1326739 (1) 九、發明說明 【發明所屬之技術領域】 本發明是關於用來將燃料供應給內燃機的燃燒室之燃 料噴射系統、及適用於該燃料系統之燃料噴射閥裝置。 【先前技術】 過去的燃料噴射閥裝置係由具備有具有朝向內燃機的 燃燒室噴射燃料的噴射口之噴嘴部，並且內部設有開閉前 述噴射口之閥體、驅動該閥體的開閉之驅動部以及使燃料 流通之流路之殻體所構成。 這種燃料噴射閥裝置的一個例子爲在日本專利文獻1 中所記載之用來保持將燃料出口側端部裝配在引擎之吸氣 路構成體的裝配孔之燃料噴射閥裝置之燃料噴射閥裝置保 持裝置’該燃料噴射閥裝置保持裝置的技術上思想係利用 被形成在從前述吸氣路構成體的外面開始豎起的拖架之固 定支架’將嵌合在燃料入口側端部的外周來連接燃料軟管 和燃料噴射閥間之接頭罩予以保持，藉由這種構成來達到 削減零件件數或降低成本。 〔專利文獻1〕日本專利特開2003 - 49740號公報 【發明內容】 <發明所欲解決之課題> 本發明係與前述的技術上思想相關連，其目的是提供 能夠符合要設置在更加狹窄的場地或被連接之燃料軟管的 -4- (2) (2)1326739 特性之燃料噴射系統、及使適用於該燃料噴射系統之燃料 噴射閥裝置的安裝性或維修性更加提高，並且還可以達到 削減零件件數或小型化和降低成本之燃料噴射系統及適用 於該燃料系統之燃料噴射閥裝置。 <用以解決課題之手段> 本發明的燃料噴射系統，其特徵爲：具備有：燃料軟 管、及其中一方的端部被一體連結到前述燃料軟管之燃料 供應管、及具備設有被連接到前述燃料供應管另一方的端 部’用來將從燃料槽經由燃料軟管所導入的燃料，經由連 接管供應到內燃機的燃燒室之噴射口的噴嘴部之燃料噴射 閥裝置'及與前述燃燒室相連通之吸氣通路；前述噴嘴部 面對前述吸氣通路來進行裝配。 依據這種構成’使用與燃料軟管一體連接之燃料供應 管’將來自燃料槽的燃料’經由燃料噴射閥裝置，供應到 燃料室的情況，很容易就可以將燃料供應管連接到燃料噴 射閥裝置。因而’提高燃料供應管及燃料噴射閥裝置的安 裝性或維修性。另外，安裝到燃料噴射閥裝置的吸氣通路 的構造被簡略化’故能夠削減燃料噴射系統的零件件數或 小型化和降低生產成本。 另外’如同上述的燃料噴射系統中，前述燃料噴射閥 裝置具備：設有將經由前述連接管所流入的燃料，供應到 前述噴射口之流路，並且在前述流路的軸方向上之其中一 方的端部設置前述連接管’在另一方的端部則設置前述噴 -5- (3) 1326739 嘴部之殼體部；在前述燃料供應管或是前述殼體 緣部’並且經由前述凸緣部，前述燃料噴射閥裝 在前述吸氣管，則可以既簡單又確實地將燃料噴 固定在前述吸氣管。另外，因可以將連接燃料供 到這方式所被固定之燃料噴射閥裝置，所以更加 料噴射系統之各零件的安裝性或維修性。 進而，利用樹脂置材料來構成前述燃料軟管 料供應管’可以大幅抑制因燃料或熱等造成的劣 ’使用這種樹脂製材料的燃料軟管的情況，前述 系統，燃料供應管及連接管很容易就能夠連接， 就可以將燃料供應管連接到燃料噴射閥裝置，又 安裝性或維修性高度。 另外’前述燃料軟管與前述燃料供應管最好 入來一體連接。另外，前述燃料供應管與前述燃 裝置的前述連接管係拆裝自如地構成，則進一步 噴射系統的安裝性或維修性。 本發明的燃料噴射閥裝置’其特徵爲具備有 其中一方的端部被一體連接到燃料軟管之燃料供 一方的端部之連接管、及設有用來將從燃料槽經 料供應管利用前述連接管所導入之燃料，供應到 燃燒室之噴射口’且被裝配在與前述燃燒室相連 管之噴嘴部。 依據适種構成’使用與燃料軟管一·體連結之 管的情況’燃料供應管與燃料噴射閥裝置很容易 部設置凸 置被固定 射閥裝置 應管連接 提高該燃 及前述燃 化。另外 燃料噴射 故很容易 可以確保 是利用壓 料噴射閥 提高燃料 =連接到 應管的另 由前述燃 內燃機的 通之吸氣 燃料供應 就可以連 -6- (4) 1326739 接，提高燃料噴射閥裝置的安裝性或維修性。另外，燃料 噴射閥裝置的安裝構造被簡單化，故能夠削減零件件數或 小型化。 另外，前述燃料噴射閥裝置具備，設有將經由前述連 接管流入之燃料供應到前述噴射口之流路，並且在前述流 路的軸方向上之其中一方的端部設置前述連接管，在另一 方的端部則設置前述噴嘴部之殼體部；在前述殼體部，設 有用來將前述燃料噴射閥裝置固定在前述吸氣管之凸緣部 ，是一種理想的用來進一步提高燃料噴射閥裝置的安裝性 〇 進而’前述連接管係與前述燃料供應管拆裝自如地構 成’則再進一步提高燃料噴射閥裝置的安裝性或維修性。 【實施方式】 以下’根據本發明的燃料噴射系統與適用於該燃料噴 ® 射系統之燃料噴射閥裝置的關係，列舉出適當的實施形態 ’參考附圖來詳細說明本發明的燃料噴射系統。 參考第1〜第4圖來說明本發明的第1實施形態。第1 圖爲表示本發明的第1實施形態之燃料噴射系統l〇a的一 部分短缺之縱向剖面圖。 如第1圖所示’燃料噴射系統1〇a係由外壁面形成有 裝配孔12之吸氣管14、及被固定在該吸氣管14，用來將 燃料供應給內燃機的燃燒室（未圖示）之燃料噴射閥裝置 16、及與該燃料噴射閥裝置16相連接，將從儲存有用來 (5) (5)1326739 供應給內燃機的燃燒室的燃料之燃料槽（未圖示），經由 燃料軟管17供應之燃料供應到燃料噴射閥裝置16之燃料 供應管1 8所構成。 另外，吸氣管14具有與前述內燃機的燃燒室相連通 之吸氣流路20，其功能爲作爲吸氣通路。在吸氣流路20 內軸支將該吸氣流路20予以開閉之凹槽閥22。 裝配孔12係以來自燃料噴射閥裝置16的噴嘴部30 之燃料，噴射到比凹槽閥22還要更下游側的吸氣流路20 內的方式形成。此外，在比裝配孔12還要更上游側的吸 氣管14之被隆出的外壁面，形成有栓鎖後述的螺栓24之 螺紋部26。一方面’在裝配孔12的內周面呈環狀設置有 溝部13’在該溝部13例如設置〇封圏來作爲密封構件15 。因此’密封構件15與噴嘴部3〇的外周面相抵接，藉此 來防止燃料從裝配孔1 2與噴嘴部3 0的間隙漏出。 燃料噴射閥裝置16具有略呈圓筒形狀的殼體部28、 及插入到裝配孔12側的端部之圓筒狀的噴嘴部3〇、及突 出設置在與前述噴嘴部30相反側的端部之連接管32。 噴嘴部30係將對吸氣流路20內噴射燃料之噴射口 34 裝備在前端’並且在其內部具有將該噴射口 34予以開閉 之閥體36。連接管32具有被形成在其內部且使從燃料供 應巨丨8所流入的燃料流通之流路38、及呈環狀形成在連 接吕32的軸方向上之中央部附近的外周面之擴徑部4〇。 流路38係貫穿殼體部28的內部來與噴嘴部3〇的噴射口 34相連通。從被形成在與殻體部28側相反側的端部之連 (6) (6)1326739 接管32的開口部42 ’燃料導入到該流路3 8。另外，擴徑 部40係當連接管32插入到後述之燃料供應管is的接頭 44進行連接，則與接頭44的卡止爪56相卡合，達到阻止 接頭44脫離連接管32的作用，詳細情形於後述。 進而，在突出設置殻體部28的連接管32之側的端部 ’設置用來將燃料噴射閥裝置16固定在吸氣管14之凸緣 部48。在凸緣部48形成有螺栓插入孔50，經由該螺栓插 入孔50’螺栓24旋轉鎖入螺紋部26，藉此燃料噴射閥裝 置16被固定在吸氣管14(參考第1圖和第3圖）。 此外，在殼體部28的內部收納電磁致動器（未圖示 )。該電磁致動器係例如具備有合成樹脂製的線圏軸等， 經由連桿（未圖示），在軸方向上進退驅動噴嘴部30的 閥體36。因而，在殼體部28安裝用來供電給前述電磁致 動器之供電用連接器52，供電用連接器52則連接到驅動 手段（未圖示）。 燃料供應管18係與燃料軟管17 —體連結，由接頭44 及扣具45所構成。在被形成在接頭44其中一方的端部之 附階段的形狀的燃料軟管插入部46壓入燃料軟管17而被 一體地外嵌連接。另外，在接頭44另一方的端部設置前 述扣具45，接頭44與燃料噴射閥裝置16的連接管32經 由扣具45拆裝自如地加以連接。扣具45係在接頭44的 孔部58卡合突起部57，在軸方向上可進退地加以設置。 另外’在燃料軟管插入部46的內部，形成有使從燃料軟 管1 7所供應的燃料流往燃料噴射閥裝置1 6的流路3 8。 -9 - (7) (7)1326739 此外’燃料供應管1 8，即是接頭44和扣具4 5例如由 PA12(聚醯胺12)等的樹脂製材料所構成較佳。 然後’將與燃料軟管17 —體連結著之燃料供應管18 連接到燃料噴射閥裝置16時，經由前述扣具45，燃料噴 射閥裝置16的連接管32插入到接頭44的內部，該連接 管32的擴徑部40卡合到扣具45的卡止爪56。進而，此 時形成在扣具45的中央部附近之突起部57在孔部58抵 接到側面5 8 a來加以卡合。 因而’當燃料噴射閥裝置16與燃料供應管18相連接 ’則利用擴徑部40與卡止爪56以及突起部57與孔部58 的卡合作用’扣具45被固定，確實地阻止接頭44從連接 管32脫離。另外’被形成在連接管32之半球狀的突起60 卡合到被形成在接頭44的內周面之凹部，藉此來卡合固 定燃料供應管18與連接管32的外圍。 此外，連接管32插入到接頭44內的情況，連接管32 之前端周邊的外周面，抵接到沿著接頭44的內周面所設 置的2個密封構件64，故接頭44的內部之液密性被適切 地保持。這樣的密封構件64適合使用〇封圈。 另外’燃料軟管17係由具有可撓性的樹脂製材料所 組成，裝設到前述內燃機的燃料槽與燃料噴射閥裝置16 之間時，其路徑可自由變化。 參考第2圖來詳細敘述該燃料軟管17。第2A圖爲本 實施形態的燃料軟管17之剖面圖。第2B圖爲表示在將燃 料軟管17壓入接頭44的燃料軟管插入部46進行連接之 -10- (8) 1326739 前’該燃料軟管1 7被擴徑的狀態之剖面圖。 如第2 A圖所示’燃料軟管1 7係例如由以壁 mm且內徑2.5 mm的pai2(聚醯胺12)所組成；^ 、及呈層狀設置在該管17a的內側，壁厚〇2 mml (四氟乙烯一乙烯共聚合物）所組成之內管l7b、 要防止紫外線、強酸以及削片等而使管17a受到保 置’以壁厚1·〇 mm的EPDM (乙烯—丙烯橡膠） 之保護管17c所構成。然後，在將這燃料軟管17 接頭44的燃料軟管插入部46時，如第2B圖所示 入燃料軟管插入部46的端部開始擴徑特定長度L ，形成擴徑部6 6。 燃料軟管17係使用如同上述的樹脂製材料， 去被廣泛使用的橡膠材料還要更能夠大幅抑制因熱 造成的劣化。 一方面，樹脂製材料一般彈性小於前述橡膠材 外’若干加大燃料軟管插入部46的外徑來大於燃 17的內徑’例如以管I7a的內徑2.5 mm程度來構 合用來提高燃料軟管17與燃料軟管插入部46的密 因此，本實施形態的燃料軟管17，預先將從燃料尊 的端部開始特定長度L的部分予以擴徑來事先形成 66’藉此很容易就可以將燃料軟管插入部46插入 軟管17’又可以一面提高燃料軟管17與燃料軟管 46的密合性，一面使這些連接作業的效率提高。 另外’如第1圖所示，在燃料軟管插入部46 厚 0.55 :管 17a ETFE 及爲了 護所設 所組成 壓入到 ，從插 的部分 故比過 或燃料 料。另 料軟管 成，適 合性。 欠管17 擴徑部 到燃料 插入部 的外周 -11 - (9) (9)1326739 面呈環狀設置溝部68’在該溝部68例如裝設〇封圏來作 爲密封構件69»因而’燃料軟管17與燃料軟管插入部46 的密合性更加提高，並且可以防止因長時間婦動造成燃料 軟管17從燃料軟管插入部46脫離、或燃料軟管17與燃 料軟管插入部46之間的液體洩漏等。 其次’參考第3圖來說明以上方式所構成之燃料噴射 系統l〇a中將燃料噴射閥裝置16和燃料供應管18連接到 吸氣管14的順序。第3圖爲用來說明燃料噴射系統10a 之各構成零件的連接順序之一部分短缺的縱向剖面圖。此 外，此情況，燃料軟管17與燃料供應管18的接頭44預 先被連結，形成爲一體的構成。 首先，將燃料噴射閥裝置16連接到吸氣管14。此情 況’在吸氣管14的裝配孔12中插入燃料噴射閥裝置16 的噴嘴部30，並且經由被形成在凸緣部48之螺栓插入孔 5〇，螺栓24則旋轉鎖入螺紋部26。因而，燃料噴射閥裝 置16既容易且確實地固定在吸氣管14。另外，形成在噴 嘴部30的前端之噴射口 34指向吸氣流路20內，藉此能 夠從燃料噴射閥裝置16將燃料噴射到吸氣流路20內。 其次，如同前述，將燃料供應管18連接到被固定在 吸氣管14之燃料噴射閥裝置16的連接管32。此其況，燃 料噴射閥裝置16固定在吸氣管14，故經由扣具45很容易 就可以將連接管32確實地插入到接頭44的內部。 另外，此時連接管32的擴徑部40與扣具45的卡止 爪56相卡合，進一步突起部57與孔部58的側面58a相 -12- (10) (10)1326739 卡合°因而’扣具45被固定，阻止接頭44脫離連接管32 ’故燃料噴射閥裝置16更加確實地連接燃料供應管18。 述’本實施形態的燃料噴射系統1〇a中，其構 成爲：將燃料噴射閥裝置16固定在吸氣管14，將燃料供 應管18的接頭44連接到被突出設置在燃料噴射閥裝置16 之連接管32。因而，上述過去的構成所用的固定支架則不 必設置’可以削減零件件數，又能夠小型化及降低成本。 另外’燃料軟管1 7採用樹脂製材料的情況，不必如 同上述經過將燃料軟管17壓入到燃料軟管插入部46進行 連結的作業’例如搭載有內燃機（未圖示）之二輪車或四 輪車’實施這壓入作業，對於作業效率上並不理想。 因此’本實施形態中，事先將燃料軟管17與燃料供 應管18 —體連結，並事先將燃料噴射閥裝置16固定在吸 氣管14’故很容易就能夠將燃料供應管is連接到連接管 32。因而’燃料軟管17採用樹脂製材料的情況，也很容 易就可以進行燃料噴射系統l〇a的連接，又可以使作業效 率提高’並且可以大幅抑制因燃料軟管17的熱或燃料造 成的劣化。另外，利用接頭44，很容易就可以從燃料噴射 閥裝置10上拆裝燃料供應管18，故提高燃料噴射閥裝置 16的安裝性或維修性，且提高燃料供應管18的配管作業 效率。 其次，參考第5圖和第6圖來說明本發明的第2實施 形態。第5圖爲表示本發明的第2實施形態之燃料噴射系 統10b的一部分短缺之縱向剖面圖。此外，第5圖中，與 -13- (11) (11)1326739 第1〜4圖所示的參考圖號相同的參考圖號，表示相同或是 同樣的構成，因而視同有相同或是同樣的功能和效果，其 詳細說明則省略，以下也是同樣。 本實施形態的燃料噴射系統1 Ob與上述實施形態的燃 料噴射系統10a作比較’相異點爲裝備有燃料噴射閥裝置 72來取代燃料噴射閥裝置16。然後，燃料噴射閥裝置72 與燃料噴射閥裝置1 6作比較’相異點爲裝備有殼體部74 來取代殼體部2 8。 殼體部74係由略圓形狀所形成，在上述殼體部28設 有凸緣部48的部分附近的外周面形成有環狀的溝部76。 然後由薄板所構成，具有鉤具部81且設有螺栓插入孔78 之凸緣板80(參考第6A圖），以在第6圖所示的方向上 夾入溝部76的方式2片相重疊來加以使用，這兩螺栓插 入孔78穿過螺栓24來鎖緊結合，燃料噴射閥裝置72則 被固定在吸氣管14。 此外，最好是使用1片的凸緣板80，經由黏接或熔接 等來將該凸緣板80固定在殻體部74的溝部76，使殼體部 74與凸緣板80成爲一體所構成。 以上，依據本實施形態的燃料噴射系統1 Ob，利用凸 緣板80來將燃料噴射閥裝置72固定在吸氣管14，故可以 削減凸緣部48,燃料噴射閥裝置72的形狀被簡單化，且 可以降低該燃料噴射閥裝置16的製造成本。另外，僅從 螺紋部26將螺栓24若干鬆開，就可以將凸緣板80與殼 體部74分開，故更加提高維修性。 -14 - (12) 1326739 其次，參考第7圖來說明本發明的第3實施形態。第 7圖爲表示本發明的第3實施形態之燃料噴射系統i〇c的 一部分短缺之縱向剖面圖。 本實施形態的燃料噴射系統l〇c與上述實施形態的燃 料噴射系統l〇a作比較，相異點爲裝備有燃料噴射閥裝置 82來取代燃料噴射閥裝置16’並且裝備有燃料供應管84 來取代燃料供應管18。然後，燃料噴射閥裝置82與燃料 • 噴射閥裝置16作比較，相異點爲裝備有沒有凸緣部48的 略圓筒形狀的殼體部86。另外’燃料供應管84與燃料供 應管18作比較，相異點爲裝備有接頭90來取代接頭44。 在接頭90的孔部58周邊形成有具有螺栓插入孔92 之凸緣部94。該凸緣部94爲與上述燃料噴射閥裝置16的 凸緣部48大致相同的形狀。 因而，本實施形態中’將燃料噴射閥裝置82的噴嘴 部60裝配在吸氣管14的裝配孔12之後，燃料供應管84 ^ 與連接管32連接時，經由凸緣部94的螺栓插入孔92，利 用螺栓24將燃料供應管84和燃料噴射閥裝置84鎖緊固 定。 以上’依據本實施形態的燃料噴射系統l〇c，以利用 被形成在接頭90之凸緣部94’將燃料供應管84和燃料噴 射閥裝置82鎖緊固定在吸氣管14的方式構成。因而，對 於燃料供應管84與燃料噴射閥裝置82的連接部，可以防 止燃料供應管84發生搖動或晃動，例如可以省略將燃料 軟管17固定在前述內燃機的特定位置之作業性。進而， -15- (13) 1326739 可以削減凸緣部48，燃料噴射閥裝置82的形狀被簡單化 ’可以更加降低燃料噴射閥裝置82的製造成本。 以上’雖利用上述各實施形態來說明了本發明，但本 發明並不侷限於此’只要不脫離本發明的要旨，當然能夠 採用各種的構成。 例如’燃料軟管1 7若是符合使汽油等的燃料流通之 燃料軟管所要求的特性的話則沒有特別的限定，不過已利 • 用上述實施形態說明過，最好是由管17a、內管17b以及 保護管1 7 c所組成。另外，燃料軟管1 7和燃料供應管1 8 、84的材質’若爲樹脂製材料的話則沒有特別的限定，不 過最好是使用聚醯胺系樹脂、氟系樹脂等。 另外’燃料噴射閥裝置16裝配在在吸氣管14，但並 不侷限於此’也可以以燃料噴射閥裝置16的噴嘴頭30指 向對上述燃燒室的吸氣通路的方式，直接安裝在該燃燒室 的汽缸蓋等。 【圖式簡單說明】 第1圖爲表示本發明的第1實施形態之燃料噴射系統 的一部分短缺之縱向剖面圖》 第2A圖爲前述本實施形態的燃料軟管之剖面圖；第 2B圖爲表示前述實施形態之燃料軟管被擴徑的狀態之剖 面圖。 第3圖爲用來說明前述實施形態的燃料噴射系統之各 構成零件的連接順序之一部分短缺的縱向剖面圖。 -16- (14) 1326739 第4圖爲第3圖中的IV _ IV線之剖面圖。 第5圖爲本發明的第2實施形態之燃料噴射系統的一 部分短缺之縱向剖面圖。 .第6A圖爲前述實施形態的凸緣板之平面圖；第6B圖 爲表示使用2片的前述凸緣板來夾入殼體部的溝部的樣子 之說明圖；第6C圖爲表示使用2片的前述凸緣板來夾入 殻體部的溝部的樣子之說明圖。 ^ 第7圖爲表不本發明的第3實施形態之燃料噴射系統 的一部分短缺之縱向剖面圖。 〔發明效果〕 依據本發明’可以使燃料噴射閥裝置用在燃料噴射系 統的安裝性或維修性提高。另外，依據本發明，可以削減 燃料噴射閥裝置和燃料噴射系統的零件件數，又能夠小型 化和降低生產成本。 【主要元件符號說明】 l〇a、l〇b、10c :燃料噴射系統 1 2 :裝配孔 14 :吸氣管 16、72 ' 82 :燃料噴射閥裝置 :燃料軟管 18、84 :燃料供應管 2〇 :吸氣流路 -17- (15) 1326739 22 :凹槽閥 24 :螺栓 26 :螺紋部 32 :連接管 3 4 :噴射口 3 6 :閥體 3 8、5 4 :流路 φ 4 4、9 0 :接頭 46 :燃料軟管插入部 48 ' 94 :凸緣部 50、78、92:螺栓插入孔 80 :凸緣板 -181326739 (1) Description of the Invention [Technical Field] The present invention relates to a fuel injection system for supplying fuel to a combustion chamber of an internal combustion engine, and a fuel injection valve device suitable for the fuel system. [Prior Art] A conventional fuel injection valve device includes a nozzle portion having an injection port for injecting fuel toward a combustion chamber of an internal combustion engine, and a valve body that opens and closes the injection port and a drive portion that opens and closes the valve body And a casing that allows the flow path of the fuel to flow. An example of such a fuel injection valve device is a fuel injection valve device for holding a fuel injection valve device for fitting a fuel outlet side end portion to a fitting hole of an intake passage constituting body of an engine described in Japanese Patent Laid-Open Publication No. Hei. The technical idea of the holding device 'the fuel injection valve device holding device' is to be fitted to the outer periphery of the fuel inlet side end portion by a fixing bracket formed by a carriage that is erected from the outer surface of the air intake path constituting body. The joint cover between the fuel hose and the fuel injection valve is held, and the number of parts is reduced or the cost is reduced by this configuration. [Patent Document 1] Japanese Patent Laid-Open No. 2003-49740 SUMMARY OF THE INVENTION <Problems to be Solved by the Invention> The present invention is related to the aforementioned technical idea, and an object thereof is to provide a compliance that can be set to be more a fuel injection system of a -4- (2) (2) 1326739 characteristic of a narrow site or a connected fuel hose, and an increase in the installability or maintainability of a fuel injection valve device suitable for the fuel injection system, and It is also possible to achieve a fuel injection system that reduces the number of parts or miniaturization and reduces costs, and a fuel injection valve device suitable for the fuel system. <Means for Solving the Problem> The fuel injection system of the present invention includes: a fuel hose, and a fuel supply pipe in which one end portion is integrally coupled to the fuel hose, and is provided There is an end portion of the fuel supply pipe connected to the fuel injection valve device for supplying the fuel introduced from the fuel tank via the fuel hose to the nozzle portion of the injection port of the combustion chamber of the internal combustion engine via the connection pipe. And an intake passage communicating with the combustion chamber; the nozzle portion is assembled to face the intake passage. According to this configuration, it is easy to connect the fuel supply pipe to the fuel injection valve by using the fuel supply pipe integrally connected to the fuel hose to supply the fuel from the fuel tank to the fuel chamber via the fuel injection valve device. Device. Therefore, the installation or maintainability of the fuel supply pipe and the fuel injection valve device is improved. Further, the structure of the intake passage attached to the fuel injection valve device is simplified. Therefore, the number of parts of the fuel injection system can be reduced or the size can be reduced and the production cost can be reduced. In the above-described fuel injection system, the fuel injection valve device includes a flow path that supplies fuel flowing through the connection pipe to the injection port, and one of the axial directions of the flow path. The end portion is provided with the aforementioned connecting pipe 'the other end portion is provided with the casing portion of the nozzle -5 - 3326739 mouth portion; at the aforementioned fuel supply pipe or the casing edge portion ' and via the aforementioned flange In the fuel injection valve, the fuel injection valve is attached to the intake pipe to fix the fuel to the intake pipe in a simple and reliable manner. Further, since the fuel to be connected can be supplied to the fuel injection valve device fixed in this manner, the mounting property or the maintainability of each component of the injection system can be improved. Further, the fuel hose supply pipe is configured by the resin material to sufficiently suppress the fuel hose using the resin material due to fuel or heat, and the system, the fuel supply pipe and the connecting pipe It is easy to connect, and the fuel supply pipe can be connected to the fuel injection valve device, which is also installable or maintainable. Further, the aforementioned fuel hose is preferably integrally connected to the aforementioned fuel supply pipe. Further, the fuel supply pipe and the connecting pipe of the burning device are detachably configured to further improve the mountability and maintainability of the injection system. A fuel injection valve device of the present invention is characterized in that it is provided with a connecting pipe having one end portion integrally connected to a fuel supply end portion of the fuel hose, and a connecting pipe for supplying the fuel supply pipe through the fuel tank The fuel introduced by the connecting pipe is supplied to the injection port of the combustion chamber and is fitted to the nozzle portion of the pipe connected to the aforementioned combustion chamber. According to the appropriate configuration, the case where the tube is connected to the fuel hose is used. The fuel supply pipe and the fuel injection valve device are easily provided with the projection being fixed. The injection valve device is connected to the pipe to improve the combustion and the aforementioned combustion. In addition, it is easy to ensure that the fuel is injected by the pressure injection valve. The fuel is connected to the pipe. The fuel supply to the internal combustion engine of the aforementioned internal combustion engine can be connected to the -6-(4) 1326739. Installation or maintainability of the device. Further, since the mounting structure of the fuel injection valve device is simplified, the number of parts or the size can be reduced. Further, the fuel injection valve device includes a flow path for supplying fuel flowing through the connection pipe to the injection port, and the connection pipe is provided at one of the end portions of the flow path in the axial direction. One end portion is provided with a casing portion of the nozzle portion, and the casing portion is provided with a flange portion for fixing the fuel injection valve device to the intake pipe, which is ideal for further improving fuel injection. Further, the mounting property of the valve device and the 'the above-described connecting pipe system and the fuel supply pipe are detachably assembled' further improve the mountability and maintainability of the fuel injection valve device. [Embodiment] Hereinafter, the relationship between the fuel injection system according to the present invention and the fuel injection valve device applied to the fuel injection system will be described in detail. The fuel injection system of the present invention will be described in detail with reference to the accompanying drawings. The first embodiment of the present invention will be described with reference to Figs. 1 to 4 . Fig. 1 is a longitudinal cross-sectional view showing a portion of the fuel injection system 10a according to the first embodiment of the present invention in a shortage. As shown in Fig. 1, a fuel injection system 1A is an intake pipe 14 having an assembly hole 12 formed in an outer wall surface, and is fixed to the intake pipe 14 for supplying fuel to a combustion chamber of the internal combustion engine (not a fuel injection valve device 16 and a fuel injection valve device 16 connected thereto, and a fuel tank (not shown) storing fuel for supplying (5) (5) 1326739 to a combustion chamber of the internal combustion engine, The fuel supplied via the fuel hose 17 is supplied to the fuel supply pipe 18 of the fuel injection valve device 16. Further, the intake pipe 14 has an intake air passage 20 communicating with the combustion chamber of the aforementioned internal combustion engine, and functions as an intake passage. A groove valve 22 that opens and closes the suction flow path 20 is axially supported in the suction flow path 20. The fitting hole 12 is formed by injecting fuel from the nozzle portion 30 of the fuel injection valve device 16 into the suction flow path 20 on the downstream side of the groove valve 22. Further, a threaded portion 26 of a bolt 24 to be described later is formed on the outer wall surface of the suction pipe 14 which is further upstream than the fitting hole 12. On the other hand, a groove portion 13' is formed in an annular shape on the inner circumferential surface of the fitting hole 12, and a sealing member 15 is provided as the sealing member 15 in the groove portion 13, for example. Therefore, the sealing member 15 abuts against the outer peripheral surface of the nozzle portion 3A, thereby preventing fuel from leaking from the gap between the fitting hole 12 and the nozzle portion 30. The fuel injection valve device 16 has a casing portion 28 having a substantially cylindrical shape, a cylindrical nozzle portion 3A that is inserted into an end portion on the side of the fitting hole 12, and a tip that is protruded from the end opposite to the nozzle portion 30. The connecting pipe 32 of the part. The nozzle portion 30 is provided with a valve body 36 for injecting fuel into the suction flow path 20 at the front end and having a valve body 36 for opening and closing the injection port 34 therein. The connecting pipe 32 has a flow path 38 formed therein to allow the fuel flowing in from the fuel supply manifold 8 to flow, and an outer diameter of the outer peripheral surface formed in the vicinity of the central portion in the axial direction of the connecting luer 32. Department 4〇. The flow path 38 penetrates the inside of the casing portion 28 to communicate with the injection port 34 of the nozzle portion 3A. The fuel is introduced into the flow path 38 from the opening 42' of the joint 32 formed by the end portion (6) (6) 1326739 formed on the side opposite to the side of the casing portion 28. Further, when the connecting pipe 32 is inserted into the joint 44 of the fuel supply pipe is described later, the enlarged diameter portion 40 is engaged with the locking claw 56 of the joint 44 to prevent the joint 44 from coming off the connecting pipe 32. The situation will be described later. Further, an end portion ‘ on the side where the connecting pipe 32 of the casing portion 28 is provided is provided to fix the fuel injection valve device 16 to the flange portion 48 of the intake pipe 14. A bolt insertion hole 50 is formed in the flange portion 48, and the bolt 24 is rotationally locked into the screw portion 26 via the bolt insertion hole 50, whereby the fuel injection valve device 16 is fixed to the suction pipe 14 (refer to Figs. 1 and 3). Figure). Further, an electromagnetic actuator (not shown) is housed inside the casing portion 28. The electromagnetic actuator is provided with, for example, a reel shaft made of a synthetic resin, and the valve body 36 that drives the nozzle unit 30 forward and backward in the axial direction via a link (not shown). Therefore, the power supply connector 52 for supplying power to the electromagnetic actuator is attached to the casing portion 28, and the power supply connector 52 is connected to a driving means (not shown). The fuel supply pipe 18 is integrally connected to the fuel hose 17, and is composed of a joint 44 and a buckle 45. The fuel hose insertion portion 46 having the shape of the attachment stage formed at one of the ends of the joint 44 is press-fitted into the fuel hose 17 to be integrally and externally joined. Further, the above-described fastener 45 is provided at the other end of the joint 44, and the joint 44 and the connecting pipe 32 of the fuel injection valve device 16 are detachably connected via the fastener 45. The clip 45 is engaged with the projection 57 at the hole portion 58 of the joint 44, and is provided to be movable forward and backward in the axial direction. Further, inside the fuel hose insertion portion 46, a flow path 38 for allowing the fuel supplied from the fuel hose 17 to flow to the fuel injection valve device 16 is formed. -9 - (7) (7) 1326739 Further, the fuel supply pipe 18 is preferably made of a resin material such as PA12 (polyamide 12). Then, when the fuel supply pipe 18 connected to the fuel hose 17 is connected to the fuel injection valve device 16, the connection pipe 32 of the fuel injection valve device 16 is inserted into the inside of the joint 44 via the aforementioned fastener 45, the connection The enlarged diameter portion 40 of the tube 32 is engaged with the locking claw 56 of the clip 45. Further, at this time, the projection 57 formed in the vicinity of the center portion of the clip 45 is engaged with the hole portion 58 against the side surface 58a. Therefore, when the fuel injection valve device 16 is connected to the fuel supply pipe 18, the engaging portion 45 is fixed by the enlarged diameter portion 40 and the locking claw 56 and the projection portion 57 and the hole portion 58, and the joint is surely blocked. 44 is detached from the connecting pipe 32. Further, the hemispherical projection 60 formed in the connecting pipe 32 is engaged with the recess formed in the inner peripheral surface of the joint 44, whereby the fuel supply pipe 18 and the outer periphery of the connecting pipe 32 are engaged. Further, in the case where the connecting pipe 32 is inserted into the joint 44, the outer peripheral surface of the peripheral end of the connecting pipe 32 abuts against the two sealing members 64 provided along the inner peripheral surface of the joint 44, so that the inner liquid of the joint 44 The tightness is properly maintained. Such a sealing member 64 is suitable for use with a helium seal. Further, the fuel hose 17 is composed of a flexible resin material, and its path can be freely changed when it is installed between the fuel tank of the internal combustion engine and the fuel injection valve device 16. The fuel hose 17 will be described in detail with reference to FIG. Fig. 2A is a cross-sectional view showing the fuel hose 17 of the embodiment. Fig. 2B is a cross-sectional view showing a state in which the fuel hose 17 is expanded in diameter before the fuel hose insertion portion 46 that presses the fuel hose 17 into the joint 44 is connected to -10 (8) 1326739. As shown in Fig. 2A, the 'fuel hose 17' is composed of, for example, pai2 (polyamide 12) having a wall mm and an inner diameter of 2.5 mm; and is disposed in a layer on the inner side of the tube 17a. The inner tube l7b consisting of thick 〇 2 mml (tetrafluoroethylene-ethylene copolymer), to prevent ultraviolet rays, strong acid and chipping, etc., to ensure that the tube 17a is protected by EPDM (ethylene) with a wall thickness of 1·〇mm A protective tube 17c of propylene rubber). Then, when the fuel hose insertion portion 46 of the fuel hose 17 joint 44 is inserted, the end portion of the fuel hose insertion portion 46 is expanded to a specific length L as shown in Fig. 2B to form an enlarged diameter portion 66. The fuel hose 17 is made of a resin material as described above, and the rubber material which is widely used is more capable of greatly suppressing deterioration due to heat. On the one hand, the resin material is generally less elastic than the rubber material except that the outer diameter of the fuel hose insertion portion 46 is larger than the inner diameter of the fuel 17, for example, the inner diameter of the tube I7a is 2.5 mm to form a fuel. In the fuel hose 17 of the present embodiment, the fuel hose 17 of the present embodiment is expanded in advance by a predetermined length L from the end portion of the fuel to form 66' in advance. The fuel hose insertion portion 46 can be inserted into the hose 17', and the adhesion between the fuel hose 17 and the fuel hose 46 can be improved, and the efficiency of these connection operations can be improved. Further, as shown in Fig. 1, the fuel hose insertion portion 46 is 0.55 thick: the tube 17a ETFE and the composition for the protection device are pressed in, and the portion to be inserted is compared with the fuel material. The hose is made of a suitable material. The pipe 17 is expanded to the outer periphery of the fuel insertion portion -11 - (9) (9) 1326739 The groove portion 68' is annularly provided, and the groove portion 68 is provided with, for example, a sealing member 69 as a sealing member 69» The adhesion of the tube 17 to the fuel hose insertion portion 46 is further improved, and it is possible to prevent the fuel hose 17 from being detached from the fuel hose insertion portion 46 due to long-term mating, or the fuel hose 17 and the fuel hose insertion portion 46. The liquid leaks between and so on. Next, the order in which the fuel injection valve device 16 and the fuel supply pipe 18 are connected to the intake pipe 14 in the fuel injection system 10a constituted by the above mode will be described with reference to Fig. 3. Fig. 3 is a longitudinal cross-sectional view for explaining a shortage of a part of the connection order of the constituent components of the fuel injection system 10a. Further, in this case, the fuel hose 17 and the joint 44 of the fuel supply pipe 18 are connected in advance to form an integral structure. First, the fuel injection valve device 16 is connected to the intake pipe 14. In this case, the nozzle portion 30 of the fuel injection valve device 16 is inserted into the fitting hole 12 of the intake pipe 14, and the bolt 24 is rotationally locked into the screw portion 26 via the bolt insertion hole 5'' formed in the flange portion 48. Thus, the fuel injection valve device 16 is easily and surely fixed to the intake pipe 14. Further, the injection port 34 formed at the tip end of the nozzle portion 30 is directed into the intake air passage 20, whereby fuel can be injected from the fuel injection valve device 16 into the intake air passage 20. Next, as in the foregoing, the fuel supply pipe 18 is connected to the connecting pipe 32 of the fuel injection valve device 16 fixed to the intake pipe 14. In this case, the fuel injection valve device 16 is fixed to the intake pipe 14, so that the connecting pipe 32 can be easily inserted into the inside of the joint 44 via the fastener 45. Further, at this time, the enlarged diameter portion 40 of the connecting pipe 32 is engaged with the locking claw 56 of the buckle 45, and the protruding portion 57 is engaged with the side surface 58a of the hole portion 58 by -12-(10) (10) 1326739. Thus, the 'clamp 45 is fixed to prevent the joint 44 from coming off the connecting pipe 32' so that the fuel injection valve device 16 more reliably connects the fuel supply pipe 18. In the fuel injection system 1A of the present embodiment, the fuel injection valve device 16 is fixed to the intake pipe 14, and the joint 44 of the fuel supply pipe 18 is connected to the fuel injection valve device 16 which is protruded. The connecting tube 32. Therefore, the fixing bracket used in the above-described conventional configuration does not need to be provided. The number of parts can be reduced, and the size can be reduced and the cost can be reduced. In the case where the fuel hose 17 is made of a resin material, it is not necessary to press the fuel hose 17 into the fuel hose insertion portion 46 as described above. For example, a two-wheeled vehicle or four equipped with an internal combustion engine (not shown) is mounted. The wheeled vehicle's implementation of this press-in operation is not ideal for work efficiency. Therefore, in the present embodiment, the fuel hose 17 is connected to the fuel supply pipe 18 in advance, and the fuel injection valve device 16 is fixed to the intake pipe 14' in advance, so that the fuel supply pipe is connected to the connection easily. Tube 32. Therefore, in the case where the fuel hose 17 is made of a resin material, the connection of the fuel injection system 10a can be easily performed, and the work efficiency can be improved', and the heat or fuel due to the fuel hose 17 can be greatly suppressed. Deterioration. Further, the fuel supply pipe 18 can be easily detached from the fuel injection valve device 10 by the joint 44, so that the mountability or maintainability of the fuel injection valve device 16 is improved, and the piping work efficiency of the fuel supply pipe 18 is improved. Next, a second embodiment of the present invention will be described with reference to Figs. 5 and 6. Fig. 5 is a longitudinal cross-sectional view showing a part of the fuel injection system 10b according to the second embodiment of the present invention in a shortage. In addition, in FIG. 5, the same reference numerals as those of the reference numerals shown in FIGS. 1 to 4 of 13-(11) (11) 1326739 indicate the same or the same configuration, and thus are regarded as the same or The same functions and effects are omitted, and the following is also the same. The fuel injection system 1 Ob of the present embodiment is compared with the fuel injection system 10a of the above-described embodiment. The difference is that the fuel injection valve device 72 is provided instead of the fuel injection valve device 16. Then, the fuel injection valve device 72 is compared with the fuel injection valve device 16. The difference is that the housing portion 74 is provided instead of the housing portion 28. The casing portion 74 is formed in a substantially circular shape, and an annular groove portion 76 is formed on the outer peripheral surface of the portion of the casing portion 28 where the flange portion 48 is provided. Then, the flange plate 80 having the hook portion 81 and having the bolt insertion hole 78 (refer to FIG. 6A) is formed of a thin plate, and the two pieces are overlapped in such a manner that the groove portion 76 is sandwiched in the direction shown in FIG. To be used, the two bolt insertion holes 78 are screwed through the bolts 24, and the fuel injection valve device 72 is fixed to the suction pipe 14. Further, it is preferable to use one flange plate 80 to fix the flange plate 80 to the groove portion 76 of the casing portion 74 via adhesion or welding, and to integrate the casing portion 74 with the flange plate 80. Composition. As described above, according to the fuel injection system 1 Ob of the present embodiment, the fuel injection valve device 72 is fixed to the intake pipe 14 by the flange plate 80. Therefore, the flange portion 48 can be reduced, and the shape of the fuel injection valve device 72 can be simplified. And the manufacturing cost of the fuel injection valve device 16 can be reduced. Further, by simply loosening the bolts 24 from the threaded portion 26, the flange plate 80 can be separated from the casing portion 74, so that the maintainability is further improved. -14 - (12) 1326739 Next, a third embodiment of the present invention will be described with reference to Fig. 7. Fig. 7 is a longitudinal cross-sectional view showing a portion of the fuel injection system i〇c according to the third embodiment of the present invention in a shortage. The fuel injection system 100c of the present embodiment is compared with the fuel injection system 10a of the above-described embodiment, and is different from the fuel injection valve device 16 in that it is equipped with a fuel injection valve device 16 and is equipped with a fuel supply pipe 84. Instead of the fuel supply pipe 18. Then, the fuel injection valve device 82 is compared with the fuel injection valve device 16, and the difference is a housing portion 86 having a substantially cylindrical shape without the flange portion 48. Further, the fuel supply pipe 84 is compared with the fuel supply pipe 18, and the difference is that the joint 90 is provided instead of the joint 44. A flange portion 94 having a bolt insertion hole 92 is formed around the hole portion 58 of the joint 90. The flange portion 94 has substantially the same shape as the flange portion 48 of the fuel injection valve device 16. Therefore, in the present embodiment, 'the nozzle portion 60 of the fuel injection valve device 82 is attached to the fitting hole 12 of the intake pipe 14, and when the fuel supply pipe 84^ is connected to the connecting pipe 32, the bolt insertion hole is passed through the flange portion 94. 92. The fuel supply pipe 84 and the fuel injection valve device 84 are locked and fixed by bolts 24. The above-described fuel injection system 10c according to the present embodiment is configured such that the fuel supply pipe 84 and the fuel injection valve device 82 are locked and fixed to the intake pipe 14 by the flange portion 94' formed in the joint 90. Therefore, the connection portion between the fuel supply pipe 84 and the fuel injection valve device 82 can prevent the fuel supply pipe 84 from being shaken or shaken. For example, the workability of fixing the fuel hose 17 to a specific position of the internal combustion engine can be omitted. Further, -15-(13) 1326739 can reduce the flange portion 48, and the shape of the fuel injection valve device 82 can be simplified, and the manufacturing cost of the fuel injection valve device 82 can be further reduced. The present invention has been described above by the above embodiments, but the present invention is not limited thereto, and various configurations can of course be employed without departing from the gist of the present invention. For example, the fuel hose 17 is not particularly limited as long as it meets the characteristics required for a fuel hose through which fuel such as gasoline flows. However, it has been described in the above embodiment that it is preferable to use the tube 17a and the inner tube. 17b and protective tube 1 7 c are composed. In addition, the material of the fuel hose 17 and the fuel supply pipes 18 and 84 is not particularly limited as long as it is a resin material, and it is preferable to use a polyamide resin or a fluorine resin. Further, the 'fuel injection valve device 16 is attached to the intake pipe 14, but is not limited thereto. The fuel injection valve device 16 may be directly attached to the suction passage of the combustion chamber by the nozzle head 30 of the fuel injection valve device 16. Cylinder head of the combustion chamber, etc. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal cross-sectional view showing a portion of a fuel injection system according to a first embodiment of the present invention. Fig. 2A is a cross-sectional view of the fuel hose of the present embodiment; A cross-sectional view showing a state in which the fuel hose of the above embodiment is expanded in diameter. Fig. 3 is a longitudinal cross-sectional view for explaining a shortage of a part of the connection order of the components of the fuel injection system of the embodiment. -16- (14) 1326739 Figure 4 is a cross-sectional view of the IV_IV line in Figure 3. Fig. 5 is a longitudinal sectional view showing a part of the fuel injection system of the second embodiment of the present invention in a shortage. Fig. 6A is a plan view of the flange plate of the embodiment, and Fig. 6B is an explanatory view showing a state in which the groove portion of the casing portion is sandwiched by the two flange plates, and Fig. 6C shows the use of two pieces. An illustration of the manner in which the flange plate is sandwiched between the groove portions of the casing portion. Fig. 7 is a longitudinal sectional view showing a part of the fuel injection system of the third embodiment of the present invention in a shortage. [Effect of the Invention] According to the present invention, it is possible to improve the mountability or maintainability of the fuel injection valve device for the fuel injection system. Further, according to the present invention, the number of parts of the fuel injection valve device and the fuel injection system can be reduced, and the production cost can be reduced and the production cost can be reduced. [Main component symbol description] l〇a, l〇b, 10c: fuel injection system 1 2: assembly hole 14: intake pipe 16, 72 ' 82: fuel injection valve device: fuel hose 18, 84: fuel supply pipe 2〇: suction flow path -17- (15) 1326739 22: groove valve 24: bolt 26: threaded portion 32: connecting tube 3 4: injection port 3 6 : valve body 3 8 , 5 4 : flow path φ 4 4, 90: Joint 46: Fuel hose insertion portion 48' 94: Flange portion 50, 78, 92: Bolt insertion hole 80: Flange plate-18