CN101146992B - 输送单元 - Google Patents

输送单元 Download PDF

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CN101146992B
CN101146992B CN2006800092295A CN200680009229A CN101146992B CN 101146992 B CN101146992 B CN 101146992B CN 2006800092295 A CN2006800092295 A CN 2006800092295A CN 200680009229 A CN200680009229 A CN 200680009229A CN 101146992 B CN101146992 B CN 101146992B
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deflector
supply unit
mixing tube
jet pump
swirling flow
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CN101146992A (zh
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克劳斯·马克夫卡
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Vitesco Automotive Wuhu Co Ltd
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Continental Automotive GmbH
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/04Feeding by means of driven pumps
    • F02M37/08Feeding by means of driven pumps electrically driven
    • F02M37/10Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00Apparatus 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
    • F02M37/02Feeding by means of suction apparatus, e.g. by air flow through carburettors
    • F02M37/025Feeding by means of a liquid fuel-driven jet pump
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/85978With pump
    • Y10T137/86075And jet-aspiration type pump
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86187Plural tanks or compartments connected for serial flow
    • Y10T137/86212Plural compartments formed by baffles
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00Fluid handling
    • Y10T137/8593Systems
    • Y10T137/86348Tank with internally extending flow guide, pipe or conduit

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

本发明涉及一种输送单元(4),其具有:防漩流箱(5)、在该防漩流箱(5)中设置的燃油泵(6)、以及用于将燃油输送至该防漩流箱(5)的吸式喷射泵(8),其中吸式喷射泵(8)由具有喷嘴口的工作射流喷嘴(13)、混合管(14)、吸入口、以及在该吸入口上设置的吸入管道(11)组成,并且折流件(16)设置在所述混合管(14)的下游。

Description

输送单元
技术领域
本发明涉及一种输送单元,其具有:防漩流箱、在该防漩流箱中设置的燃油泵、以及用于输送至防漩流箱的吸式喷射泵吸式,其中吸式喷射泵由具有喷嘴口的工作射流喷嘴、混合管、吸入口、以及在该吸入口上连接的吸入管道组成。该吸式喷射泵用于将燃油从燃油箱输送至设置在燃油箱内部的防漩流箱中。
背景技术
已知,燃油箱具有多种形式。由于燃油箱在机动车上要通过现有的结构空间来进行调整,从而形成为分成多个腔室的燃油箱。
这些腔大部分地与鞍形件连接。在这种燃油箱中存在的问题在于,燃油在低液位时不能再从一个腔室流过鞍形件进入另一个腔室中。因为通常在燃油箱中仅设置一个输送单元,以至于处于另一个腔室中的燃油不能到达输送单元。在这种情况下,会使用到吸式喷射泵,以便将处于燃油箱其他区域中的燃油输送至输送单元或者至少将燃油输送至腔室或者输送单元所处的区域中。
传统的吸式喷射泵设置在腔室的底部或者燃油箱区域的底部,从该腔室或者区域中将燃油输送至输送单元。由于吸式喷射泵的吸入口设置在燃油箱的底部,因此吸式喷射泵总是处于燃油中,进而总是可以投入使用。这种吸式喷射泵表现出良好的效率。输送系数(也就是总射流与工作射流的比率)至少为7。在此的缺点是,由于存在通向吸式喷射泵的工作介质管道和来自吸式喷射泵的总管道,就要求在燃油箱中必须设置和固定两条管道。
此外已知,使用设置在输送单元区域中的抽吸用吸式喷射泵,吸入管道从吸式喷射泵通入要输送出燃油的区域。为了在吸入管道中产生必要的低压,吸式喷射泵具有专用的工作射流喷嘴。该工作射流喷嘴的出口孔被设计成狭缝。由于该狭缝,工作射流在从工作射流喷嘴中出来后呈扇形散开。该呈扇形散开的工作射流封闭该混合管,结果是产生必要的真空,使得燃油可经过相对较长的吸入管道被吸入。因此,仅需要在燃油箱中只设置并固定一条管道,以代替当前使用的两条管道。这种实施方式的缺点在于抽吸用吸式喷射泵的输送系数较低,该输送系数约为2。这种较低的输送系数是由于工作射流在离开工作射流喷嘴后呈扇形散开造成的。
此外已知一种吸式喷射泵,该吸式喷射泵利用混合管的出口端部设置在罐中,从而处于罐中的输送介质相对于大气密封混合管端部。通过液封,在混合管入口处产生低压,该低压有助于改善吸收能力。但已经表明,在确定的情况下,未达到吸入功率(Saugleistung),由此可以推断出,不能始终确保混合管出口的液封。这例如由在罐中存在非常少量的被输送的液体引起。
发明内容
本发明的目的在于,提供一种具有改善的输送系数的吸入式吸式喷射泵,其中即使在不利情况下也可以确保吸入功率。此外,吸式喷射泵应该简单和紧凑地构造和易于安装。
根据本发明,如此实现该目的,即在混合管的下游设置有折流件。
通过在混合管的下游设置的折流件,以高速从混合管射出的输送介质被分开并且围绕混合管的排出口的区域产生涡流。介质的涡流确保了对混合管的排出口的稳定且可靠的液封,从而可以在吸式喷射泵中形成足够的低压,该低压使通过远的距离吸入待输送介质得以实现。
在一个有利的设计方案中,折流件的朝向混合管的表面凹形地构成或者设计为槽。这种构造可以以较低的复杂度生产进而是成本特别低廉的。
一种同样廉价生产的折流件结构在折流件的朝向混合管的表面上具有肋条。在此,当折流件借助注塑法生产时,该肋条可以一体地模制在折流件上。
当该表面或者肋条设置在混合管的排出口区域中时,可以减少用于生产凹形表面或者肋条的费用。
此外,当折流件借助卡锁-及插塞连接件(Rast-undSteckverbindung)与吸式喷射泵连接时,可以廉价地生产该折流件。在此,不仅可以实现与混合管的连接而且也可以实现与吸式喷射泵的壳体的连接。
根据本发明另一个有利的设计方案,当折流件与吸式喷射泵一体连接时,可以避免折流件与吸式喷射泵的安装。在最简单的情况下,该连接设计为至少一个连接体,该连接体从混合管延伸至折流件。折流件和吸式喷射泵以这种方式形成一个单元。由此,该吸式喷射泵可以安装在任意的位置处。
如果吸式喷射泵应用于充注防漩流箱,该吸式喷射泵可以通过上部边缘通至防漩流箱中,其中该吸式喷射泵设置在上部边缘的区域中。在此,输送单元有利的设计方案的优点在于,折流件设置在输送单元的其他部件上,特别是防漩流箱、燃油泵、过滤器或者压力调节器上。
在此,该折流件在输送单元的部件上的布置可以借助卡锁-及插塞连接件、借助粘接或者焊接、或者通过在部件上一体构成(例如通过在防漩流箱上喷射模塑)来实现。
附图说明
根据多个实施例详细描述本发明。其中,附图示出了:
图1是在燃油箱中的吸式喷射泵的示意性设置方案,
图2a、2b是根据图1的具有折流件的吸式喷射泵的放大图,
图3是具有折流件的吸式喷射泵的混合管的截面图,
图4是具有折流件的混合管的示意性示意图,
图5是具有折流件的输送单元的防漩流箱。
具体实施方式
在图1中示出了由两个腔室2、3构成的燃油箱1。在燃油箱1中固定了输送单元4,该输送单元由防漩流箱5和设置在该防漩流箱内的燃油泵6构成。通过供给管道7将由燃油泵6输送的燃油输送给内燃机(未示出)。在防漩流箱5的内壁上设置吸式喷射泵8,其中其混合管9伸入该防漩流箱中。燃油通过管道10从燃油泵6输送至吸式喷射泵8。另一管道11从吸式喷射泵8延伸至另一腔室2。燃油通过管道11从腔室2直接输送至防漩流箱5。折流件16设置在吸式喷射泵8的下游。
吸式喷射泵8(图2a中示出)由工作射流喷嘴13、具有排出口15的混合管14和吸入管道11构成。在排出口15的区域中设置折流件16。该折流件的朝向排出口15的表面17构成凹形,从而从混合管14喷出的射流通过凹形的表面17产生涡流并且导致对混合管14的液封。由于该液封,在吸式喷射泵8中形成足够的低压,利用该低压,燃油通过吸入管道11从燃油箱中输出。
在折流件16方面,在图2b中示出的吸式喷射泵8不同于根据图2a的燃油泵。肋条18一体地模制在折流件16上,利用该肋条可以产生如利用凹形的表面同样的效果。
根据图3,吸式喷射泵8的混合管14具有外部设置的、环形的槽19。在该槽19中设置夹具20,该夹具过渡(übergehen)为桥接体21。具有槽22的折流件16一体地模制在连接体21上。具有折流件16的夹具20作为简单构成的模制件借助注塑法特别廉价地生产。
根据图4,折流件16与吸式喷射泵8一体制成,其方式是,该折流件通过连接体23与混合管14的排出口15连接。
图5示出了输送单元的另一个实施例,在该输送单元中,吸式喷射泵8固定在防漩流箱5的盖24上。借助工作射流管道10,工作射流从燃油泵(未示出)输送至吸式喷射泵8。在工作射流管道中的止回阀相对于空程来密封该工作射流管道。在工作射流喷嘴13的区域中吸入管道通至吸式喷射泵8。工作射流通过工作射流喷嘴13流出并且流入混合管14。工作射流在离开混合管14后撞到槽22上,因此该射流产生涡流并且密封该排出口15。该槽22是折流件16的一部分,该折流件焊接在防漩流箱5的内壁上。但折流件16也可以与防漩流箱5夹在一起,特别是悬挂在防漩流箱5的上部边缘或者设置在盖24上。基于由折流件形成的对混合管14的液封,工作射流产生了明显较大的低压,另一方面该低压是足够的,以便借助吸入管道11通过一个相对大的距离将较大量的燃油输送到防漩流箱5中。

Claims (9)

1.一种输送单元,布置在由两个腔室(2,3)构成的燃油箱的一个腔室中,所述输送单元具有:防漩流箱、在所述防漩流箱中设置的燃油泵以及用于将燃油输送至所述防漩流箱的吸式喷射泵,其中所述吸式喷射泵由具有喷嘴口的工作射流喷嘴、混合管、吸入口、以及在所述吸入口上设置的吸入管道组成,其中所述吸入管道(11)从所述吸式喷射泵(8)延伸至燃油箱的另一腔室中,其特征在于,在所述混合管(14)的下游设置有折流件(16),其中,所述燃油泵通过所述吸入管道(11)抽吸所述另一腔室中的燃油并且所述折流件(16)用于使从所述混合管(14)喷出的射流产生涡流来在所述混合管的排出口处产生液封。
2.根据权利要求1所述的输送单元,其特征在于,所述折流件(16)的面向所述混合管(14)的表面(17)构成凹形。
3.根据权利要求1所述的输送单元,其特征在于,所述折流件(16)的面向所述混合管(14)的表面具有肋条(18)。
4.根据权利要求3所述的输送单元,其特征在于,所述肋条(18)一体地模制在所述折流件(16)上。
5.根据前述权利要求中任一项所述的输送单元,其特征在于,所述折流件(16)通过卡锁-及插塞连接件(19、20)与所述吸式喷射泵(8)连接。
6.根据权利要求1至4中任一项所述的输送单元,其特征在于,所述折流件(16)通过至少一个连接体(23)一体地与所述吸式喷射泵(8)连接。
7.根据权利要求1至4中任一项所述的输送单元,其特征在于,所述折流件(16)设置在所述防漩流箱(5)或者所述燃油泵(6)上。
8.根据权利要求7所述的输送单元,其特征在于,所述折流件(16)一体地模制在所述防漩流箱(5)或者所述燃油泵(6)上。
9.根据权利要求7所述的输送单元,其特征在于,所述折流件(16)借助卡锁-及插塞连接件固定在所述防漩流箱(5)或者所述燃油泵(6)上。
CN2006800092295A 2005-03-24 2006-01-11 输送单元 Active CN101146992B (zh)

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WO2011125851A1 (ja) * 2010-03-31 2011-10-13 本田技研工業株式会社 燃料タンクシステム
EP3403864B1 (en) 2017-05-18 2020-01-08 Ningbo Geely Automobile Research & Development Co., Ltd. A fuel ejector assembly for a vehicle
JP7267152B2 (ja) * 2019-08-29 2023-05-01 愛三工業株式会社 燃料供給装置

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US8387658B2 (en) 2013-03-05
DE502006006792D1 (de) 2010-06-02
US20080190495A1 (en) 2008-08-14
DE102005014287B4 (de) 2007-01-25
WO2006100130A1 (de) 2006-09-28
DE102005014287A1 (de) 2006-10-05
CN101146992A (zh) 2008-03-19
EP1861612B1 (de) 2010-04-21

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