JP4000018B2 - Diesel filter - Google Patents

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Publication number
JP4000018B2
JP4000018B2 JP2002193670A JP2002193670A JP4000018B2 JP 4000018 B2 JP4000018 B2 JP 4000018B2 JP 2002193670 A JP2002193670 A JP 2002193670A JP 2002193670 A JP2002193670 A JP 2002193670A JP 4000018 B2 JP4000018 B2 JP 4000018B2
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JP
Japan
Prior art keywords
fuel
water
filter
filtration
water reservoir
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Expired - Fee Related
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JP2002193670A
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Japanese (ja)
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JP2004036460A (en
Inventor
一人 澤田
光則 柳
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Kyosan Denki Co Ltd
Denso Corp
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Kyosan Denki Co Ltd
Denso Corp
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Priority to JP2002193670A priority Critical patent/JP4000018B2/en
Priority to DE10315052A priority patent/DE10315052A1/en
Publication of JP2004036460A publication Critical patent/JP2004036460A/en
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Publication of JP4000018B2 publication Critical patent/JP4000018B2/en
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Description

【0001】
【発明の属する技術分野】
本願発明は、自動車等の燃料供給系に設けられるディーゼルフィルタに関し、特に搭載場所の制約を受けないようにしたディーゼルフィルタに関する。
【0002】
【従来の技術】
自動車等のエンジンとして古くからディーゼルエンジンが利用されている。
【0003】
ディーゼルエンジンは、燃料として軽油を使用し、その軽油を噴射ポンプで高圧に圧縮し、インジェクタからエンジンの燃焼室に噴射させ、燃焼室で自己燃焼させるものである。
【0004】
その燃料系統を図5に示す。燃料系統は、主として噴射ポンプ1及びインジェクタ3で構成され、その他としてコモンレール2、燃料タンク4、ディーゼルフィルタ5等を有する。噴射ポンプ1は、高圧の燃料を供給するポンプであり、コモンレール2は、噴射ポンプ1で作られた高圧燃料を各気筒のインジェクタ3に分配する。黒塗りの矢印は、燃料タンク4からインジェクタ3への燃料の流れを示し、白抜きの矢印は、噴射ポンプ1から燃料タンク4への戻り燃料の流れを示す。
【0005】
ところで、燃料中には、塵芥、錆等の固形夾雑物、カーボン、ガム状物質のようなスラッジ及び水分等の異物が混入している。この異物は、インジェクタ3等の摩耗及びスティックの原因になるもので取り除く必要があり、そのため前記ディーゼルフィルタ5が設けられる。
【0006】
ディーゼルフィルタ5の機能について説明すると、ディーゼルフィルタ5は、エンジンに供給される燃料中に含まれているダストなどの固形物を除去し、インジェクタ3等の機械的摩耗及び発錆を防止して耐久性及びエンジンの安定作動を確保するためのもので、燃料経路中には必須のものである。
【0007】
また、その他として2つの機能が要求される。その1つはワックス除去機能である。軽油は低温になるとワックスが析出する特性を持っている。気温に適しない軽油を使用するとワックスが多量に析出し、濾過部材のエレメントが目詰まりを起こして燃料が流れなくなり、エンジンが停止に至る場合がある。従って、低温でも燃料の流動性を維持する機能が必要となる。
【0008】
2つ目の機能は水分離機能である。燃料中には水分が含まれる。この水分は溶解水と遊離水に分けられる。溶解水は燃料経路内に停滞することなく燃料とともに消費されるため弊害はないが、遊離水は軽油より比重が大きいため噴射ポンプ内に停滞し、発錆、スティックの原因になりやすい。この遊離水は、供給燃料中に遊離水として含有したり、給油時に雨水として侵入したり、空気中の湿気が水滴となって侵入したり、燃料の温度低下により溶解水が析出したり等により発生する。このように遊離水はいろいろな経路で燃料系に侵入し、その多くは燃料タンクの底に溜まる。ところが燃料タンクの底に溜まった水は、走行時の振動等で燃料系統に送り出されるためいずれにしても燃料経路中での水分離機能は欠かせないものとなっている。
【0009】
図5に示すディーゼルフィルタ5は、キャップ部材5a、濾過部5b及び水溜め部5cを有するいわゆる水溜め部一体型ディーゼルフィルタで、その構造の概略を図6に示す。この水溜め部一体型ディーゼルフィルタ5は、大きく分けると上方のキャップ部材5aと、このキャップ部材5aの下部に取り付けられるコップ状のケースa内に形成される濾過部5b及び水溜め部5cとからなる。
【0010】
そして前記キャップ部材5aには、燃料タンク4に連通される燃料供給管b、噴射ポンプ1に連通される燃料排出管c及び水溜め部5cの分離水を排出するとき等に使われるハンドポンプdが取り付けられている。
【0011】
また、ケースa内には、上方に濾過部5bが下方に水溜め部5cが形成されており、前記濾過部5bは燃料通路e、エレメントf及びシール部材gが取り付けられるエレメント保持部材hからなる濾過部材iを有し、燃料中の異物を濾過する。この濾過部5bの下方には水溜め部5cが形成される。この水溜め部5cは燃料に含まれる水を分離し貯水する機能を有する下部空間jからなり、その下部空間j内には分離水の量を検知するためのレベルスイッチk及び分離水を排出するためのドレンコックmが設けられる。
【0012】
燃料供給管b及び燃料通路eを介して下部空間jに導入される燃料は、下部空間jで180度方向を変えられ、上方に向かいエレメントfを通り濾過されて燃料排出管cから排出されることになるが、下部空間jで方向を変える際水が分離される。水は燃料より比重が大きいため分離された水は下部空間j内に分離水nとして溜まる。この分離水nが所定量になるとスイッチが入り、運転席に取り付けられている警告灯を点灯し、運転者に下部空間j内に溜まった分離水nを除去するように警告を発する。運転者は、ドレンコックmを開け分離水nを排出することになる。
【0013】
このように図5及び図6で示す従来の水溜め部一体型ディーゼルフィルタは、濾過部5b及び水溜め部5cを1つのケースa内に一体的に組み付けて構成されるため、部品点数が少なく、且つコンパクトになる等の利点を有するものである。
【0014】
ところで自動車用のディーゼルフィルタは、エンジンルーム内のエンジン等を配置した後の残った狭い空間に設けられるものである。一方、従来の水溜め部一体型ディーゼルフィルタは、図5及び図6で示すように濾過部5b及び水溜め部5cを上下方向に配置してなるもので、どうしても上下方向に長くならざるをえないものである。そのため、ディーゼルフィルタの搭載場所によっては搭載できない事態が発生する。
【0015】
このような事態に対処するものとして第7図に示すように濾過部と水溜め部とを別体のものとして形成し、燃料経路中に濾過器6及び水溜め器7として組み込んでなるいわゆる水溜め部分離型ディーゼルフィルタが知られている。この水溜め部分離型ディーゼルフィルタは、従来の水溜め部一体型ディーゼルフィルタの濾過部と水溜め部とを、濾過機能のみを有する濾過器6と燃料経路中の水を分離貯水する機能を有する水溜め器7として独立させ、図7に示すように燃料経路中にそれぞれ配置してなるものである。それぞれの構造は、濾過器6は、本願発明の一態様として示す図3に示すものとほぼ同様なもの(但し、ケースは図3に示すようにその底部において分離されておらず一体である。)で、水溜め器7は、同じく本願発明の一態様として示す図4に示すものとほぼ同様なものである。
【0016】
この水溜め部分離型ディーゼルフィルタは、水溜め部一体型ディーゼルフィルタに比べ搭載場所の制約を受けない利点があるものの、搭載場所の制約を考慮した場合、予め、水溜め部一体型ディーゼルフィルタと水溜め部分離型ディーゼルフィルタを用意しておかなければならず、それぞれの部品、それぞれの部品を作るための型、或いはそれぞれの部品を作るための生産ライン等、生産コストを押し上げる原因となっていた。
【0017】
また従来のディーゼルフィルタは、図6に示すように濾過部材iの一部品であるエレメント保持部材hをエレメントfの下端部に設けるとともに、このエレメント保持部材hの外周側部にシール部材gを設けていた。そのため濾過部材iを交換する場合、キャップ部材5aを取り外し、濾過部材iを上方に取り出すことになるが、濾過部材iの下部にシール部材gが取り付けられているため、濾過部材iを取り出す際シール部材gがケースaの内周面を擦りながら移動する距離が長くなり作業性が悪いばかりか、シール部材gが摩耗しやすかった。
【0018】
【発明が解決しようとする課題】
本願発明の目的は、濾過機能を有する濾過部及び水を分離貯水する機能を有する水溜め部を一体での使用及び別体での使用を可能とした構造にすることにより、生産コストが安価で、且つ搭載場所の制約を受けないディーゼルフィルタを提供することである。
【0019】
また、本願発明の他の目的は、濾過部材の一部品であるエレメント保持部材に設けられるシール部材を濾過部材の上方に設けることにより、濾過部材を取り出す作業を容易にし、且つシール部材の摩耗を低減してなるディーゼルフィルタを提供することである。
【0020】
【課題を解決するための手段】
上記目的を達成するため、本願発明は、以下のような構成を採用してなる。
【0021】
請求項1に係る発明においては、外殻を形成するケースと、該ケースの開口部に取り付けられる第1のキャップ部材と、前記ケース内に収納され燃料中の異物を濾過する濾過部材を有する濾過部と、前記ケース内に形成され分離された燃料中の水を貯留する水溜め部と、上方が開口された皿形状を呈し前記水溜め部より高さの低い蓋部材と、下方が開口し燃料供給管及び燃料排出管を有する第2のキャップ部材とを有、前記濾過部と前記水溜め部とそれぞれ別体に形成され、前記第1のキャップ部材と前記濾過部と前記水溜め部とを一体に組み合わせた一体型としての使用と、前記第1のキャップ部材と前記濾過部と前記蓋部材とを一体に組み合わせたものと、前記第2のキャップ部材と前記水溜め部とを一体に組み合わせたものとの分離型としての使用とを可能にしてなる構成。
【0024】
そしてこれらの構成により、ディーゼルフィルタの搭載場所に制約を受けない場合には、水溜め部一体型のものとして対応でき、搭載場所に制約を受ける場合には、水溜め部を分離した水溜め部分離型のものとして簡単な仕様変更で対応できる。
【0025】
請求項に係る発明においては、請求項1に係る発明において濾過部材を前記ケースに対し上方より脱着可能にするとともに、前記濾過部材の上方部にのみシール部材を取り付ける構成。
【0026】
そしてこの構成により、エレメントの交換作業が簡単になり、且つシール部材の耐摩耗性が向上する。
【0027】
【発明の実施の形態】
(第1の実施の形態)
図1及び図2は本願発明の濾過部と水溜め部とを一体化した形態で使用するいわゆる水溜め部一体型ディーゼルフィルタであり、図1はそれらを組み合わせた状態を示す断面図で、図2はキャップ部材及び濾過部材を切り離した状態を示す断面図である。構造について説明する。
【0028】
ディーゼルフィルタ10は、濾過部10a、この濾過部10aの下方に取り付けられる水溜め部10b及び前記濾過部10aの上方に取り付けられるキャップ部材12とからなる。キャップ部材12は樹脂製で、その上方には直径方向に対向して供給管取付部12d、排出管取付部12eが形成される。そして供給管取付部12dには燃料供給管13がパッキン13aを介して一体的に連結され、排出管取付部12eには燃料排出管14がパッキン14aを介して一体的に連結される。
【0029】
また、供給管取付部12dに燃料供給管13を取り付ける際に第1の逆止弁12fが狭持されるとともに、後記の導入口12bの上方には第2の逆止弁12gが取り付けられる。これら第1の逆止弁12f及び第2の逆止弁12gは同じ機能を有する弁で、燃料供給管13側から後記の濾過部材16側への流れは許容するが、その逆の流れは阻止するもので、後記のハンドポンプ15の作動を円滑に行うために設けられている。
【0030】
キャップ部材12の上方には、ハンドポンプ15が取り付けられる。該ハンドポンプ15は、外郭を形成する中空状のポンプケース15aと、蓋部15dとからなり、その内部には、スプリング15cによって上向きの力を付勢されたプランジャ15bが配置される。蓋部15dには図示しない開口が設けられており、プランジャ15bを押し下げながら所定角度回動して離すと、図1のようにプランジャ15b上方外周上に設けられるフランジ15eが蓋部15dの下面に当接し、プランジャ15bを下がった状態に保持する。プランジャ15bを上動させる場合には、プランジャ15bを押し下げつつ最初と反対方向に所定角度回動してから離すとプランジャ15bは上方へ飛び出る。その状態でプランジャ15bを上下動すると、その下部で空気並びに燃料を押圧し、押圧された空気並びに燃料は第1の逆止弁12f及び第2の逆止弁12gの作用により下流の燃料排出管14側に押し出される。このハンドポンプ15は、濾過部材16を交換した後とか、ディーゼルフィルタ10から水抜きを行う時等に使われる。なお、この実施の形態ではハンドポンプ15をキャップ部材12に取り付けたものとして示しているが、その取付位置についてはキャップ部材12以外でも良い。
【0031】
前記濾過部10aは、濾過ケース11a及び濾過部材16からなる。濾過ケース11aは、上下が開口した樹脂製の中空円筒部材であり、その上端外周にはネジ22が形成され、下端外周にはフランジ37が形成される。濾過ケース11aとキャップ部材12の連結は、まず、濾過部材16を上方より濾過ケース11a内に収納し、キャップ部材12のキャップ下端部12aにパッキン21を取り付けた状態でキャップ部材12を濾過ケース11aの上端部に嵌合し、次いで締付部材23を濾過ケース11aの上端外周上のネジ22に合わせて締め付け、両者を密に締結する。濾過部材16を交換する場合は前記の手順を逆に行うことになる。
【0032】
濾過部材16は、その中央に位置し芯をも兼ねる燃料通路18と、燃料通路18の外周上に同心状に巻かれた紙等から成形されるエレメント17と、その上端に取り付けられ、エレメントを保持するエレメント保持部材19とからなる。なお、濾過部材16は前記した組み合わせからなるものに限られることなく、少なくとも濾過機能を有するものだけでも良い。
【0033】
そしてエレメント保持部材19の外周側部にはリング状のシール部材20が取り付けられ、エレメント保持部材19と濾過ケース11aとの間を密に嵌合し、濾過されない燃料が排出口12cに流出しないようにしている。このようにエレメント保持部材19をエレメント17の上端部に取り付けているため、濾過部材16の交換時、濾過部材16を濾過ケース11aより取り出すことになるが、濾過部材16を少し持ち上げた状態でシール部材20と濾過ケース11aとの当接が外れ、その後は抵抗なく濾過部材16を持ち上げることができるためその取り外し作業を容易に行うことができる。更に、濾過部材16を持ち上げる場合シール部材20と濾過ケース11aとの当接距離が短くてすむためシール部材20が痛むことがなく、濾過部材16を交換した後同じシール部材20を再利用することができる。
【0034】
前記水溜め部10bは、水溜めケース11bによって形成される。この水溜めケース11bは、上方が開口されたコップ形状を呈し、その内部に燃料が流れ込み、且つ燃料中の分離水を貯水するための下部空間27が形成される。また、その上端外周には濾過ケース11aの下部外周に形成されるフランジ37と同じ大きさのフランジ38が形成されており、ディーゼルフィルタ10を水溜め部一体型ディーゼルフィルタとして使用する際には、両ケース11a、11bのそれぞれのフランジ37、38を当接し、当接箇所を振動溶着、熱溶着或いは超音波溶着等の固着手段で一体化する。
【0035】
濾過ケース11a内に濾過部材16を装着する場合濾過部材16を保持するエレメント保持部材19の下部は濾過ケース11aのストッパ部26に当設し位置決めされる。そして濾過ケース11aの上方開口にキャップ部材12を取り付けた状態では、濾過部材16のエレメント保持部材19の上面にキャップ下端部12aが当接され、濾過部材16は濾過ケース11aのストッパ部26とキャップ下端部12aとで狭持されるとともに、濾過部材16の上部に上部空間25が、下部に下部空間27が形成されることになる。
【0036】
また、キャップ部材12の中央内面にはその上部に導入口12bを有するリング状部材24が垂下されており、濾過ケース11a内に濾過部材16を収納した後キャップ部材12を締結した状態では、燃料通路18の上端突出部18aがリング状部材24に密に嵌合され、燃料供給管13及び導入口12bを介してリング状部材24に導入される燃料の全ては燃料通路18より下部空間27に流入する。
【0037】
下部空間27に流入した燃料は、下部空間27内で流速が低下し、含まれる水分が分離され、下部空間27の底部に分離水36として溜まる。一方、水が分離された燃料は、方向を変えエレメント17内に導入され、エレメント17で濾過され不純物が除去される。不純物が除去された燃料は、上部空間25に押し出され、キャップ部材12の上面に形成される排出口12cを経て燃料排出管14に排出される。
【0038】
前記下部空間27内には、レベルスイッチ28及びドレンコック34が設けられている。レベルスイッチ28は、フロート式のもので中空状の軸部材29及びフロート30からなる。中空状の軸部材29は、下方端開口の細長い軸状部材でその先端には傘状のストッパ29aが設けられ、その中空部内にはリード線33が連結されるスイッチ部32が配設される。
【0039】
フロート30は、樹脂製の中心に開口を有する中空状部材で、その開口底部にはリング状の磁石31が取り付けられており、軸部材29に沿って上下動自在にされる。フロート30は、下部空間27の分離水36の量によって上下動し、フロート30が傘状のストッパ29aに当接する位置が分離水36の危険水位になるように設定される。即ち、下部空間27の分離水36の量が増え、フロート30が所定の位置にくるとフロート30に取り付けられている磁石31がスイッチ部32の可動接点を固定接点側に引き寄せ、両接点を接触させる。すると、運転席の警告灯を点灯させる。警告灯の点灯を確認すると運転者は、水溜めケース11bの底部に設けられるドレンコック34を開放し、溜まった分離水36を排出することになる。ドレンコック34は、ネジ部を手で回動することにより排出通路35を開口することにより行う。この場合、ハンドポンプ15を使うこともできる。
【0040】
(第2の実施の形態)
図3及び図4は本願発明の濾過部と水溜め部とを分離した形態で使用するいわゆる水溜め部分離型ディーゼルフィルタであり、図3は分離した濾過器40を、図4は分離した水溜め器50のそれぞれの断面図を示し、図7に示すように燃料経路中に配置される。なお、第1の実施の形態のものと共通する部分については同じ番号で示し、その詳細な説明は第1の実施の形態のものと同様であるので省略する。
【0041】
図3は燃料中の異物を濾過する濾過器40である。該濾過器40は、濾過部10a、この濾過部10aの下方に取り付けられる蓋部材41及び前記濾過部10aの上方に取り付けられるキャップ部材12からなる。そして濾過部10a及びキャップ部材12は第1の実施の形態で説明したものと同じものであり、搭載場所の制約で水溜め部分離型ディーゼルフィルタを用いざるを得ない場合であっても、水溜め部一体型ディーゼルフィルタで用いる濾過部10a及びキャップ部材12をそのまま使用することができる。
【0042】
前記蓋部材41は、形状としては高さが低いことを除いて第1の実施の形態で説明した水溜めケース11bとほぼ同一である。即ち、この蓋部材41は、上方が開口された皿形状を呈し、濾過部10aの下部開口を閉蓋し、燃料通路18よりその内部に流れ込む燃料をエレメント17方向に反転させる機能を有する。また、その上端外周には濾過ケース11aの下部外周に形成されるフランジ37と同じ大きさのフランジ42が形成されており、濾過ケース11aのフランジ37とこの蓋部材41のフランジ42を当接し、当接箇所を振動溶着、熱溶着或いは超音波溶着等の固着手段で一体化し、濾過器40を形成する。
【0043】
濾過ケース11a内に濾過部材16を装着する場合濾過部材16を保持するエレメント保持部材19の下部は濾過ケース11aのストッパ部43に当設し位置決めされる。そして濾過ケース11aの上方開口にキャップ部材12を取り付けた状態では、濾過部材16のエレメント保持部材19の上面にキャップ下端部12aが当接され、濾過部材16は濾過ケース11aのストッパ部43とキャップ下端部12aとで狭持されるとともに、蓋部材41内に小容量の下部空間44が形成されることになる。
【0044】
このように水溜め部分離型ディーゼルフィルタで用いる場合の濾過器40は、水溜め部一体型ディーゼルフィルタの部品以外の部品はこの蓋部材41のみで済むことになるため、その生産コストを大幅に低減することができる。
【0045】
図4は燃料中の水を分離貯水する機能を有する水溜め器50である。該水溜め器50は、水溜め部10b及びこの水溜め部10bの上方に取り付けられるキャップ部材51からなる。この水溜め部10bは第1の実施の形態で説明したものと同じものであり、搭載場所の制約で水溜め部分離型ディーゼルフィルタを用いざるを得ない場合であっても、水溜め部一体型ディーゼルフィルタで用いる水溜め部10bをそのまま使用することができる。
【0046】
前記キャップ部材51は、前記蓋部材41とほぼ同じ皿形状を呈し、その側部には対向して燃料供給管52と燃料排出管53が取り付けられ、更にその下部外周には水溜め部10bの上部外周に形成されるフランジ38と同じ大きさのフランジ54が形成されており、水溜め部10bのフランジ38とこのキャップ部材51のフランジ54を当接し、当接箇所を振動溶着、熱溶着或いは超音波溶着等の固着手段で一体化し、水溜め器50を形成する。
【0047】
このように水溜め部分離型ディーゼルフィルタで用いる場合の水溜め器50は、水溜め部一体型ディーゼルフィルタの部品以外の部品はこのキャップ部材51のみで済むことになるため、前記濾過器40同様その生産コストを大幅に低減することができる。
【0048】
そして図3で示す濾過器40及び図4で示す水溜め器50は、図7で示すような位置で燃料タンク4と噴射ポンプ1との燃料経路中にそれぞれ離れた位置で配置され、水溜め器50で燃料中の水を分離するとともに、濾過器40で燃料中の異物を除去することになる。
【0049】
本願発明は、上記各実施の態様の構成に限定されるものではなく、発明の要旨を逸脱しない範囲において適宜設計変更可能である。
【0050】
【発明の効果】
請求項1に係る発明においては、ディーゼルフィルタの濾過部と水溜め部とをそれぞれ別体に形成し、第1のキャップ部材と濾過部と水溜め部とを一体に組み合わせた一体型としての使用と、第1のキャップ部材と濾過部と蓋部材とを一体に組み合わせたものと、第2のキャップ部材と水溜め部とを一体に組み合わせたものとの分離型としての使用とを可能にすることにより、ディーゼルフィルタの搭載場所に制約を受けない場合には、濾過部と水溜め部とを一体に組み合わせた水溜め部一体型のものとして対応でき、搭載場所に制約を受ける場合には、濾過部の開口に水溜め部に替えて新たな部品としての蓋部材を取り付けてなる濾過器と、水溜め部の開口に濾過部に替えて新たな部品としてのキャップ部材を取り付けてなる水溜め器を別体のものとして形成し、それぞれの器を燃料経路中に配置してなる水溜め部分離型のものとして簡単な仕様変更で対応することができる。そしてこの仕様変更には、新たな部品としては蓋部材と新たなキャップ部材とだけで済み、その他は水溜め部一体型のものをそのまま使用することができるため新たに水溜め部分離型のものを全て生産する場合に比べ生産コストを大幅に低減することができる。
【0051】
請求項に係る発明においては、濾過部材をケースに対し上方より脱着可能にするとともに、濾過部材の上方部にのみシール部材を取り付けることにより、請求項1に係る発明の効果に加え、濾過部材の取り外しが容易になるため濾過部材の交換作業を簡単、且つ短時間で行うことができるようになりその分生産コストを低減することができる。また、濾過部材の取り外し時にシール部材が摩耗する恐れが低減し、再度シール部材を使用することができるようになるためその分部品コストを低減することができる。
【図面の簡単な説明】
【図1】本願発明の水溜め部一体型ディーゼルフィルタを示す断面図。
【図2】本願発明の水溜め部一体型ディーゼルフィルタの組み立て前の状態を示す断面図。
【図3】本願発明の水溜め部分離型ディーゼルフィルタの濾過部分を示す断面図。
【図4】本願発明の水溜め部分離型ディーゼルフィルタの水溜め部分を示す断面図。
【図5】水溜め部一体型ディーゼルフィルタを組み込んだ燃料系統図。
【図6】従来の水溜め部一体型ディーゼルフィルタの断面図。
【図7】水溜め部分離型ディーゼルフィルタを組み込んだ燃料系統図。
【符号の説明】
1…噴射ポンプ 2…コモンレール
3…インジェクタ 4…燃料タンク
5…水溜め部一体型ディーゼルフィルタ
5a…キャップ部材 5b…濾過部
5c…水溜め部 10…ディーゼルフィルタ
10a…濾過部 10b…水溜め部
11a…濾過ケース 11b…水溜めケース
12…キャップ部材 12a…キャップ下端部
12b…導入口 12c…排出口
12d…供給管取付部 12e…排出管取付部
12f…第1の逆止弁 12g…第2の逆止弁
13,52…燃料供給管 13a,14a,21…パッキン
14,53…燃料排出管 15…ハンドポンプ
15a…ポンプケース 15b…プランジャ
15c…スプリング 15d…蓋部
15e,37,38,42,54…フランジ
16…濾過部材 17…エレメント
18…燃料通路 18a…上端突出部
19…エレメント保持部材 20…シール部材
22…ネジ 23…付部材
24…リング状部材 25…上部空間
26,43…ストッパ部 27,44…下部空間
28…レベルスイッチ 29…軸部材
29a…ストッパ 30…フロート
31…磁石 32…スイッチ部
33…リード線 34…ドレンコック
35…排出通路 36…分離水
40…濾過器 41…蓋部材
50…水溜め器 51…キャップ部材
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a diesel filter provided in a fuel supply system of an automobile or the like, and more particularly, to a diesel filter that is not subject to restrictions on mounting location.
[0002]
[Prior art]
Diesel engines have long been used as engines for automobiles and the like.
[0003]
A diesel engine uses light oil as fuel, compresses the light oil to a high pressure with an injection pump, injects it from an injector into a combustion chamber of the engine, and self-combusts in the combustion chamber.
[0004]
The fuel system is shown in FIG. The fuel system is mainly composed of an injection pump 1 and an injector 3, and includes a common rail 2, a fuel tank 4, a diesel filter 5 and the like as others. The injection pump 1 is a pump that supplies high-pressure fuel, and the common rail 2 distributes the high-pressure fuel produced by the injection pump 1 to the injectors 3 of each cylinder. The black arrow indicates the flow of fuel from the fuel tank 4 to the injector 3, and the white arrow indicates the flow of return fuel from the injection pump 1 to the fuel tank 4.
[0005]
Incidentally, foreign matters such as solid impurities such as dust and rust, sludge such as carbon and gum-like substances, and moisture are mixed in the fuel. The foreign matter is a cause of wear and sticking of the injector 3 and the like and needs to be removed. Therefore, the diesel filter 5 is provided.
[0006]
The function of the diesel filter 5 will be described. The diesel filter 5 removes solids such as dust contained in the fuel supplied to the engine, and prevents the mechanical wear and rusting of the injector 3 and the like to be durable. This is indispensable in the fuel path and ensures the stable operation of the engine.
[0007]
In addition, two functions are required. One is the wax removal function. Light oil has the property of precipitating wax at low temperatures. If light oil that is not suitable for the temperature is used, a large amount of wax may precipitate, causing clogging of the elements of the filter member, preventing fuel from flowing, and stopping the engine in some cases. Therefore, a function for maintaining the fluidity of the fuel is required even at a low temperature.
[0008]
The second function is a water separation function. The fuel contains moisture. This water is divided into dissolved water and free water. Dissolved water is consumed with the fuel without stagnation in the fuel path, so there is no harmful effect. However, free water has a higher specific gravity than light oil, so it stagnates in the injection pump and easily causes rusting and sticking. This free water is contained in the supplied fuel as free water, penetrates as rainwater when refueling, moisture in the air enters as water droplets, dissolved water precipitates due to a drop in fuel temperature, etc. appear. In this way, the free water enters the fuel system through various paths, and most of it accumulates at the bottom of the fuel tank. However, the water collected at the bottom of the fuel tank is sent to the fuel system due to vibrations during traveling and the like, and in any case, the water separation function in the fuel path is indispensable.
[0009]
The diesel filter 5 shown in FIG. 5 is a so-called water sump integrated diesel filter having a cap member 5a, a filtration part 5b, and a water sump part 5c, and its structure is schematically shown in FIG. The water reservoir integrated diesel filter 5 is roughly divided into an upper cap member 5a, and a filtration portion 5b and a water reservoir 5c formed in a cup-shaped case a attached to the lower portion of the cap member 5a. Become.
[0010]
The cap member 5a includes a fuel supply pipe b communicated with the fuel tank 4, a fuel discharge pipe c communicated with the injection pump 1, and a hand pump d used for discharging separated water from the water reservoir 5c. Is attached.
[0011]
Further, in the case a, a filtration part 5b is formed on the upper side and a water reservoir part 5c is formed on the lower side. The filtration part 5b is composed of an element holding member h to which the fuel passage e, the element f and the seal member g are attached. It has a filter member i and filters out foreign matter in the fuel. A water reservoir 5c is formed below the filter 5b. The water reservoir 5c includes a lower space j having a function of separating and storing water contained in the fuel, and a level switch k for detecting the amount of separated water and the separated water are discharged into the lower space j. A drain cock m is provided.
[0012]
The fuel introduced into the lower space j through the fuel supply pipe b and the fuel passage e is changed in direction by 180 degrees in the lower space j, filtered upward through the element f, and discharged from the fuel discharge pipe c. In fact, water is separated when changing direction in the lower space j. Since water has a higher specific gravity than fuel, the separated water collects as separated water n in the lower space j. When the separated water n reaches a predetermined amount, the switch is turned on, a warning light attached to the driver's seat is turned on, and a warning is issued to the driver so as to remove the separated water n accumulated in the lower space j. The driver opens the drain cock m and discharges the separated water n.
[0013]
As described above, since the conventional water reservoir integrated diesel filter shown in FIGS. 5 and 6 is configured by integrally assembling the filtering portion 5b and the water reservoir 5c in one case a, the number of parts is small. In addition, it has advantages such as being compact.
[0014]
By the way, the diesel filter for motor vehicles is provided in the narrow space which remained after arrange | positioning the engine etc. in an engine room. On the other hand, as shown in FIGS. 5 and 6, the conventional water sump integrated diesel filter is formed by arranging the filtration part 5 b and the water sump part 5 c in the vertical direction, and inevitably has to be long in the vertical direction. There is nothing. Therefore, the situation where it cannot mount depending on the mounting place of a diesel filter occurs.
[0015]
In order to cope with such a situation, as shown in FIG. 7, a filtration part and a water reservoir part are formed as separate bodies, and so-called water is formed as a filter 6 and a water reservoir 7 in the fuel path. A reservoir separation type diesel filter is known. This water pool separation type diesel filter has a function of separating and storing water in a filter 6 having only a filtration function and a water in a fuel path by using a filtration unit and a water storage unit of a conventional water pool unit integrated diesel filter. The water reservoir 7 is made independent and arranged in the fuel path as shown in FIG. In each structure, the filter 6 is substantially the same as that shown in FIG. 3 as one embodiment of the present invention (however, the case is not separated at the bottom as shown in FIG. 3 and is integrated. The water reservoir 7 is substantially the same as that shown in FIG. 4 which is also shown as an embodiment of the present invention.
[0016]
Although this water pool separation type diesel filter has the advantage of not being restricted by the mounting location compared to the water storage unit integrated diesel filter, when considering the mounting location restrictions, A water pool separation type diesel filter must be prepared, which is the cause of raising the production cost of each part, mold for making each part, production line for making each part, etc. It was.
[0017]
Further, in the conventional diesel filter, as shown in FIG. 6, an element holding member h, which is a part of the filtering member i, is provided at the lower end portion of the element f, and a seal member g is provided on the outer peripheral side portion of the element holding member h. It was. Therefore, when the filter member i is replaced, the cap member 5a is removed and the filter member i is taken out upward. However, since the seal member g is attached to the lower part of the filter member i, the seal is taken out when the filter member i is taken out. The distance that the member g moved while rubbing the inner peripheral surface of the case a was increased, and not only the workability was poor, but also the seal member g was easily worn.
[0018]
[Problems to be solved by the invention]
The purpose of the present invention is to reduce the production cost by providing a structure that allows a filtration part having a filtration function and a water reservoir part having a function of separating and storing water to be used integrally or separately. And it is providing the diesel filter which does not receive the restrictions of a mounting place.
[0019]
Another object of the present invention is to provide a seal member provided on an element holding member, which is a part of the filter member, above the filter member, thereby facilitating the work of removing the filter member and reducing the wear of the seal member. It is to provide a diesel filter that is reduced.
[0020]
[Means for Solving the Problems]
In order to achieve the above object, the present invention employs the following configuration.
[0021]
In the invention which concerns on Claim 1, it attaches to the case which forms an outer shell, and the opening part of this case First A cap member, a filtration part having a filtration member housed in the case and filtering foreign matter in the fuel, and a water reservoir part that is formed in the case and stores water in the separated fuel A lid member that has a dish shape with an upper opening and is lower than the water reservoir, and a second cap member that has a fuel supply pipe and a fuel discharge pipe that are open at the bottom. Have Shi The filtration part and the water reservoir part Is Formed separately The first cap member, the filtration portion, and the water reservoir portion are combined as an integral type, and the first cap member, the filtration portion, and the lid member are integrally combined. Can be used as a separate type of a combination of the second cap member and the water reservoir portion. Constitution.
[0024]
With these configurations, when there is no restriction on the mounting location of the diesel filter, it can be handled as a water reservoir integrated type, and when the mounting location is restricted, the water reservoir separated from the water reservoir. As a separate type, it can be handled with a simple specification change.
[0025]
Claim 2 In the invention according to claim 1 In the invention, the filter member can be attached to and detached from the case from above, and the seal member is attached only to the upper part of the filter member.
[0026]
With this configuration, the element replacement operation is simplified, and the wear resistance of the seal member is improved.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
(First embodiment)
1 and 2 are so-called water sump integrated diesel filters that are used in a form in which the filtration part and the water sump part of the present invention are integrated, and FIG. 1 is a cross-sectional view showing a state in which they are combined. 2 is a cross-sectional view showing a state in which the cap member and the filtering member are separated. The structure will be described.
[0028]
The diesel filter 10 includes a filtration part 10a, a water reservoir part 10b attached below the filtration part 10a, and a cap member 12 attached above the filtration part 10a. The cap member 12 is made of resin, and a supply pipe mounting portion 12d and a discharge pipe mounting portion 12e are formed above the cap member 12 in the diametrical direction. A fuel supply pipe 13 is integrally connected to the supply pipe mounting portion 12d via a packing 13a, and a fuel discharge pipe 14 is integrally connected to the discharge pipe mounting portion 12e via a packing 14a.
[0029]
In addition, when the fuel supply pipe 13 is attached to the supply pipe attachment portion 12d, the first check valve 12f is sandwiched, and a second check valve 12g is attached above the inlet 12b described later. The first check valve 12f and the second check valve 12g have the same function, and allow the flow from the fuel supply pipe 13 side to the filter member 16 side described later, but prevent the reverse flow. Therefore, it is provided to smoothly operate the hand pump 15 described later.
[0030]
A hand pump 15 is attached above the cap member 12. The hand pump 15 includes a hollow pump case 15a that forms an outer shell and a lid portion 15d. A plunger 15b that is biased upward by a spring 15c is disposed therein. An opening (not shown) is provided in the lid portion 15d. When the plunger 15b is pushed down and rotated by a predetermined angle and released, a flange 15e provided on the upper outer periphery of the plunger 15b as shown in FIG. 1 is formed on the lower surface of the lid portion 15d. It abuts and holds the plunger 15b in a lowered state. When the plunger 15b is moved upward, when the plunger 15b is pushed down and rotated by a predetermined angle in the direction opposite to the initial direction and then released, the plunger 15b pops upward. When the plunger 15b is moved up and down in this state, air and fuel are pressed at the lower part thereof, and the pressed air and fuel are moved downstream by the action of the first check valve 12f and the second check valve 12g. 14 is pushed out. The hand pump 15 is used after the filter member 16 has been replaced or when draining water from the diesel filter 10. In this embodiment, the hand pump 15 is shown as being attached to the cap member 12, but the attachment position may be other than the cap member 12.
[0031]
The filtration unit 10 a includes a filtration case 11 a and a filtration member 16. The filtration case 11a is a resin-made hollow cylindrical member that is open at the top and bottom. A screw 22 is formed on the outer periphery of the upper end, and a flange 37 is formed on the outer periphery of the lower end. In order to connect the filtration case 11a and the cap member 12, first, the filtration member 16 is accommodated in the filtration case 11a from above, and the cap member 12 is attached to the lower end portion 12a of the cap member 12 with the packing 21 attached thereto. Then, the tightening member 23 is tightened according to the screw 22 on the outer periphery of the upper end of the filtration case 11a, and both are tightened tightly. When the filter member 16 is replaced, the above procedure is reversed.
[0032]
The filter member 16 is attached to the upper end of a fuel passage 18 located in the center and serving as a core, an element 17 formed from paper or the like wound concentrically on the outer periphery of the fuel passage 18, It consists of an element holding member 19 to hold. The filtering member 16 is not limited to the above-described combination, and may be only one having at least a filtering function.
[0033]
A ring-shaped seal member 20 is attached to the outer peripheral side portion of the element holding member 19 so that the element holding member 19 and the filtration case 11a are closely fitted so that unfiltered fuel does not flow out to the discharge port 12c. I have to. Since the element holding member 19 is attached to the upper end portion of the element 17 in this way, when the filtration member 16 is replaced, the filtration member 16 is taken out from the filtration case 11a, but the filter member 16 is slightly lifted and sealed. Since the contact between the member 20 and the filtration case 11a is released and thereafter the filtration member 16 can be lifted without resistance, the removal operation can be easily performed. Further, when the filter member 16 is lifted, the contact distance between the seal member 20 and the filter case 11a can be short, so that the seal member 20 does not hurt, and the same seal member 20 is reused after the filter member 16 is replaced. Can do.
[0034]
The water reservoir 10b is formed by a water reservoir case 11b. The water storage case 11b has a cup shape with an opening at the top. A fuel flows into the water storage case 11b and a lower space 27 for storing separated water in the fuel is formed. Further, a flange 38 having the same size as the flange 37 formed on the lower outer periphery of the filtration case 11a is formed on the outer periphery of the upper end, and when the diesel filter 10 is used as a water reservoir integrated diesel filter, The flanges 37 and 38 of both cases 11a and 11b are brought into contact with each other, and the contact portions are integrated by fixing means such as vibration welding, heat welding, or ultrasonic welding.
[0035]
When the filtration member 16 is mounted in the filtration case 11a, the lower part of the element holding member 19 that holds the filtration member 16 is positioned against the stopper portion 26 of the filtration case 11a. In a state where the cap member 12 is attached to the upper opening of the filtration case 11a, the cap lower end portion 12a is brought into contact with the upper surface of the element holding member 19 of the filtration member 16, and the filtration member 16 is connected to the stopper portion 26 of the filtration case 11a and the cap. The upper space 25 is formed in the upper part of the filtering member 16 and the lower space 27 is formed in the lower part while being held between the lower end part 12a.
[0036]
In addition, a ring-shaped member 24 having an introduction port 12b at the upper portion thereof is suspended from the center inner surface of the cap member 12, and the fuel member is in a state where the cap member 12 is fastened after the filter member 16 is stored in the filter case 11a. The upper end protruding portion 18 a of the passage 18 is closely fitted to the ring-shaped member 24, and all of the fuel introduced into the ring-shaped member 24 through the fuel supply pipe 13 and the introduction port 12 b enters the lower space 27 from the fuel passage 18. Inflow.
[0037]
The fuel that has flowed into the lower space 27 has a reduced flow velocity in the lower space 27, the contained water is separated, and accumulates as separated water 36 at the bottom of the lower space 27. On the other hand, the fuel from which the water has been separated changes its direction and is introduced into the element 17 and is filtered by the element 17 to remove impurities. The fuel from which impurities have been removed is pushed out into the upper space 25 and discharged into the fuel discharge pipe 14 through the discharge port 12c formed on the upper surface of the cap member 12.
[0038]
In the lower space 27, a level switch 28 and a drain cock 34 are provided. The level switch 28 is a float type and includes a hollow shaft member 29 and a float 30. The hollow shaft member 29 is an elongated shaft-like member having an opening at the lower end, and an umbrella-shaped stopper 29a is provided at the tip, and a switch portion 32 to which a lead wire 33 is connected is disposed in the hollow portion. .
[0039]
The float 30 is a hollow member having an opening at the center made of resin, and a ring-shaped magnet 31 is attached to the bottom of the opening, and can be moved up and down along the shaft member 29. The float 30 moves up and down depending on the amount of the separation water 36 in the lower space 27, and the position where the float 30 abuts on the umbrella-shaped stopper 29 a is set to be a dangerous water level of the separation water 36. That is, when the amount of the separated water 36 in the lower space 27 increases and the float 30 comes to a predetermined position, the magnet 31 attached to the float 30 pulls the movable contact of the switch portion 32 toward the fixed contact, and contacts both contacts. Let Then, the warning light on the driver's seat is turned on. When it is confirmed that the warning lamp is turned on, the driver opens the drain cock 34 provided at the bottom of the water reservoir case 11b and discharges the accumulated separated water 36. The drain cock 34 is formed by opening the discharge passage 35 by manually turning the screw portion. In this case, the hand pump 15 can also be used.
[0040]
(Second Embodiment)
3 and 4 show a so-called water reservoir separation type diesel filter used in a form in which the filtration portion and the water reservoir according to the present invention are separated, FIG. 3 shows the separated filter 40, and FIG. 4 shows the separated water. Each sectional view of the reservoir 50 is shown, and is arranged in the fuel path as shown in FIG. Note that portions common to those in the first embodiment are denoted by the same reference numerals, and detailed descriptions thereof are the same as those in the first embodiment, and are omitted.
[0041]
FIG. 3 shows a filter 40 that filters foreign matter in the fuel. The filter 40 includes a filtering part 10a, a lid member 41 attached below the filtering part 10a, and a cap member 12 attached above the filtering part 10a. And the filtration part 10a and the cap member 12 are the same as what was demonstrated in 1st Embodiment, and even if it is a case where a water sump part isolation | separation type diesel filter must be used by the restrictions of a mounting place, The filtration unit 10a and the cap member 12 used in the reservoir unit-integrated diesel filter can be used as they are.
[0042]
The lid member 41 is substantially the same as the water reservoir case 11b described in the first embodiment except that the shape of the lid member 41 is low. In other words, the lid member 41 has a dish shape with an upper opening, closes the lower opening of the filtering portion 10a, and has a function of reversing the fuel flowing into the inside of the fuel passage 18 in the direction of the element 17. Further, a flange 42 having the same size as the flange 37 formed on the lower outer periphery of the filtration case 11a is formed on the outer periphery of the upper end, and the flange 37 of the filtration case 11a and the flange 42 of the lid member 41 are brought into contact with each other. The contact portion is integrated by fixing means such as vibration welding, heat welding, or ultrasonic welding to form the filter 40.
[0043]
When the filtration member 16 is mounted in the filtration case 11a, the lower part of the element holding member 19 that holds the filtration member 16 is positioned against the stopper 43 of the filtration case 11a. When the cap member 12 is attached to the upper opening of the filtration case 11a, the cap lower end portion 12a is brought into contact with the upper surface of the element holding member 19 of the filtration member 16, and the filtration member 16 is connected to the stopper portion 43 of the filtration case 11a and the cap. A lower space 44 having a small capacity is formed in the lid member 41 while being sandwiched between the lower end portion 12a.
[0044]
In this way, the filter 40 when used in the water pool separation type diesel filter requires only the lid member 41 other than the components of the water pool integral diesel filter, greatly increasing the production cost. Can be reduced.
[0045]
FIG. 4 shows a water reservoir 50 having a function of separating and storing water in fuel. The water reservoir 50 includes a water reservoir 10b and a cap member 51 that is attached above the water reservoir 10b. The water reservoir 10b is the same as that described in the first embodiment, and even if the water reservoir separation type diesel filter must be used due to restrictions on the mounting location, the water reservoir The water reservoir 10b used in the body type diesel filter can be used as it is.
[0046]
The cap member 51 has substantially the same dish shape as the lid member 41. A fuel supply pipe 52 and a fuel discharge pipe 53 are attached to the sides of the cap member 51 so as to face each other. A flange 54 having the same size as the flange 38 formed on the outer periphery of the upper portion is formed. The flange 38 of the water reservoir 10b and the flange 54 of the cap member 51 are brought into contact with each other, and the contact portion is subjected to vibration welding, heat welding or The water reservoir 50 is formed by integration by a fixing means such as ultrasonic welding.
[0047]
In this way, the water reservoir 50 used in the water pool separation type diesel filter is composed of only the cap member 51 except for the components of the water pool integrated diesel filter. The production cost can be greatly reduced.
[0048]
The filter 40 shown in FIG. 3 and the water reservoir 50 shown in FIG. 4 are arranged at positions separated from each other in the fuel path between the fuel tank 4 and the injection pump 1 at the positions shown in FIG. The water in the fuel is separated by the filter 50, and the foreign matter in the fuel is removed by the filter 40.
[0049]
The present invention is not limited to the configuration of each of the embodiments described above, and can be appropriately changed in design without departing from the gist of the invention.
[0050]
【The invention's effect】
Claim 1 In such an invention, the filter part and the water reservoir part of the diesel filter are formed separately. The first cap member, the filtration part, and the water reservoir part are combined as an integral type, the first cap member, the filtration part, and the lid member are integrally combined; Capable of being used as a separate type with the cap member and the water reservoir integrated together Therefore, when there is no restriction on the mounting location of the diesel filter, it can be handled as a water reservoir integrated type that combines the filtration part and the water reservoir part integrally. A filter in which a lid member as a new part is attached to the opening of the filtration part and a cap member as a new part is attached to the opening of the water reservoir instead of the filtration part. A reservoir can be formed as a separate unit, and each unit can be arranged in the fuel path, and can be dealt with by a simple specification change as a separated reservoir. And this specification change requires only a lid member and a new cap member as new parts, and others can be used as they are, with the water pool part integrated type being used as it is. The production cost can be greatly reduced as compared with the case where all are produced.
[0051]
Claim 2 In the invention according to claim 1, the filter member can be attached to and detached from the case from above, and the seal member is attached only to the upper part of the filter member. 1 In addition to the effects of the invention, the filter member can be easily removed, so that the replacement work of the filter member can be performed easily and in a short time, and the production cost can be reduced accordingly. Moreover, since the possibility that the seal member is worn when the filter member is removed is reduced and the seal member can be used again, the cost of parts can be reduced accordingly.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a water reservoir integrated diesel filter according to the present invention.
FIG. 2 is a cross-sectional view showing a state before assembly of a water reservoir integrated diesel filter according to the present invention.
FIG. 3 is a cross-sectional view showing a filtration portion of a separated water reservoir type diesel filter according to the present invention.
FIG. 4 is a cross-sectional view showing a water reservoir portion of a water reservoir separation type diesel filter according to the present invention.
FIG. 5 is a fuel system diagram incorporating a water reservoir integrated diesel filter.
FIG. 6 is a cross-sectional view of a conventional water reservoir integrated diesel filter.
FIG. 7 is a fuel system diagram incorporating a water pool separation type diesel filter.
[Explanation of symbols]
1 ... Injection pump 2 ... Common rail
3 ... Injector 4 ... Fuel tank
5 ... Diesel filter with integrated water reservoir
5a: Cap member 5b: Filtration part
5c ... Water reservoir 10 ... Diesel filter
10a ... Filtration part 10b ... Water reservoir
11a: Filtration case 11b: Reservoir case
12: Cap member 12a: Lower end of the cap
12b ... Inlet 12c ... Discharge port
12d: supply pipe mounting portion 12e: discharge pipe mounting portion
12f ... First check valve 12g ... Second check valve
13, 52 ... Fuel supply pipes 13a, 14a, 21 ... Packing
14, 53 ... Fuel discharge pipe 15 ... Hand pump
15a ... Pump case 15b ... Plunger
15c ... Spring 15d ... Lid
15e, 37, 38, 42, 54 ... Flange
16 ... filtering member 17 ... element
18 ... Fuel passage 18a ... Upper end protrusion
19 ... Element holding member 20 ... Sealing member
22 ... Screw 23 ... Member
24 ... Ring-shaped member 25 ... Upper space
26, 43 ... Stopper portion 27, 44 ... Lower space
28 ... Level switch 29 ... Shaft member
29a ... Stopper 30 ... Float
31 ... Magnet 32 ... Switch part
33 ... Lead wire 34 ... Drain cock
35 ... Discharge passage 36 ... Separated water
40 ... filter 41 ... lid member
50 ... Water reservoir 51 ... Cap member

Claims (2)

外殻を形成するケースと、該ケースの開口部に取り付けられる第1のキャップ部材と、前記ケース内に収納され燃料中の異物を濾過する濾過部材を有する濾過部と、前記ケース内に形成され分離された燃料中の水を貯留する水溜め部と、上方が開口された皿形状を呈し前記水溜め部より高さの低い蓋部材と、下方が開口し燃料供給管及び燃料排出管を有する第2のキャップ部材とを有、前記濾過部と前記水溜め部とそれぞれ別体に形成され、前記第1のキャップ部材と前記濾過部と前記水溜め部とを一体に組み合わせた一体型としての使用と、前記第1のキャップ部材と前記濾過部と前記蓋部材とを一体に組み合わせたものと、前記第2のキャップ部材と前記水溜め部とを一体に組み合わせたものとの分離型としての使用とを可能にしてなることを特徴とするディーゼルフィルタ。A case that forms an outer shell, a first cap member that is attached to the opening of the case, a filtration part that has a filtration member that is housed in the case and filters out foreign matters in the fuel, and is formed in the case. A water reservoir for storing the water in the separated fuel, a lid member having an open top and a lower height than the water reservoir, and a fuel supply pipe and a fuel discharge pipe open at the bottom have a second cap member, wherein is filtered portion and formed separately from each said water reservoir, integral with combined integrally with said first cap member and the filtration part and the water reservoir And a separate type of the first cap member, the filtering portion, and the lid member integrally combined, and the second cap member and the water reservoir portion integrally combined. And can be used as Diesel filter, characterized in that that. 前記濾過部材を前記ケースに対し上方より脱着可能にするとともに、前記濾過部材の上方部にのみシール部材を取り付けることを特徴とする請求項1記載のディーゼルフィルタ。Wherein the filter member as well as to removable from the upper to the case, according to claim 1 Symbol mounting of the diesel filter is characterized by mounting the sealing member only in the upper part of the filter member.
JP2002193670A 2002-04-03 2002-07-02 Diesel filter Expired - Fee Related JP4000018B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2002193670A JP4000018B2 (en) 2002-07-02 2002-07-02 Diesel filter
DE10315052A DE10315052A1 (en) 2002-04-03 2003-04-02 Fuel supply system has diesel filter with filtering device accommodated in housing, and displacement registering sensor set to predetermined range and installed on outflow side of filtering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002193670A JP4000018B2 (en) 2002-07-02 2002-07-02 Diesel filter

Publications (2)

Publication Number Publication Date
JP2004036460A JP2004036460A (en) 2004-02-05
JP4000018B2 true JP4000018B2 (en) 2007-10-31

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Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002193670A Expired - Fee Related JP4000018B2 (en) 2002-04-03 2002-07-02 Diesel filter

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Publication number Priority date Publication date Assignee Title
JP4631891B2 (en) * 2007-09-21 2011-02-16 株式会社デンソー Fuel filtration device

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