CN1396984A - 带一个燃油滤清器的内燃机的燃油供给装置 - Google Patents

带一个燃油滤清器的内燃机的燃油供给装置 Download PDF

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CN1396984A
CN1396984A CN01804462A CN01804462A CN1396984A CN 1396984 A CN1396984 A CN 1396984A CN 01804462 A CN01804462 A CN 01804462A CN 01804462 A CN01804462 A CN 01804462A CN 1396984 A CN1396984 A CN 1396984A
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locking member
fuel
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container
fuel tank
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CN100402829C (zh
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H·-P·布劳恩
S·维尔茨
T·维兰德
C·阿斯特
E·弗拉尼克
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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
    • 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
    • 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
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J13/00—Covers or similar closure members for pressure vessels in general
    • F16J13/24—Covers or similar closure members for pressure vessels in general with safety devices, e.g. to prevent opening prior to pressure release
    • 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
    • B01D35/0276—Filtering elements with a vertical rotation or symmetry axis mounted on 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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/147—Bypass or safety 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
    • 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
    • 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
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • 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
    • F02M37/42—Installation or removal of filters
    • 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
    • F02M37/46—Filters structurally associated with pressure regulators
    • 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
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/304—Seals or gaskets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/40—Special measures for connecting different parts of the filter
    • B01D2201/4015—Bayonet connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K15/03504—Fuel tanks characterised by venting means adapted to avoid loss of fuel or fuel vapour, e.g. with vapour recovery systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/03447—Arrangements or special measures related to fuel tanks or fuel handling for improving the sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/035—Fuel tanks characterised by venting means
    • B60K2015/03542—Mounting of the venting means
    • B60K2015/03557—Mounting of the venting means comprising elements of the venting device integrated in the fuel tank, e.g. vapor recovery means
    • 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
    • F02M37/02—Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025—Feeding by means of a liquid fuel-driven jet pump

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  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
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Abstract

本发明涉及一种内燃机的燃油供给装置，该装置具有一个封闭一个油箱(12)的一个孔(18)的锁紧部件(20)，该锁紧部件具有一个朝油箱(12)外侧开口的罐形容器(22)，在该容器中装入了一个燃油滤清器(24)，该容器用一个可拆卸地固定在锁紧部件(20)上的盖件(36)锁紧。在锁紧部件(20)和盖件(36)之间嵌入一个弹性密封圈(46)，通过该密封圈实现容器(22)的密封。在密封圈(46)的范围内，锁紧部件(20)具有至少一个连通容器(22)与油箱(12)内部的孔(52)。在盖件(36)固定在锁紧部件(20)上时，密封圈(46)从一个不变形的基本形状开始这样弹性变形，即该密封圈密封该至少一个孔(52)。而在从锁紧部件(20)松开盖件(36)时，密封圈(46)则恢复到其基本形状，在这个基本形状内，该密封圈不覆盖该至少一个孔(52)。从而在松开盖件(36)时，实现了油箱(10)内部的压力下降。

Description

带一个燃油滤清器的内燃机的燃油供给装置
技术背景
本发明涉及权利要求1所述类的一种带有一个燃油滤清器的内燃机的燃油供给装置。
技术领域
EP 0 612 919 A1公开了这样的装置。该装置具有一个锁紧油箱的孔的锁紧部件，该锁紧部件具有一个罐形的容器，在该容器中装入一个燃油滤清器。该容器可从油箱的外侧用一个可拆卸地固定在该锁紧部件上的盖件锁紧。在该盖件和锁紧部件之间嵌入一个弹性密封圈，通过该密封圈密封该容器。通过压力作用下的供油装置输送到内燃机的燃油流过该燃油滤清器。其中，即使在供油装置不工作时，一般也应保持供油系统内的压力，而且燃油滤清器的容器内也应保持这个压力。在从该锁紧元件上松开该盖进行燃油滤清器的更换时，在压力作用下的燃油就可能喷出，从而危及进行更换滤清器的人员并引起燃烧危险。
发明内容
具有权利要求1特征部分的本发明燃油供给装置的优点是，在松开该锁紧部件的盖件时，通过该密封圈打开该容器的至少一个与油箱内部连通的孔，从而在油箱中产生压力下降，所以没有压力作用下的燃油从该容器向外喷出。因此对更换滤清器的人员不构成危险，也不存在燃烧危险。
本发明装置的诸多有利结构和改进可从各项从属权利要求中得知。
附图说明
在附图中示出本发明的一个实施例并在下面的说明中详细进行说明。
图1表示内燃机燃油供给装置的示意图；
图2表示沿图1的箭头II看去的该装置的部分截面。
图3表示在锁紧盖件的情况下，图1用III标出的放大图；和
图4表示在松开盖件的情况下的同一放大图。
具体实施例方式
图1至4表示车用内燃机10的一个燃油供给装置。内燃机10具有一个喷油装置，通过它把燃油喷入内燃机的气缸。汽车具有一个油箱12，在该油箱中设置了一个围挡容器14。在围挡容器14中设置了一个供油装置16，该供油装置包括一个形式为一台电动机和一个泵的传动部分。通过供油装置16在运行时从围挡容器14吸走燃油并在压力作用下输送到内燃机10。从油箱12用一台喷射泵17把燃油供入围挡容器14中。
油箱12具有一个孔18，围挡容器14通过该孔可放入该油箱中。孔18用一个在图中未详细示出的、固定在油箱12上的法兰状的锁紧部件20密封锁紧。在锁紧部件20上构成了一个用于燃油滤清器24的指向油箱12内部的罐形容器22。容器22朝油箱12的外侧方向开口。燃油滤清器24从油箱12的外侧插入容器22。燃油滤清器24在其下端区和上端区分别具有一个可弹性变形的法兰26。当燃油滤清器24插入容器22中时，其法兰26在预应力作用下沿径向方向紧贴在容器22的圆周壁上和底23上并使该处密封。
在指向油箱12内部的锁紧部件20的一侧设置了一个管接头28，该管接头与容器22连通。在管接头28上插入了一根液压管30，该液压管与供油装置16的出口连接。由供油装置16输送的燃油通过管30和管接头28到达燃油滤清器24的污染侧，该污染侧在容器22的圆周和圆周壁之间构成。燃油径向向内流过燃油滤清器24到达其净化侧。通过燃油滤清器24的法兰26实现净化侧和污染侧之间的密封。在容器22的底23上可设置一个安全阀32，在燃油滤清器24的污染侧超过规定压力时，该安全阀打开，燃油便可流入油箱12中。锁紧部件20最好用塑料并通过注塑制成，所以容器22和管接头28可按简单的方式在该锁紧部件上整体构成。
容器22可用一个盖件36锁紧，该盖件可拆卸地固定在锁紧部件20上。盖件36例如可用一个卡口接头38固定在锁紧部件20上。卡口接头38可作为插入式卡口构成，其中在盖件36的整个圆周上分布许多插接钩40，在图1和图2中只示出了其中的一个插接钩。在锁紧部件20上构成一个法兰21，该法兰在其内缘上设置若干径向槽42，槽的数目和分布与插接钩40一致，并沿圆周方向在这些槽的旁边在锁紧部件20面向法兰21内侧的位置构成若干斜面44。在盖件36的固定中，将该盖件沿容器22的纵轴25的方向安装到锁紧部件20上，在一个旋转位置内，该盖件的插接钩40插入槽42中，然后将该盖件36旋入一个锁紧位置，在这个位置内，该盖件的插接钩40滑到斜面44上，这样，盖件36沿纵轴25的方向朝锁紧部件20拉紧。
另一种办法是，盖件36可通过螺纹连接固定在锁紧部件20上。这时锁紧部件20具有一个带外螺纹的台阶，而盖件36则具有一个带内螺纹的台阶，该内螺纹拧到锁紧部件20的外螺纹上。在盖件36进行拧紧时，该盖件沿容器22的纵轴25的方向朝锁紧部件20拉紧。也可用一个带有内螺纹的单独的固定环，该固定环装到盖件36上并拧到锁紧部件20的外螺纹上。
在盖件36上设置了一个从该盖件向外凸起的管接头37，其中，盖件36最好用塑料制成并通过注塑进行，并把管接头37与盖件注成一体。盖件36在预应力作用下紧贴在燃油滤清器24的上法兰26上并由此在燃油滤清器24的净化侧和污染侧之间实现密封。燃油滤清器24的净化侧与管接头37连接，在该管接头上连接了一根通向内燃机10的管，由供油装置16输送的燃油通过该管到达内燃机10。
为了向外密封容器22，在盖件36和锁紧部件20之间嵌入了一个密封圈46。这样，盖件36通过密封圈46紧贴在锁紧部件20上，并在密封圈46内在盖件36和锁紧部件20之间保留一个轴向缝隙47。密封圈46例如可具有一个横截面大致呈圆形的基本形状并用耐油的橡胶或弹性体制成。盖件36在其面向锁紧部件20的一侧具有一个环绕的环形槽48，密封圈46布置在该槽中。锁紧部件20在其面向盖件36的一侧具有一个环绕的环岸50，该环岸对置在盖件36的环形槽48的外侧。锁紧部件20同样设置一个环形槽来代替该环岸50，该环形槽位于盖36的环形槽48对面。锁紧部件20具有至少一个孔52，容器22通过该孔与油箱12的内部连通。该至少一个孔52设置在密封圈46以内并直接靠近该密封圈。
密封圈46布置在锁紧部件20和盖件36之间，在进行盖件36的固定时，该密封圈由于被朝向锁紧部件20作用的运动夹紧开由此产生弹性变形。在图3中示出了盖件36位于其固定在锁紧部件20上的位置和密封圈46处于其弹性变形的状态，在该状态内，该密封圈被压扁，所以相对于其基本形状沿径向方向具有较大的膨胀。在这个弹性变形状态下，密封圈46覆盖了锁紧部件20的至少一个孔52，所以容器22不与油箱12的内部连通。因此，由供油装置16在压力作用下输送的燃油流过燃油滤清器24并通过管接头37流出。
当内燃机10和供油装置16不工作时，也必须保持在供油装置16和内燃机10之间的供油系统内的压力。这样就可实现内燃机10的快速启动。所以在容器22内总是保持一个比大气压力高的过压。燃油滤清器24可能会被流经它的燃油的微粒污染，这种微粒通过燃油滤清器24滤除，因而不可能到达内燃机10，所以，在必要时必须更换燃油滤清器24。更换工作很简单，从锁紧部件20处松开并取下盖件36后，便可从容器22中取出燃油滤清器24并放入一个新的燃油滤清器。
在从锁紧部件20处松开盖件36时，该盖件从锁紧部件20处移开，所以密封圈46恢复到其大致呈圆形的基本形状，这种基本形状的密封圈如图4所示。密封圈46在其基本形状内不能覆盖锁紧部件20的该至少一个孔52，所以该孔畅通和容器22通过缝隙47和该至少一个孔52与油箱12的内部连通。因此，在松开盖件36时，容器22通过该至少一个孔52卸掉油箱12内部的压力，所以在随后取下盖件36时，就不会有压力作用下的燃油从容器22中喷出。

Claims (4)

1.带有一个燃油滤清器的内燃机的燃油供给装置，该装置具有一个锁紧油箱(12)的孔(18)的锁紧部件(20)，该锁紧部件具有一个朝油箱(12)外侧开口的罐形容器(22)，在该罐形容器中安装一个燃油滤清器(24)，该容器(22)可用一个盖件(36)锁紧，该盖件可拆卸地固定在锁紧部件(20)上，并在锁紧部件(20)和盖件(36)之间嵌入一个弹性密封圈(46)，容器(22)通过该密封圈实现密封，其特征为：在密封圈(46)的范围内，锁紧部件(20)具有至少一个连通容器(22)与油箱(12)内部的孔(52)；在盖件(36)固定在锁紧部件(20)上时，密封圈(46)从一个不变形的基本形状开始这样产生弹性变形，即该密封圈封闭该至少一个孔(52)，而在从锁紧部件(20)松开盖件(36)时，密封圈(46)则恢复到其基本形状，在这个基本形状内，该密封圈不覆盖该至少一个孔(52)。
2.按权利要求1的装置，其特征为，盖(36)和/或锁紧部件(20)具有一个环形槽(48)，在该环形槽中布置了一个密封圈(46)。
3.按权利要求1或2的装置，其特征为，盖(36)用一个卡口接头(38)固定在锁紧部件(20)上。
4.按权利要求1至3中任一项的装置，其特征为，容器(22)内装有压力作用的燃油。
CNB01804462XA 2000-12-05 2001-11-30 带一个燃油滤清器的内燃机的燃油供给装置 Expired - Fee Related CN100402829C (zh)

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