CN105142951A - 具有可气动排空的液体分离器的燃料容器 - Google Patents
具有可气动排空的液体分离器的燃料容器 Download PDFInfo
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- F02M2025/0863—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding fuel vapours drawn from engine fuel reservoir with means dealing with condensed fuel or water, e.g. having a liquid trap
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Abstract
本发明涉及一种燃料容器,特别是用于机动车的燃料容器,其包括:用于在给容器加注燃料时和在由燃料驱动的做功机械运行中消耗燃料时平衡气体内压的通风及排气装置,其中,该通风及排气装置具有从通风及排气管道中分离液态燃料的分离设备(12)。为了即使在正常运行中为此所用的燃料泵不运转时也能够排空分离设备(12),根据本发明提出:所述分离设备(12)具有壳体(14)和直接或者经由管道与壳体连接的管接头(16),在所述管接头内由于燃料流入和流出而出现压力波动,该压力波动能够以泵的方式用于排空分离设备(12)。
Description
技术领域
本发明涉及一种燃料容器,特别是用于机动车的燃料容器,其包括用于在给容器加注燃料时和在由燃料驱动的做功机械运行中消耗燃料时平衡气体内压的通风及排气装置,其中,该通风及排气装置具有从通风及排气管道中分离液态燃料的分离设备。此外,本发明还涉及一种用于排空燃料容器的通风及排气装置的分离设备的方法。
背景技术
在给燃料容器加注燃料时需要排气,以便将受到流入之燃料排挤的气体体积从容器中导出。同样,当燃料容量减少时需要给容器通风,以避免在容器内产生负压,该负压例如可能导致容器损坏(塌陷)。同时需要防止燃料蒸汽-通常为碳氢化合物蒸汽-排出到大气中。为此目的,已知的通风及排气装置具有一活性炭过滤器,该活性炭过滤器可以吸收碳氢化合物蒸汽并在一定时间间隔内通过将吸收的蒸汽供应到动力机械/发动机的进气系统(Einlasstrackt)中回收利用。在此重要的是:应防止液态燃料进入活性炭过滤器中,因为该活性炭过滤器将由此而受到损害。因此,在燃料容器的内部,有时也在其外部,通常设置一个用于液态燃料的分离设备,该分离设备保证:只能将燃料蒸汽传输至活性炭过滤器。在发动机运行中例如借助燃料泵来排空分离设备。然而,在可以部分地纯电动驱动的混合动力车中,燃料泵在电动运行模式中并不运转。但由于晃荡运动等等,液态燃料仍会进入通风及排气装置中以及因此进入分离设备中并将其淹漫,从而产生液态燃料污染活性炭过滤器的危险。因为即便在电动运行模式中也必须保持排气功能,所以,例如就简单地借助截止阀将分离设备与活性炭过滤器分隔开来并不是符合目的的。
发明内容
由此出发,本发明的目的是:如下地改进文首述及类型的燃料容器,即能够实现在大多数情况下有效地排空分离设备。
为实现上述目的而提出了在权利要求1中描述的特征组合。由从属权利要求可得知本发明的一些有益构造和发展设计。
本发明首先以下述认识为出发点:燃料容器内含有的燃料在行驶运行中或多或少地经受剧烈的晃荡运动。其内所包含的动能可以被用于实施对分离设备的所期望的排空。这可以直接以机械方式进行转换,或者从“energyharvesting”(能量回收)的意义上说通过一个或多个能量转换级,例如通过驱动发电机,该发电机则又驱动一个泵。出于成本和可靠性的原因,应该优选采取尽可能简单的构造设计。因此根据本发明提出:分离设备具有壳体和直接或者经由管道与壳体连接的管接头,在所述管接头内由于燃料流入和流出而出现压力波动,该压力波动能够以泵的方式用于排空分离设备。管接头以一个向下开放的横截面这样地设置在容器内,即,它在液态燃料可能流入分离设备中和需要排空该分离设备的情况下含有一气体体积,该气体体积在燃料流入管接头时受到排挤以及在燃料流出时产生负压,该负压通过抽吸力效应将液态燃料从分离设备中除去。通过在车辆运行中燃料的所述及的晃荡运动,而实现液态燃料向管接头的内部区域中流入和从其流出。
所述通风及排气装置适宜具有两个阀门,其中的第一阀门在液态燃料流入管接头时可以使气体从该管接头中逸出并且在液态燃料从管接头中流出时防止气体在相同的路径上回流,也就是说,该第一阀门在燃料流入管接头时打开,而在燃料从管接头中流出时关闭。优选该第一阀门构造成盘形阀。该第一阀门适宜设置在管接头的壁中或者设置将管接头与分离设备的壳体连接的管道的壁中。
第二阀门与第一阀门以相反的节奏打开和关闭,也就是说,它在燃料流入管接头时关闭,而在燃料从管接头中流出时打开。第二阀门同样优选构造成盘形阀。第二阀门在流动技术上是设置在分离设备的内腔(需除去的液态燃料积聚在该内腔中)和管接头的内腔之间。例如,第二阀门设置在分离设备的壳体的壁中并位于壳体的内部区域和管接头或者将管接头与分离设备的壳体连接的管道之间。
通过两个阀门的互相配合和由晃荡运动所产生的压力波动,得到了一种简单的气动的泵,该泵能够实现与(电动)燃料泵的运行无关地排空分离设备。
管接头可以直接连接于分离设备的壳体上,或者通过一根连接导管与该壳体连接。在个别情况中这一点取决于燃料容器的造型设计、分离设备在燃料容器中的设置位置和可能的其他准则。
本发明的用于将通风及排气装置的设置在燃料容器中的分离设备排空的方法的特征在于:通过使位于燃料容器中的燃料的、形式上为晃荡运动的动能直接或间接地作用在分离设备的阀门系统上,将该动能用于做机械功。
在本发明的优选设计中,燃料的晃荡运动在相对容器内腔分隔开的、具有用于燃料的入口的体积中产生气动的泵效应。作为可选方案,燃料的晃荡运动例如可以用来驱动一台发电机用于运行电动的辅泵或类似装置。
附图说明
下文将参照在附图中以示意性方式示出的实施例详细地阐述本发明。附图中:
图1a和b示出本发明原理的示意图;和
图2a和b示出燃料容器在分离设备的区域内的剖视图,该分离设备具有一个管接头和两个用于通过燃料晃荡运动产生泵效应的阀门。
具体实施方式
在图1a和b的略图中示出了本发明的工作原理。在燃料容器10的内部,作为用于容器的通风及排气装置的组成部分设置有一个用于液态燃料的分离设备12,其具有一个壳体14和一个连接于该壳体14上的、向着燃料容器底部开放的管接头16。在管接头16的上部区域中,在其璧内设置有第一阀门18,该第一阀门朝向管接头16的外部区域打开。在壳体14的下部壁中(在此处,该壳体向上限定管接头16的边界)设置有第二阀门20,该第二阀门朝向管接头16的内腔打开。
管接头16以其下部区域浸入液态燃料中,或者说,液态燃料在晃荡运动时可以流入向下开放的管接头中。在管接头16内的液位22上升时,该管接头中现存的气体体积便受到压缩。由此沿着打开方向操作第一阀门18并且气体可以沿箭头24的方向逸出。如果管接头16中的液位22后来又重新下降,那么第一阀门18便气密地关闭并且在管接头16的内腔中出现减压,特别是相对于壳体14的内腔。通过在壳体14内腔与管接头16内腔之间的压差,沿着打开方向操作第二阀门20,使得壳体14内现存的液态燃料能够通过第二阀门20沿箭头26的方向流入管接头16中。上述工作循环以液态燃料的晃荡运动的节律重复,从而对分离设备12实施相应节奏的排空。
在图2a和b中示出了本发明一种实施例的剖视图。除了燃料系统的一系列其他未详示的部件(燃料泵、过滤器、部件支架等)之外,在容器10内设置有一个通风及排气装置,该通风及排气装置具有带有壳体14和管接头16以及阀门18和20的分离设备12。分离设备的壳体14通过管道28与一个通风及排气阀30连接。另一管道以未详示的方式从分离设备通向一个活性炭过滤器,该活性炭过滤器从排气气体中除去有害的燃料成分并使尽可能纯净的空气排放到大气中。
管接头16不是必须与壳体14直接连接。其实,壳体14和管接头16根据需要可以设置在容器10中的不同位置并且通过一根连接导管相互连接。在此示出为罐状的管接头6造型设计同样也可有所变化和适配于相应的条件和要求,只要在燃料流入和流出时泵效应的基本功能在如下程度范围内持续得到保证:防止液体燃料淹漫通风及排气装置。
概括地总结如下:本发明设计一种燃料容器,特别是用于机动车的燃料容器,其具有用于在给容器加注燃料时和在由燃料驱动的做功机械运行中消耗燃料时平衡气体内压的通风及排气装置,其中,该通风及排气装置具有从通风及排气管道中分离液态燃料的分离设备。为了即使在正常运行中为此所用的燃料泵不运转时也能够排空分离设备12,根据本发明提出:分离设备12具有壳体14和直接或者经由管道与壳体连接的管接头16,在所述管接头内由于燃料流入和流出而出现压力波动,该压力波动能够以泵的方式被用来排空分离设备。
Claims (10)
1.燃料容器,特别是用于机动车的燃料容器,其包括:用于在给容器(10)加注燃料时和在由燃料驱动的做功机械运行中消耗燃料时平衡气体内压的通风及排气装置,其中,该通风及排气装置具有用于从通风及排气管道(28)中分离液态燃料的分离设备(12),其特征在于:所述分离设备(12)具有壳体(14)和直接或者经由管道与该壳体连接的管接头(16),在所述管接头内由于燃料流入和流出而出现压力波动,该压力波动能够以泵的方式用于排空所述分离设备(12)。
2.如权利要求1所述的燃料容器,其特征在于:所述分离设备(12)具有第一阀门(18),该第一阀门在燃料流入所述管接头(16)时打开而在燃料从所述管接头中流出时关闭。
3.如权利要求2所述的燃料容器,其特征在于:所述第一阀门(18)构造成盘形阀。
4.如权利要求2或3所述的燃料容器,其特征在于:所述第一阀门(18)设置在所述管接头(16)的壁中或者设置在将所述管接头与所述分离设备(12)的壳体(14)连接的管道的壁中。
5.如权利要求2至4之任一项所述的燃料容器,其特征在于:所述分离设备(12)具有第二阀门(20),该第二阀门在燃料流入所述管接头(16)时关闭而在燃料从所述管接头中流出时打开。
6.如权利要求4所述的燃料容器,其特征在于:所述第二阀门(20)构造成盘形阀。
7.如权利要求5或6所述的燃料容器,其特征在于:所述第二阀门(20)设置在所述分离设备(12)的壳体(14)的壁中并位于该壳体的内部区域和所述管接头(16)或者将所述管接头与所述分离设备的壳体连接的管道之间。
8.如权利要求1至7之任一项所述的燃料容器,其特征在于:所述分离设备(12)通过连接导管(28)与活性炭过滤器连接,该活性炭过滤器防止燃料蒸汽排出到大气中。
9.用于将通风及排气装置的设置在燃料容器中的分离设备(12)排空的方法,其特征在于:通过使位于燃料容器(10)中的燃料的、形式上为晃荡运动的动能直接或间接地作用在所述分离设备(12)的阀门系统(18,20)上,将该动能用于做机械功。
10.如权利要求9所述的方法,其特征在于:燃料的晃荡运动在相对容器内腔分隔开的、具有用于燃料的入口的体积中产生气动的泵效应。
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DE102013203994.8 | 2013-03-08 | ||
DE102013203994.8A DE102013203994A1 (de) | 2013-03-08 | 2013-03-08 | Kraftstoffbehälter mit pneumatisch entleerbarem Flüssigkeitsabscheider |
PCT/EP2014/054387 WO2014135658A1 (de) | 2013-03-08 | 2014-03-06 | Kraftstoffbehälter mit pneumatisch entleerbarem flüssigkeitsabscheider |
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CN105142951A true CN105142951A (zh) | 2015-12-09 |
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US (1) | US9878612B2 (zh) |
EP (1) | EP2964478B1 (zh) |
JP (1) | JP6484566B2 (zh) |
KR (1) | KR102079842B1 (zh) |
CN (1) | CN105142951B (zh) |
BR (1) | BR112015021584B1 (zh) |
DE (1) | DE102013203994A1 (zh) |
RU (1) | RU2015142678A (zh) |
WO (1) | WO2014135658A1 (zh) |
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US6557581B2 (en) * | 2001-03-01 | 2003-05-06 | Raviv Precision Injection Molding | Liquid fuel trap |
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- 2013-03-08 DE DE102013203994.8A patent/DE102013203994A1/de not_active Withdrawn
-
2014
- 2014-03-06 EP EP14708539.3A patent/EP2964478B1/de not_active Not-in-force
- 2014-03-06 US US14/773,591 patent/US9878612B2/en active Active
- 2014-03-06 RU RU2015142678A patent/RU2015142678A/ru not_active Application Discontinuation
- 2014-03-06 KR KR1020157025697A patent/KR102079842B1/ko active IP Right Grant
- 2014-03-06 CN CN201480021353.8A patent/CN105142951B/zh not_active Expired - Fee Related
- 2014-03-06 BR BR112015021584-0A patent/BR112015021584B1/pt not_active IP Right Cessation
- 2014-03-06 JP JP2015560697A patent/JP6484566B2/ja not_active Expired - Fee Related
- 2014-03-06 WO PCT/EP2014/054387 patent/WO2014135658A1/de active Application Filing
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US5408977A (en) * | 1993-08-23 | 1995-04-25 | Walbro Corporation | Fuel tank with carbon canister and shut-off valve |
US5722468A (en) * | 1995-04-05 | 1998-03-03 | Toyota Jidosha Kabushiki Kaisha | Evaporative-fuel emission preventing apparatus |
KR100242204B1 (ko) * | 1997-07-21 | 2000-03-02 | 정몽규 | 차량용 연료장치의 증발가스 제어 시스템 |
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CN1774351A (zh) * | 2003-04-15 | 2006-05-17 | 拉法尔A.C.S.有限公司 | 动态液体燃料收集器 |
CN102529699A (zh) * | 2010-12-21 | 2012-07-04 | 奥迪股份公司 | 燃料系统 |
Also Published As
Publication number | Publication date |
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US20160023549A1 (en) | 2016-01-28 |
KR20150128734A (ko) | 2015-11-18 |
RU2015142678A (ru) | 2017-04-13 |
DE102013203994A1 (de) | 2014-09-11 |
CN105142951B (zh) | 2018-09-04 |
BR112015021584A2 (pt) | 2017-07-18 |
KR102079842B1 (ko) | 2020-02-20 |
WO2014135658A1 (de) | 2014-09-12 |
EP2964478B1 (de) | 2017-05-03 |
BR112015021584B1 (pt) | 2022-06-07 |
JP2016510705A (ja) | 2016-04-11 |
EP2964478A1 (de) | 2016-01-13 |
JP6484566B2 (ja) | 2019-03-13 |
US9878612B2 (en) | 2018-01-30 |
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