CN1379844A - 燃料供给装置 - Google Patents

燃料供给装置 Download PDF

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CN1379844A
CN1379844A CN00814355A CN00814355A CN1379844A CN 1379844 A CN1379844 A CN 1379844A CN 00814355 A CN00814355 A CN 00814355A CN 00814355 A CN00814355 A CN 00814355A CN 1379844 A CN1379844 A CN 1379844A
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face
fuel
housing
jointing end
interference ribs
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CN1215256C (zh
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金丸茂树
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Mitsubishi Electric Corp
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Mitsubishi Electric Corp
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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
    • 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
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/103—Mounting pumps on fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/111—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/60—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration
    • B01D29/606—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor integrally combined with devices for controlling the filtration by pressure measuring
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B01D35/027—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks rigidly mounted in or on tanks or reservoirs
    • B01D35/0273—Filtering elements with a horizontal or inclined rotation or symmetry axis submerged in tanks or reservoirs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
    • B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
    • B29C65/20—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools with direct contact, e.g. using "mirror"
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B29C66/1142—Single butt to butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
    • B29C66/542—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles joining hollow covers or hollow bottoms to open ends of container bodies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/91—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux
    • B29C66/914—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux
    • B29C66/9141—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature
    • B29C66/91411—Measuring or controlling the joining process by measuring or controlling the temperature, the heat or the thermal flux by controlling or regulating the temperature, the heat or the thermal flux by controlling or regulating the temperature of the parts to be joined, e.g. the joining process taking the temperature of the parts to be joined into account
    • 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/44—Filters structurally associated with 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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/50—Filters arranged in or on fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0003—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds having particular electrical or magnetic properties, e.g. piezoelectric
    • B29K2995/0005—Conductive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/748—Machines or parts thereof not otherwise provided for
    • B29L2031/7496—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
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/30—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by heating means

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
  • Filtration Of Liquid (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

一种燃料供给装置,沿着上壳体(3)和下壳体(13)的接合端面(3a、13a)设置相互对向的抵接肋(3b、13b),其处在空隙槽(3c、13c)之间,比接合端面(3a、13a)更低,采用熔融压接,以使双方抵接肋(3b、13b)抵接,从而由抵接肋(3b、13b)决定壳体温(11)的纵向尺寸。而且,热熔接完成时,使溢料(21)储存在由抵接肋(3b、13b)封闭的储存空间(22)。

Description

燃料供给装置
技术领域
本发明涉及从燃料箱向内燃机等对燃料加压供给的燃料供给装置，尤其是防止利用树脂部件的熔接形成包含燃料流路的壳体时产生溢料的影响。
背景技术
图4、图5是国际公开号WO96/23967号公报公开的以往燃料供给装置图，图4是侧视图，图5俯视图、图6是形成壳体的热板熔接说明图，图7是图5中X-Y-Z剖视图。
图中1是燃料箱，2是燃料箱1的开口部。设置合成树脂制盖3，以遮住开口部2。密封用的密封垫圈4装在盖3与燃料箱1之间。
作为燃料供给系统的功能部件的燃料泵5、燃料过滤器6、增压器7、燃料液面计8、电气连接器 9、输出管10一体地组装在盖3上，形成组件化。
燃料过滤器6是壳体11内收容过滤元件12而构成的。而且，盖3作为壳体11的一部分，是从盖3吊挂着。壳体11由上壳体的盖3和下壳体13组成，下壳体13是合成树脂材料制成，盖3和下壳体13在交界部14全周被液密封熔接，内部空间设置过滤元件12。
在燃料过滤器6的壳体11内周侧上方设置有作为燃料进口的进料管15，与燃料泵5的输出管连接。
形成壳体11的二个燃料出口中的第1燃料出口的管道16(图4中用点划线表示)，是从下壳体13的下端向上方延伸，与设置在盖3上的输出管10连通。
作为第2燃料出口的回流管18设置在下壳体13的下部并与增压器7连接。
与盖3一体成形的电气连接器8，在燃料箱1外部，与电源及控制装置(未图示)连接。而且，在燃料箱1内，通过未图示的导线与燃料泵5连接，向燃料泵5的电动机供电，并且，通过未图示的导线与燃料液面计8(见图8)连接，传输指示液面高度的电气信号。
下壳体13是由导电性合成树脂制成的，燃料通过过滤元件12时发生的静电通过电气连接器8放出。
这样构成的燃料供给装置，当通过电气连接器8向燃料泵5供电时，燃料泵5便通过过滤器19吸入燃料加压而送向壳体11内周侧上方的进料管15。
燃料在下壳体13和盖3之间的通路20中按箭头A方向流动。在燃料过滤器6内，燃料在壳体11中从上向下游动，在流过过滤元件12中过滤掉中尘埃等。
流过过滤元件12的燃料，从管道16通过输出管10供给于发动机燃料喷射装置的喷射器(未图示)。这时，用增压器7将流向喷射器的燃料供给压力调整成恒定，由于消耗量误差而将过剩的燃料经过增压器7再回流到燃料箱1内。
盖3与下壳体13在边界部14全周被液密封熔接构成，该熔接一般适用热板熔接。热板熔接如图6所示，用加热源的热板30将下壳体13与盖3的熔接端面加热到熔融温度，拿掉热板30，对双方熔接端面之间加压而使之热熔接。
热板熔接的熔接部截面如图7所示，熔融部分的端部受到加压被挤出，形成溢料21。由于接合端面的熔融状态、加压时的按压移动量不同，溢料21的大小、形状产生误差。因此，壳体11的纵向尺寸产生误差。流到相当于燃料流路的部位的溢料21使流路面积变狭，流路阻力增大，而且，燃料流的脉动成为溢料21变形应力，溢料21的薄弱部份有时发生疲劳破坏、脱落。在位于燃料过滤器的过滤元件12上游位置的熔接部的溢料21脱落时，被过滤元件12捕获，但在位于过滤元件12下游位置的熔接部的溢料21脱落时，可能产生因堵塞下游管道而发生的燃料供应不足或者可能发生堵塞设在下游的喷射器的喷嘴部而发生的发动机运转不正常的不良情况。
本发明是为解决所述问题而研究的，其目的是提供一种燃料供给装置，其在抑制热板熔接导致的壳体纵向尺寸误差的同时，使溢料不流到流路中，即使熔接部的溢料万一脱落时，也不会使溢料流出到流路中。
发明的详细说明
本发明的燃料供给装置是，在壳体内形成从燃料泵输出的燃料液的流路，合成树脂制成的上壳体与下壳体的接合端面，通过热熔接形成液密封的壳体，上壳体与下壳体分别设置比接合端面更低的互相相对的抵接肋，对接合端面熔融压接，形成热熔接，使双方的抵接肋抵接。
沿接合端面设置抵接肋，使之介于空隙槽之间，在热熔接完成时空隙槽形成被封闭的储存空间，使热熔接时挤压出的溢料残存在储存空间。
至少在过滤元件下游的流路设置由抵接肋形成的储存空间。
附图的简单说明
图1是本发明实施方式1的燃料供给装置的侧剖视图。
图2是本发明的壳体形成的热板熔接说明图。
图3是本发明的熔接完成部扩大部份剖视图
图4是以往燃料供给装置的侧剖视图。
图5是以往燃料供给装置的俯视图。
图6是外壳形成的热板熔接说明图。
图7是图5的X-Y-Z剖视图。
发明的最佳实施方式
实施方式1
图1是本发明实施方式1的燃料供给装置的侧剖视图，图2是本发明的壳体的热板熔接说明图，图3是本发明熔接完成部的放大部分剖视图。图中1-21、30是与上述以往装置的说明同样。
盖3及下壳体13由合成树脂材料制成。3a是形成壳体11上部的盖3的接合端面，3b是沿着接合端面3a设在比接合端面3a更低位置的抵接肋，3c是设在接合端面3a与抵接肋3b之间的空隙槽。13a是下壳体13的接合端面，下壳体13的接合端面13a与盖3的接合端面3a被熔接接合，成为边界部14。与边界部14垂直的壳体11的隔壁端面是接合端面3a，13a，通过将盖3与下壳体13在接合端面3a，13a进行熔接接合，形成液密封的壳体的壳体及流路。
13b是沿着端面13a设在比接合端面13a更低位置的抵接肋，13c是设在接合端面13a和抵接肋13b之间的空隙槽。盖3和下壳体13的接合端面3a、13a、以及抵接肋3b、13b分别对向设置。
盖3与下壳体13的热板熔接如图2所示，盖3的接合端面3a和下壳体13的接合端面13a之间插入是加热源的热板30，将双方接合端面加热到熔融温度，去掉加热板30，对接合端面相互之间加压熔接成液密封。这时，双方抵接肋3b、13b因处于比接合端面3a、13a更低的位置，没有达到熔融软化温度，所以，即使加压也不变形。
因此，抵接肋3b、13b在双方抵接后，边界部变形停止，所以壳体11完成的纵向尺寸稳定。
如图3所示，盖3与下壳体13熔接时，由双方空隙槽3c、13c形成储存空间22。这时，盖3和下壳体13的接合端面之间因加压变形发生的溢料21可积存在储存空间22内。从而，在有液流一侧形成储存空间22，可以防止溢料21挤出使流路面积变狭以及抑制液流脉动导致的溢料脱落，假定溢料21脱落，也留在储存空间22内，不会流出到下游，可以防止下游管道堵塞。
接合端面的周环设置空隙槽3c、13c及抵接肋3b、13b则最好，但该燃料供给装置的截面积变大，影响装置小型化。因此，也可在溢料21的无影响的部分分散配置热熔接后尺寸稳定的抵接肋3b、13b。仅在溢料脱落不影响燃料系统的部分形成储存空间22，其他部分作成与以往例子的熔接结构也可以，由于燃料泵5的驱动燃料液的供给动作与以往装置同样，故说明省略。
工业上利用的可能性
本发明如上说明那样，沿着盖3的接合端面3a和下壳体13的接合端面13a在比接合端面3a、接合端面13a更低的位置设置抵接肋3b、13b使之介于空隙槽3c、13c之间，故在对双方接合端面加热使接合端面相互间加压、熔接时，在抵接肋3b、13b抵接位置，接合端面变形停止，壳体11完成的纵向尺寸稳定。
熔接完成时在流路侧形成的空间22，可储存加压变形所发生的溢料21，防止流路面积狭隘化，抑制液流脉动导致的溢料21脱落，而脱落的溢料21储存在储存空间22内，防止下游管道堵塞。

Claims (3)

1.一种燃料供给装置，燃料泵及壳体一起一体地沉没在燃料箱内，所述燃料泵输送的燃料液的流路形成在所述壳体内，其特征在于，
所述壳体是，对合成树脂制成的上壳体和下壳体的接合端面用热熔接方式形成液密封，所述上壳体和下壳体分别设置比接合端面更低的互相相对的抵接肋，对接合端面熔融压接，形成热熔接，使双方抵接肋抵接。
2.如权利要求1所述的燃料供给装置，其特征是，沿接合端面设置抵接肋，使之介于空隙槽之间，在热熔接合完成时，由所述抵接肋封闭的空隙槽形成储存空间，使热熔接时挤出的溢料储存在所述储存空间内。
3.如权利要求2所述的燃料供给装置，其特征是，至少在相当于过滤元件下游的流路部分设置由抵接肋形成的储存空间。
CNB008143552A 2000-08-18 2000-08-18 燃料供给装置 Expired - Fee Related CN1215256C (zh)

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WO2002016752A1 (en) 2002-02-28
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