(54)在圆柱形的泵壳体(58)中被设置在一个相对所述泵壳体(58)的纵轴线(73)错开布置的接收孔(90)中。
6.根据权利要求1-2、4中任一项的燃料高压泵(10),其特征在于:相对所述泵壳体(58)的纵轴线(73)横向地从所述压力调节装置(54)延伸到所述高压区域(14)的连接孔(92)与所述纵轴线(73)隔有距离。
7.根据权利要求1-2、4中任一项的燃料高压泵(10),其特征在于:所述压力调节装置(54)具有阀弹簧(100)和/或在阀件(96)与阀座(94)之间的密封直径,通过该阀弹簧和/或该密封直径确定所述高压区域(14)中的边界压力。
8.根据权利要求1-2、4中任一项的燃料高压泵(10),其特征在于:所述压力调节装置(54)具有筒形的阀壳体(104),该阀壳体被置入到所述泵壳体(58)的接收孔(90)中。
9.根据权利要求1-2、4中任一项的燃料高压泵(10),其特征在于:相对所述燃料高压泵(10)的泵活塞(32)同轴线地设置所述进入阀(28)。
10.根据权利要求2的燃料高压泵(10),其特征在于:所述机械的压力调节阀是机械的单向阀(54)。
11.根据权利要求8的燃料高压泵(10),其特征在于:该阀壳体压配合到该接收孔中。
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Families Citing this family (43)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010064219A1 (de) * | 2010-12-27 | 2012-06-28 | Robert Bosch Gmbh | Druckregelanordnung eines Kraftstoffeinspritzsystems mit einem druckseitig von einer Pumpe angeordneten Ventil |
DE102010064221A1 (de) * | 2010-12-27 | 2012-06-28 | Robert Bosch Gmbh | Einspritzpumpe für ein Kraftstoffeinspritzsystem |
JP5310748B2 (ja) * | 2011-01-12 | 2013-10-09 | トヨタ自動車株式会社 | 高圧ポンプ |
DE102011005487A1 (de) * | 2011-03-14 | 2012-09-20 | Robert Bosch Gmbh | Ventileinrichtung, insbesondere Auslassventil einer Kraftstoff-Hochdruckpumpe einer Brennkraftmaschine |
US20130312706A1 (en) * | 2012-05-23 | 2013-11-28 | Christopher J. Salvador | Fuel system having flow-disruption reducer |
DE102012222823A1 (de) * | 2012-06-28 | 2014-01-02 | Robert Bosch Gmbh | Kolben-Kraftstoffpumpe |
US9599082B2 (en) * | 2013-02-12 | 2017-03-21 | Ford Global Technologies, Llc | Direct injection fuel pump |
US9429124B2 (en) * | 2013-02-12 | 2016-08-30 | Ford Global Technologies, Llc | Direct injection fuel pump |
DE102013204327A1 (de) * | 2013-03-13 | 2014-09-18 | Robert Bosch Gmbh | Zylinderkopfrohteil, Zylinderkopf und Hochdruckpumpe für Brennstoffeinspritzanlagen |
DE102013210760A1 (de) * | 2013-06-10 | 2014-12-11 | Robert Bosch Gmbh | Kraftstoff-Hochdruckpumpe für ein Kraftstoffsystem für eine Brennkraftmaschine |
US9759174B2 (en) * | 2013-07-10 | 2017-09-12 | Stanadyne Llc | Constant pressure self-regulating common rail single piston pump |
GB201322264D0 (en) * | 2013-12-17 | 2014-01-29 | Delphi Tech Holding Sarl | High Pressure Pump |
US10260444B2 (en) * | 2013-12-19 | 2019-04-16 | Fca Us Llc | Direct injection fuel system with controlled accumulator energy storage |
US9316161B2 (en) | 2014-04-02 | 2016-04-19 | Ford Global Technologies, Llc | High pressure fuel pumps with mechanical pressure regulation |
DE102014212646A1 (de) * | 2014-04-15 | 2015-10-15 | Robert Bosch Gmbh | Kraftstoff-Hochdruckpumpe, mit einem Auslassventil mit einem Ventilkörper und einer Ventilkugel |
DE102014209288A1 (de) * | 2014-05-16 | 2015-11-19 | Robert Bosch Gmbh | Kolbenpumpe, insbesondere Kraftstoffpumpe für ein Kraftstoffsystem für eine Brennkraftmaschine |
US9726105B2 (en) | 2014-12-02 | 2017-08-08 | Ford Global Technologies, Llc | Systems and methods for sensing fuel vapor pressure |
US10094319B2 (en) | 2014-12-02 | 2018-10-09 | Ford Global Technologies, Llc | Optimizing intermittent fuel pump control |
US9546628B2 (en) | 2014-12-02 | 2017-01-17 | Ford Global Technologies, Llc | Identifying fuel system degradation |
US9771909B2 (en) | 2014-12-02 | 2017-09-26 | Ford Global Technologies, Llc | Method for lift pump control |
KR20160121010A (ko) | 2015-04-09 | 2016-10-19 | 주식회사 현대케피코 | 연료의 맥동을 저감시키는 고압 연료펌프의 댐퍼구조체 |
JP6676054B2 (ja) * | 2015-07-31 | 2020-04-08 | イーグル工業株式会社 | ダイアフラムダンパ |
DE102015215186B3 (de) * | 2015-08-10 | 2016-12-15 | Continental Automotive Gmbh | Kraftstoffhochdruckpumpe |
CN105952562B (zh) * | 2016-06-18 | 2023-11-14 | 常州博瑞油泵油嘴有限公司 | 一种单缸柴油机用复合式高压共轨泵 |
DE102016225433A1 (de) * | 2016-12-19 | 2018-06-21 | Robert Bosch Gmbh | Kraftstoff-Hochdruckpumpe, sowie Kraftstoff-Filtereinrichtung für eine Kraftstoff-Hochdruckpumpe |
DE102017202310A1 (de) * | 2017-02-14 | 2018-08-16 | Robert Bosch Gmbh | Drosselelement sowie Niederdruckkreislauf eines Kraftstoffeinspritzsystems mit einem Drosselelement |
JP6766699B2 (ja) | 2017-03-07 | 2020-10-14 | 株式会社デンソー | 高圧ポンプ |
TW201945639A (zh) * | 2018-03-14 | 2019-12-01 | 新加坡商祕方能源私人有限公司 | 用於內燃機之泵及形成此泵之方法 |
WO2019221260A1 (ja) | 2018-05-18 | 2019-11-21 | イーグル工業株式会社 | ダンパ装置 |
EP3795818A4 (en) | 2018-05-18 | 2022-02-16 | Eagle Industry Co., Ltd. | METAL DIAPHRAGM SHOCK MOUNTING STRUCTURE |
US11346312B2 (en) | 2018-05-18 | 2022-05-31 | Eagle Industry Co., Ltd. | Damper unit |
JP7074563B2 (ja) | 2018-05-18 | 2022-05-24 | イーグル工業株式会社 | ダンパ装置 |
US11326568B2 (en) * | 2018-05-25 | 2022-05-10 | Eagle Industry Co., Ltd. | Damper device |
ES2965537T3 (es) * | 2018-11-27 | 2024-04-15 | Stanadyne Operating Company Llc | Bomba de combustible de alta presión con regulación de presión mecánica |
KR102107464B1 (ko) * | 2018-12-20 | 2020-05-07 | 주식회사 현대케피코 | 고압펌프 |
KR102098376B1 (ko) * | 2018-12-21 | 2020-05-26 | 주식회사 현대케피코 | 고압펌프용 압력해제밸브 |
JP2020143586A (ja) * | 2019-03-04 | 2020-09-10 | 株式会社デンソー | 圧力調整装置 |
DE102021208052A1 (de) | 2021-07-27 | 2023-02-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoff-Hochdruckpumpe |
DE102021208119A1 (de) * | 2021-07-28 | 2023-02-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoff-Hochdruckpumpe |
DE102021208122A1 (de) | 2021-07-28 | 2023-02-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoff-Hochdruckpumpe |
DE102021208117A1 (de) * | 2021-07-28 | 2023-02-02 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoff-Hochdruckpumpe |
DE102021209835A1 (de) | 2021-09-07 | 2023-03-09 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoff-Hochdruckpumpe |
DE102021214508A1 (de) * | 2021-12-16 | 2023-06-22 | Robert Bosch Gesellschaft mit beschränkter Haftung | Kraftstoffpumpe |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10327411A1 (de) * | 2002-10-15 | 2004-04-29 | Robert Bosch Gmbh | Druckbegrenzungsventil sowie Kraftstoffsystem mit einem solchen Druckbegrenzungsventil |
DE102007010502A1 (de) * | 2007-03-05 | 2008-09-11 | Robert Bosch Gmbh | Kraftstoffhochdruckpumpe für eine Brennkraftmaschine mit Druckausgleichseinrichtung |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3306214A (en) * | 1964-03-02 | 1967-02-28 | Gen Motors Corp | Pressure control |
US4357931A (en) * | 1980-09-11 | 1982-11-09 | Wolpert Kenneth R | Flameless heat source |
DE3135650A1 (de) * | 1981-09-09 | 1983-03-17 | Robert Bosch Gmbh, 7000 Stuttgart | "ventilsteuerung fuer hubkolben-brennkraftmaschinen mit mechanisch-hydraulischen bewegungsuebertragungsmitteln" |
CH674243A5 (zh) | 1987-07-08 | 1990-05-15 | Dereco Dieselmotoren Forschung | |
US5195876A (en) * | 1991-04-12 | 1993-03-23 | Baker Hughes Incorporated | Plunger pump |
DE4120489A1 (de) * | 1991-06-21 | 1992-12-24 | Bosch Gmbh Robert | Niveauregeleinrichtung fuer fahrzeuge |
DE4237932C2 (de) * | 1992-11-10 | 1997-12-11 | Hydraulik Ring Gmbh | Volumenstromsteuerung für Kraftfahrzeughydraulik, insbesondere für Lenkeinrichtungen von Kraftfahrzeugen |
DE4320620B4 (de) * | 1993-06-22 | 2004-04-01 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen |
US5472990A (en) * | 1994-11-10 | 1995-12-05 | Dennis Chemical Co., Inc. | Method and apparatus for nucleation of polyurethane foam which results in self-adhering microcellular foam |
DE19612413B4 (de) | 1996-03-28 | 2006-06-29 | Siemens Ag | Druckfluid-Versorgungssystem, insbesondere für ein Kraftstoff-Einspritzsystem |
DE19618932C2 (de) | 1996-05-10 | 2001-02-01 | Siemens Ag | Vorrichtung und Verfahren zur Regelung des Kraftstoffdruckes in einem Hochdruckspeicher |
DE19714489C1 (de) | 1997-04-08 | 1998-10-01 | Siemens Ag | Einspritzsystem, Druckventil und Volumenstromregelventil und Verfahren zum Regeln eines Kraftstoffdruckes |
IT1293251B1 (it) * | 1997-07-17 | 1999-02-16 | Ima Spa | Apparato per le macchine a giostra adibite alla tappatura di flaconi o simili con tappi a vite. |
JP3633314B2 (ja) * | 1998-10-14 | 2005-03-30 | 三菱電機株式会社 | 高圧燃料ポンプ装置 |
DE19927079A1 (de) * | 1999-06-15 | 2000-12-21 | Hydraulik Ring Gmbh | Betätigungseinrichtung für eine Sperre, vorzugsweise eine Reibschlußsperre, eines Differentialgetriebes |
JP3767268B2 (ja) * | 1999-09-10 | 2006-04-19 | 三菱電機株式会社 | 高圧燃料供給装置 |
DE10239728A1 (de) * | 2002-08-29 | 2004-03-11 | Robert Bosch Gmbh | Pumpe, insbesondere für eine Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
EP1411236B1 (de) * | 2002-10-19 | 2012-10-10 | Robert Bosch Gmbh | Vorrichtung zum Dämpfen von Druckpulsationen in einem Fluidsystem, insbesondere in einem Kraftstoffsystem einer Brennkraftmaschine |
DE10362411B3 (de) * | 2002-10-19 | 2017-09-07 | Robert Bosch Gmbh | Vorrichtung zum Dämpfen von Druckpulsationen in einem Fluidsystem, insbesondere in einem Kraftstoffsystem einer Brennkraftmaschine |
DE10345725B4 (de) * | 2003-10-01 | 2017-01-05 | Robert Bosch Gmbh | Kraftstoff-Hochdruckpumpe |
DE102004013307B4 (de) * | 2004-03-17 | 2012-12-06 | Robert Bosch Gmbh | Kraftstoffhochdruckpumpe mit einem Druckbegrenzungsventil |
DE102004028998A1 (de) | 2004-06-16 | 2006-01-05 | Robert Bosch Gmbh | Hochdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
DE102004045738B4 (de) * | 2004-09-21 | 2013-05-29 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Steuern einer Brennkraftmaschine |
JP4466340B2 (ja) * | 2004-11-18 | 2010-05-26 | トヨタ自動車株式会社 | 燃料供給装置 |
JP4221760B2 (ja) * | 2005-01-17 | 2009-02-12 | 株式会社デンソー | 高圧燃料ポンプ |
DE102005033634A1 (de) * | 2005-07-19 | 2007-01-25 | Robert Bosch Gmbh | Hochdruck-Kraftstoffpumpe für ein Kraftstoff-Einspritzsystem einer Brennkraftmaschine |
JP4415929B2 (ja) * | 2005-11-16 | 2010-02-17 | 株式会社日立製作所 | 高圧燃料供給ポンプ |
DE102007016134A1 (de) * | 2006-04-25 | 2007-11-08 | Robert Bosch Gmbh | Kraftstoff-Hochdruckpumpe |
JP2008057451A (ja) * | 2006-08-31 | 2008-03-13 | Hitachi Ltd | 高圧燃料供給ポンプ |
DE102007030224A1 (de) * | 2007-06-29 | 2009-01-08 | Robert Bosch Gmbh | Kraftstoffpumpe, insbesondere für ein Kraftstoffsystem einer Brennkraftmaschine |
DE102009043124B4 (de) * | 2009-09-25 | 2011-06-01 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Ermitteln eines an einem Direkteinspritzventil anliegenden Kraftstoffdruckes |
GB2538084B (en) * | 2015-05-06 | 2017-07-19 | Siemens Healthcare Ltd | Actuation arrangement |
-
2008
- 2008-10-28 DE DE102008043217A patent/DE102008043217A1/de not_active Withdrawn
-
2009
- 2009-09-14 CN CN200980142970.2A patent/CN102197211B/zh active Active
- 2009-09-14 EP EP09782970.9A patent/EP2344749B1/de active Active
- 2009-09-14 ES ES09782970.9T patent/ES2585736T3/es active Active
- 2009-09-14 US US13/126,354 patent/US20110209687A1/en not_active Abandoned
- 2009-09-14 WO PCT/EP2009/061875 patent/WO2010049207A1/de active Application Filing
- 2009-09-14 CN CN201610209985.8A patent/CN105888906A/zh active Pending
- 2009-09-14 KR KR1020117009683A patent/KR101644813B1/ko active IP Right Grant
-
2016
- 2016-07-14 US US15/210,120 patent/US20160319795A1/en not_active Abandoned
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10327411A1 (de) * | 2002-10-15 | 2004-04-29 | Robert Bosch Gmbh | Druckbegrenzungsventil sowie Kraftstoffsystem mit einem solchen Druckbegrenzungsventil |
DE102007010502A1 (de) * | 2007-03-05 | 2008-09-11 | Robert Bosch Gmbh | Kraftstoffhochdruckpumpe für eine Brennkraftmaschine mit Druckausgleichseinrichtung |
Also Published As
Publication number | Publication date |
---|---|
CN105888906A (zh) | 2016-08-24 |
CN102197211A (zh) | 2011-09-21 |
ES2585736T3 (es) | 2016-10-07 |
US20110209687A1 (en) | 2011-09-01 |
DE102008043217A1 (de) | 2010-04-29 |
KR20110074891A (ko) | 2011-07-04 |
US20160319795A1 (en) | 2016-11-03 |
WO2010049207A1 (de) | 2010-05-06 |
KR101644813B1 (ko) | 2016-08-02 |
EP2344749A1 (de) | 2011-07-20 |
EP2344749B1 (de) | 2016-05-04 |
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