1238874 玖、發明說明： 【發明所屬之技術領域】 本發明係關於一種燃料噴射裝置，在燃料噴射裝置中， 通過燃料泵，使貯存於燃料箱内的燃料的壓力上升，通過 燃料噴射閥，將該壓力上升的燃料以噴射方式供向引擎， 其中，本發明特別是關於一種通過燃料泵和燃料噴射閥構 成的燃料供給裝置。 【先前技術】 在日本專利特開2 0 0 1 - 2 2 1 1 3 7號公報中揭示一現有的燃 料供給裝置。其中特別是上述圖8揭示下述的内容。 即，柱塞泵和噴嘴以成為一體之方式連接配置，在構成 柱塞泵的泵主體的下端，通過鉚接固定配置有間隔件，喷 嘴的筒體的上方螺合在該間隔件上。 另外，喷嘴包括入口節流（〇 r i f i c e )噴嘴，該入口節流 喷嘴使在壓送行程的後期區域壓力上升的燃料通過；出口 節流喷嘴，該出口節流喷嘴用於使通過入口節流喷嘴的燃 料的一部分環流，並且喷射通過入口節流喷嘴的燃料與通 過出口節流喷嘴的燃料之間的差量的燃料。 【發明内容】 (發明所欲解決之問題） 根據上述現有的燃料供給裝置，噴嘴喷射通過入口節流 的燃料與通過出口節流喷嘴的燃料之間的差量的燃料與根 據來自E C U的喷射信號，進行燃料的喷射的現有的電磁式 的燃料噴射閥（通過螺線管線圈的通電時間，控制針閥的開 6 312/發明說明書(補件)/93-06/93107249 1238874 口）相比較，相當於無法對閥體進行電控制之程度的此燃料 控制性差。 此外，電磁燃料泵與噴嘴在燃料流路内，以螺紋嵌合方 式連接，必須配置專用的洩漏抑制機構以便使燃料不從連 接部洩漏。另外，具有電磁燃料泵的噴嘴係固定於進氣管 等上，因此有專門配置固定用機構的必要。 另外，配置於柱塞泵内的電磁線圈本身發熱，該熱量從 構成柱塞泵的間隔件，對構成喷嘴的筒體進行加熱，使在 噴嘴中流動的燃料的溫度上升。 根據上面說明，在喷嘴中流動的燃料中，產生蒸汽，該 蒸汽使朝向進氣管内部噴射的燃料量不均勻，或使燃料的 供給間斷。 這些情況特別是對於引擎的空載運轉、低速運轉等的燃 料消耗較少的區域，是不佳的。 另外，在引擎的長時間的空載運轉時、高負載低速運轉 時等情況下，進氣管的溫度大大地上升。 另一方面，喷嘴的前端部插入配置於進氣管内，由此， 則與喷嘴成一體形成的柱塞泵也接近進氣管而配置。 根據上面說明，則進氣管中的上升的溫度容易作用於柱 塞泵，在溫度上升的柱塞泵内，容易產生蒸汽。 根據上面說明，由於柱塞泵内的蒸汽的壓縮作用，泵排 出量容易產生不平衡，難於保持穩定的泵性能。 本發明的主要目的在於提供一種燃料供給裝置，該燃料 供給裝置可採用現有的電磁燃料喷射閥，進行正確的燃料 7 312/發明說明書(補件)/93-06/93107249 1238874 的供給，同時無需專用的燃料洩漏抑制機構、相對進氣管 的固定機構，相對引擎的安裝和整體的燃料管佈置簡單， 特別是適合二輪機車、船外機、通用機，本發明的另一目 的在於提供一種燃料供給裝置，該燃料供給裝置在很少受 到引擎環境氣體溫度的影響下，可抑制燃料泵和燃料喷射 閥内的蒸汽的發生，可進行正確及穩定的燃料供給。 (解決問題之手段） 為達成上述目的，本發明之燃料供給裝置，係在燃料喷 射裝置中，通過燃料泵使燃料箱内的燃料的壓力上升，將 該壓力上升的燃料通過燃料喷射閥向引擎喷射供給，其第 1特徵在於： 泵用固定鐵心和喷射閥用固定鐵心通過在内部沿軸心 方向開設有燃料流路的由非磁性材料形成的管狀構件接合 形成管組件，該泵用固定鐵心其内部沿軸心方向開設有燃 料排出通路並由磁性材料形成，該喷射閥用固定鐵心其内 部沿軸心方向開設有燃料流入通路並由磁性材料形成，通 過主體對上述管組件進行外部成形，同時朝向從主體向一 側突出的泵用固定鐵心形成電磁燃料泵，朝向從主體向另 一側突出的喷射閥用固定鐵心形成電磁閥燃料喷射閥。 根據該第1特徵，構成電磁燃料泵的泵用固定鐵心和構 成電磁燃料喷射閥的喷射閥用固定鐵心，係通過由非磁性 材料形成的管狀構件所接合，開設於泵用固定鐵心中的燃 料排出通路與開設於噴射閥用固定鐵心中的燃料流入通 路，係通過開設於管狀構件中的燃料流路連接。 8 312/發明說明書(補件)/93-06/93107249 1238874 因此’從電磁燃 外部，不需要特別 另外，由於泵用 狀構件接合形成管 形，故通過將主體 及電磁燃料噴射閥 裝機構並可簡化安 此外，在燃料系 該熱量通過主體減 於是，可抑制在 並且可降低燃料喷 另外，由於燃料 的位置，故不造成 升，可抑制燃料泵 泵的泵作用。 另外，本發明在 述主體中成一體形 調節器的燃料室， 通過開設於主體中 根據上述第2特 節器的燃料室凹部 體相對主體的安裝 緊湊地將整個裝置 再有，本發明在 料泵向電磁燃料贺射 的洩漏抑制機構。 固定鐵心和噴射閥用 組件，該管組件係由 安裝於進氣管上，便 相對進氣管的安裝， 裝。 驅動時燃料泵内的電 少抑制從燃料喷射閥 燃料喷射閥内流動的 射閥内蒸汽的發生。 泵對應於主體的規格 因進氣管的熱量燃料 内蒸汽的發生，由此 上述第1特徵之上， 成燃料室凹部，該燃 上述燃料室凹部和管 的壓力燃料流入通路 徵，由於可不需要專 的燃料室體，可削減 作業，另外，可減少 小型化。 第1特徵之上，其第 閥的燃料不洩漏到 固定鐵心係通過管 主體進行外部成 可完成電磁燃料泵 不需要專門配備安 磁線圈發熱，但是 的熱傳導。 燃料溫度的上升， 配置於離開進氣管 泵的溫度大大上 可良好地保持燃料 其第2特徵在於上 料室凹部形成壓力 狀構件的燃料流路 連接。 門配備形成壓力調 零件數量和燃料室 燃料室體的突出可 3特徵在於上述主 312/發明說明書(補件)/93-06/93107249 9 1238874 體中，成一體形成有緩衝室凹部，該緩衝室凹部形成脈動 緩衝器（p u 1 s a t i ο n d a m p e r )的燃料室，通過開設於主體中 的緩衝燃料流入通路，連接上述緩衝室凹部和管狀構件的 燃料流路。 根據上述第3特徵，由於不需要專門配備形成脈動緩衝 器的缓衝室凹部的燃料室體，可削減零件數量和燃料室體 相對主體的安裝作業，另外，可減少燃料室體的突出量， 故可緊湊地將整個裝置集中。 另外，本發明在第1特徵之上，其第4特徵在於主體上 成一體形成有泵聯接器，該泵聯接器具有與構成上述電磁 燃料噴射泵的電磁線圈連接的凸型端子銷；喷射閥聯接 器，該喷射閥聯接器具有與構成電磁燃料噴射泵的電磁線 圈連接的凸型端子銷。 根據上述第4特徵，由於在對主體進行成形時同時成形 形成泵聯接器與噴射閥聯接器，故可通過單一的模製作 業，製作兩個聯接器。 此外，本發明在上述第4特徵之上，其第5特徵在於上 述泵聯接器和喷射閥聯接器從主體的同一側而配置。 根據上述第5特徵，由於將主體安裝於進氣管上後的兩 個聯接器與和外部電源連接的凹型聯接器的連接作業可從 同一方向進行，故可提高連接作業性。 【實施方式】 下面通過圖1，對本發明的燃料供給裝置的一實施例進 行說明。元件符號1表示管組件，該管組件1由泵用固定 10 312/發明說明書(補件)/93-06/93107249 1238874 鐵心2和管狀構件3與噴射閥用固定鐵心4形成，其通過 下述方式形成。 果用固定鐵心2由磁性材料形成，燃料排出通路2 C以 貫通方式從上端2 A朝向下端2 B開設，在其外周的中間部， 形成繫止突出部2D和繫止槽2E。 管狀構件3通過非磁性材料形成，燃料流路3 C以貫通 方式從上端3A朝向下端3B形成。 喷射闊用固定鐵心4通過磁性材料形成，燃料流入通路 4C以貫通方式從上端4A朝向下端4B開設，在其外周的下 端附近，形成有起上側磁極板的作用的環狀突出部4 D。 此外，在上面說明中，繫止槽2E、繫止突出部2D和環 狀突出部4D不是必要的。 另外，上述泵用固定鐵心2的下端2 B和管狀構件3的 上端3 A對接配置，並且管狀構件3的下端3 B與喷射閥用 固定鐵心4的上端4A對接配置，在該狀態兩個對接面通過 焊接而接合。 根據上面說明，位於上側的泵用固定鐵心2和位於下側 的喷射閥用固定鐵心4通過位於中間部的管狀構件3而固 定連接，該泵用固定鐵心2的燃料排出通路2 C與喷射閥用 固定鐵心4的燃料流入通路4 C通過管狀構件3 C而連接形 成通路。 在這些連接的流路2 C、3 C、4 C中，燃料排出通路2 C開 口於泵用固定鐵心2的上端2 A，燃料流入通路4 C開口於 喷射閥用固定鐵心4的下端4 B，將上述流路的外周部分與 3】2/發明說明書(補件)/93-06/93107249 11 1238874 大氣完全隔絕開。 另外，由合成樹脂材料形成的主體5自動地成形於管組 件1的外周上，泵用固定鐵心2的下方部分成形固定於主 體5内，繫止突出部2D配置於主體5的上端5A上，該泵 用固定鐵心2從主體5的上端5A向上方突出地固定配置。 再有，喷射閥用固定鐵心4的上方部分成形固定於主體 5内，具有環狀突出部4 D的下方部分從主體5的下端5 B 向下方突出固定配置。 於是，管組件1牢固地固定配置於主體5上，泵用固定 鐵心2的上方部分突出地從主體5的上端5 A向上方配置， 喷射閥用固定鐵心4的下方部分突出地從主體5的下端5 B 向下方配置。 管狀構件3係成形配置於主體5内，5 C表示從主體5向 側方延伸的安裝突出部，在該安裝突出部5 C中開設有安裝 孔5 D。 另外，在從主體5的上端5A向上方突出的泵用固定鐵 心2的上方部分配置有電磁燃料泵P。下面通過圖2，進行 說明。 6表示線圈架，該線圈架6由筒狀的圓筒部6A、下方突 出部6B、上方突出部6C構成，該下方突出部6B從圓筒部 6 A的下端在外周方向上延伸，該上方突出部6 C從圓筒部 6A的上端在外周方向上延伸，在圓筒部6A的外周捲繞有 電磁線圈7。 在上述線圈架6中，下方突出部6B以接觸方式配置於 12 312/發明說明書(補件)/93-06/93107249 1238874 環狀的下側磁極板8 (由磁性材料形成）上，該下側磁極板8 以磁耦合方式配置於泵用固定鐵心2的繫止槽2E内，此 時，在主體5的上端5A向上方突出的泵用固定鐵心2的上 方部分插入配置於線圈架6的下方的圓筒部6 A内。 9表示配置於圓筒部6A的無填料管，在該無填料管9的 内周，配置有活動柱塞1 0，該活動柱塞1 0以可滑動地在 無填料管9内移動。 活動柱塞1 0通過磁性材料形成，在導向筒部1 Ο B中朝 向上端朝向中間臺階部1 Ο A的下面，貫通開設有柱塞流路 1 0 C，該導向筒部1 Ο B根據與泵用固定鐵心2的上端2 A對 向地配置，並且從内部的中間臺階部1 Ο A的上方突出。 另外，在柱塞流路1 0 C的上方，配置有與下方相對面的 排出閥座1 1，且面對該排出閥座1 1配置有排出逆止閥1 2。 通過排出彈簧1 2 A，將該排出逆止閥1 2壓向排出閥座1 1。 1 3表示可以微小間隙支承活動柱塞1 0的導向筒部1 Ο B 的筒體構件，筒體構件1 3的導向孔1 3 A朝上方開口，在開 口端配置有與下方相對面的進入閥座1 4。 進入逆止閥15與進入閥座14對向地配置，通過進氣彈 簧1 5 A將其朝向進入閥座1 4按壓。 此外，上述筒體構件1 3固定配置於流入接頭1 7内，該 流入接頭1 7固定配置於環狀的上側磁極板1 6 (通過磁性材 料形成）上，該上側磁極板1 6配置於線圈架6的上方突出 部6 C的上面。 此外，上述流入接頭1 7包括燃料流入通路1 8，該燃料 13 312/發明說明書(補件)/93-06/93 ] 07249 1238874 流入通路1 8具有收納無填料管9的上方部分的凹部，並且 向上方開口 ，該燃料流入通路1 8的下方通過進入閥座1 4 與筒體構件13中的導向孔13A連通而形成通路。 再次對活動柱塞1 0進行說明，在該活動柱塞1 0中，導 向筒部1 Ο B以微小間隙滑動地支承於筒體構件1 3的導向孔 13A上，並且通過下彈簧18A和上彈簧18B，被以平衡狀態 支承於一定位置。 該下彈簧18A的下端繫止在泵用固定鐵心2的上端2A 上，其上端與活動柱塞1 〇的中間臺階部的下面繫止。 此外，上彈簧1 8 B的下端繫止在活動柱塞1 0的中間臺 階部的上面上，其上端與筒體構件1 3的突出部的下面繫 止。 由此在筒體構件1 3的進入閥座1 4與排氣閥座1 1之間 的導向孔1 3 A中形成泵室1 9。 另外，2 0表示由磁性材料形成，呈兩端開口的圓筒狀的 軛鐵，通過將該軛鐵2 0的上端薄壁部向内部鉚接，將流入 接頭1 7、上側磁極板1 6固定在線圈架6的上方突出部6 C 的上面，通過該軛鐵2 0的下端薄壁部向内部鉚接，由此將 具有泵用固定鐵心2的下側磁性板8朝向線圈架6的下方 突出部6B的下面固定。 根據上面說明，則通過軛鐵2 0 -上側磁極板1 6 _活動柱 塞1 0 -泵用固定鐵心2 -下側磁極板8 -軛鐵2 0，形成泵的磁 性電路。此時，在系用固定鐵心2和喷射閥用固定鐵心4 之間，配置有由非磁性材料形成的管狀構件3，因此泵的 14 3 ] 2/發明說明書(補件)/93-06/93107249 1238874 磁性電路朝喷射閥用固定鐵心4無磁性洩漏的發生。 2 1表示一對凸型端子銷，該凸型端子銷2 1與電磁線圈 7的始端繞組和終端繞組連接，以突出的方式埋設於泵聯 接器22的内底部。 在由合成樹脂材料將輛鐵2 0的上端薄壁部和流入接頭 1 7的下方外周進行外部成形時，同時形成上述聯接器2 2。 於是，電磁燃料泵P固定配置在從主體5的上端5A向 上方突出的泵用固定鐵心2上。 接著，電磁燃料噴射閥J配置於從主體5的下端5 B向 下方突出的喷射閥用固定鐵心4的下方部分。 3 0表示表示線圈架，該線圈架3 0通過合成樹脂材料形 成，其由圓筒部30A、上方突出部30B與下方突出部30C 構成，在圓筒部3 Ο A的外周上纏繞電磁線圈3 1。 3 2表示通過磁性材料形成的軛鐵，從形成於大致中間部 處的底部朝向上方，凹設有線圈架收納孔32A，同時，朝 向下方凹設有閥體收納孔3 2 B。 此外，從軛鐵3 2的上方開口朝向線圈架收納孔3 2 A内 收納有包括電磁線圈3 1的線圈架3 0，接著，線圈架3 0的 上方突出部3 Ο B的上面與喷射閥用固定鐵心4的環狀突出 部4D的下面抵接配置。 另外，3 3為自由移動配置於線圈架30的圓筒部30八内 並且與喷射閥用固定鐵心4的下端4 B對向配置由磁性材料 構成的芯子，該芯子3 3通過彈簧3 4被向離開喷射閥用固 定鐵心4的下端4 B的方向賦能（圖中的下方）。 15 312/發明說明書(補件)/93-06/93107249 1238874 在該狀態，形成於軛鐵3 2的上端的上側薄壁部朝向噴 射閥用固定鐵心4的環狀突出部4D的外周向内部鉚接，該 軛鐵3 2固定於喷射閥用固定鐵心4上，該軛鐵3 2的上方 開口通過噴射閥用固定鐵心4的環狀突出部4D封閉，在線 圈架收納孔3 2 A的内收納配置有具有電磁線圈3 1的線圈架 30 、芯子33 。 3 5表示在下端開設有喷射孔3 5 A的閥體，在該閥體3 5 内可移動地配置有針閥3 6，在該針閥3 6具有可開閉喷射 孔3 5 A的閥部3 6 A，該針閥3 6的上端固定於上述芯子3 3 上。上述芯子3 3和具有針閥3 6的閥體3 5從下方插入配置 於軛鐵3 2的閥體收納孔3 2 B内，將軛鐵3 2的下端的薄壁 部朝向閥體3 5的直徑縮小部向内部鉚接，在軛鐵3 2的閥 體收納孔3 2 B内，收納配置有具有針閥3 6的閥體3 5。 3 7表示一對凸型端子銷，該凸型端子銷3 7與電磁線圈 3 1的始端繞組和末端繞組連接，以突出的方式埋設於喷射 閥聯接器38的内底部。 在通過合成樹脂材料將軛鐵3 2的上端薄壁部和從主體5 的下端5 B的下方突出的噴射閥用固定鐵心4的外周進行外 部成形時，同時形成上述噴射閥聯接器3 8。 由此電磁燃料喷射閥J固定配置於從主體5的下端5 B 向下方突出的噴射閥用固定鐵心4上，且，通過軛鐵3 2 -環狀突出部4 D -噴射閥用固定鐵心4 _芯子3 3 -軛鐵3 2，形 成電磁燃料噴射閥J的磁性電路。此時，在喷射閥用固定 鐵心4與泵用固定鐵心2之間配置有由非磁性材料形成的 16 312/發明說明書(補件)/93-06/93107249 1238874 管狀構件3，燃料噴射閥的磁性電路不向泵用固定鐵心2 漏磁。 此外，成一體地安裝有電磁燃料泵P與電磁燃料喷射閥 J的主體5通過下述方式，配置於引擎上。 如果通過圖3進行說明，4 0表示在内部貫通開設有進氣 通路41的進氣管，進氣通路41的下游與引擎E連接，其 上游與後述的節流閥體連接。 此外，在進氣管4 0中插入燃料喷射閥J的軛鐵3 2的下 端部和闊體3 5，同時開設有通向進氣通路4 1内的喷射閥 支承孔42。另外，在進氣管40中主體支承部40A從斜上 方突出地形成，在主體支承部4 0 A的上端面4 0 B上開設有 内螺紋孔4 0 C。 另一方面，在上述的節流閥體4 3内，開設有進氣通路 44，該進氣通路44與進氣管40的進氣通路41連接，該進 氣通路4 4通過蝶型的節流閥4 6而實現開閉，該節流閥4 6 安裝於以可旋轉地支承於節流閥體4 3上的節流閥軸4 5上。 該節流閥軸4 5的旋轉操作通過操作者進行。 另外，上述節流閥體的進氣通路4 4的上游側與空氣淨 化器A連接。即，通過該空氣淨化器A而去除了異物的清 潔空氣，係通過節流閥體4 3的進氣通路4 4，進氣管4 0的 進氣通路41供向引擎E，此時，供向引擎E的空氣量對應 於由操作者操作的節流閥4 6的打開程度而決定。 再有，具有燃料泵P和燃料喷射閥J的主體5係通過下 述方式安裝於進氣管上。 17 312/發明說明書(補件)/93-06/93 ] 07249 1238874 即，主體5的安裝突出部5C配置於進氣管40的主體支 承部4 0 A的上端面4 0 B上並且包括燃料噴射閥J的閥體3 5 的軛鐵3 2的下端部插入配置於進氣管4 0的噴射閥支承孔 4 2内。在上述狀態，將螺釘4 7插入安裝突出部5 C的安裝 孔5 D内，該螺釘4 7從主體支承部4 0 A的内螺紋孔4 0 C螺 合。 根據上述說明，主體5固定地安裝於進氣管4 0上此時， 具有電磁燃料噴射閥J的閥體3 5的軛鐵3 2的下端部支承 於進氣管4 0的噴射閥支承孔4 2内。於是，開口於燃料喷 射閥J的閥體3 5的下端面的噴射孔3 5 A也可開口於喷射閥 支承孔4 2内，喷射孔3 5 A通過喷射閥支承孔4 2朝向進氣 管40的進氣通路41内開口。 此外，燃料管如下述這樣佈置。即，在内部貯存有燃料 的燃料箱T與開設於燃料泵P的流入接頭1 7中的燃料流入 通路1 8通過燃料流入管4 8連接。 另外，4 9表示配置於上述燃料流入管内的低壓側燃料過 濾器，5 0表示配置於燃料流入管4 8向燃料箱T的開口端 的濾網。 另一方面，在燃料泵P的泵聯接器2 2中，嵌合有與 E C U (電子控制元件）5 1連接的凹型連接件，通過凸型端子 銷2 1而與E C U 5 1實現電連接，此外，在燃料喷射閥J的喷 射閥聯接器38中，也嵌合與ECU51連接的凹型連接件，通 過凹型端子銷37而與ECU51實現電連接。 根據具有如上述那樣形成的燃料供給裝置的燃料喷射 18 312/發明說明書(補件)/93-06/93107249 1238874 裝置，在包括引擎的啟動操作的引擎的運轉時朝向ECU 51 朝向電磁燃料泵P，輸出電信號，在電磁燃料泵P的電磁 線圈7非通電時，活動柱塞1 0保持在上彈簧1 8 B與下彈簧 1 8 A的彈力平衡的第一狀態，泵室1 9保持在小容積狀態。 接著，如果對電磁線圈7通電，則活動柱塞1 0從泵用 固定鐵心2向下方吸引移動，保持在第二狀態，泵室1 9 的室容積對應於其移動而增加保持在大容積狀態。 於是，若根據從E C U 5 1朝向電磁線圈7輸出的電信號， 則活動柱塞1 0對應於上述電信號，進行往復運動，在泵室 1 9的室容積較大的狀態，排出逆止閥1 2將排出閥座1 1封 閉，並且進氣逆止閥1 5打開進入閥座1 4，由此燃料箱T 内的燃料通過燃料流入管4 8進入到栗室1 9内。 另一方面，在泵室1 9的室容積較小的狀態，進氣逆止 閥1 5將進入.閥座1 4封閉，並且排出逆止閥1 2打開排出閥 座1 1，在泵室1 9内而壓力上升的燃料通過插棒式鐵心流 路1 0 C朝向燃料排出通路2 C排出。 根據上面說明，在包括引擎啟動操作時的引擎運轉時， 燃料箱T内的燃料的壓力在泵室1 9内上升，之後，該燃料 連續地從燃料排出通路2 C，通過管狀構件3的燃料流路3 C 朝向喷射閥用固定鐵心4的燃料流路4 C供給。 另一方面，在燃料喷射閥J中與電磁燃料泵P相同，輸 出來自ECU51的電信號，如果對電磁線圈31通電，芯子 3 3抵抗彈簧3 4的彈力朝向固定鐵心4的下端4 B吸引，針 閥3 6的閥部3 6 A打開喷射孔3 5 A。 19 312/發明說明書(補件)/93-06/93107249 1238874 於是，針閥3 6對應於來自E C U 5 1的喷射信號（通電時 間），打開噴射孔3 5 A，位於燃料流入通路4 C内的燃料通 過噴射孔35A供向進氣管40的進氣通路41内。 再有，以節流閥4 6的打開程度，對供給引擎E的空氣 量進行控制供給，通過電磁燃料喷射閥J供給的受到控制 的燃料與通過節流閥4 6控制的空氣，由此可進行引擎E 的適合的運轉。 根據如上述構成的本發明的燃料供給裝置，由於構成電 磁燃料泵P的泵用固定鐵心2與構成電磁燃料噴射閥J的 噴射閥用固定鐵心4通過由非磁性材料形成的管狀構件3 以機械方式接合，並且泵用固定鐵心2的燃料排出通路2 C 與管狀構件3的燃料流路3 C與噴射閥用固定鐵心4的燃料 流入通路4 C流路連接，故可極可靠地並且容易地進行從電 磁燃料泵P朝向電磁燃料喷射閥J的燃料的密封。 此外，由於燃料喷射閥J採用電磁式的燃料喷射閥，故 可通過來自E C U 5 1的電信號適當地進行從燃料喷射閥喷射 的燃料控制，此時，由於特別是，電磁燃料喷射閥J固定 配置於從主體5的下端5 B突出的喷射閥用固定鐵心4上， 電磁燃料泵P固定配置於從主體5的上端5 A突出的泵用固 定鐵心2上，故電磁燃料泵P與主體5的安裝和燃料喷射 閥J與主體5的安裝極簡單，並且無需安裝用的專用零件。 另外，在上面說明中，由於泵用固定鐵心2與喷射閥用 固定鐵心4可通過由非磁性材料形成的管狀構件3接合， 故可將具有泵用固定鐵心2的泵磁性電路與具有喷射閥用 20 312/發明說明書(補件)/93-06/93107249 1238874 固定鐵心4的噴射閥磁性電路完全地進行磁性隔絕。 再有，由於在主體5上預先固定地安裝有電磁燃料泵P 和電磁燃料噴射閥J，故將單一的主體5安裝於進氣管4 0 上由此可一下子將燃料供給裝置安裝於車輛上可大大地提 高相對車輛的安裝性。該情況對於特別如二輪機車那樣， 安裝空間受到限制的場合是有效的。 另外，由於在燃料管中，可通過燃料流入管4 8連接電 磁燃料泵P的燃料流入通路1 8和燃料箱T，故可提高燃料 管的設計的自由度，可簡化管的連接作業。 此外，由於連接電磁燃料泵P與電磁燃料喷射閥J的高 壓燃料管，通過泵用固定鐵心2的燃料排出通路2 C，管狀 構件3的燃料流路3 C，喷射閥用固定鐵心4的燃料流入通 路4C形成，故對於燃料管的耐壓性，不需要有特別的擔心。 特別是從電磁燃料泵P朝向電磁燃料喷射閥J的燃料管 的外周通過主體5圍繞，這一點作為二輪機車用燃料供給 裝置，從損傷、美觀的方面來說是較佳的。 另外，如果採用電磁燃料栗P，則電磁線圈7本身發熱5 由於該熱量容易使電磁燃料噴射閥J變暖，但是根據本發 明的燃料供給裝置，由於通過主體5，使從電磁燃料泵P 朝向電磁燃料噴射閥J的熱傳導減少，故抑制電磁燃料喷 射閥J内的燃料溫度的上升，由此可抑制在電磁燃料喷射 閥J内流動的燃料中的蒸汽發生，可將正確的燃料連續地 供給到進氣管40内。 此時，如果主體5的材料採用熱傳導率低於金屬材料的 21 312/發明說明書(補件)/93-06/93107249 1238874 件，該泵用固定鐵心由磁性材料形成其内部沿軸心方向開 設有燃料排出通路，該噴射閥用固定鐵心由磁性材料形成 在其内部沿軸心方向開設有燃料流入通路，通過主體，對 上述管組件進行外部成形，同時從主體向一側突出的泵用 固定鐵心上形成電磁燃料泵，在主體向另一側突出的喷射 閥用固定鐵心上形成電磁閥燃料喷射闊，由此可極可靠地 並且容易地實現從電磁燃料泵朝向電磁燃料噴射閥的壓力 上升的燃料的密封，並且可大大提高燃料管的耐壓性。 此外，由於通過主體對流有壓力上升的燃料的管組件進 行外部成形，其不直接地在大氣中露出，故特別是在用於 燃料供給系統在外部露出的二輪機車的場合，可抑制異物 的衝突，歪倒時的破損，此外，可使外觀集中。 另外，由於將電磁閥燃料泵固定配置於外部成形於主體 上的管組件的泵用固定鐵心上，電磁燃料喷射閥固定配置 於管組件的噴射閥用固定鐵心，因此電磁閥燃料泵、電磁 燃料噴射閥相對主體的安裝極簡單，並且無需安裝用的專 門零件。 再有，由於電磁燃料泵的磁性電路的一部分通過泵用固 定鐵心形成，電磁燃料噴射閥的磁性電路的一部分通過噴 射閥用固定鐵心形成，該泵固定用鐵心和喷射閥用固定鐵 心通過由非磁性材料形成的管狀構件接合，故可抑制電磁 燃料泵的磁性電路和電磁燃料噴射閥的磁性電路干擾（可 將磁性電路相互隔絕），由於採用在上面說明中的特別是電 磁式的燃料喷射閥，故可通過來自ECU的電信號，適當地 29 312/發明說明書(補件)/93-06/93107249 1238874 進行通過燃料噴射閥喷射的燃料控制。 由於電磁燃料泵和電磁燃料喷射閥預先固定於主體 上，故可通過將主體安裝於進氣管上，由此將燃料供給裝 置一下子安裝於車輛上，可提高安裝性。 另外，由於在燃料管中，可通過燃料流入管將電磁燃料 噴射閥的燃料流入通路和燃料箱連接，故可提高燃料管的 設計自由度，並且可簡化管的連接作業。 此外，由於因主體的作用使從電磁燃料泵朝向電磁燃料 喷射閥的熱傳導減少，故可抑制電磁燃料喷射閥内的燃料 溫度的上升，由此可抑制在電磁燃料喷射閥内流動的燃料 中的蒸汽發生，可連續地將正確的燃料供給到進氣管内。 此時，如果主體的材料採用熱傳導率低於金屬材料的合 成樹脂材料，例如，尼龍樹脂、環氧樹脂、聚苯硫則效果 更好。 另外，電磁燃料泵可以相當主體的厚度t的量離開進氣 管而配置。以及在進氣管和電磁燃料泵之間配置主體。由 此可抑制進氣管的熱量造成的電磁燃料录的溫度上升，這 樣，可良好地進行電磁燃料栗内的泵作用，不對排出性能 造成任何的阻礙，可將穩定的燃料供向電磁燃料噴射閥。 再有，可採用絕緣性較低的電磁線圈，能降低電磁線圈 的製造成本。 另外，如果在上述主體中成一體形成燃料室凹部，該燃 料室凹部形成壓力調節器的燃料室，通過開設於主體中的 壓力燃料流入通路連接上述燃料室凹部和管狀構件的燃料 30 312/發明說明書(補件)/93-06/93107249 1238874 流路，不需要專門配備具有燃料室凹部的燃料室體和向該 燃料室凹部的管，並且不需要將燃料室體安裝於主體上， 由此實現零件數量的削減，無需連接作業，此外，可將具 有壓力調節器的主體緊湊地集中。 此外，如果在主體中成一體形成有緩衝室凹部，該緩衝 室凹部形成脈動緩衝器的燃料室，通過開設於主體中的緩 衝燃料流入通路連接上述緩衝室凹部和管狀構件的燃料流 路，則不需要專門配備具有緩衝室凹部的緩衝室體與朝向 緩衝室凹部的管，並且不需要將緩衝室體安裝於主體。 於是，可削減零件數量，無需連接作業。 另外，如果在主體上成一體形成有泵聯接器，該泵聯接 器具有與構成上述電磁燃料噴射泵的電磁線圈連接的凸型 端子銷；噴射閥聯接器，該噴射閥聯接器包括與構成電磁 燃料喷射閥的電磁線圈連接的凸型端子銷，則在通過外部 成形方式形成主體時，可同時形成兩個聯接器，由此可削 減外部成形模具和自動模製作業。 再有，如果上述泵聯接器和噴射閥聯接器朝向主體的同 一側而配置，則可容易進行將與E C U連接的凹型連接件與 泵聯接器和噴射閥聯接器嵌合連接的連接作業。 此時，由於將凹型連接件和ECU連接的電導線沿同一方 向抽出，故可提高佈線的設計的自由度，在空間受到限制 的二輪機車上應用是有效的。 【圖式簡單說明】 圖1為用於本發明的燃料供給裝置的管組件的縱剖視 31 312/發明說明書(補件)/93-06/93107249 1238874 圖。 圖2為顯示本發明的燃料供給裝置的第一實施例的縱剖 視圖。 圖3為顯示本發明的燃料供給裝置安裝於引擎上的狀態 的系統圖。 圖4為顯示本發明的燃料供給裝置的其他實施例的主要 部分縱剖視圖。 圖5為顯示本發明的燃料供給裝置的另一實施例的主要部 分縱剖視圖。 (元件符號說明） A 空氣淨化器 D 脈動緩衝器 E 引擎 J 燃料噴射閥 P 燃料泵 R 壓力調節器 T 燃料箱 1 管組件 2 泵用固定鐵心 2 A 上端 2B 下端 2 C 燃料排出通路 2D 繫止突出部 2E 繫止槽 32 312/發明說明書(補件)/93-06/93107249 1238874 3 管狀構件 3 A 上端 3B 下端 3 C 燃料流路 4 喷射閥用固定鐵心 4 A 上端 4B 下端 4C 燃料流入通路 4D 環狀突出部 5 主體 5 A 上端 5B 下端 5C 安裝突出部 5D 安裝孔 6 線圈架 6 A 圓筒部 6B 下方突出部 6C 上方突出部 7 電磁線圈 8 下側磁極板 9 無填料管 10 活動柱塞 1 0 A 中間臺階部 1 0 B 導向筒部 312/發明說明書(補件)/93-06/93107249 1238874 1 0C 柱 塞 流 路 11 排 出 闊 座 12 排 出 逆 止 閥 1 2A 排 出 彈 簧 13 筒 體 構 件 1 3 A 導 向 孔 14 閥 座 15 逆 止 閥 1 5A 進 氣 彈 簧 16 上 側 磁 極 板 17 流 入 接 頭 18 燃 料 流 入 通 1 8A 下 彈 簧 1 8B 上 彈 簧 19 泵 室 20 輛 鐵 2 1 凸 型 端 子 銷 22 泵 聯 接 器 30 線 圈 架 30A 圓 筒 部 30B 上 方 突 出 部 30C 下 方 突 出 部 31 電 磁 線 圈 32 軏 鐵 312/發明說明書(補件)/93-06/93107249 34 1238874 3 2 A 線圈架收納孔 3 2 B 閥體收納孔 33 芯子 34 彈簧 35 閥體 3 5 A 噴射孔 36 針閥 36A 閥部 37 凸型端子銷 38 噴射閥聯接器 40 進氣管 40 A 主體支承部 40B 上端面 40C 内螺紋孔 4 1 進氣通路 4 2 喷射閥支承孔 43 節流閥體 44 進氣通路 4 5 節流閥軸 4 6 節流閥 4 7 螺釘 48 燃料流入管 4 9 低壓側燃料過濾器 5 0 濾·網 351238874 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a fuel injection device. In the fuel injection device, the pressure of the fuel stored in the fuel tank is raised by a fuel pump. The pressure-increased fuel is supplied to the engine by an injection method, and particularly, the present invention relates to a fuel supply device including a fuel pump and a fuel injection valve. [Prior Art] A conventional fuel supply device is disclosed in Japanese Patent Laid-Open Nos. 2000-1 2 2 1 37. Among them, the above-mentioned FIG. 8 discloses the following. That is, the plunger pump and the nozzle are connected and arranged integrally, and a spacer is fixedly arranged at the lower end of the pump body constituting the plunger pump by riveting, and the upper part of the barrel of the nozzle is screwed onto the spacer. In addition, the nozzle includes an inlet throttle nozzle which passes fuel having a pressure rise in a later region of the pressure feeding stroke, and an outlet throttle nozzle which is used to pass through the inlet throttle nozzle. A portion of the fuel is circulated, and the difference between the fuel passing through the inlet throttle nozzle and the fuel passing through the outlet throttle nozzle is injected. [Summary of the Invention] (Problems to be Solved by the Invention) According to the above-mentioned conventional fuel supply device, the nozzle injects the fuel between the fuel throttled by the inlet and the fuel throttled by the outlet and the fuel is supplied by the injection signal from the ECU Compared with the existing electromagnetic fuel injection valve (injection time of the solenoid coil to control the opening of the needle valve 6 312 / Invention Manual (Supplement) / 93-06 / 93107249 1238874 port) for fuel injection, This fuel has poor controllability equivalent to the extent that the valve body cannot be electrically controlled. In addition, the electromagnetic fuel pump and the nozzle are connected by screw fitting in the fuel flow path, and a dedicated leak suppression mechanism must be provided so that fuel does not leak from the connection portion. In addition, since the nozzle having an electromagnetic fuel pump is fixed to an intake pipe or the like, it is necessary to arrange a fixing mechanism exclusively. In addition, the solenoid coil disposed in the plunger pump itself generates heat, and the heat from the spacer constituting the plunger pump heats the cylinder constituting the nozzle to raise the temperature of the fuel flowing through the nozzle. According to the above description, among the fuel flowing in the nozzle, steam is generated, which makes the amount of fuel injected into the intake pipe uneven, or interrupts the supply of fuel. These conditions are particularly unfavorable in areas where fuel consumption is low, such as when the engine is idling, and at low speeds. In addition, during long periods of no-load operation of the engine and high-load low-speed operation, the temperature of the intake pipe greatly increases. On the other hand, since the front end portion of the nozzle is inserted into the intake pipe, the plunger pump formed integrally with the nozzle is also arranged close to the intake pipe. According to the above description, the rising temperature in the intake pipe easily acts on the plunger pump, and in the plunger pump whose temperature rises, steam is easily generated. According to the above description, due to the compression of the steam in the plunger pump, the pump discharge amount is likely to be unbalanced, and it is difficult to maintain stable pump performance. The main object of the present invention is to provide a fuel supply device that can use an existing electromagnetic fuel injection valve to perform correct fuel supply 7 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 without the need for Dedicated fuel leakage suppression mechanism, fixed mechanism relative to the intake pipe, simple installation relative to the engine and overall fuel pipe arrangement, especially suitable for two-wheeled locomotives, outboard motors, and general-purpose engines. Another object of the present invention is to provide a fuel A fuel supply device that suppresses the occurrence of steam in a fuel pump and a fuel injection valve under the influence of the temperature of the engine's ambient gas, and enables accurate and stable fuel supply. (Means for Solving the Problems) In order to achieve the above-mentioned object, the fuel supply device of the present invention is a fuel injection device that raises the pressure of fuel in a fuel tank by a fuel pump, and passes the fuel having the pressure increased to an engine through a fuel injection valve. The first feature of the injection supply is that a fixed core for a pump and a fixed core for an injection valve are joined together to form a tube assembly by a tubular member formed of a non-magnetic material and provided with a fuel flow path in the axial direction of the inside. The fixed core for a pump The inside of the injection valve is provided with a fuel discharge path in the axial direction and is formed of a magnetic material. The fixed core for the injection valve is provided with the fuel inflow path in the axial direction and is formed of a magnetic material. At the same time, the electromagnetic fuel pump is formed toward the fixed iron core for the pump protruding from the main body to one side, and the electromagnetic valve fuel injection valve is formed toward the fixed iron core for the injection valve protruding from the main body to the other side. According to this first feature, the fixed iron core for a pump constituting an electromagnetic fuel pump and the fixed iron core for an injection valve constituting an electromagnetic fuel injection valve are joined by a tubular member formed of a non-magnetic material, and the fuel is opened in the fixed core for the pump The exhaust passage and the fuel inflow passage provided in the fixed core for the injection valve are connected through a fuel flow path provided in the tubular member. 8 312 / Invention Manual (Supplement) / 93-06 / 93107249 1238874 Therefore, 'from the outside of the electromagnetic ignition, there is no need for a special addition. Since the pump-like members are joined to form a tube shape, the main body and the electromagnetic fuel injection valve are installed with the mechanism and It is possible to simplify the installation. In addition, in the fuel system, the heat is reduced by the main body, and fuel injection can be suppressed and reduced. In addition, the fuel position does not cause a rise, and the pumping action of the fuel pump can be suppressed. In addition, according to the present invention, the fuel chamber of the integrated regulator is integrated in the main body, and the entire device is compactly installed by mounting the recessed body of the fuel chamber of the second special joint to the main body in the main body. Leak suppression mechanism for shooting electromagnetic fuel. It is a component for fixing the iron core and the injection valve. The tube assembly is installed on the intake pipe, and is installed relative to the installation of the intake pipe. The electric quantity in the fuel pump at the time of driving suppresses the generation of steam in the injection valve flowing from the fuel injection valve. The pump corresponds to the specifications of the main body. Due to the generation of steam in the fuel due to the heat of the intake pipe, the above-mentioned first feature forms a recess in the fuel chamber. The pressure fuel inflow path that burns the recess in the fuel chamber and the pipe is not required. Dedicated fuel chamber body can reduce work and miniaturization. In addition to the first feature, the fuel of the first valve is not leaked to the fixed iron core, and is externally formed by the tube body. The electromagnetic fuel pump can be completed. It does not need to be equipped with a magnetic coil to generate heat, but its heat conduction. The fuel temperature rises and is placed at a temperature far from the intake pipe. The temperature of the pump is greatly maintained, and the fuel can be well maintained. The second feature is that the recess of the feed chamber forms a pressure-flow-shaped member connected to the fuel flow path. The door is equipped with a number of pressure regulating parts and a protrusion of the fuel chamber body. The feature is that the main body 312 / Invention Specification (Supplement) / 93-06 / 93107249 9 1238874 is formed into a buffer chamber recess integrally, and the buffer The chamber recess forms a fuel chamber of a pulsation damper (pu 1 sati ο ndamper), and the fuel flow path of the buffer chamber recess and the tubular member is connected by a buffer fuel inflow passage opened in the main body. According to the third feature described above, since the fuel chamber body which does not need to be specially equipped with a buffer chamber recess forming a pulsation buffer, the number of parts and the installation work of the fuel chamber body with respect to the main body can be reduced, and the amount of protrusion of the fuel chamber body can be reduced. Therefore, the entire device can be compactly concentrated. In addition to the first feature, the present invention has a fourth feature in that a main body is integrally formed with a pump coupling having a male terminal pin connected to an electromagnetic coil constituting the electromagnetic fuel injection pump, and an injection valve. A coupler having a male terminal pin connected to an electromagnetic coil constituting an electromagnetic fuel injection pump. According to the fourth feature described above, since the pump coupling and the injection valve coupling are formed at the same time when the main body is molded, two couplings can be manufactured by a single molding industry. In addition to the fourth feature, the fifth feature of the present invention resides in that the pump coupling and the injection valve coupling are arranged from the same side of the main body. According to the fifth feature described above, since the connection work of the two connectors after the main body is mounted on the intake pipe and the female connector connected to the external power source can be performed from the same direction, the connection workability can be improved. [Embodiment] An embodiment of a fuel supply device according to the present invention will be described below with reference to Fig. 1. The reference numeral 1 denotes a pipe assembly 1 formed by a pump fixing 10 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 iron core 2 and a tubular member 3 and a fixed iron core 4 for an injection valve, which are formed by the following Way to form. The fixed iron core 2 is formed of a magnetic material, and the fuel discharge passage 2C is opened in a penetrating manner from the upper end 2A to the lower end 2B. At the middle portion of the outer periphery, a retaining projection 2D and a retaining groove 2E are formed. The tubular member 3 is formed of a non-magnetic material, and the fuel flow path 3C is formed in a penetrating manner from the upper end 3A toward the lower end 3B. The fixed iron core 4 for injection is formed of a magnetic material, and the fuel inflow path 4C opens from the upper end 4A to the lower end 4B in a penetrating manner. A ring-shaped protruding part 4D serving as an upper magnetic pole plate is formed near the lower end of the outer periphery. Further, in the above description, the retaining grooves 2E, the retaining protrusions 2D, and the annular protrusions 4D are not necessary. In addition, the lower end 2 B of the fixed iron core 2 for the pump and the upper end 3 A of the tubular member 3 are arranged to be abutted, and the lower end 3 B of the tubular member 3 is arranged to be abutted to the upper end 4A of the fixed iron core 4 for the injection valve. The faces are joined by welding. As described above, the fixed iron core 2 for the pump on the upper side and the fixed iron core 4 for the injection valve on the lower side are fixedly connected by the tubular member 3 located in the middle portion. The fuel discharge path 2 C of the fixed iron core 2 for the pump and the injection valve The fuel inflow path 4C by the fixed iron core 4 is connected by a tubular member 3C to form a path. In these connected flow paths 2 C, 3 C, and 4 C, the fuel discharge path 2 C opens at the upper end 2 A of the fixed iron core 2 for the pump, and the fuel inflow path 4 C opens at the lower end 4 B of the fixed iron core 4 for the injection valve. , Completely isolate the outer peripheral part of the above flow path from the atmosphere of 3] 2 / Invention Specification (Supplement) / 93-06 / 93107249 11 1238874. In addition, the main body 5 formed of a synthetic resin material is automatically formed on the outer periphery of the tube assembly 1, and the lower part of the pump fixing iron core 2 is formed and fixed in the main body 5, and the stop projection 2D is arranged on the upper end 5A of the main body 5. The fixed iron core 2 for a pump is fixedly arranged so as to protrude upward from the upper end 5A of the main body 5. The upper portion of the injection valve fixing iron core 4 is formed and fixed in the main body 5, and the lower portion having the annular protruding portion 4D is projected and fixed downward from the lower end 5B of the main body 5. Then, the tube assembly 1 is firmly fixed to the main body 5, the upper part of the fixed iron core 2 for the pump is protruded upward from the upper end 5A of the main body 5, and the lower part of the fixed iron core 4 for the injection valve protrudes from the main body 5. The lower end 5 B is arranged downward. The tubular member 3 is formed and arranged in the main body 5, and 5C represents a mounting protrusion extending laterally from the main body 5, and a mounting hole 5D is formed in the mounting protrusion 5C. In addition, an electromagnetic fuel pump P is disposed at an upper portion of the pump fixed core 2 protruding upward from the upper end 5A of the main body 5. This is explained below with reference to FIG. 2. Reference numeral 6 denotes a bobbin. The bobbin 6 is composed of a cylindrical cylindrical portion 6A, a lower protruding portion 6B, and an upper protruding portion 6C. The lower protruding portion 6B extends from the lower end of the cylindrical portion 6 A in the outer peripheral direction. The protruding portion 6C extends in the outer peripheral direction from the upper end of the cylindrical portion 6A, and an electromagnetic coil 7 is wound around the outer periphery of the cylindrical portion 6A. In the above-mentioned coil bobbin 6, the lower protruding portion 6B is disposed in a contact manner on 12 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 The ring-shaped lower magnetic pole plate 8 (formed of a magnetic material). The side magnetic pole plate 8 is magnetically coupled in the retaining groove 2E of the fixed iron core 2 for the pump. At this time, the upper part of the fixed iron core 2 for the pump protruding upward from the upper end 5A of the main body 5 is inserted into the coil core 6. Inside the lower cylindrical part 6A. Numeral 9 denotes an unfilled tube disposed in the cylindrical portion 6A. A movable plunger 10 is disposed on the inner periphery of the unfilled tube 9 and the movable plunger 10 is slidably moved in the unfilled tube 9. The movable plunger 10 is formed of a magnetic material, and the plunger flow path 1 0 C is penetrated through the guide cylinder part 1 〇 B toward the upper end and below the intermediate step part 10 OA. The upper end 2 A of the fixed iron core 2 for a pump is arranged facing each other, and protrudes from above the middle step portion 10 A inside. A discharge valve seat 11 facing the lower side is arranged above the plunger flow path 10 C, and a discharge check valve 12 is arranged facing the discharge valve seat 11. The discharge check valve 12 is pressed against the discharge valve seat 11 by the discharge spring 1 2 A. Reference numeral 1 3 indicates a cylindrical member that supports the guide cylinder portion 10B of the movable plunger 10 with a small gap. The guide hole 1 3 A of the cylindrical member 13 is opened upward, and an entrance facing the lower side is arranged at the opening end. Valve seat 1 4. The inlet check valve 15 is arranged to face the inlet valve seat 14 and is pressed toward the inlet valve seat 14 by the intake spring 15 A. In addition, the cylindrical member 13 is fixedly arranged in the inflow joint 17, and the inflow joint 17 is fixedly arranged on the ring-shaped upper magnetic pole plate 16 (formed by a magnetic material), and the upper magnetic pole plate 16 is arranged on the coil. The upper part of the upper projection 6C of the rack 6. In addition, the above-mentioned inflow joint 17 includes a fuel inflow path 18, which fuel 13 312 / Invention Specification (Supplement) / 93-06 / 93] 07249 1238874 Inflow path 18 has a recessed portion that accommodates an upper portion of the unfilled tube 9, Further, it opens upward, and the fuel inflow path 18 is formed below the inlet valve seat 14 by communicating with the guide hole 13A in the cylindrical member 13 to form a path. The movable plunger 10 will be described again. In this movable plunger 10, the guide cylinder portion 10B is slidably supported on the guide hole 13A of the cylinder member 13 with a small gap, and the lower spring 18A and the upper The spring 18B is supported at a fixed position in a balanced state. The lower end of the lower spring 18A is fastened to the upper end 2A of the fixed iron core 2 for a pump, and the upper end is fastened to the lower surface of the intermediate step portion of the movable plunger 10. In addition, the lower end of the upper spring 18B is secured to the upper surface of the intermediate step portion of the movable plunger 10, and the upper end thereof is secured to the lower surface of the protruding portion of the cylindrical member 13. Thereby, a pump chamber 19 is formed in the guide hole 1 3 A between the inlet valve seat 14 and the exhaust valve seat 11 of the cylindrical member 13. In addition, 20 represents a cylindrical yoke made of a magnetic material and opening at both ends. The upper end thin wall portion of the yoke 20 is riveted inward to fix the inflow joint 17 and the upper magnetic pole plate 16 On the upper surface of the upper protruding portion 6 C of the bobbin 6, the lower end thin-walled portion of the yoke 20 is riveted inwardly, so that the lower magnetic plate 8 having the pump fixing core 2 is protruded downward from the bobbin 6. The lower surface of the portion 6B is fixed. According to the above description, the magnetic circuit of the pump is formed by the yoke 20-the upper magnetic pole plate 16 6_movable column plug 1 0-the pump fixed core 2-the lower magnetic pole plate 8-the yoke 20. At this time, a tubular member 3 made of a non-magnetic material is arranged between the fixed iron core 2 for the system and the fixed iron core 4 for the injection valve. Therefore, the pump 14 3] 2 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 The magnetic circuit has no magnetic leakage to the fixed iron core 4 for the injection valve. 21 denotes a pair of male terminal pins. The male terminal pins 21 are connected to the start winding and the terminal winding of the electromagnetic coil 7 and are embedded in the inner bottom of the pump connector 22 in a protruding manner. When the upper end thin wall portion of the vehicle iron 20 and the lower outer periphery of the inflow joint 17 are externally molded from a synthetic resin material, the above-mentioned coupling 22 is simultaneously formed. Then, the electromagnetic fuel pump P is fixedly disposed on the fixed iron core 2 for a pump projecting upward from the upper end 5A of the main body 5. Next, the electromagnetic fuel injection valve J is disposed at a lower portion of the injection valve fixed iron core 4 protruding downward from the lower end 5B of the main body 5. 30 indicates a bobbin. The bobbin 30 is formed of a synthetic resin material, and is composed of a cylindrical portion 30A, an upper protruding portion 30B, and a lower protruding portion 30C. The electromagnetic coil 3 is wound on the outer periphery of the cylindrical portion 3 OA. 1. 32 indicates a yoke made of a magnetic material, and a bobbin receiving hole 32A is recessed from the bottom formed at a substantially middle portion toward the upper side, and a valve body receiving hole 3 2 B is recessed downward. In addition, a coil bobbin 30 including an electromagnetic coil 31 is received from the upper opening of the yoke 32 toward the bobbin storage hole 3 2 A, and then, the upper surface of the upper protruding portion 3 0 B of the bobbin 30 and the injection valve The lower surface of the annular protruding portion 4D of the fixed iron core 4 is placed in contact with each other. In addition, 3 3 is a core made of a magnetic material, which is arranged in the cylindrical portion 30 of the bobbin 30 freely and is opposed to the lower end 4 B of the fixed core 4 for the injection valve. The core 3 3 passes through the spring 3 4 is energized in a direction away from the lower end 4 B of the injection valve fixed iron core 4 (lower in the figure). 15 312 / Invention Manual (Supplement) / 93-06 / 93107249 1238874 In this state, the upper thin-walled portion formed on the upper end of the yoke 32 faces the outer peripheral portion of the annular protruding portion 4D of the fixed core 4 for the injection valve. Riveted, the yoke 32 is fixed to the fixed core 4 for injection valve, and the upper opening of the yoke 32 is closed by the annular protruding part 4D of the fixed core 4 for injection valve, and is inside the coil housing receiving hole 3 2 A. A coil bobbin 30 and a core 33 having an electromagnetic coil 31 are arranged. 3 5 indicates a valve body having an injection hole 3 5 A at the lower end. A needle valve 3 6 is movably disposed in the valve body 3 5. The needle valve 36 includes a valve portion capable of opening and closing the injection hole 3 5 A. 3 6 A, the upper end of the needle valve 36 is fixed to the core 3 3. The core 3 3 and the valve body 3 5 having the needle valve 36 are inserted into the valve body receiving hole 3 2 B arranged in the yoke 3 2 from below, and the thin-walled portion of the lower end of the yoke 3 2 faces the valve body 3 The reduced-diameter portion 5 is riveted inward, and a valve body 35 having a needle valve 36 is housed in a valve body receiving hole 3 2 B of the yoke 32. Reference numeral 37 denotes a pair of male terminal pins. The male terminal pins 37 are connected to the start winding and the end winding of the electromagnetic coil 31 and are embedded in the inner bottom of the injection valve coupler 38 in a protruding manner. The above-mentioned injection valve coupler 38 is simultaneously formed when the outer wall of the upper end thin portion of the yoke 32 and the fixed core 4 for the injection valve 4 protruding from below the lower end 5B of the main body 5 are formed by a synthetic resin material. As a result, the electromagnetic fuel injection valve J is fixedly disposed on the fixed iron core 4 for an injection valve protruding downward from the lower end 5 B of the main body 5 and passes through the yoke 3 2 -annular projection 4 D -the fixed iron core 4 for the injection valve. The core 3 3-the yoke 3 2 forms a magnetic circuit of the electromagnetic fuel injection valve J. At this time, a tubular member 3 of 16 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 made of a non-magnetic material is disposed between the fixed iron core 4 for the injection valve and the fixed iron core 2 for the pump. The magnetic circuit does not leak magnetic flux to the fixed iron core 2 for the pump. The main body 5 in which the electromagnetic fuel pump P and the electromagnetic fuel injection valve J are integrally mounted is disposed on the engine in the following manner. Referring to Fig. 3, 40 denotes an intake pipe which is provided with an intake passage 41 penetrating therethrough. The downstream of the intake passage 41 is connected to the engine E, and the upstream thereof is connected to a throttle body described later. Further, a lower end portion of the yoke 32 of the fuel injection valve J and the wide body 35 are inserted into the intake pipe 40, and an injection valve support hole 42 opening into the intake passage 41 is opened at the same time. In addition, in the intake pipe 40, a main body support portion 40A is formed to protrude obliquely from the upper side, and an upper thread end 4 0 B of the main body support portion 40 A is provided with a female screw hole 40 C. On the other hand, an intake passage 44 is opened in the throttle body 43 described above, and the intake passage 44 is connected to the intake passage 41 of the intake pipe 40, and the intake passage 44 passes through a butterfly type throttle. The throttle valve 46 is opened and closed, and the throttle valve 46 is mounted on a throttle shaft 45 which is rotatably supported on the throttle body 43. The rotation operation of the throttle shaft 45 is performed by an operator. The upstream side of the intake passage 44 of the throttle body is connected to the air cleaner A. That is, clean air from which foreign matter has been removed by the air purifier A is supplied to the engine E through the intake passage 44 of the throttle body 4 3 and the intake passage 41 of the intake pipe 40. The amount of air to the engine E is determined in accordance with the degree of opening of the throttle valve 46 operated by the operator. The main body 5 having the fuel pump P and the fuel injection valve J is attached to the intake pipe in the following manner. 17 312 / Invention Specification (Supplement) / 93-06 / 93] 07249 1238874 That is, the mounting protrusion 5C of the main body 5 is disposed on the upper end surface 4 0 B of the main body support portion 40 A of the intake pipe 40 and includes fuel The lower end portion of the yoke 32 of the valve body 3 5 of the injection valve J is inserted into the injection valve support hole 42 arranged in the intake pipe 40. In the above state, the screw 47 is inserted into the mounting hole 5D of the mounting protrusion 5C, and the screw 47 is screwed from the internally threaded hole 40C of the main body support portion 40A. According to the above description, the main body 5 is fixedly mounted on the intake pipe 40. At this time, the lower end portion of the yoke 32 of the valve body 35 having the electromagnetic fuel injection valve J is supported by the injection valve support hole of the intake pipe 40. 4 2 within. Then, the injection hole 3 5 A opened in the lower end surface of the valve body 35 of the fuel injection valve J may be opened in the injection valve support hole 4 2, and the injection hole 3 5 A faces the intake pipe through the injection valve support hole 42. The intake passage 41 of 40 is opened in the inside. The fuel pipe is arranged as described below. That is, the fuel tank T in which the fuel is stored inside is connected to the fuel inflow path 18 opened in the inflow joint 17 of the fuel pump P through the fuel inflow pipe 48. In addition, 4 9 indicates a low-pressure-side fuel filter disposed in the fuel inflow pipe, and 50 indicates a filter disposed in the fuel tank T at the open end of the fuel inflow pipe 48. On the other hand, a female connector 22 of the fuel pump P is fitted with a female connector connected to the ECU (electronic control element) 51, and is electrically connected to the ECU 51 by a male terminal pin 21. In addition, the injection valve coupler 38 of the fuel injection valve J is also fitted with a female connector to be connected to the ECU 51, and is electrically connected to the ECU 51 through a female terminal pin 37. According to the fuel injection 18 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 device having the fuel supply device formed as described above, the engine is directed toward the ECU 51 toward the electromagnetic fuel pump P during the operation of the engine including the start operation of the engine When an electric signal is output, when the electromagnetic coil 7 of the electromagnetic fuel pump P is not energized, the movable plunger 10 is maintained in the first state of the elastic balance of the upper spring 1 8 B and the lower spring 1 8 A, and the pump chamber 19 is maintained at Small volume state. Next, when the electromagnetic coil 7 is energized, the movable plunger 10 is sucked and moved downward from the fixed iron core 2 for the pump, and is maintained in the second state. The chamber volume of the pump chamber 19 is increased in accordance with the movement, and is maintained in a large volume state. . Then, based on the electric signal output from the ECU 51 toward the electromagnetic coil 7, the movable plunger 10 performs a reciprocating motion corresponding to the electric signal, and the check valve is discharged in a state where the chamber volume of the pump chamber 19 is large. 12 closes the discharge valve seat 11 and the intake check valve 15 opens into the valve seat 14 so that the fuel in the fuel tank T enters the chestnut chamber 19 through the fuel inflow pipe 4 8. On the other hand, in a state where the chamber volume of the pump chamber 19 is small, the intake check valve 15 will enter. The valve seat 14 is closed, and the discharge check valve 12 is opened, and the pressure-rising fuel in the pump chamber 19 is discharged through the plunger core flow path 10 C toward the fuel discharge path 2 C. According to the above description, when the engine is operated including the engine starting operation, the pressure of the fuel in the fuel tank T rises in the pump chamber 19, and thereafter, the fuel is continuously discharged from the fuel discharge path 2C and passes through the fuel of the tubular member 3. The flow path 3 C is supplied toward the fuel flow path 4 C of the injection valve fixed core 4. On the other hand, the fuel injection valve J is the same as the electromagnetic fuel pump P, and outputs an electric signal from the ECU 51. When the electromagnetic coil 31 is energized, the core 3 3 is attracted toward the lower end 4 B of the fixed core 4 against the elastic force of the spring 3 4 The valve part 3 6 A of the needle valve 3 6 opens the injection hole 3 5 A. 19 312 / Invention Manual (Supplement) / 93-06 / 93107249 1238874 Therefore, the needle valve 3 6 opens the injection hole 3 5 A corresponding to the injection signal (power-on time) from the ECU 51 1 and is located in the fuel inflow path 4 C The fuel is supplied into the intake passage 41 of the intake pipe 40 through the injection hole 35A. In addition, the amount of air supplied to the engine E is controlled and supplied with the degree of opening of the throttle valve 46, and the controlled fuel supplied through the electromagnetic fuel injection valve J and the air controlled by the throttle valve 46 can be controlled. Perform appropriate operation of engine E. According to the fuel supply device of the present invention configured as described above, the fixed iron core 2 for the pump constituting the electromagnetic fuel pump P and the fixed iron core 4 for the injection valve constituting the electromagnetic fuel injection valve J are mechanically passed through the tubular member 3 made of a non-magnetic material. And the fuel discharge path 2 C of the fixed iron core 2 for the pump is connected to the fuel flow path 3 C of the tubular member 3 and the fuel flow path 4 C of the fixed iron core 4 for the injection valve, so it can be extremely reliably and easily The fuel is sealed from the electromagnetic fuel pump P toward the electromagnetic fuel injection valve J. In addition, since the fuel injection valve J is an electromagnetic fuel injection valve, the fuel injection from the fuel injection valve can be appropriately controlled by an electric signal from the ECU 51. At this time, since the electromagnetic fuel injection valve J is fixed in particular, The electromagnetic fuel pump P is fixedly disposed on the fixed iron core 4 for an injection valve protruding from the lower end 5 B of the main body 5, and the electromagnetic fuel pump P is fixedly disposed on the fixed iron core 2 for the pump protruding from the upper end 5 A of the main body 5. The installation of the fuel injection valve J and the main body 5 is extremely simple, and no special parts for installation are required. In the above description, since the fixed iron core 2 for a pump and the fixed iron core 4 for an injection valve can be joined by a tubular member 3 made of a non-magnetic material, a pump magnetic circuit having the fixed iron core 2 for a pump and an injection valve having the same can be used. The magnetic circuit of the injection valve of the fixed iron core 4 is completely magnetically isolated with 20 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874. In addition, since the electromagnetic fuel pump P and the electromagnetic fuel injection valve J are fixedly mounted on the main body 5 in advance, the single main body 5 can be mounted on the intake pipe 4 0 so that the fuel supply device can be mounted on the vehicle at once. It can greatly improve the mountability of the vehicle. This case is effective especially in the case where the installation space is limited, such as in a two-wheeled locomotive. In addition, in the fuel pipe, the fuel inflow path 18 of the electromagnetic fuel pump P and the fuel tank T can be connected through the fuel inflow pipe 48, so that the degree of freedom in the design of the fuel pipe can be increased, and the pipe connection work can be simplified. In addition, since the high-pressure fuel pipe connecting the electromagnetic fuel pump P and the electromagnetic fuel injection valve J passes through the fuel discharge path 2 C of the fixed core 2 for the pump, the fuel flow path 3 C of the tubular member 3, and the fuel of the fixed core 4 for the injection valve Since the inflow path 4C is formed, there is no need to particularly worry about the pressure resistance of the fuel pipe. In particular, the outer periphery of the fuel pipe from the electromagnetic fuel pump P toward the electromagnetic fuel injection valve J is surrounded by the main body 5. This is preferable as a fuel supply device for a two-wheeled vehicle from the viewpoint of damage and aesthetics. In addition, if the electromagnetic fuel pump P is used, the electromagnetic coil 7 itself generates heat 5 because the heat easily warms the electromagnetic fuel injection valve J. However, according to the fuel supply device of the present invention, the electromagnetic fuel pump P Since the heat transfer of the electromagnetic fuel injection valve J is reduced, the increase in the fuel temperature in the electromagnetic fuel injection valve J is suppressed, thereby suppressing the occurrence of steam in the fuel flowing in the electromagnetic fuel injection valve J, and the correct fuel can be continuously supplied. Into the intake pipe 40. At this time, if the material of the main body 5 is 21 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874 which is lower than the metal material, the fixed iron core for the pump is formed of a magnetic material and its interior is opened in the axial direction. There is a fuel discharge passage. The fixed iron core for the injection valve is formed by a magnetic material in the interior. A fuel inflow passage is provided in the axial direction. The pipe assembly is externally formed by the main body, and the pump is fixed from the main body to one side. The electromagnetic fuel pump is formed on the iron core, and the solenoid valve fuel injection is formed on the fixed iron core for the injection valve protruding from the main body to the other side, so that the pressure increase from the electromagnetic fuel pump to the electromagnetic fuel injection valve can be extremely reliably and easily achieved. The fuel is sealed, and the pressure resistance of the fuel pipe can be greatly improved. In addition, since the tube assembly for the pressure-increasing fuel is externally formed by the main body, it is not directly exposed to the atmosphere, so it is possible to suppress the collision of foreign objects, especially in the case of a two-wheeled locomotive where the fuel supply system is exposed externally. , Breakage when tilted, and can make the appearance concentrated. In addition, since the solenoid valve fuel pump is fixedly arranged on the fixed core for the pump of the tube assembly externally formed on the main body, and the electromagnetic fuel injection valve is fixedly arranged on the fixed core for the injection valve of the tube assembly, the solenoid valve fuel pump and electromagnetic fuel The installation of the injection valve with respect to the main body is extremely simple and does not require special parts for installation. In addition, a part of the magnetic circuit of the electromagnetic fuel pump is formed by a fixed iron core for the pump, and a part of the magnetic circuit of the electromagnetic fuel injection valve is formed by a fixed iron core for the injection valve. The tubular members made of magnetic material are joined, so the magnetic circuit of the electromagnetic fuel pump and the magnetic circuit of the electromagnetic fuel injection valve can be suppressed (the magnetic circuit can be isolated from each other). Because the electromagnetic fuel injection valve is used in the above description, especially Therefore, it is possible to appropriately control fuel injection through the fuel injection valve by an electric signal from the ECU, 29 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874. Since the electromagnetic fuel pump and the electromagnetic fuel injection valve are fixed to the main body in advance, the main body can be mounted on the intake pipe, so that the fuel supply device can be mounted on the vehicle at once, thereby improving the mountability. In addition, in the fuel pipe, the fuel inflow path of the electromagnetic fuel injection valve and the fuel tank can be connected through the fuel inflow pipe, so that the degree of freedom in designing the fuel pipe can be improved, and the connection operation of the pipe can be simplified. In addition, since the heat transfer from the electromagnetic fuel pump to the electromagnetic fuel injection valve is reduced due to the action of the main body, it is possible to suppress an increase in the fuel temperature in the electromagnetic fuel injection valve, thereby suppressing the flow of fuel in the electromagnetic fuel injection valve. Steam is generated and the correct fuel is continuously supplied into the intake pipe. In this case, it is more effective to use a synthetic resin material with a lower thermal conductivity than the metal material, such as nylon resin, epoxy resin, and polyphenylene sulfide. In addition, the electromagnetic fuel pump may be disposed away from the intake pipe by an amount corresponding to the thickness t of the main body. And the main body is arranged between the intake pipe and the electromagnetic fuel pump. This can suppress the temperature rise of the electromagnetic fuel recording caused by the heat of the intake pipe. In this way, the pump function in the electromagnetic fuel pump can be performed well, without causing any obstacle to the discharge performance, and a stable fuel can be supplied to the electromagnetic fuel injection. valve. In addition, it is possible to use an electromagnetic coil with low insulation, which can reduce the manufacturing cost of the electromagnetic coil. In addition, if a fuel chamber recess is integrally formed in the main body, the fuel chamber recess forms a fuel chamber for a pressure regulator, and the fuel chamber recess and the tubular member are connected by a pressure fuel inflow passage opened in the main body. 30 312 / Invention Instruction (Supplement) / 93-06 / 93107249 1238874 The flow path does not need to be specially equipped with a fuel chamber body with a fuel chamber recess and a pipe to the fuel chamber recess, and it is not necessary to mount the fuel chamber body on the main body. The number of parts is reduced, no connection work is required, and the main body with the pressure regulator can be compactly concentrated. In addition, if a buffer chamber recess is integrally formed in the main body, the buffer chamber recess forms a fuel chamber of a pulsation buffer, and the buffer flow passage opened in the main body connects the buffer chamber recess and the fuel flow path of the tubular member, The buffer chamber body having the buffer chamber recess and the tube facing the buffer chamber recess need not be specially provided, and the buffer chamber body does not need to be mounted on the main body. This reduces the number of parts and eliminates the need for connection work. In addition, if a pump coupler is integrally formed on the main body, the pump coupler has a male terminal pin connected to an electromagnetic coil constituting the electromagnetic fuel injection pump, and an injection valve coupler including the electromagnetic valve The convex terminal pin connected to the solenoid coil of the fuel injection valve can form two main bodies at the same time when the main body is formed by external molding, thereby reducing external molding dies and automatic molding operations. In addition, if the pump coupling and the injection valve coupling are disposed facing the same side of the main body, it is possible to easily perform the connection work of fitting the female coupling connected to the EC to the pump coupling and the injection valve coupling. At this time, since the female connector and the electrical wires connected to the ECU are pulled out in the same direction, the freedom of wiring design can be improved, and it is effective to apply to two-wheeled locomotive where space is limited. [Brief description of the drawings] Fig. 1 is a longitudinal sectional view of a pipe assembly used in the fuel supply device of the present invention. 31 312 / Invention Specification (Supplement) / 93-06 / 93107249 1238874. Fig. 2 is a longitudinal sectional view showing a first embodiment of a fuel supply device according to the present invention. Fig. 3 is a system diagram showing a state where the fuel supply device of the present invention is mounted on an engine. Fig. 4 is a longitudinal sectional view of a main part showing another embodiment of the fuel supply device of the present invention. Fig. 5 is a longitudinal sectional view of a main part showing another embodiment of the fuel supply device of the present invention. (Description of component symbols) A Air purifier D Pulsation damper E Engine J Fuel injection valve P Fuel pump R Pressure regulator T Fuel tank 1 Tube assembly 2 Pump fixed core 2 A Upper end 2B Lower end 2 C Fuel discharge path 2D Protruding part 2E Tie-down groove 32 312 / Invention specification (Supplement) / 93-06 / 93107249 1238874 3 Tubular member 3 A Upper end 3B Lower end 3 C Fuel flow path 4 Fixed iron core for injection valve 4 A Upper end 4B Lower end 4C Fuel inflow path 4D annular protrusion 5 main body 5 A upper end 5B lower end 5C mounting protrusion 5D mounting hole 6 coil bobbin 6 A cylindrical portion 6B lower protrusion 6C upper protrusion 7 electromagnetic coil 8 lower magnetic pole plate 9 unfilled tube 10 movable column Plug 1 0 A Intermediate stepped part 1 0 B Guide cylinder part 312 / Instruction manual (Supplement) / 93-06 / 93107249 1238874 1 0C Plunger flow path 11 Discharge wide seat 12 Discharge check valve 1 2A Discharge spring 13 Cylinder Component 1 3 A guide hole 14 valve seat 15 check valve 1 5A intake spring 16 upper pole plate 17 inflow connector 18 fuel inflow 1 8A lower spring 1 8B Spring 19 Pump room 20 Iron 2 1 Male terminal pin 22 Pump coupling 30 Coil frame 30A Cylindrical portion 30B Upper projection 30C Lower projection 31 Solenoid coil 312 / Instruction manual (Supplement) / 93-06 / 93107249 34 1238874 3 2 A Coil receiving hole 3 2 B Valve body receiving hole 33 Core 34 Spring 35 Valve body 3 5 A Injection hole 36 Needle valve 36A Valve part 37 Male terminal pin 38 Injection valve connector 40 Intake Tube 40 A Main body support 40B Upper end face 40C Internally threaded hole 4 1 Intake passage 4 2 Injection valve support hole 43 Throttle body 44 Intake passage 4 5 Throttle shaft 4 6 Throttle valve 4 7 Screw 48 Fuel inflow Pipe 4 9 Low-pressure side fuel filter 5 0 Strainer / screen 35
312/發明說明書(補件)/93-06/93107249312 / Invention Specification (Supplement) / 93-06 / 93107249