1257452 玖、發明說明： 【發明所屬之技術領域】 本發明為有關一種燃料噴射裝置，其係通過燃料泵使貯 存於燃料箱内的燃料的壓力上升，將該壓力上升的燃料通 過燃料喷射閥朝向引擎噴射以供給燃料，其特別為有關一 種由燃料泵和燃料喷射閥所構成的燃料供給裝置。 【先前技術】 習知燃料供給裝置已揭示於日本專利特開 2 0 0 1 — 2 2 1 1 3 7號公報中。特別是該公報的圖8已揭示如下。 即，柱塞泵和喷嘴以成一體連接設置，在構成柱塞泵的 泵主體的底端間隔件通過鉚接而固定地設置，喷嘴的筒體 的上方以螺絲釘安裝於該間隔件上。 另外，噴嘴包括入口節流噴嘴，該入口節流噴嘴使在壓 送行程的後期區域壓力上升的燃料通過及出口節流喷嘴， 該出口節流喷嘴用於使通過入口節流喷嘴的一部分燃料回 流，並噴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） 根據上述習知燃料供給裝置，喷嘴噴射通過入口節流的 燃料與通過出口節流的燃料之間的差量的燃料，而與根據 來自ECU的噴射信號進行燃料的喷射的習知電磁式的燃料 噴射閥（藉由螺線管線圈的通電時間來控制針閥的開口） 作比較，其難於供給無法對閥體進行電控制的正確的燃料。 6 312/發明說明書(補件)/93-06/93107061 1257452 此外，設置於柱塞栗内的電磁線圈乃本身發熱，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。 如上所述，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 >肖耗較少的區域是較不佳的。 還有，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，進氣管的溫度會大大地上升。 另一方面，喷嘴的前端部插入設置於進氣管内，如此則 與噴嘴呈一體形成的柱塞泵也接近進氣管而設置。 如上所述，進氣管中上升的溫度容易對柱塞泵產生作 用，而在溫度上升的柱塞泵内容易產生蒸汽。 如上所述，由於柱塞泵内的蒸汽的壓縮作用泵排出量容 易產生差異，所以泵性能難於保持穩定。 此外，在外力作用於柱塞泵、喷嘴中的任何一者之上 時，將使另一元件發生變形，所以在例如外力作用於柱塞 泵上時，該外力將通過柱塞泵的間隔件使噴嘴的筒體發生 變形，因而阻礙在筒體内移動的提升閥等的滑動部件的平 滑動作。 特別是，對於如摩托車，舷外機，通用機那樣的進氣管 在外部露出的情況下是較不佳的。 另外，必須專門配備一種固定機構，以便將由柱塞泵、 312/發明說明書(補件)/93-06/93107061 1257452 噴嘴所構成的燃料供給裝置固定於進氣管的固定部。 本發明的主要目的在於提供一種燃料供給裝置，該燃料 供給裝置可採用習知電磁式燃料噴射閥，進行正確的燃料 供給，並且簡化使容易安裝於引擎和具全體燃料管，特別· 是適合摩托車、舷外機及通用機，另外很少受到引擎氣氛 溫度的影響情況下，可抑制燃料泵和燃料喷射閥内的蒸汽 的產生，而進行正確的及穩定的燃料供給。 (解決問題之手段） 為達成上述目的，依據本發明的燃料供給裝置的第一特 徵，其為一種燃料供給裝置，其中在燃料喷射裝置中，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朝向引擎噴射供給，其被構成為具有： 燃料泵、燃料喷射閥及壓力調節器被一體安裝於一主體 上，並且通過設置於主體中的燃料流路，將燃料泵的燃料 排出通路、燃料噴射閥的燃料流入通路和壓力調節器的燃 料流入通路連接； 具有上述燃料泵、燃料喷射閥與壓力調節器的主體被安 裝於進氣管上，通過主體和進氣管支持的燃料喷射閥而朝 向進氣管内.開口的喷射孔。 根據該第一特徵’將燃料果、燃料喷射闊與壓力調郎為 成一體安裝於主體上，可通過主體内的燃料流路連接燃料 果的燃料排出通路、燃料嘴射閥的燃料流入通路和壓力調 節器的燃料流入通路。 藉由將主體安裝於進氣管上，燃料喷射閥被支持於進氣 8 312/發明說明書(補件)/93-06/93107061 1257452 管和主體之間，且燃料喷射閥的喷射孔朝向進氣管内部開 口而設置。 此外，燃料泵的燃料流入通路藉由配管而與燃料箱連 接，並且壓力調節器的返回燃料通路也藉由配管而與燃料 箱連接。 如此藉由將具有燃料粟、燃料喷射閥和壓力調節器的主 體固定設置於進氣管上，燃料供給裝置可被固定於固定部 上，而燃料泵和燃料箱及燃料箱和壓力調節器分別利用配 管連接，以此方式形成燃料管。 再者，燃料箱内的燃料係利用燃料泵而升壓，對從燃料 栗的燃料排出通路向主體的燃料流路内排出的燃料，藉由 壓力調節器根據預定的燃壓進行控制，該壓力調整的燃料 可對應於來自ECU的喷射信號經由電磁式的燃料喷射閥朝 向進氣管噴射供給正確的燃料。在燃料泵驅動時，燃料泵 的電磁線圈本身會發熱，但是該熱量通過主體卻減少，因 而被抑制對於燃料噴射閥進行熱傳導。 於是，可抑制在燃料喷射閥内部流動燃料溫度的上升， 進而減少燃料噴射閥内的蒸汽的產生。 此外，燃料泵係以對應於主體的規格而被設置於與進氣 管離開的位置，如此燃料泵不會因進氣管的熱量而造成其 溫度大大上升，可抑制燃料泵内的蒸汽的產生，因此可良 好地保持燃料泵的泵作用。 另外，依據本發明上述第一特徵，其提供第二特徵為， 上述燃料泵的燃料排出通路的縱軸心線、燃料喷射閥的燃 312/發明說明書(補件)/93-06/93 107061 1257452 料流入通路的縱軸心線及主體B的燃料流路的縱軸心線被 設置於同一直線上。 根據上述第二特徵，可提高從燃料泵通過燃料流路朝向 燃料喷射閥内部的燃料流的直進性，特別是可提高引擎啟 動時的燃料供給的反應性。 此外，依據本發明上述第一特徵，其提供第三特徵為， 上述燃料泵的燃料排出通路的縱軸心線和壓力調節器R的 燃料流入通路的縱軸心線乃經由燃料流路而被設置在同一 直線上，並且燃料噴射閥的燃料流入通路的縱軸心線與燃 料泵的燃料流出通路的縱軸心線經由燃料流路而被設置成 交叉。 根據上述第三特徵，從燃料泵排出的燃料容易通過燃料 流路立即作用於壓力調節器的燃料室内，因此在沒有時間 延遲的情況下瞬間實現燃料流路内的燃料的壓力調整作 用，可進一步提高從燃料喷射閥喷射的燃料的控制性。 還有，由於在燃料噴射閥運作時，從燃料喷射閥的燃料 流入通路朝向上游側而產生的脈動壓力會主動地在燃料流 路中發生衝突，所以可有效地在燃料流路内使脈動壓力衰 減，如此藉由燃料喷射閥而減小燃料喷射閥的上游側的主 體、燃料管等的脈動傳遞，可抑制伴隨振動的噪音的發生。 再者，依據本發明在上述第一特徵，其提供第四特徵 為，上述壓力調節器的燃料室凹部為一體形成於主體上。 根據第四特徵，可提供如下的廉價的燃料供給裝置，其 不必專門配備形成壓力調節器的燃料室凹部的燃料室體， 10 312/發明說明書(補件)/93-06/93107061 1257452 可削減零件數量與燃料室體相 地將裝置整體集中。 另外，依據本發明上述第一 主體的燃料流路中設置有高壓 的燃料流入通路和壓力調節器 壓側燃料過濾器的下游側的燃 根據上述第五特徵，由於將 除異物的乾淨燃料供給燃料噴 長期穩定地使用這些裝置。另 置於主體上，如此可提高高壓 度，並可提高過濾面積的選擇 燃料過濾器的安裝和拆下的維 此外，本發明的第六特徵為 中在燃料喷射裝置中，藉由燃 力上升，將該壓力上升的燃料 射供給，在主體上一體安裝有 調節器與脈動阻尼器，並且藉 路，將燃料泵的燃料排出通路 壓力調節器的燃料流入通路與 連接’具有上述燃料果、燃料 阻尼器的主體被安裝於進氣管 持的燃料喷射閥的'射孔朝向 根據上述第六特徵，藉由將 料泵、燃料喷射閥、壓力調節 312/發明說明書(補件)/93-06/93107061 對主體的安裝作業並可緊湊 特徵，其提供第五特徵為， 側燃料過濾器，燃料噴射閥 的燃料流入通路為開口於南 料流路内。 已利用高壓側燃料過濾器去 射閥和壓力調節器，所以可 外，高壓側燃料過濾器被設 側燃料過濾器的設置的自由 的自由度，且可提高高壓側 修性。 提供一種燃料供給裝置，其 料果使燃料箱内的燃料的壓 通過燃料喷射閥朝向引擎噴 燃料泵、燃料喷射閥、壓力 由設置於主體B中的燃料流 燃料喷射閥燃料流入通路、 脈動阻尼器的燃料流入通路 喷射閥、壓力調節器與脈動 上，通過主體和進氣管所支 進氣管内開口。 主體安裝於進氣管上，將燃 器、脈動阻尼器安裝於進氣 11 1257452 管上，並將燃料喷射閥支持於進氣管和主體之間，及將燃 料噴射閥的噴射孔朝向進氣管内開口而設置。 另外，藉由配管將燃料泵的燃料流入通路與燃料箱連 接，壓力調節器的返回通路也以配管方式與燃料箱連接。 此外，燃料箱内的燃料的壓力通過燃料泵而上升，藉由 燃料泵的燃料排出通路被排出到主體的燃料流路内。另 外，該燃料利用壓力調節器以預定的燃壓來進行控制，而 燃料流路内產生的脈動壓力則藉由脈動阻尼器主動地衰 減。 於是，將以預定壓力調整並且有效地使脈動壓力衰減的 燃料被供應至電磁式的燃料噴射閥，藉由燃料喷射閥將與 ECU的噴射信號相對應的正確量的燃料供應至進氣管。 還有，在上述說明中，藉使脈動壓力大大地衰減，以通 過燃料噴射閥，更進一步地抑制上游側的主體、燃料管等 的振動。 再者，如同上述第一特徵，可抑制燃料噴射閥内的蒸汽 的產生和燃料系内的蒸汽的產生，藉此可由電磁式的燃料 噴射閥供給正確的燃料並使燃料泵保持良好的泵性能。 另外，本發明依據上述第六特徵，其第七特徵為於上述 壓力調節器的燃料室凹部與脈動阻尼器的燃料室凹部為一 體形成於主體上。 根據上述第七特徵，不必專門配備形成壓力調節器的燃 料室凹部的燃料室體和形成脈動阻尼器的阻尼室的阻尼室 體，可降低零件數量，減少燃料室體和阻尼室體安裝於主 12 312/發明說明書(補件)/93-06/93107061 1257452 體的作業，可有助於降低燃料供給裝置的製造成本，並可 緊湊地將整個裝置集中。 此外，依據本發明上述第一或第六特徵，其第八特徵在 於上述燃料喷射閥的燃料流入通路的縱軸心線、脈動阻尼 為的燃料流入通路的縱轴心線措由主體的燃料流入通路而 被設置於同一直線上，並且燃料泵的燃料排出通路的縱軸 心線與壓力調節器的燃料流入通路的縱軸心線藉由燃料流 路而被設置於同一直線上。 根據上述第八特徵，因利用燃料喷射閥的驅動而從燃料 喷射閥的燃料流入通路朝向上游側的脈動壓力乃通過燃料 流路被立即作用於脈動阻尼器，因此可更進一步有效地衰 減脈動壓力。 另一方面，從燃料泵的燃料排出通路朝向燃料流路内排 出的燃料容易立即作用於壓力調節器，因而可瞬間進行燃 料流路内的燃料的壓力調整作用。 於是，藉由燃料喷射閥可將正確的燃料朝向進氣管内喷 射供給，如此可更進一步地抑制主體、燃料管等的振動。 此外，依據本發明第一或第六特徵，其第九特徵在於利 用合成樹脂材料形成上述主體。 根據上述第九特徵，由於所使用之材料，其熱傳導性為 低於金屬材料者，因此可抑制燃料泵的電磁線圈產生的熱 量造成的燃料喷射閥的溫度上升和進氣管的熱量造成的燃 料泵的溫度上升，而保持穩定的燃料泵的排出性能並可從 燃料喷射閥進行正確及穩定的燃料供給。 13 312/發明說明書(補件)/93-06/93107061 1257452 還有，依據本發明第一或第六特徵，其第十特徵在於， 設置有與設置於上述燃料泵内的電磁線圈連接的耦合器， 和與設置於燃料喷射閥内部的電磁線圈連接的耦合器，係 朝向同一外周方向而設置。 根據上述第十特徵，可極容易地並在極短時間内進行燃 料泵的耦合器與和外部電源連接的凹型連接件的連接作 業，及燃料噴射閥的耦合器與和外部電源連接的凹型連接 件的連接作業，因而可提高電氣連接作業。 再者，依據本發明第一或第六特徵，其第十一特徵在於 低壓側燃料被一體安裝於上述燃料泵的燃料流入通路中。 根據第十一特徵，由於低壓側燃料過濾器係藉由燃料泵 而被一體安裝於主體上，所以將主體固定於進氣管上之同 時可完成低壓側燃料過濾器的安裝。 因此可大大提高低壓側燃料過濾器的安裝性。 【實施方式】 (實施例） 以下利用圖1來說明本發明燃料供給裝置的一個實施 例，其中該燃料供給裝置係由燃料泵P、燃料喷射閥J、主 體B及壓力調節器R所構成。 燃料泵P係如下所形成。 1表示線圈架，其由筒狀的圓筒部1 A、下方凸緣部1B 和上方凸緣部1 C所構成，該下方凸緣部1 B從圓筒部1 A 的底端外周方向延伸，該上方凸緣部1 C從圓筒部1 A的頂 端外周方向延伸，在圓筒部1 A的外周則捲繞有電磁線圈2。 14 312/發明說明書(補件)/93-〇6/93107〇61 1257452 3表示固定鐵心，該固定鐵心係由磁性材料形成，其頂 端部分被設置成於線圈架1的圓兔部1 A的内周的下方部 分，而設置於線圈架1的下方凸緣部1 B的底面的環狀的底 側磁性板4 A (由磁性材料形成）的内周部，被設置成以磁 性方式連接於固定鐵心3的底端部分的外周。 在上述固定鐵心中’頂端部分向線圈架1的圓肉部1 A 内延伸而插入，底端部分從下側磁極板4A朝向更下方突出 地形成，從固定鐵心3的頂端朝向底端貫通設置有燃料排 出通路5。另夕卜，6A表示設置於固定鐵心3的底端部分的 外周的第一密封環，6B表示設置於固定鐵心3的頂端部分 的外周的第二密封環，該第二密封環6B壓靠於設置在線圈 架1的圓周部1 A的内周配置的無填料管7上。 該無填料管7以朝向線圈架1的上方凸緣部1 C的更上 方突出設置。 8表示活動插棒式鐵心，其由磁性材料形成，可滑動地 設置於無填料管7的内周，並且對向設置於固定鐵心3的 頂端，從該活動插棒式鐵心8内的中間部的上方而突出的 導向筒部8 A上從頂端向底端貫通形成有插棒式鐵心通路 8 B。另外，在該插棒式鐵心通路8 B的上方形成有朝向下方 的排出閥座9，並面向排出閥座9設置有排出逆止閥1 1。 藉由排出彈簧1 0 A，該排出逆止閥1 1被壓向排出閥座9。 1 2表示能夠以微小間隙滑動支持活動插棒式鐵心8的導 向筒部8 A的筒體元件，導向孔1 2 A的上方朝向筒體部件 1 2的頂端開口 ，該導向孔1 2 A形成於該筒體元件1 2上且 15 312/發明說明書(補件)/93-06/93107061 1257452 磁極板4 B朝向線圈架1的上方凸緣部1 C固定，通過該軛 鐵1 9的底端薄壁部朝向内部鉚接，將具有固定鐵心3的底 側磁性板4 A朝向線圈架1的下方凸緣部1 B固定。 如上所述，藉由輛鐵1 9 一頂側磁極板4 B —活動插棒式 鐵心8 —固定鐵心3 —底側磁極板4 A —扼鐵1 9而形成磁電 路。 此外，1 9 A表示另一零件的安裝片部，去除軛鐵1 9的一 部分，然後將其朝向底側彎曲形成。在該安裝片部1 9 A上 設置有安裝孔1 9 B。 2 0表示一對接腳，該接腳與電磁線圈2的初級繞組和末 級繞組連接，該接腳2 0在耦合器2 1的内底部突出埋設。 上述耦合器2 1，利用合成樹脂材料將軛鐵1 9的頂端薄 壁部和流入接頭1 5的下方外周進行自動模製時同時被形 成。 以下為說明燃料喷射閥J。 3 0表示合成樹脂材料形成的線圈架，其由圓筒部3 0 A、 上方凸緣部3 Ο B與下方凸緣部3 0 C構成，在圓筒部3 Ο A的 外周上纏繞電磁線圈3 1。 3 2表示由磁性材料形成的流入接頭，該流入接頭3 2包 括固定鐵心32B和流入管32C，該固定鐵心32B具有設置 於線圈架3 0的上方凸緣部3 Ο B上的頂側磁極板3 2 A，並且 從頂側磁極板3 2 A的底面的下方而突出，該流入管3 2 C則 從頂側磁極板3 2 A的頂面的上方而突出。 從流入管3 2的頂端朝向固定鐵心3 2 B的底端貫通設置 17 3 12/發明說明書(補件)/93-06/93107061 1257452 有燃料流入通路3 2 D ’在該燃料流入通路3 2 D内以面朝下 方地嵌入有環狀彈簧調整管3 3。 此外，在設置於流入管3 2的頂端附近的外周的環狀槽 内設置有第三密封環34，另在第三密封環34的下方的流 入管3 2的外周，設置有安裝用環狀槽3 2 E。該環狀槽3 2 E 的棱戴面形狀以呈D形切削的缺口圓形狀為佳。 以上為用於抑制燃料喷射閥J的旋轉。 此外，上述流入接頭的頂側磁極板3 2 A設置於線圈架3 0 的上方凸緣部3 Ο B上，並且固定鐵心3 2 B被插入設置於線 圈架30的圓筒部30A内。 3 5表示磁芯，其為可移動自如地設置於線圈架3 0的圓 筒部3 0 A内，並與固定鐵心3 2 B的底端面對向配置，藉由 彈簧3 6，將該磁芯3 5朝向離開固定鐵心3 2 B的方向偏置。 3 7表示由磁性材料形成的軛鐵，從基本形成於中間部的 底部朝向上方凹設有線圈架接收孔3 7 B，並且朝向下方凹 設有閥體接收孔3 7 C。 還有，在軛鐵3 7的線圈架接收孔3 7 B内，接收具有電 磁線圈3 1的線圈架3 0和流入接頭3 2的頂側磁性板3 2 A， 在該狀態中，將形成於軛鐵3 7的頂端的頂側薄壁部朝向頂 側磁極板32A的頂端向内部鉚接。 38表示在底端設置有喷射孔38A的閥體，在該閥體38 内，可移動地設置有針閥3 9，該針閥3 9設置有使喷射孔 3 8 A開閉的錐狀閥部3 9 A，該針閥3 9的頂端被固定於上述 磁芯3 5上。 18 312/發明說明書(補件)/93-06/93107061 1257452 上述磁芯3 5及具有針閥3 9的閥體3 8，從下方插入設置 於軛鐵3 7的閥體接收孔3 7 C内，將軛鐵3 7的底端的薄壁 部朝向閥體3 8的直徑縮小部向内部鉚接。 4 0表示一對接腳，該接腳與電磁線圈3 1的初級繞組和 末端繞組連接，該接腳4 0在耦合器4 1的内底部突出埋設。 上述耦合器4 1係在使用合成樹脂材料對軛鐵3 7的頂端 薄壁部和流入接頭3 2的下方外周進行自動模製時同時形 成。 還有，4 2表示設置於軛鐵3 7底端附近的外周所設置的 環狀槽内的第四密封環。 以下為說明壓力調節器R。 5 0表示上方呈開口帶底杯狀的燃料室主體，返回燃料通 路5 1從内底部朝向上方開口’並且燃料流入路5 2從燃料 室主體50的側壁朝向側方開口。 再者，上述燃料流入通路5 2設置於朝向燃料室主體5 0 的左側方突出形成的流入通路軸轂5 2 A中，在流入通路軸 轂5 2 A的外周，設置有環狀的安裝槽5 2 B，並且安裝有第 五密封環53。 另外，54表示彈簧室主體，該彈簧室主體呈帶底的杯狀 以封閉燃料室主體5 0的上方開口，在燃料室主體5 0的上 方開口與彈簧室主體54的下方開口之間設置有呈圓板狀 的例如隔膜（diaphragm) 55，藉由將彈簧室主體54的底 端外周朝向燃料室主體5 0的頂端外周鉚接而封閉兩個開 19 312/發明說明書(補件)/93-06/93107061 1257452 如上所述，利用隔膜5 5的底面和燃料室主體5 0分隔形 成燃料室5 6，及利用隔膜5 5的頂面和彈簧室主體5 4分隔 形成彈簧室5 7。 即，燃料室56和彈簧室57係利用隔膜55分隔形成， 返回燃料通路5 1已為開口向燃料室5 6内之上下方向中， 燃料流入通路5 2則為開口向其水平方向中。 此外，5 8表示面向返回燃料通路5 1於燃料室5 6内開口 部而設置並與隔膜5 5同步地移動的控制閥，藉由被壓縮而 設置於彈簧室5 7内的調節彈簧5 9，將該控制閥5 8朝向燃 料通路5 1的燃料室5 6的開口部偏置。 接下來說明主體Β。 主體Β包括從底端6 Ο Α的右侧方延伸之安裝臂部6 Ο Β， 從頂端6 0 C朝向底端6 Ο A於上下方向中貫通設置的燃料流 路6 1，及從朝向上述燃料流路6 1的中間部的右端6 0 D，於 水平方向中設置的燃料流路6 1。 此外，在上述燃料流路中，於主體B的頂端6 0 C開口的 燃料流路6 1形成可使從燃料泉P的底側磁極板4 A的下方 突出的固定鐵心3插入該流路的直徑，而於主體B的底端 6 Ο A開口的燃料流路6 1形成可使燃料喷射閥J的環狀槽 3 2 E的上方的流入管3 2 C插入該流路中的直徑。 本實施例中，在上方開口的燃料流路6 1係以大於在下 方開口的燃料流路6 1的直徑而形成，在燃料流路6 1的上 方附近形成有面向上方的臺階部6 Ο E。 還有，在主體B的右端6 0 D開口的燃料流路6 1形成可 20 3 12/發明說明書(補件)/93-06/93 107061 1257452 插入壓力調節器R的流入通路軸轂5 2 A的直徑。 再者，在上下方向中設置的燃料流路6 1被形成於同一 直線上，更具體地說，使燃料泵P的固定鐵心3插入的上 方開口的燃料流路6 1 ,與使燃料σ貧射闊J的流入管3 2 C插 入的下方開口的燃料流路6 1形成於同一直線上。 另夕卜，6 2表示第一内螺紋孔，該孔6 2朝向主體Β的頂 端6 0 C而設置用於安裝燃料泵，該孔6 3表示第二内螺紋 孔，該孔6 3朝向主體Β的底端6 Ο Α而設置用於安裝燃料喷 射閥，6 4表示以貫穿開設置於安裝臂部6 Ο B中的安裝孔。 此外，為了將壓力調節器R安裝於主體B上，設置於主 體B的右端6 0 D的壓力調節器安裝用的内螺紋孔被省略而 未示於圖中。 接著，在主體B上安裝燃料泵P、燃料噴射閥J和壓力 調節器R，燃料泵P如下述安裝於主體B上。 在開口於主體B的頂端6 0 C上的燃料流路61中，插入 有燃料泵P的固定鐵心3的下部，並且形成於底側磁極板 4 A的下方的固定鐵心3的凸緣部3 A被設置成與主體B的 頂端6 0 C上方接觸，在該狀態下，藉由軛鐵1 9的安裝片部 1 9 A的安裝孔1 9 B，將螺釘6 5與主體B的第一内螺紋孔6 2 螺合。1257452 发明Invention Description: [Technical Field] The present invention relates to a fuel injection device that raises a pressure of a fuel stored in a fuel tank by a fuel pump, and that the fuel whose pressure rises is directed toward the fuel injection valve The engine is injected to supply fuel, which is particularly related to a fuel supply device composed of a fuel pump and a fuel injection valve. [Prior Art] A conventional fuel supply device has been disclosed in Japanese Patent Laid-Open Publication No. 2000-221. In particular, Figure 8 of the publication has been disclosed as follows. Namely, the plunger pump and the nozzle are integrally connected, and the bottom end spacer of the pump main body constituting the plunger pump is fixedly provided by caulking, and the upper portion of the nozzle body is screwed to the spacer. Additionally, the nozzle includes an inlet throttling nozzle that passes a fuel that rises in pressure in a later region of the pressure feed stroke and an outlet throttling nozzle that is used to recirculate a portion of the fuel through the inlet throttling nozzle And injecting a fuel between the fuel passing through the inlet throttling nozzle and the fuel passing through the outlet throttling nozzle. SUMMARY OF THE INVENTION (Problems to be Solved by the Invention) According to the above-described conventional fuel supply device, the nozzle injects a fuel that is throttled between the inlet and the fuel that is throttled through the outlet, and the injection from the ECU In comparison with a conventional electromagnetic fuel injection valve that signals injection of fuel (the opening of the solenoid is controlled by the energization time of the solenoid coil), it is difficult to supply the correct fuel that cannot electrically control the valve body. 6 312/Invention Manual (Supplement)/93-06/93107061 1257452 Further, the electromagnetic coil provided in the plunger pump itself generates heat, and the heat is heated from the spacer constituting the plunger pump to the cylinder constituting the nozzle The temperature of the fuel flowing in the nozzle rises. As described above, steam is generated in the fuel flowing in the nozzle, which causes the amount of fuel injected toward the inside of the intake pipe to be uneven, or the supply of fuel to be interrupted. These conditions are particularly poor for engines with no-load operation, low-speed operation, and the like. Further, in the case of a long-time no-load operation of the engine, the temperature of the intake pipe is greatly increased when the load is high and the speed is low. On the other hand, the tip end portion of the nozzle is inserted into the intake pipe, and thus the plunger pump integrally formed with the nozzle is also disposed close to the intake pipe. As described above, the rising temperature in the intake pipe easily contributes to the plunger pump, and the steam is easily generated in the plunger pump whose temperature rises. As described above, the pump performance is difficult to maintain stability due to the difference in pump discharge amount due to the compression of the steam in the plunger pump. In addition, when an external force acts on any of the plunger pump and the nozzle, the other element will be deformed, so that, for example, when an external force acts on the plunger pump, the external force will pass through the spacer of the plunger pump. Since the cylinder of the nozzle is deformed, the smooth operation of the sliding member such as the poppet valve that moves in the cylinder is prevented. In particular, it is less preferable for an intake pipe such as a motorcycle, an outboard motor, or a general-purpose machine to be exposed outside. In addition, a fixing mechanism must be specifically provided to fix the fuel supply device composed of the plunger pump, 312/invention specification (supplement)/93-06/93107061 1257452 nozzle to the fixing portion of the intake pipe. SUMMARY OF THE INVENTION A primary object of the present invention is to provide a fuel supply device which can employ a conventional electromagnetic fuel injection valve for correct fuel supply and which is simplified for easy installation in an engine and has a whole fuel pipe, and is particularly suitable for motorcycles. Cars, outboards, and general-purpose machines, in addition to being rarely affected by engine atmosphere temperatures, can suppress the generation of steam in fuel pumps and fuel injection valves for proper and stable fuel supply. (Means for Solving the Problem) In order to achieve the above object, a first feature of the fuel supply device according to the present invention is a fuel supply device in which a pressure of a fuel in a fuel tank is raised by a fuel pump, The fuel whose pressure rises is supplied to the engine through the fuel injection valve, and is configured to have: the fuel pump, the fuel injection valve, and the pressure regulator are integrally mounted on a main body, and through a fuel flow path provided in the main body, a fuel discharge passage of the fuel pump, a fuel inflow passage of the fuel injection valve, and a fuel inflow passage of the pressure regulator; a main body having the fuel pump, the fuel injection valve, and the pressure regulator is mounted on the intake pipe through the main body and The fuel injection valve supported by the intake pipe faces the injection hole in the intake pipe. According to the first feature, the fuel fuel, the fuel injection width and the pressure are widely integrated on the main body, and the fuel discharge passage of the fuel fruit, the fuel inflow passage of the fuel nozzle, and the fuel injection passage of the fuel nozzle can be connected through the fuel flow path in the main body. The fuel regulator flows into the passage. By mounting the body on the intake pipe, the fuel injection valve is supported between the intake port 8 312 / invention specification (supplement) / 93-06 / 93107061 1257452 pipe and the body, and the injection hole of the fuel injection valve is oriented The inside of the trachea is open and set. Further, the fuel inflow passage of the fuel pump is connected to the fuel tank by piping, and the return fuel passage of the pressure regulator is also connected to the fuel tank by piping. Thus, by fixing the main body having the fuel mill, the fuel injection valve and the pressure regulator to the intake pipe, the fuel supply device can be fixed to the fixed portion, and the fuel pump and the fuel tank and the fuel tank and the pressure regulator are respectively The fuel pipe is formed in this way by piping connection. Further, the fuel in the fuel tank is boosted by the fuel pump, and the fuel discharged from the fuel discharge passage of the fuel pump to the fuel flow passage of the main body is controlled by the pressure regulator according to a predetermined fuel pressure. The adjusted fuel may be supplied with the correct fuel corresponding to the injection signal from the ECU via the electromagnetic fuel injection valve toward the intake pipe. When the fuel pump is driven, the electromagnetic coil of the fuel pump itself generates heat, but the heat is reduced by the main body, so that heat conduction to the fuel injection valve is suppressed. Thus, an increase in the temperature of the flowing fuel inside the fuel injection valve can be suppressed, thereby reducing the generation of steam in the fuel injection valve. Further, the fuel pump is disposed at a position away from the intake pipe in accordance with the specifications of the main body, so that the fuel pump does not greatly increase the temperature due to the heat of the intake pipe, and the generation of steam in the fuel pump can be suppressed. Therefore, the pumping action of the fuel pump can be well maintained. Further, according to the first feature of the present invention, the second feature is characterized in that the longitudinal axis of the fuel discharge passage of the fuel pump, the fuel injection valve 312/invention specification (supplement)/93-06/93 107061 1257452 The longitudinal axis of the material inflow passage and the longitudinal axis of the fuel flow path of the main body B are disposed on the same straight line. According to the second feature described above, the straightness of the fuel flow from the fuel pump to the inside of the fuel injection valve through the fuel flow path can be improved, and in particular, the reactivity of the fuel supply at the time of starting the engine can be improved. Further, according to the first feature of the present invention, the third feature is characterized in that the longitudinal axis of the fuel discharge passage of the fuel pump and the longitudinal axis of the fuel inflow passage of the pressure regulator R are via the fuel flow path. They are disposed on the same straight line, and the longitudinal axis line of the fuel inflow passage of the fuel injection valve and the longitudinal axis line of the fuel outflow passage of the fuel pump are disposed to intersect via the fuel flow path. According to the third feature described above, the fuel discharged from the fuel pump is easily applied to the fuel chamber of the pressure regulator through the fuel flow path, so that the pressure adjustment action of the fuel in the fuel flow path can be instantaneously realized without time delay, and further The controllability of the fuel injected from the fuel injection valve is increased. Further, since the pulsating pressure generated from the fuel inflow passage of the fuel injection valve toward the upstream side actively collides with the fuel flow path when the fuel injection valve operates, the pulsating pressure can be effectively made in the fuel flow path. In the damper, the pulsation transmission of the main body, the fuel pipe, and the like on the upstream side of the fuel injection valve is reduced by the fuel injection valve, and the occurrence of noise accompanying the vibration can be suppressed. Further, according to the first aspect of the present invention, the fourth feature is characterized in that the fuel chamber recess of the pressure regulator is integrally formed on the main body. According to the fourth feature, it is possible to provide an inexpensive fuel supply device which does not have to be specially equipped with a fuel chamber body which forms a recess of a fuel chamber of a pressure regulator, 10 312 / invention specification (supplement) / 93-06/93107061 1257452 can be reduced The number of parts is concentrated with the fuel chamber body as a whole. Further, according to the fifth aspect of the present invention, in the fuel flow path of the first main body, the high-pressure fuel inflow passage and the downstream side of the pressure regulator pressure-side fuel filter are provided, according to the fifth feature, the clean fuel for removing foreign matter is supplied to the fuel. The spray uses these devices stably for a long time. Further placed on the main body, which can increase the degree of high pressure, and can improve the filtration area. The sixth aspect of the present invention is that the fuel injection device is increased by the fuel power. Supplying the pressure-increasing fuel, integrally installing a regulator and a pulsation damper on the main body, and borrowing a path to connect the fuel inflow passage of the fuel discharge passage pressure regulator to the fuel inlet and the fuel The main body of the damper is mounted on the fuel injection valve of the intake pipe. The perforation direction is according to the sixth feature described above, by the feed pump, the fuel injection valve, the pressure regulation 312 / the invention specification (supplement) / 93-06 /93107061 The mounting work for the main body and the compact feature provides a fifth feature that the side fuel filter, the fuel inflow passage of the fuel injection valve is open in the south flow path. The high pressure side fuel filter has been used to remove the valve and the pressure regulator, so that the high pressure side fuel filter can be freely set by the side fuel filter and the high pressure side repairability can be improved. Provided is a fuel supply device which is configured to cause a pressure of fuel in a fuel tank to pass through a fuel injection valve toward an engine fuel injection pump, a fuel injection valve, a pressure from a fuel flow fuel injection valve disposed in the main body B, a fuel inflow passage, and a pulsation dampening The fuel of the device flows into the passage injection valve, the pressure regulator and the pulsation, and is opened through the main body and the intake pipe. The main body is mounted on the intake pipe, the burner and the pulsation damper are mounted on the intake pipe 11 1257452, and the fuel injection valve is supported between the intake pipe and the main body, and the injection hole of the fuel injection valve is directed toward the intake air. Set inside the tube. Further, the fuel inflow passage of the fuel pump is connected to the fuel tank by piping, and the return passage of the pressure regulator is also connected to the fuel tank by piping. Further, the pressure of the fuel in the fuel tank rises by the fuel pump, and is discharged into the fuel flow path of the main body through the fuel discharge passage of the fuel pump. Further, the fuel is controlled by a predetermined pressure using a pressure regulator, and the pulsating pressure generated in the fuel flow path is actively attenuated by the pulsation damper. Then, the fuel adjusted at a predetermined pressure and effectively attenuating the pulsation pressure is supplied to the electromagnetic fuel injection valve, and the fuel injection valve supplies the correct amount of fuel corresponding to the injection signal of the ECU to the intake pipe. Further, in the above description, the pulsation pressure is greatly attenuated, and the vibration of the main body, the fuel pipe, and the like on the upstream side is further suppressed by the fuel injection valve. Furthermore, as with the first feature described above, generation of steam in the fuel injection valve and generation of steam in the fuel system can be suppressed, whereby the correct fuel can be supplied by the electromagnetic fuel injection valve and the fuel pump can maintain good pump performance. . Further, according to the sixth feature of the present invention, the seventh feature is that the fuel chamber recess of the pressure regulator and the fuel chamber recess of the pulsation damper are integrally formed on the main body. According to the seventh feature described above, it is not necessary to specifically provide the fuel chamber body forming the recess of the fuel chamber of the pressure regulator and the damper chamber body of the damper chamber forming the pulsation damper, which can reduce the number of parts and reduce the mounting of the fuel chamber body and the damper chamber body to the main body. 12 312 / Invention Manual (Repair) / 93-06/93107061 1257452 The work of the body can help to reduce the manufacturing cost of the fuel supply device, and can concentrate the entire device compactly. Further, according to the above first or sixth feature of the present invention, the eighth feature is characterized in that the longitudinal axis of the fuel inflow passage of the fuel injection valve and the longitudinal axis of the fuel inflow passage of the pulsation damping are the fuel inflow of the main body The passages are provided on the same straight line, and the longitudinal axis of the fuel discharge passage of the fuel pump and the longitudinal axis of the fuel inflow passage of the pressure regulator are disposed on the same straight line by the fuel flow path. According to the eighth feature described above, since the pulsating pressure from the fuel inflow passage of the fuel injection valve toward the upstream side by the driving of the fuel injection valve is immediately applied to the pulsation damper through the fuel flow path, the pulsation pressure can be more effectively attenuated. . On the other hand, the fuel discharged from the fuel discharge passage of the fuel pump toward the fuel flow passage easily acts on the pressure regulator immediately, so that the pressure adjustment action of the fuel in the fuel passage can be instantaneously performed. Therefore, the fuel can be injected and supplied to the intake pipe by the fuel injection valve, so that the vibration of the main body, the fuel pipe, and the like can be further suppressed. Further, according to the first or sixth feature of the present invention, the ninth feature is that the main body is formed using a synthetic resin material. According to the ninth feature described above, since the material used has a lower thermal conductivity than the metal material, the temperature rise of the fuel injection valve and the heat of the intake pipe caused by the heat generated by the electromagnetic coil of the fuel pump can be suppressed. The temperature of the pump rises while maintaining a stable fuel pump discharge performance and a correct and stable fuel supply from the fuel injection valve. 13 312 / Inventive specification (supplement) /93-06/93107061 1257452 Further, according to the first or sixth feature of the present invention, the tenth feature is characterized in that the coupling is provided in connection with the electromagnetic coil provided in the fuel pump The coupler and the coupler connected to the electromagnetic coil provided inside the fuel injection valve are disposed toward the same outer circumferential direction. According to the above-described tenth feature, the coupling operation of the coupler of the fuel pump and the female connector connected to the external power source can be performed extremely easily and in a very short time, and the coupler of the fuel injection valve and the female connection to the external power source can be connected. The connection work of the parts can improve the electrical connection work. Further, according to the first or sixth feature of the present invention, the eleventh feature is that the low-pressure side fuel is integrally mounted in the fuel inflow passage of the fuel pump. According to the eleventh feature, since the low-pressure side fuel filter is integrally attached to the main body by the fuel pump, the installation of the low-pressure side fuel filter can be completed while the main body is fixed to the intake pipe. Therefore, the mountability of the low pressure side fuel filter can be greatly improved. [Embodiment] (Embodiment) An embodiment of a fuel supply device according to the present invention will be described below with reference to Fig. 1, wherein the fuel supply device is constituted by a fuel pump P, a fuel injection valve J, a main body B, and a pressure regulator R. The fuel pump P is formed as follows. 1 denotes a bobbin composed of a cylindrical cylindrical portion 1 A, a lower flange portion 1B, and an upper flange portion 1 C, and the lower flange portion 1 B extends from the outer peripheral direction of the bottom end of the cylindrical portion 1 A The upper flange portion 1 C extends from the outer circumferential direction of the distal end of the cylindrical portion 1 A, and the electromagnetic coil 2 is wound around the outer circumference of the cylindrical portion 1 A. 14 312 / invention specification (supplement) / 93-〇 6/93107 〇 61 1257452 3 denotes a fixed iron core which is formed of a magnetic material and whose tip end portion is provided to the rabbit portion 1 A of the bobbin 1 The inner peripheral portion of the annular bottom side magnetic plate 4 A (formed of a magnetic material) provided on the bottom surface of the lower flange portion 1 B of the bobbin 1 is disposed to be magnetically connected to the lower portion of the inner circumference. The outer circumference of the bottom end portion of the core 3 is fixed. In the fixed core, the tip end portion is inserted into the round meat portion 1 A of the bobbin 1 and inserted, and the bottom end portion is formed to protrude downward from the lower side magnetic pole plate 4A, and is disposed from the top end of the fixed iron core 3 toward the bottom end. There is a fuel discharge passage 5. In addition, 6A denotes a first seal ring provided on the outer circumference of the bottom end portion of the fixed core 3, and 6B denotes a second seal ring provided on the outer circumference of the tip end portion of the fixed core 3, and the second seal ring 6B is pressed against It is provided on the unfilled tube 7 disposed on the inner circumference of the circumferential portion 1 A of the bobbin 1. The unfilled tube 7 is protruded toward the upper side of the upper flange portion 1 C of the bobbin 1. 8 denotes a movable plunger, which is formed of a magnetic material, is slidably disposed on the inner circumference of the unfilled tube 7, and is opposed to the tip end of the fixed core 3 from the intermediate portion in the movable plunger 8 A plunger-type iron core passage 8B is formed through the top end to the bottom end of the protruding guide cylinder portion 8A. Further, a discharge valve seat 9 facing downward is formed above the plunger type iron passage 8B, and a discharge check valve 11 is provided facing the discharge valve seat 9. The discharge check valve 11 is pressed toward the discharge valve seat 9 by the discharge spring 10A. 1 2 indicates that the cylindrical member supporting the guide cylindrical portion 8 A of the movable plunger 8 can be slid with a slight gap, and the upper side of the guide hole 1 2 A opens toward the distal end of the cylindrical member 12, and the guide hole 1 2 A is formed. On the cylindrical member 1 2 and 15 312 / invention specification (supplement) / 93-06 / 93107061 1257452, the magnetic pole plate 4 B is fixed toward the upper flange portion 1 C of the bobbin 1 through the bottom of the yoke 19 The end thin portion is swaged toward the inside, and the bottom side magnetic plate 4 A having the fixed core 3 is fixed toward the lower flange portion 1 B of the bobbin 1. As described above, the magnetic circuit is formed by the iron 1 9 a top side magnetic pole plate 4 B - the movable plunger type core 8 - the fixed core 3 - the bottom side magnetic pole plate 4 A - the yttrium iron 19. Further, 1 9 A indicates a mounting piece portion of another part, a part of the yoke 19 is removed, and then bent toward the bottom side. Mounting holes 1 9 B are provided in the mounting piece portion 9 9 A. 2 0 denotes a pair of pins which are connected to the primary winding and the final winding of the electromagnetic coil 2, and the pins 20 are protruded and buried at the inner bottom of the coupler 2 1. The coupler 21 is formed by simultaneously molding the tip end thin portion of the yoke 19 and the lower outer periphery of the inflow joint 15 by a synthetic resin material. The following is a description of the fuel injection valve J. 30 denotes a bobbin formed of a synthetic resin material, which is composed of a cylindrical portion 3 0 A, an upper flange portion 3 Ο B and a lower flange portion 3 0 C, and an electromagnetic coil is wound around the outer circumference of the cylindrical portion 3 Ο A 3 1. 3 2 denotes an inflow joint formed of a magnetic material, the inflow joint 3 2 including a fixed core 32B having a top side magnetic plate provided on the upper flange portion 3 Ο B of the bobbin 30 and an inflow pipe 32C 3 2 A and protrudes from the lower surface of the bottom surface of the top side magnetic plate 3 2 A, and the inflow pipe 3 2 C protrudes from above the top surface of the top side magnetic plate 3 2 A. From the top end of the inflow pipe 3 2 toward the bottom end of the fixed core 3 2 B, there is a through hole 17 3 12 / invention specification (supplement) / 93-06 / 93107061 1257452 There is a fuel inflow passage 3 2 D ' in the fuel inflow passage 3 2 In the D, an annular spring adjusting tube 3 3 is fitted face down. Further, a third seal ring 34 is provided in an annular groove provided in the outer periphery of the vicinity of the tip end of the inflow pipe 32, and a ring for mounting is provided on the outer circumference of the inflow pipe 32 below the third seal ring 34. Slot 3 2 E. The shape of the edge of the annular groove 3 2 E is preferably a notched circular shape which is cut in a D shape. The above is for suppressing the rotation of the fuel injection valve J. Further, the top side magnetic pole plate 3 2 A of the inflow joint is provided on the upper flange portion 3 Ο B of the bobbin 30, and the fixed iron core 3 2 B is inserted into the cylindrical portion 30A provided in the bobbin holder 30. 3 5 denotes a magnetic core which is movably disposed in the cylindrical portion 30A of the bobbin 30 and disposed opposite to the bottom end surface of the fixed core 3 2 B by the spring 36 The core 35 is biased toward the direction away from the fixed core 3 2 B. 3 7 denotes a yoke formed of a magnetic material, and a bobbin receiving hole 3 7 B is recessed from a bottom portion formed substantially at the intermediate portion, and a valve body receiving hole 3 7 C is recessed downward. Further, in the bobbin receiving hole 37B of the yoke 37, the bobbin 30 having the electromagnetic coil 31 and the top side magnetic plate 3 2 A of the inflow joint 3 2 are received, in which state, a state will be formed. The top side thin portion of the tip end of the yoke 37 is riveted toward the inside of the top end of the top side magnetic pole plate 32A. 38 denotes a valve body provided with an injection hole 38A at the bottom end, and a needle valve 3 9 is movably provided in the valve body 38, and the needle valve 39 is provided with a tapered valve portion for opening and closing the injection hole 38 A. 3 9 A, the tip of the needle valve 39 is fixed to the above-mentioned magnetic core 35. 18 312/Invention Manual (Supplement)/93-06/93107061 1257452 The magnetic core 35 and the valve body 3 8 having the needle valve 39 are inserted into the valve body receiving hole 3 7 C provided in the yoke 37 from below. Inside, the thin portion of the bottom end of the yoke 37 is swaged toward the inside of the reduced diameter portion of the valve body 38. 4 0 denotes a pair of pins which are connected to the primary winding and the end winding of the electromagnetic coil 31, and the pins 40 are protruded and buried at the inner bottom of the coupler 41. The coupler 4 1 is simultaneously formed by automatic molding of the thin end portion of the yoke 37 and the outer periphery of the inflow joint 3 2 using a synthetic resin material. Further, 4 2 denotes a fourth seal ring provided in an annular groove provided on the outer periphery of the vicinity of the bottom end of the yoke 37. The following is a description of the pressure regulator R. Reference numeral 50 denotes a fuel chamber main body having an open bottomed cup shape, and the return fuel passage 51 opens upward from the inner bottom portion and the fuel inflow passage 52 opens from the side wall of the fuel chamber main body 50 toward the side. Further, the fuel inflow passage 52 is provided in the inflow passage boss 5 2 A which is formed to protrude to the left side of the fuel chamber main body 50, and is provided with an annular mounting groove on the outer circumference of the inflow passage boss 5 2 A. 5 2 B, and a fifth seal ring 53 is mounted. Further, reference numeral 54 denotes a spring chamber main body having a bottomed cup shape to close the upper opening of the fuel chamber main body 50, and between the upper opening of the fuel chamber main body 50 and the lower opening of the spring chamber main body 54 is provided. A diaphragm 55, for example, a diaphragm 55 is closed by staking the outer periphery of the bottom end of the spring chamber body 54 toward the outer periphery of the tip end of the fuel chamber body 50. 19 312 / Invention Specification (Supplement) / 93- 06/93107061 1257452 As described above, the fuel chamber 5 is separated by the bottom surface of the diaphragm 55 and the fuel chamber body 50, and the spring chamber 57 is formed by the top surface of the diaphragm 55 and the spring chamber body 54. That is, the fuel chamber 56 and the spring chamber 57 are formed by the diaphragm 55, the return fuel passage 51 has been opened in the upward direction in the fuel chamber 56, and the fuel inflow passage 52 has the opening in the horizontal direction. Further, reference numeral 5 8 denotes a control valve which is provided facing the opening portion of the return fuel passage 51 in the fuel chamber 56 and moves in synchronization with the diaphragm 55, and an adjustment spring 5 9 which is provided in the spring chamber 57 by being compressed. The control valve 58 is biased toward the opening of the fuel chamber 56 of the fuel passage 51. Next, the main body will be explained. The main body Β includes a mounting arm portion 6 Ο 延伸 extending from the right side of the bottom end 6 Ο , and a fuel flow path 6 1 penetrating from the top end 6 0 C toward the bottom end 6 Ο A in the up-and-down direction The right end 60D of the intermediate portion of the fuel flow path 6 1 is the fuel flow path 6 1 provided in the horizontal direction. Further, in the fuel flow path, the fuel flow path 61 opened at the tip end 60c of the main body B is formed such that the fixed iron core 3 protruding from the lower side of the bottom side magnetic plate 4A of the fuel spring P can be inserted into the flow path. The fuel flow path 161 having a diameter and opening at the bottom end 6 Ο A of the main body B forms a diameter into which the inflow pipe 3 2 C above the annular groove 3 2 E of the fuel injection valve J can be inserted. In the present embodiment, the fuel flow path 61 that is open at the upper side is formed larger than the diameter of the fuel flow path 61 that is open at the lower side, and the step portion 6 facing upward is formed in the vicinity of the upper side of the fuel flow path 61. . Further, the fuel flow path 6 1 opened at the right end of the main body B 0 0 D is formed as a 20 3 12/invention specification (supplement)/93-06/93 107061 1257452 into the inflow passage hub 5 2 of the pressure regulator R 2 The diameter of A. Further, the fuel flow paths 6 1 provided in the up and down direction are formed on the same straight line, more specifically, the fuel flow path 6 1 which is opened above the fixed iron core 3 of the fuel pump P is inserted, and the fuel σ is made lean. The fuel flow path 161 of the lower opening into which the inflow pipe 3 2 C of the widening J is inserted is formed on the same straight line. In addition, 6 2 denotes a first internally threaded hole, which is provided for mounting a fuel pump toward the top end 60 C of the main body, and the hole 63 represents a second internally threaded hole, the hole 63 facing the main body The bottom end 6 of the crucible is provided for mounting the fuel injection valve, and 6 4 is a mounting hole that is placed in the mounting arm portion 6 Ο B. Further, in order to attach the pressure regulator R to the main body B, the internally threaded hole for mounting the pressure regulator provided at the right end 60D of the main body B is omitted and is not shown in the drawing. Next, a fuel pump P, a fuel injection valve J, and a pressure regulator R are attached to the main body B, and the fuel pump P is attached to the main body B as follows. In the fuel flow path 61 that is opened at the top end 60C of the main body B, the lower portion of the fixed iron core 3 of the fuel pump P is inserted, and the flange portion 3 of the fixed iron core 3 formed below the bottom side magnetic pole plate 4A is formed. A is disposed in contact with the top end of the main body B 6 0 C. In this state, the first portion of the screw 6 5 and the main body B is provided by the mounting hole 1 9 B of the mounting piece portion 9 9 A of the yoke 19 The internally threaded hole 6 2 is screwed.
如上所述，將構成燃料泵P的固定鐵心3的下方被插入 到主體B的燃料流路6 1内，燃料泵P被直立設置支持於主 體B的頂端6 0 C上，並且安裝片部1 9 A以螺釘6 5螺合於主 體B上，如此燃料泵P可固定地安裝於主體B的頂端6 0 C 21 3 12/發明說明書(補件)/93-06/93107061 1257452 上。 還有，插入到燃料流路6 1内的固定鐵心3的外周與上 述燃料流路6 1的内周之間的氣體係利用第一密封環6 A而 保持密封。 接著，下述燃料噴射閥J係以如下方式安裝於主體B上。 在該燃料喷射閥J的環狀槽3 2 E (由呈D形切割等的缺 口圓環狀槽形成）内嵌合設置有一側開口的扣件6 6，接著 流入管3 2 C插入設置於在主體B的底端6 Ο A開口的燃料流 路61内，在該狀態下，通過以貫通設置於扣件6 6中的安 裝孔，將螺釘6 7與在主體B的底端6 Ο A開口的第二内螺紋 孔63螺合。 如上所述，藉將構成燃料噴射閥J的流入管3 2 C被插入 到主體B的燃料流路6 1，將燃料喷射閥J直立設置支持於 主體B的底端6 Ο A上，並且扣件6 6利用螺釘6 7而與主體 B的底端6 Ο A螺合，如此可抑制燃料喷射閥J的旋轉並將 其固定。 另外，插入到燃料流路6 1内部的流入管3 2 C的外周與 燃料流路6 1的内周之間的氣體係利用第三密封環3 4而保 持密封狀態。As described above, the lower side of the fixed iron core 3 constituting the fuel pump P is inserted into the fuel flow path 61 of the main body B, and the fuel pump P is erected and supported on the tip end 60C of the main body B, and the sheet portion 1 is mounted. 9 A is screwed onto the main body B with a screw 65, so that the fuel pump P can be fixedly mounted on the top end of the main body B 6 C 21 3 12 / invention specification (supplement) / 93-06/93107061 1257452. Further, the gas system interposed between the outer circumference of the fixed core 3 inserted into the fuel flow path 6 1 and the inner circumference of the fuel flow path 6 1 is kept sealed by the first seal ring 6 A. Next, the fuel injection valve J described below is attached to the main body B as follows. In the annular groove 3 2 E of the fuel injection valve J (formed by a notched annular groove formed by D-cut or the like), a fastener 6 6 having an opening is fitted, and then the inflow pipe 3 2 C is inserted and disposed. In the fuel flow path 61 in which the bottom end 6 Ο A of the main body B is opened, in this state, the screw 6 7 is connected to the bottom end 6 of the main body B by a mounting hole penetratingly provided in the fastener 66. The second internally threaded hole 63 of the opening is screwed. As described above, the inflow pipe 3 2 C constituting the fuel injection valve J is inserted into the fuel flow path 161 of the main body B, and the fuel injection valve J is erected and supported on the bottom end 6 Ο A of the main body B, and buckled The member 66 is screwed to the bottom end 6 Ο A of the main body B by the screw 67, so that the rotation of the fuel injection valve J can be suppressed and fixed. Further, the gas system interposed between the outer circumference of the inflow pipe 3 2 C and the inner circumference of the fuel flow path 61 in the inside of the fuel flow path 6 1 is kept in a sealed state by the third seal ring 34.
此外，壓力調節器R根據下述方式安裝於主體B上。在 壓力調節器R的安裝槽5 2 B (形成D形切割等的缺口圓環 狀槽）内嵌合設置有一側方開口的扣件6 8，接著，流入通 路軸轂5 2 A插入設置在開口於主體B的右端6 0 D的燃料流 路6 1内，在該狀態下，扣件6 8通過螺釘與開設於主體B 22 312/發明說明書(補件)/93-06/93107061 1257452 的右端6 0 D中的内螺紋孔螺合（該螺釘、内螺紋孔未示於 圖中）。 如上所述，藉將構成壓力調節器R的流入通路軸轂5 2 A 插入到主體B的燃料流路6 1中，將壓力調節器R直立設置 支持於主體B的右端6 0 D，並且扣件6 8利用螺釘與主體B 的右端6 0 D螺合，如此可抑制壓力調節器R的旋轉並將其 固定。 還有，插入到燃料流路6 1内的壓力調節器R的流入通 路軸轂5 2 A的外周與燃料流路6 1的内周之間的氣體係利用 第五密封環5 3保持密封。 由上述燃料泵P和燃料噴射閥J與壓力調節器R —體安 裝而成的主體B係以如下方式被設置於引擎上。 茲對圖2進行說明，7 0表示在内部貫通設置有進氣通路 71的進氣管，進氣通路71的下游與引擎E連接，其上游 則與後述的節流閥體7 5連接。 此外，在進氣管7 0中設置有喷射閥支持孔7 2，該喷射 閥支持孔7 2中插入燃料喷射闊J的軛鐵3 7的底端部和閥 體38，並且其朝向進氣通路71内開口 。另外，在進氣管 70中主體支持部73朝向斜上方突出地形成，而在主體支 持部7 3的頂端面7 3 A上正角處設置有啟動螺栓7 4。 另一方面，在上述的節流閥體7 5内設置有與進氣管7 0 的進氣通路7 1連接的進氣通路7 6，該進氣通路7 6利用蝶 型節流閥7 8而達成開關作用，該節流閥7 8安裝於可旋轉 地支持於節流閥體7 5上的節流閥軸7 7上。 23 312/發明說明書(補件)/93-06/93107061 1257452 該節流閥軸7 7的旋轉操作由操作者執行。 還有，上述節流閥體的進氣通路7 6的上游側乃連接至 空氣淨化器A。即，利用空氣淨化器A已去除異物的清潔 空氣乃通過節流閥體7 5的進氣通路7 6及進氣管7 0的進氣 通路71而被供應至引擎E。此時，朝供向引擎E的空氣量 係依據操作者操作節流閥7 8的打開程度而決定。 再者，具備有燃料泵P和燃料喷射閥J與壓力調節器R 的主體B係以如下方式安裝於進氣管70上。 即，主體B的安裝臂部6 0 B被設置於進氣管7 0的主體 支持部7 3的頂端面7 3 A上，而包含燃料喷射闊J的閥體 3 8的軛鐵3 7的底端部被插入設置於進氣管7 0的喷射閥支 援孔7 2内。在上述狀態中，螺栓7 4被插入安裝臂部6 0 B 的安裝孔6 4内，螺母7 9與從該安裝臂部6 0 B突出的啟動 螺栓7 4螺合。 如上所述，主體B被固定地安裝於進氣管70上，此時， 包含燃料喷射閥J的閥體3 8的軛鐵3 7的底端部被支持於 進氣管7 0的喷射閥支持孔7 2内。於是，開口於該燃料喷 射閥J的閥體3 8的底端面的喷射孔3 8 A也開口於喷射閥支 持孔7 2内，噴射孔3 8 A經由喷射閥支持孔7 2朝向進氣管 7 0的進氣通路71内開口。另外，燃料配管方式如下。即， 在内部貯存有燃料的燃料箱T和設置於燃料果P的流入接 頭1 5中的燃料流入通路1 6係藉由燃料流入管8 0而連接。 另外，8 1表示設置於上述燃料流入管内的低壓側燃料過 濾器，8 2表示設置於燃料流入管8 0的燃料箱T的開口端 24 312/發明說明書(補件)/93-06/93107061 1257452 的濾網。此外，壓力調節器R的返回燃料通路5 1和燃料箱 T係藉由返回燃料管8 3而連接。 此外，在燃料泵P的耦合器2 1中嵌合有與E C U (電子控 制元件）等的外部電源連接的凹型連接件，藉由接腳2 0 而達成電氣連接，此外，在燃料喷射閥J的耦合器4 1中嵌 合與圖中未示出的ECU等的外部電源連接的凹型連接件， 藉由接腳40而達成電氣連接。 上述ECU，凹型連接件未示於圖中。 根據具有上述燃料供給裝置的燃料喷射裝置，在包括引 擎啟動操作的引擎運轉時，從ECU朝向燃料泵P輸出電信 號，在燃料泵P的電磁線圈2非通電時，活動插棒式鐵心 8被保持在上彈簧17B與下彈簧17A的彈力平衡的第一狀 態中，而泵室1 8被保持在小容積狀態中。 接著，當電磁線圈2被通電時，活動插棒式鐵心8被吸 引朝向固定鐵心3向下方移動以保持在第二狀態中，泵室 1 8的室容積對應於該移動而增加保持在大容積狀態。 於是，依據ECU朝向電磁線圈2輸出的電信號，活動插 棒式鐵心8將對應於該電信號進行往復運動，在泵室1 8 的室容積較大的狀態中，排出逆止閥1 1會封閉排出閥座 9，而吸入逆止閥1 4會打開吸入閥座1 3，如此燃料箱T内 的燃料將通過燃料流入管8 0被吸入到泵室1 8内。 另一方面，在泵室1 8的室容積較小的狀態下，吸入逆 止閥1 4會封閉吸入閥座1 3，而排出逆止閥1 1會打開排出 閥座9，如此則在泵室1 8内呈壓力上升的燃料將藉由插棒 25 312/發明說明書(補件)/93-06/93107061 1257452 式鐵心流路8 B而朝向燃料排出通路5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内的燃料的壓力會在泵室1 8内上升，而壓力上升 的燃料將連續地從燃料排出通路5朝向主體B的燃料流路 6 1内供給。 此外，以預定的燃壓對通過上述燃料泵而壓力上升的燃 料流路6 1内的燃料壓力進行控制。 即，在燃料流路6 1内流動的燃料將通過水平方向的燃 料流路61及壓力調節器R的燃料流入路5 2而朝向壓力調 節器R的燃料室5 6内流入，當燃料充滿於燃料室5 6時將 使包括控制閥5 8的隔膜5 5朝向彈簧室5 7側移動。 還有，在施加於燃料室5 6上的燃料壓力與已被壓縮設 置於彈簧室57内的調節彈簧59的彈力，係在設定的壓力 下呈平衡的狀態中設定隔膜5 5的位置。 因此，則控制閥5 8對應於上述隔膜的位置而打開返回 燃料通路5 1，燃料室5 6内的燃料則從返回燃料通路5 1通 過返回燃料管8 3而返回燃料箱T内。 如上所述，在具有燃料室5 6的燃料流路6 1内的燃料壓 力可被控制至預定壓力，而經過壓力調整的燃料乃通過燃 料流路6 1被供應至燃料喷射閥J。 另一方面，在燃料噴射閥J中，與燃料泵P相同方式自 E C U輸出電信號’當電磁線圈3 1被通電’磁芯3 5將抵抗 彈簧3 6的彈力而被吸引朝向固定鐵心3 2 B，針閥3 9的錐 形閥部3 9 A則打開噴射孔3 8 A。 26 312/發明說明書(補件)/93-06/93107061 1257452 於是，針閥3 9將因應於來自E C ϋ的喷射信號（通電時 間）而打開喷射孔3 8 A，當位於主體B的燃料流路61内的 燃料被調整到預定壓力時，其會通過喷射孔3 8 A而被供應 至進氣管70的進氣通路71内。 再者，利用節流閥7 8的打開程度可對供給引擎的空氣 量進行控制供給，藉由供給燃料喷射閥J所供給的受到控 制的燃料和節流閥7 8所控制的空氣，可進行適於引擎的運 轉。 依據上述本發明燃料供給裝置，在主體B上預先形成安 裝有燃料泵P與燃料噴射閥J和壓力調節器R，藉由將一 個主體B安裝於進氣管7 0上，而一次地將燃料供給系統的 零件安裝於車輛上，可大大地提高車輛的組裝性。這一點 對於特別是安裝空間極有限的情形，例如機車是有效的。 另外，由於燃料管的連接僅可藉由燃料流入管8 0而將 燃料泵P的燃料流入通路1 6和燃料箱T連接，並藉由返回 燃料管8 3而對壓力調節器R的返回燃料通路5 1和燃料箱 T進行流路連接，因此可提高燃料管的設計自由度，並且 可提高管的連接作業。 此外，其中特別的是燃料喷射閥，其乃使用可將來自ECU 的電信號轉換為燃料流置的電磁式的燃料喷射閥J，由此 可保持習知燃料噴射閥的燃料控制性和可靠性。 還有，由於連接燃料泵P和燃料喷射閥J的高壓燃料 管，及延伸到壓力調節器R的高壓燃料管，係藉由主體B 内的燃料流路6 1所構成，因此對於燃料管的承受壓力不必 27 312/發明說明書(補件)/93-06/93107061 1257452 有特別的擔心。特別的是，壓力上升的燃料所通過的燃料 流路6 1被形成於主體B内，此對於燃料供給系統為直接地 在外部露出的機車係較佳。 換言之，即使在障礙物撞擊的情況下，仍將減低損傷的 風險，並且從外觀而言為較佳的。 再者，依據使用了電磁線圈2的燃料栗P ’在栗驅動時 電磁線圈2本身會發熱，而在直接設置有燃料泵P和燃料 噴射閥J之情形下，該電磁線圈2所產生的熱量將被施加 於燃料噴射閥J，趨使在燃料喷射閥J内流動的燃料溫度 上升，但是根據本發明，由於燃料泵P和燃料喷射閥J係 藉由主體B而連接，因此主體B會阻止朝向燃料噴射閥J 的熱傳導，以抑制燃料泵P的電磁線圈2對燃料噴射閥J 的加熱。 根據上述說明，在可抑制燃料噴射閥J内流動的燃料中 產生蒸汽的情況下，可將正確的燃料供應連續地到進氣管 7 0内。 此時，倘若主體B的材料使用熱傳導度低於金屬材料的 合成樹脂材料，例如尼龍樹脂、環氧樹脂及聚苯硫醚，則 效果更好。 另外，在引擎低速運轉或高負荷低速運轉時等的情況 下，進氣管7 0的溫度仍大大上升，但是根據本發明，燃料 泵P與燃料喷射閥J為非直接連接，而燃料泵P為藉由主 體B而被連接設置於燃料噴射閥J上。 於是，燃料泵P可在以相當於主體B的厚度t的量（圖 28 312/發明說明書(補件)/93-06/93107061 1257452 2所示）的尺寸距離進氣管70而設置。在進氣管70 料泵P之間設置有主體B。由此可抑制進氣管7 0的熱 造成燃料泵P的溫度上升。 根據上述說明，在燃料泵P内因抑制蒸汽的產生， 於進行燃料泵P内的泵作用，使其排出性能不受到任 礙，可將穩定的燃料供給燃料噴射閥J。此外，可使 緣性較低的電磁線圈2，以有效地降低電磁線圈的製 本。另外，如前面所述，如果利用合成樹脂材料形成 B，則會進一步增加上述效果。 此外，在裝載於車輛上時，將產生外力被施加於朝 方突出的燃料泵P，或朝向下方突出的燃料噴射閥J， 向側方突出的壓力調節器R的情況。例如，即使在外 施加於燃料泵P，及插入到開口於主體B頂端6 0 C的 流路6 1内的燃料泵P的固定鐵心3發生變形的情況_ 變形不會對燃料喷射閥J或壓力調節器R造成任何的 響，特別是對於上述設備在外部露出而設置的機車為 的。 還有，燃料泵P和燃料喷射閥J及壓力調節器R被 於作為共同的安裝元件的主體B上，因此可簡化固定 其等的固定機構。 再者，依圖1所示者，由於設置於燃料泵P的固定 3中的燃料排出通路5的縱軸心線X— X、燃料喷射閥 流入接頭3 2中的燃料流入通路3 2 D的縱軸心線Y — Y 體B中的燃料流路6 1的縱軸心線Z — Z被配置於同一 312/發明說明書(補件)/93-06/93107061 和燃 量所 有利 何阻 用絕 造成 主體 向上 或朝 力被 燃料 F，該 影 較佳 安裝 支持 鐵心 J的 及主 直線 29 1257452 護。 运有’考慮上述南壓側燃料過〉慮器8 4被設置於上述固 定鐵心3的燃料排出通路5内部或燃料喷射閥J的流入接 頭3 2的燃料流入通路3 2 D内的情況，但是如此的話，高壓 側燃料過濾器8 4的過濾面積會受到這些流路直徑的限 制，因而將難於獲得充分的過濾面積。 相對於上述情況，如果將高壓側燃料過濾器84設置於 燃料流路6 1内，則可在不受到上述限制的情況下選擇適合 的高壓側燃料過濾器。 再者，高壓側燃料過濾器的形狀不受上述實施例的限 制。 以下利用圖5對另一實施例進行說明。 此說明係僅針對其與圖1不同構成之處。 主體B的燃料流路乃如下方式形成。 從主體B的左端6 0 G朝向右端6 0 D設置有水平方向的燃 料流路6 1，而從主體B的底端6 Ο A朝向水平方向的燃料流 路6 1的内部設置有上下方向的燃料流路6 1。 此外，在開口於主體B的左端6 0 G的燃料流路6 1内插 入設置有燃料泵P的固定鐵心3，且在開口於主體B的右 端6 0 D的燃料流路6 1内插入設置壓力調節器R的流入通路 凸緣5 2 A，並在開口於主體B的底端6 Ο A的燃料流路6 1内 插入設置有燃料喷射閥J的流入接頭3 2。Further, the pressure regulator R is attached to the main body B in the following manner. A fastener 6 6 having one side opening is fitted into the mounting groove 5 2 B of the pressure regulator R (a notched annular groove forming a D-shaped cut or the like), and then the inflow passage hub 5 2 A is inserted and disposed. Opening in the fuel flow path 6 1 of the right end 60 D of the main body B, in this state, the fastener 6 8 is opened by the main body B 22 312 / invention manual (supplement) / 93-06/93107061 1257452 The female threaded hole in the right end 6 0 D is screwed (this screw, female threaded hole is not shown in the figure). As described above, by inserting the inflow passage hub 5 2 A constituting the pressure regulator R into the fuel flow path 61 of the main body B, the pressure regulator R is erected and supported at the right end 6 0 D of the main body B, and buckled The member 6 8 is screwed to the right end 60D of the main body B by screws, so that the rotation of the pressure regulator R can be suppressed and fixed. Further, the gas system between the outer circumference of the inflow passage boss 52 A and the inner circumference of the fuel flow path 161 of the pressure regulator R inserted into the fuel flow path 61 is kept sealed by the fifth seal ring 53. The main body B integrally assembled with the fuel pump P and the fuel injection valve J and the pressure regulator R is provided on the engine as follows. Referring to Fig. 2, reference numeral 70 denotes an intake pipe through which an intake passage 71 is bored, a downstream of the intake passage 71 is connected to the engine E, and an upstream thereof is connected to a throttle body 75 which will be described later. Further, an injection valve support hole 72 is provided in the intake pipe 70, and the injection valve support hole 72 has a bottom end portion of the yoke 37 and a valve body 38 into which the fuel injection width J is inserted, and which faces the intake air The passage 71 is open. Further, in the intake pipe 70, the main body supporting portion 73 is formed to protrude obliquely upward, and a starting bolt 714 is provided at a positive angle on the distal end surface 7 3 A of the main body supporting portion 73. On the other hand, in the above-described throttle body 75, an intake passage 76 connected to the intake passage 71 of the intake pipe 70 is provided, and the intake passage 76 uses a butterfly throttle 7 8 To achieve the switching action, the throttle valve 78 is mounted on a throttle shaft 77 that is rotatably supported on the throttle body 75. 23 312/Invention Manual (Supplement)/93-06/93107061 1257452 The rotation operation of the throttle shaft 7 7 is performed by an operator. Further, the upstream side of the intake passage 76 of the throttle body is connected to the air cleaner A. That is, the clean air from which the foreign matter has been removed by the air cleaner A is supplied to the engine E through the intake passage 76 of the throttle body 75 and the intake passage 71 of the intake pipe 70. At this time, the amount of air supplied to the engine E is determined in accordance with the degree of opening of the throttle valve 78 by the operator. Further, the main body B including the fuel pump P, the fuel injection valve J, and the pressure regulator R is attached to the intake pipe 70 as follows. That is, the attachment arm portion 60B of the main body B is provided on the distal end surface 73A of the main body support portion 73 of the intake pipe 70, and the yoke 37 of the valve body 38 including the fuel injection width J is provided. The bottom end portion is inserted into the injection valve support hole 7 2 provided in the intake pipe 70. In the above state, the bolt 7 4 is inserted into the mounting hole 64 of the mounting arm portion 60B, and the nut 7 9 is screwed with the start bolt 7 4 projecting from the mounting arm portion 60B. As described above, the main body B is fixedly mounted to the intake pipe 70, and at this time, the bottom end portion of the yoke 37 including the valve body 38 of the fuel injection valve J is supported by the injection valve of the intake pipe 70. Support hole 7 2 inside. Then, the injection hole 38 A opening to the bottom end surface of the valve body 38 of the fuel injection valve J is also opened in the injection valve support hole 7 2 , and the injection hole 38 A is directed toward the intake pipe via the injection valve support hole 7 2 The intake passage 71 of the 70 is opened. In addition, the fuel piping method is as follows. That is, the fuel tank T in which the fuel is stored and the fuel inflow passage 16 provided in the inflow joint 15 of the fuel fruit P are connected by the fuel inflow pipe 80. Further, 8 1 denotes a low-pressure side fuel filter provided in the fuel inflow pipe, and 8 2 denotes an open end 24 312 of the fuel tank T provided in the fuel inflow pipe 80 / invention specification (supplement) /93-06/93107061 Filter of 1257452. Further, the return fuel passage 51 of the pressure regulator R and the fuel tank T are connected by the return fuel pipe 83. Further, a female connector that is connected to an external power source such as an ECU (Electronic Control Element) is fitted in the coupler 2 of the fuel pump P, and electrical connection is achieved by the pin 20, and further, at the fuel injection valve J The female connector 41 is fitted with a female connector that is connected to an external power source such as an ECU (not shown), and is electrically connected by the pin 40. The above ECU, female connector is not shown in the figure. According to the fuel injection device having the fuel supply device described above, when the engine including the engine start operation is operated, an electric signal is output from the ECU toward the fuel pump P, and when the electromagnetic coil 2 of the fuel pump P is not energized, the movable plunger 8 is The first state in which the elastic force of the upper spring 17B and the lower spring 17A are balanced is maintained, and the pump chamber 18 is held in the small volume state. Next, when the electromagnetic coil 2 is energized, the movable plunger 8 is attracted downward toward the fixed core 3 to be held in the second state, and the chamber volume of the pump chamber 18 is increased to maintain a large volume corresponding to the movement. status. Then, according to the electric signal output from the ECU toward the electromagnetic coil 2, the movable plunger 8 will reciprocate corresponding to the electrical signal, and in the state where the chamber volume of the pump chamber 18 is large, the discharge check valve 1 will be discharged. The discharge valve seat 9 is closed, and the suction check valve 14 opens the suction valve seat 13, so that the fuel in the fuel tank T is sucked into the pump chamber 18 through the fuel inflow pipe 80. On the other hand, in a state where the chamber volume of the pump chamber 18 is small, the suction check valve 14 closes the suction valve seat 13, and the discharge check valve 1 1 opens the discharge valve seat 9, so that the pump is The fuel having a pressure rise in the chamber 18 is discharged toward the fuel discharge passage 5 by the plunger 25 312 / invention specification (supplement) / 93-06 / 93107061 1257452 type core flow path 8 B. According to the above description, at the time of engine operation including the engine start operation, the pressure of the fuel in the fuel tank T rises in the pump chamber 18, and the fuel whose pressure rises continuously flows from the fuel discharge passage 5 toward the body B. The flow path 6 1 is supplied. Further, the fuel pressure in the fuel flow path 61 that is increased in pressure by the fuel pump is controlled at a predetermined fuel pressure. That is, the fuel flowing in the fuel flow path 61 flows through the fuel flow path 61 in the horizontal direction and the fuel inflow path 52 of the pressure regulator R into the fuel chamber 56 of the pressure regulator R, when the fuel is full. The fuel chamber 56 will move the diaphragm 55 including the control valve 58 toward the spring chamber 57 side. Further, the position of the diaphragm 55 is set in a state in which the pressure of the fuel applied to the fuel chamber 56 and the biasing spring 59 which has been compressed in the spring chamber 57 are balanced under the set pressure. Therefore, the control valve 58 opens the return fuel passage 5 corresponding to the position of the diaphragm, and the fuel in the fuel chamber 56 is returned from the return fuel passage 51 to the fuel tank T through the return fuel pipe 83. As described above, the fuel pressure in the fuel flow path 61 having the fuel chamber 56 can be controlled to a predetermined pressure, and the pressure-adjusted fuel is supplied to the fuel injection valve J through the fuel flow path 61. On the other hand, in the fuel injection valve J, an electric signal "when the electromagnetic coil 31 is energized" is output from the ECU in the same manner as the fuel pump P. The magnetic core 35 is attracted toward the fixed core 3 2 against the elastic force of the spring 36. B. The conical valve portion 3 9 A of the needle valve 39 opens the injection hole 38 A. 26 312/Invention Manual (Supplement)/93-06/93107061 1257452 Thus, the needle valve 39 will open the injection hole 38 A in response to the injection signal (energization time) from the EC , when the fuel flow is located at the main body B When the fuel in the path 61 is adjusted to a predetermined pressure, it is supplied into the intake passage 71 of the intake pipe 70 through the injection hole 38 A. Further, the amount of air supplied to the engine can be controlled and supplied by the degree of opening of the throttle valve 78, and can be performed by supplying the controlled fuel supplied from the fuel injection valve J and the air controlled by the throttle valve 78. Suitable for the operation of the engine. According to the above-described fuel supply device of the present invention, the fuel pump P and the fuel injection valve J and the pressure regulator R are formed in advance on the main body B, and the fuel is supplied once by attaching one main body B to the intake pipe 70. The components of the supply system are mounted on the vehicle, which greatly improves the assembly of the vehicle. This is especially true for situations where the installation space is extremely limited, such as a locomotive. Further, since the fuel pipe is connected only by the fuel inflow pipe 80, the fuel inflow passage 16 of the fuel pump P is connected to the fuel tank T, and the return fuel of the pressure regulator R is returned by returning the fuel pipe 83. The passage 5 1 and the fuel tank T are connected by a flow path, so that the degree of freedom in designing the fuel pipe can be improved, and the connection work of the pipe can be improved. Further, among them, a fuel injection valve is specifically used, which uses an electromagnetic fuel injection valve J that can convert an electric signal from an ECU into a fuel flow, thereby maintaining fuel controllability and reliability of a conventional fuel injection valve. . Further, since the high-pressure fuel pipe connecting the fuel pump P and the fuel injection valve J and the high-pressure fuel pipe extending to the pressure regulator R are constituted by the fuel flow path 61 in the main body B, the fuel pipe is It is not necessary to withstand the pressure of 27 312 / invention manual (supplement) /93-06/93107061 1257452 there are special concerns. In particular, the fuel flow path 61 through which the pressure-increased fuel passes is formed in the main body B, which is preferable for the locomotive system in which the fuel supply system is directly exposed to the outside. In other words, even in the case of an impact of an obstacle, the risk of damage will be reduced and it is preferable from the appearance. Further, according to the fuel pump P' using the electromagnetic coil 2, the electromagnetic coil 2 itself generates heat when the pump is driven, and the heat generated by the electromagnetic coil 2 is directly provided with the fuel pump P and the fuel injection valve J. Will be applied to the fuel injection valve J, tending to increase the temperature of the fuel flowing in the fuel injection valve J, but according to the present invention, since the fuel pump P and the fuel injection valve J are connected by the main body B, the main body B is blocked The heat conduction toward the fuel injection valve J is to suppress the heating of the fuel injection valve J by the electromagnetic coil 2 of the fuel pump P. According to the above description, in the case where steam can be suppressed from being generated in the fuel flowing in the fuel injection valve J, the correct fuel supply can be continuously made into the intake pipe 70. At this time, if the material of the main body B is made of a synthetic resin material having a thermal conductivity lower than that of the metal material, such as a nylon resin, an epoxy resin, and a polyphenylene sulfide, the effect is better. In addition, in the case of low engine speed operation or high load low speed operation, the temperature of the intake pipe 70 is still greatly increased, but according to the present invention, the fuel pump P is indirectly connected to the fuel injection valve J, and the fuel pump P It is connected to the fuel injection valve J by the main body B. Thus, the fuel pump P can be disposed at a distance from the intake pipe 70 in a size corresponding to the thickness t of the main body B (shown in FIG. 28 312 / invention specification (supplement) / 93-06/93107061 1257452 2). A main body B is disposed between the intake pipe 70 and the material pump P. Thereby, the temperature of the fuel pump P can be suppressed from rising due to the heat of the intake pipe 70. According to the above description, in the fuel pump P, since the generation of steam is suppressed, the pumping action in the fuel pump P is performed, so that the discharge performance is not disturbed, and the stable fuel can be supplied to the fuel injection valve J. Further, the electromagnetic coil 2 having a lower margin can be used to effectively reduce the cost of the electromagnetic coil. Further, as described above, if B is formed using a synthetic resin material, the above effects are further increased. Further, when mounted on the vehicle, an external force is applied to the fuel pump P that protrudes in the upward direction, or the fuel injection valve J that protrudes downward, and the pressure regulator R that protrudes to the side. For example, even if it is externally applied to the fuel pump P, and the fixed iron core 3 inserted into the flow path 6 1 opened at the tip end 60 C of the main body B is deformed, the deformation does not affect the fuel injection valve J or the pressure. The regulator R causes any noise, especially for a locomotive that is exposed to the outside of the device. Further, the fuel pump P, the fuel injection valve J, and the pressure regulator R are used as the main body B of the common mounting member, so that the fixing mechanism for fixing the same can be simplified. Further, as shown in Fig. 1, the longitudinal axis X-X of the fuel discharge passage 5 provided in the fixed portion 3 of the fuel pump P, and the fuel inflow passage 3 2D of the fuel injection valve inflow joint 3 2 The vertical axis line Y - Y The longitudinal axis Z - Z of the fuel flow path 6 1 in the body B is arranged in the same 312 / invention specification (supplement) / 93-06 / 93107061 and the fuel consumption is all blocked The main body is upwardly or upwardly directed by the fuel F, and the shadow is preferably mounted to support the core J and the main line 29 1257452. The above-described south pressure side fuel passage device 8 is provided in the fuel discharge passage 5 of the fixed iron core 3 or in the fuel inflow passage 3 2 D of the inflow joint 3 2 of the fuel injection valve J, but In this case, the filtration area of the high pressure side fuel filter 84 is limited by the diameters of these flow paths, so that it is difficult to obtain a sufficient filtration area. With respect to the above, if the high pressure side fuel filter 84 is disposed in the fuel flow path 61, a suitable high pressure side fuel filter can be selected without being subjected to the above limitation. Further, the shape of the high pressure side fuel filter is not limited by the above embodiment. Another embodiment will be described below using FIG. This description is only for the difference between it and FIG. The fuel flow path of the main body B is formed as follows. The fuel flow path 6 1 in the horizontal direction is provided from the left end 6 0 G of the main body B toward the right end 60 D, and the fuel flow path 6 1 from the bottom end 6 Ο A of the main body B toward the horizontal direction is provided with the vertical direction. Fuel flow path 6 1. Further, the fixed iron core 3 provided with the fuel pump P is inserted into the fuel flow path 6 1 opening to the left end 60 G of the main body B, and is inserted into the fuel flow path 6 1 opening to the right end 60 D of the main body B. The pressure regulator R flows into the passage flange 5 2 A, and the inflow joint 3 2 provided with the fuel injection valve J is inserted into the fuel flow path 6 1 opened to the bottom end 6 Ο A of the main body B.
根據上述說明，燃料泵P的燃料排出通路5的縱軸心線 X 一 X與壓力調節器R的燃料流入通路5 2的縱軸心線W — W 32According to the above description, the longitudinal axis X-X of the fuel discharge passage 5 of the fuel pump P and the longitudinal axis W-W of the fuel inflow passage 52 of the pressure regulator R are W - W 32
312/發明說明書(補件)/93-06/93 107061 1257452 乃通過水平方向的燃料流路6 1而被設置於同一直線上。 迷有’燃料17貧射闊J的燃料流入通路3 2 D的縱轴心線 Y Y係根據通過上下方向的燃料流路6 1而與燃料果P的 燃料排出通路5的縱軸心線X — X交叉設置。 依據上述構成’從燃料栗P排出的燃料容易立即地進入 壓力調節器R的燃料室5 6内，如此可有效地進行燃料流路 6 1内的燃料壓力的調整。可在特別是引擎啟動後等的情況 下，加速在燃料室5 6内未儲存足夠燃料的狀態中的壓力調 整動作時間。 另一方面，在燃料喷射閥J驅動時，從燃料喷射閥J的 燃料流入通路3 2 D朝向上游側的脈動壓力係在上下方向的 燃料流路6 1内朝向上方（上游側）而作用，該脈動壓力在 水平方向的燃料流路6 1中發生衝突，造成該脈動壓力之衰 減。 根據上述說明，上述脈動壓力因難於作用於燃料泵P和 壓力調節器R，所以對燃料泵的排出作用和對壓力調節器R 的壓力調整作用產生很小的影響。 以下面利用圖6對另一實施例進行說明。 此說明係僅針對其與圖1不同構成之處。 8 5表示低壓側燃料過濾器，其乃如下述方式構成。 8 6表示過濾器外殼，該過濾器外殼呈帶底的杯狀，其為 下方開口並在側壁上具有燃料流入通路8 6 A，而8 7表示過 濾器殼體，其乃將上述外殼的下方開口封閉。 在上述過濾器殼體的中心部設置有在上下延伸的筒部 33312/Invention specification (supplement)/93-06/93 107061 1257452 is provided on the same straight line by the fuel flow path 61 in the horizontal direction. The longitudinal axis YY of the fuel inflow passage 3 2 D of the fuel 17 leans out J is based on the longitudinal axis X of the fuel discharge passage 5 of the fuel fruit P according to the fuel flow path 61 through the vertical direction. X cross setting. According to the above configuration, the fuel discharged from the fuel pump P easily enters the fuel chamber 56 of the pressure regulator R, so that the fuel pressure in the fuel flow path 161 can be effectively adjusted. The pressure adjustment operation time in a state where sufficient fuel is not stored in the fuel chamber 56 can be accelerated, particularly after the engine is started. On the other hand, when the fuel injection valve J is driven, the pulsating pressure from the fuel inflow passage 3 2 D of the fuel injection valve J toward the upstream side acts upward (upstream side) in the fuel flow path 61 in the vertical direction. This pulsation pressure collides in the horizontal fuel flow path 61, causing the pulsation pressure to be attenuated. According to the above description, since the pulsation pressure is hard to act on the fuel pump P and the pressure regulator R, the discharge action of the fuel pump and the pressure adjustment action of the pressure regulator R are less affected. Another embodiment will be described below using FIG. This description is only for the difference between it and FIG. 8 5 denotes a low-pressure side fuel filter which is constructed as follows. 8 6 denotes a filter housing which has a bottomed cup shape which is open below and has a fuel inflow passage 86 6 A on the side wall, and 8 7 denotes a filter housing which is below the outer casing The opening is closed. A cylindrical portion extending upward and downward is provided at a center portion of the filter housing.
3 12/發明說明書(補件)/93-06/93107061 1257452 8 7 A，而在該筒部8 7 A從頂端朝向底端開設有流路8 7 B。 再者，在下方延伸的筒部87A的外周上形成有内螺紋 870 另夕卜，過濾器殼體8 7的外周部分朝向過濾器外殼8 6的 外周的凸緣部鉚接於内部，由此，過濾器殼體8 7和過濾器 外殼8 6乃被密封地形成。 88表示呈筒狀的過濾體，呈平板狀的頂板88A和底板 8 8 B係藉由呈環狀的濾紙8 8 C而連接，在過濾體8 8内（濾 紙8 8 C内）插入設置有在過濾器殼體8 7的上方延伸的筒部 8 7 A。另外，藉由頂板8 8 A利用經壓縮設置於其與過濾器外 殼8 6的底部之間的彈簧8 9而被壓於過濾器外殼8 7上之方 式來固定過濾體88。 此外’在燃料栗P的上方突出的流入接頭1 5的頂端具 有凸緣部1 5 A，而設置於流入接頭1 5中的燃料流入通路1 6 通過内螺紋1 5 B開口於凸緣部1 5 A的頂端面。 還有，上述低壓側燃料過濾器藉由將筒部8 7 A的内螺紋 8 7 C與流入接頭1 5的内螺紋1 5 B螺合，使低壓側燃料過濾 器8 5螺合固定於燃料泵P的流入接頭1 5的凸緣部1 5 A上。 再有，低壓側燃料過遽器8 5的燃料流入通路8 6 A利用 燃料流入管80而與燃料箱T連接。 於是，當燃料泵P驅動時，該燃料箱T内的燃料通過燃 料流入管8 0和燃料流入通路8 6 A而流入到過濾、器外殼8 6 内，藉由過遽、體8 8的遽紙8 8 C，可將燃料中異物去除，然 後通過開口於過濾體8 8内的流路8 7 B將乾淨的燃料供向燃 34 312/發明說明書(補件)/93-06/93107061 1257452 料栗P的燃料流入通路1 6。 依上述實施例，低壓側燃料過濾器8 5被一體地設置於 燃料泵P上，燃料流入管8 0可將低壓側燃料過遽器8 5的 燃料流入通路8 6 A和燃料箱T連接，以簡化燃料流入管8 0 和簡化燃料管的連接作業。 另外，從進氣管7 0上拆下主體B，可將低壓側燃料過濾 器8 5 —次地從進氣管7 0向外取下，如此可提高特別是上 述過遽器的維護作業。 此外，由於低壓側燃料過濾器8 5被直接設置於燃料泵P 上，因此可藉由具低壓側燃料過濾器8 5内的燃料而達到將 燃料泵P冷卻的效果。 以下利用圖7對本發明再另一實施例進行說明。 此外，與圖1相同的零件使用同一符號，惟省略其說明。 在主體B中，從頂端9 Ο A朝向底端9 Ο B貫通設置有上下 方向的燃料流路9 1，燃料泵P的固定鐵心3的下方插入到 開口於頂端9 Ο A的燃料流路9 1中，上述燃料泵P固定立設 於頂端9 Ο A上。此夕卜，燃料噴射閥J的流入管3 2 C的上方 插入到開口於底端9 Ο B的燃料流路9 1中，而該燃料噴射閥 J被固定直立設置於主體B的底端90B上。 在高壓側燃料過濾器8 4中將燃料泵P的燃料排出通路5 排出的燃料中的異物去除，然後燃料通過燃料流路9 1被供 應至燃料噴射閥J的燃料流入通路3 2 D内。 9 2 A表示形成壓力調節器R的燃料室9 2的燃料室凹部， 其凹部被設置於主體B的右端90C。另外，對於燃料朝向 35 312/發明說明書(補件)/93-06/93107061 1257452 壓力調節器R的燃料室9 2的送入，係藉由從上下方向的燃 料流路9 1分支的右水平方向的燃料流入通路9 2 B與燃料室 92内連通而達成。 還有，上述燃料室凹部的右方的開口部係藉由隔膜55 及彈簧室主體54而封閉，並由隔膜55的左側面和燃料室 凹部92A形成燃料室92，及由隔膜55的右側面和彈簧室 主體54形成彈簧室57。 再者，返回燃料通路5 1被設置於主體B中，其一端開 口於燃料室9 2内，另一端則朝向大氣側開口。 另外，在主體B的左端90D於凹處設置有燃料室凹部 9 3 A，該燃料室凹部9 3 A形成脈動阻尼器D的燃料室9 3， 燃料室凹部9 3 A的左端9 0 D的開口部藉由隔膜9 4和彈簧室 主體95A封閉，由隔膜94的右側面與燃料室凹部93A形成 燃料室9 3，及由隔膜9 4的左側面與彈簧室主體9 5 A形成 彈簧室9 5。 在上述彈簧室9 5内，以壓縮設置阻尼彈簧9 6，根據該 構成，利用阻尼彈簧9 6的彈力，使隔膜9 4朝向燃料室9 3 側偏置。 此外，脈動阻尼器D的燃料室9 3係通過左水平方向的 燃料流入通路9 3 B而與上下方向的燃料流路9 1連接。 具有上述燃料泵P、燃料噴射閥J、壓力調節器R和脈 動阻尼器D的主體B，其固定方式為，將主體B的安裝臂 部6 Ο B設置於進氣管7 0的主體支持部7 3的頂端面7 3 A上， 並且將啟動螺栓7 4插入安裝孔6 4中，然後，利用螺母7 9 36 3丨2/發明說明書(補件)/93-06/93 107061 1257452 將該螺栓與進氣管70螺合。 根據上面說明，具有燃料噴射閥J的閥體3 8的軛鐵3 7 的前端部被插入到進氣管7 0的噴射閥支持孔7 2内，並藉 由進氣管7 0和主體B支持燃料噴射閥J。另一方面，燃料 泵P的燃料流入通路1 6係藉由燃料流入管8 0與燃料箱T 連接，而壓力調節器R的返回燃料通路5 1係藉由返回燃料 管8 3而與燃料箱T連接。 根據上述燃料供給裝置，在包括引擎啟動的運轉時，燃 料箱T内的燃料係通過燃料流入管8 0、燃料流入通路1 6 而被吸入到燃料泵P内，在燃料泵P的泵室1 8中壓力上升 的燃料則從燃料排出通路5朝向主體B的燃料通路9 1内排 出。 還有，在高壓側燃料過遽器8 4中將該壓力上升的燃料 中所包含的異物去除，一部分乾淨燃料將通過上下方向的 燃料流路9 1和右水平方向的燃料流入通路9 2 B被供向壓力 調節器R的燃料室9 2内並充滿於燃料室9 2。另外，另一 部分乾淨燃料將通過上下方向的燃料流路9 1和左水平方 向的燃料流入通路9 3 B被供向脈動阻尼器D的燃料室9 3 並充滿燃料室9 3。 根據上述說明，如同前述實施例，藉由壓力調節器R的 壓力調整作用將依預定的燃料壓力調整的燃料供向燃料噴 射閥J的燃料流入通路3 2 D内，另一方面燃料室9 2内的剩 餘燃料則返回燃料通路5 1和返回燃料管8 3而流回到燃料 箱T内。 37 3 12/發明說明書(補件)/93-06/93107061 1257452 接著’通過從主體B的底端9 Ο B朝向向上方向的燃料流 路9 1和朝向脈動阻尼器D的燃料流入通路9 3 B係沿同一直 線延伸，燃料噴射閥J的流入管3 2 C的頂端被插入開口於 底端9 Ο B的燃料流路9 1中。 根據上述說明，燃料喷射閥J的燃料流入通路3 2 D的縱 軸心線Y — Y與脈動阻尼器D的燃料流入通路9 3 B的縱軸心 線S — S係通過燃料流路9 1而被設置於同一直線上。 根據上述說明，從燃料泵P的燃料排出通路5排出的壓 力上升的燃料容易通過設置於同一直線上的燃料流入通路 9 2 B作用於壓力調節器R的燃料室9 2内，可提高特別是引 擎啟動後的燃料壓力的壓力調整反應性。 另一方面，燃料噴射閥J啟動時產生的燃壓脈動可通過 燃料流入通路9 3 B快速地送入到脈動阻尼器D的燃料室9 3 中，由此可進一步提高燃壓脈動的阻尼效果。 還有，圖9表示本發明的燃料供給裝置的又一實施例。 在本實施例中，在主體B上設置燃料泵P、燃料喷射閥 J、脈動阻尼器和壓力調節器R的圖7中所示的燃料供給裝 置中安裝有圖6所示的低壓側燃料過濾器8 5。對於與上述 的組成相同的結構，使用同一符號。 根據本實施例，由於低壓側燃料過濾器8 5被一體設置 於燃料泵P上，燃料流入管8 0可將低壓側燃料過濾器8 5 的燃料流入通路8 6 A與燃料箱T連接，因而可簡化燃料流 入管8 0的連接作業。 另外，藉由從進氣管70拆下主體B而可將低壓側燃料 40 3 12/發明說明書(補件)/93-06/93 107061 1257452 過濾器8 5取下，可提高維修作業。 此外，由於將低壓側燃料過濾器8 5直接設置於燃料泵P 上，可有效地利用燃料來冷卻燃料泵。 還有，如果在圖7和圖9所示的實施例中，利用合成樹 脂材料形成主體B，且燃料泵P的耦合器2 1和燃料噴射閥 J的耦合器4 1向同一外周方向而設置，則可達到與圖1和 圖4等的前述實施例相同的效果。 再者，在本實施例中主體B被安裝於進氣管上，但是該 主體B也可安裝於節流閥體上，對於主體B被安裝於進氣 管等上的機構不受限於已述之實施例，另外，燃料泵包括 設置有電磁線圈之泵以利用電磁線圈使泵部實施泵作用。 (發明效果） 如上所述，依據本發明的第一特徵，其中在燃料噴射裝 置中，利用燃料泵使燃料箱内的燃料的壓力上升，使該壓 力上升的燃料通過燃料噴射閥噴射供向引擎，在主體上成 一體安裝有燃料泵、燃料噴射閥和壓力調節器，並且通過 設置於主體中的燃料流路而將燃料泵的燃料排出通路、燃 料喷射閥的燃料流入通路和壓力調節器的燃料流入通路連 接； 具有上述燃料泵、燃料喷射閥與壓力調節器的主體被安 裝於進氣管上，通過主體和進氣管支持的燃料噴射閥的喷 射孔朝向進氣管内開口 ，由此藉由主體被安裝於進氣管 上，將燃料泵、燃料喷射閥與壓力調節器一次地安裝於車 輛上，可提高車輛的組裝性，特別是對於安裝空間受到限 41 3 12/發明說明書(補件)/93-06/93107061 1257452 制的情況下為有效的。 此外，燃料配管可藉由燃料流入管連接燃料泵和燃料箱 及藉由回燃料管連接返回燃料通路與燃料箱而達成，如此 可提高燃料管的設計的自由度，並使連接作業容易。 另外，燃料喷射閥係使用電磁式的燃料噴射閥，可照原 樣保持現有的燃料嘴射閥的燃料控制性。 還有，由於高壓燃料管僅形成於主體内部，所以可進一 步提高耐壓可靠性，此特別是對用於燃料供給系統為在外 部露出的機車等的情況下而言係較佳的。 再者，由於在引擎運轉時，燃料泵的電磁線圈本身會發 熱，但是藉由主體可阻止朝向燃料噴射閥的熱傳導，因而 可抑制燃料噴射閥内的蒸汽的產生，如此可連續並穩定地 供給經由燃料喷射閥而噴射的燃料。 另外，由於燃料泵係以相當於主體的厚度尺寸下距離進 氣管而設置，因此可抑制該進氣管的熱量造成的燃料泵的 溫度上升，使燃料泵的排出性能呈穩定，並降低構成燃料 泵的電磁線圈的絕緣性。 此外，由於燃料泵、壓力調節器和燃料噴射閥全部被支 持於主體上，即使在外力作用於該各元件上時，仍不會間 接地損傷此等元件。 還有，由於燃料泵、壓力調節器和燃料噴射閥被安裝於 共同的安裝元件上，所以可簡化固定支持機構。 再者，依本發明的第二特徵，上述燃料泵的燃料排出通 路的縱軸心線、燃料喷射閥的燃料流入通路的縱軸心線和 42 312/發明說明書(補件)/93-06/93107061 1257452 反應性，並進一步提高壓力調節器的阻尼效果。 再者，依本發明的第九特徵，由於使用合成樹脂材料形 成上述主體，所以可進一步提高上述主體的隔熱效果，並 進一步有效地抑制燃料泵和燃料喷射閥的蒸汽的產生。 另外，依本發明的第十特徵，由於上述燃料泵内的電磁 線圈連接的耦合器，和與設置於燃料喷射閥内部的電磁線 圈連接的耦合器，係朝同一外周方向設置，所以可提高與 外部電源連接的凹型連接件的連接性。 此外，依本發明的第十一特徵，由於低壓側燃料過濾器 被一體地安裝於上述燃料泵的燃料流入通路中，所以燃料 流入管可將低壓側燃料過濾器的燃料流入通路和燃料箱連 接，以進一步簡化燃料配管，並且藉由將主體安裝於進氣 管上而可一次地將全部的構件設置於進氣管上。 【圖式簡單說明】 圖1為表示本發明燃料供給裝置的一個實施例的縱向剖 視圖。 圖2為本發明燃料供給裝置安裝於進氣管上的燃料喷射 裝置的整體系統圖。 圖3為表示圖1的固定鐵心、燃料喷射閥的燃料流入通 路及主體的燃料流路的關係的縱向剖視圖。 圖4為表示本發明燃料供給裝置的第二實施例的主要部 分縱向剖視圖。 圖5為表示本發明燃料供給裝置的第三實施例的主要部 分縱向剖視圖。 45 312/發明說明書(補件)/93-06/93107061 1257452 圖 6 為 表 示 本 發 明 燃 料 供 給 裝 分 縱 向 剖 視 圖 〇 圖 7 為 表 示 本 發 明 燃 料 供 給 裝 分 縱 向 剖 視 圖 〇 圖 8 為 表 示 本 發 明 燃 料 供 給 裝 分 縱 向 剖 視 圖 〇 圖 9 為 表 示 本 發 明 燃 料 供 給 裝 分 縱 向 剖 視 圖 〇 (元件符號說明） 1 線 圈 架 1 A 圓 筒 部 1 B 下 方 凸 緣 部 1C 上 方 凸 緣 部 2 電 磁 線 圈 3 固 定 鐵 心 3 A 凸 緣 部 4 A 底 側 磁 性 板 4B 頂 侧 磁 極 板 5 燃 料 排 出 通 路 6 A 第 一 密 封 環 6B 第 •-- 密 封 環 7 無 填 料 管 8 活 動 插 棒 式 鐵 心 8 A 導 向 筒 部 3 12/發明說明書(補件)/93-06/93107061 置的第四實施例的主要部 置的第五實施例的主要部 置的第六實施例的主要部 置的第七實施例的主要部 463 12 / invention specification (supplement) / 93-06 / 93107061 1257452 8 7 A, and a flow path 8 7 B is opened in the cylindrical portion 8 7 A from the top end toward the bottom end. Further, an internal thread 870 is formed on the outer circumference of the tubular portion 87A extending downward, and the outer peripheral portion of the filter case 87 is swaged toward the inside of the flange portion of the outer periphery of the filter case 86, whereby The filter housing 87 and the filter housing 86 are formed in a sealed manner. 88 denotes a cylindrical filter body, and the flat top plate 88A and the bottom plate 8 8 B are connected by a ring-shaped filter paper 8 8 C, and are inserted in the filter body 8 8 (in the filter paper 8 8 C). A cylindrical portion 8 7 A extends above the filter housing 87. Further, the filter body 88 is fixed by the top plate 8 8 A being pressed against the filter case 87 by a spring 8 9 which is compressed between the bottom of the filter case 86 and the bottom of the filter case 86. Further, the tip end of the inflow joint 15 projecting above the fuel pump P has a flange portion 15A, and the fuel inflow passage 16 provided in the inflow joint 15 is opened to the flange portion 1 by the internal thread 15B. 5 A's top surface. Further, the low-pressure side fuel filter is screwed to the fuel by the internal thread 87C of the cylindrical portion 87A and the internal thread 15B of the inflow joint 15 to screw the low-pressure side fuel filter 85 to the fuel. The pump P flows into the flange portion 15A of the joint 15. Further, the fuel inflow passage 860A of the low pressure side fuel damper 85 is connected to the fuel tank T by the fuel inflow pipe 80. Then, when the fuel pump P is driven, the fuel in the fuel tank T flows into the filter housing 8 through the fuel inflow pipe 80 and the fuel inflow passage 86A, and the dam of the body 8 8 Paper 8 8 C, which can remove foreign matter in the fuel, and then supply clean fuel to the fuel through the flow path 8 7 B opening in the filter body 8 312 / invention manual (supplement) /93-06/93107061 1257452 The fuel of the chestnut P flows into the passage 16 . According to the above embodiment, the low pressure side fuel filter 85 is integrally provided on the fuel pump P, and the fuel inflow pipe 80 can connect the fuel inflow passage 8 6 A of the low pressure side fuel damper 8 5 and the fuel tank T, To simplify the fuel inflow pipe 80 and simplify the connection of the fuel pipe. Further, by removing the main body B from the intake pipe 70, the low-pressure side fuel filter 85 can be removed from the intake pipe 70, which can improve the maintenance work of the above-mentioned filter. Further, since the low pressure side fuel filter 85 is directly disposed on the fuel pump P, the effect of cooling the fuel pump P can be achieved by the fuel in the low pressure side fuel filter 85. Another embodiment of the present invention will be described below using FIG. In addition, the same components as those in FIG. 1 are denoted by the same reference numerals, and the description thereof will be omitted. In the main body B, the fuel flow path 9 is vertically penetrated from the top end 9 Ο A toward the bottom end 9 Ο B. The lower side of the fixed iron core 3 of the fuel pump P is inserted into the fuel flow path 9 opened at the top end 9 Ο A . In the first embodiment, the fuel pump P is fixedly mounted on the top end 9 Ο A. Further, the inflow pipe 3 2 C of the fuel injection valve J is inserted into the fuel flow path 9 1 opening to the bottom end 9 Ο B, and the fuel injection valve J is fixedly disposed at the bottom end 90B of the main body B. on. The foreign matter in the fuel discharged from the fuel discharge passage 5 of the fuel pump P is removed in the high pressure side fuel filter 84, and then the fuel is supplied into the fuel inflow passage 3 2 D of the fuel injection valve J through the fuel flow path 91. 9 2 A denotes a fuel chamber recess forming a fuel chamber 92 of the pressure regulator R, the recess of which is provided at the right end 90C of the body B. Further, the feeding of the fuel chamber 92 of the pressure regulator R for the fuel toward 35 312 / invention specification (supplement) / 93-06 / 93107061 1257452 is by the right level branched from the fuel flow path 9 1 in the up and down direction The fuel inflow passage 9 2 B in the direction communicates with the inside of the fuel chamber 92 to be achieved. Further, the right opening of the recess of the fuel chamber is closed by the diaphragm 55 and the spring chamber main body 54, and the fuel chamber 92 is formed by the left side surface of the diaphragm 55 and the fuel chamber recess 92A, and the right side of the diaphragm 55. A spring chamber 57 is formed with the spring chamber body 54. Further, the return fuel passage 51 is provided in the main body B, and one end thereof is opened in the fuel chamber 92, and the other end is opened toward the atmosphere side. Further, a fuel chamber recess 9 3 A is formed in the recess at the left end 90D of the main body B, the fuel chamber recess 9 3 A forming the fuel chamber 9 3 of the pulsation damper D, and the left end 90 D of the fuel chamber recess 9 3 A The opening portion is closed by the diaphragm 94 and the spring chamber main body 95A, the right side surface of the diaphragm 94 forms a fuel chamber 913 with the fuel chamber recess 93A, and the left side surface of the diaphragm 94 forms a spring chamber 9 with the spring chamber main body 95A. 5. In the spring chamber 9.5, a damper spring 9 6 is provided in a compression, and according to this configuration, the diaphragm 94 is biased toward the fuel chamber 913 side by the elastic force of the damper spring 96. Further, the fuel chamber 93 of the pulsation damper D is connected to the fuel flow path 9 1 in the vertical direction by the fuel inflow passage 9 3 B in the left horizontal direction. The main body B having the fuel pump P, the fuel injection valve J, the pressure regulator R, and the pulsation damper D is fixed in such a manner that the mounting arm portion 6 Ο B of the main body B is disposed in the main body support portion of the intake pipe 70. 7 3 on the top surface 7 3 A, and insert the start bolt 7 4 into the mounting hole 64, and then use the nut 7 9 36 3丨2 / invention manual (supplement) / 93-06/93 107061 1257452 The bolt is screwed to the intake pipe 70. According to the above description, the front end portion of the yoke 37 having the valve body 38 of the fuel injection valve J is inserted into the injection valve support hole 7 2 of the intake pipe 70, and is passed through the intake pipe 70 and the main body B. Fuel injection valve J is supported. On the other hand, the fuel inflow passage 16 of the fuel pump P is connected to the fuel tank T by the fuel inflow pipe 80, and the return fuel passage 51 of the pressure regulator R is connected to the fuel tank by the return fuel pipe 83. T connection. According to the fuel supply device described above, during the operation including the engine start, the fuel in the fuel tank T is sucked into the fuel pump P through the fuel inflow pipe 80 and the fuel inflow passage 16 in the pump chamber 1 of the fuel pump P. The fuel whose pressure rises in 8 is discharged from the fuel discharge passage 5 toward the fuel passage 91 of the main body B. Further, in the high-pressure side fuel damper 8.4, the foreign matter contained in the fuel whose pressure is increased is removed, and a part of the clean fuel passes through the fuel flow path 9 1 in the vertical direction and the fuel inflow path 9 2 B in the right horizontal direction. It is supplied to the fuel chamber 92 of the pressure regulator R and is filled in the fuel chamber 92. In addition, another portion of the clean fuel is supplied to the fuel chamber 9 3 of the pulsation damper D through the fuel flow path 9 1 in the up and down direction and the fuel inflow passage 9 3 B in the left horizontal direction and fills the fuel chamber 93. According to the above description, as in the foregoing embodiment, the fuel adjusted by the predetermined fuel pressure is supplied to the fuel inflow passage 3 2 D of the fuel injection valve J by the pressure adjustment action of the pressure regulator R, and the fuel chamber 9 2 The remaining fuel therein is returned to the fuel passage 51 and the return fuel pipe 83 to flow back into the fuel tank T. 37 3 12/Invention Manual (Supplement)/93-06/93107061 1257452 Next, 'through the fuel flow path 9 1 from the bottom end 9 Ο B of the main body B toward the upward direction and the fuel inflow passage 9 3 toward the pulsation damper D The B series extends along the same straight line, and the tip end of the inflow pipe 3 2 C of the fuel injection valve J is inserted into the fuel flow path 9 1 opened at the bottom end 9 Ο B. According to the above description, the longitudinal axis Y-Y of the fuel inflow passage 3 2 D of the fuel injection valve J and the longitudinal axis S-S of the fuel inflow passage 9 3 B of the pulsation damper D pass through the fuel flow path 9 1 And they are set on the same line. According to the above description, the fuel whose pressure is increased from the fuel discharge passage 5 of the fuel pump P is easily applied to the fuel chamber 9 2 of the pressure regulator R through the fuel inflow passage 9 2 B provided on the same straight line, which is particularly improved. The pressure of the fuel pressure after the engine is started to adjust the reactivity. On the other hand, the fuel pressure pulsation generated when the fuel injection valve J is activated can be quickly sent to the fuel chamber 9 3 of the pulsation damper D through the fuel inflow passage 9 3 B, whereby the damping effect of the fuel pressure pulsation can be further improved. . Further, Fig. 9 shows still another embodiment of the fuel supply device of the present invention. In the present embodiment, the fuel supply device shown in Fig. 7 in which the fuel pump P, the fuel injection valve J, the pulsation damper and the pressure regulator R are disposed on the main body B is equipped with the low pressure side fuel filter shown in Fig. 6. 8 5 . For the same structure as the above composition, the same symbol is used. According to the present embodiment, since the low pressure side fuel filter 85 is integrally provided to the fuel pump P, the fuel inflow pipe 80 can connect the fuel inflow passage 8 6 A of the low pressure side fuel filter 85 to the fuel tank T, and thus The connection work of the fuel inflow pipe 80 can be simplified. Further, by removing the main body B from the intake pipe 70, the low-pressure side fuel 40 3 12 / invention manual (supplement) / 93-06/93 107061 1257452 filter 85 can be removed, and the maintenance work can be improved. Further, since the low pressure side fuel filter 85 is directly disposed on the fuel pump P, the fuel can be effectively utilized to cool the fuel pump. Further, in the embodiment shown in Figs. 7 and 9, the main body B is formed of a synthetic resin material, and the coupler 2 1 of the fuel pump P and the coupler 4 1 of the fuel injection valve J are disposed in the same outer peripheral direction. The same effect as the foregoing embodiment of FIGS. 1 and 4 can be achieved. Further, in the present embodiment, the main body B is attached to the intake pipe, but the main body B may be attached to the throttle body, and the mechanism for the main body B to be mounted on the intake pipe or the like is not limited to the In other embodiments, the fuel pump includes a pump provided with an electromagnetic coil to cause the pump portion to perform a pumping action using the electromagnetic coil. According to the first aspect of the present invention, in the fuel injection device, the fuel pump is used to raise the pressure of the fuel in the fuel tank, and the fuel whose pressure rises is injected to the engine through the fuel injection valve. a fuel pump, a fuel injection valve, and a pressure regulator are integrally mounted on the main body, and a fuel discharge passage of the fuel pump, a fuel inflow passage of the fuel injection valve, and a pressure regulator are disposed through a fuel flow path provided in the main body a fuel inflow passage is connected; a main body having the fuel pump, the fuel injection valve, and the pressure regulator is mounted on the intake pipe, and an injection hole of the fuel injection valve supported by the main body and the intake pipe faces the opening of the intake pipe, thereby borrowing The main body is mounted on the intake pipe, and the fuel pump, the fuel injection valve and the pressure regulator are once mounted on the vehicle, which can improve the assembly of the vehicle, in particular, the installation space is limited to 41 3 12 / invention manual (complement ()) /93-06/93107061 1257452 is effective in the case of system. Further, the fuel pipe can be realized by connecting the fuel pump and the fuel tank through the fuel inflow pipe and returning to the fuel passage and the fuel tank by returning the fuel pipe, so that the degree of freedom in designing the fuel pipe can be improved and the connection work can be facilitated. Further, the fuel injection valve uses an electromagnetic fuel injection valve to maintain the fuel controllability of the existing fuel nozzle injection valve as it is. Further, since the high-pressure fuel pipe is formed only inside the main body, the withstand voltage reliability can be further improved, and this is particularly preferable in the case where the fuel supply system is externally exposed to a locomotive or the like. Furthermore, since the electromagnetic coil of the fuel pump itself generates heat when the engine is running, the heat conduction to the fuel injection valve can be prevented by the main body, so that the generation of steam in the fuel injection valve can be suppressed, so that the fuel can be continuously and stably supplied. Fuel injected through a fuel injection valve. In addition, since the fuel pump is disposed at a distance from the intake pipe in a thickness corresponding to the main body, the temperature rise of the fuel pump caused by the heat of the intake pipe can be suppressed, the discharge performance of the fuel pump is stabilized, and the composition is lowered. Insulation of the electromagnetic coil of the fuel pump. Further, since the fuel pump, the pressure regulator, and the fuel injection valve are all supported on the main body, even when an external force acts on the respective components, the components are not damaged indirectly. Also, since the fuel pump, the pressure regulator, and the fuel injection valve are mounted on a common mounting member, the fixed support mechanism can be simplified. Furthermore, according to the second aspect of the present invention, the longitudinal axis of the fuel discharge passage of the fuel pump, the longitudinal axis of the fuel inflow passage of the fuel injection valve, and the 42 312/invention specification (supplement)/93-06 /93107061 1257452 Reactivity and further increase the damping effect of the pressure regulator. According to the ninth feature of the present invention, since the main body is formed using a synthetic resin material, the heat insulating effect of the main body can be further improved, and the generation of steam of the fuel pump and the fuel injection valve can be further effectively suppressed. According to the tenth feature of the present invention, the coupler connected to the electromagnetic coil in the fuel pump and the coupler connected to the electromagnetic coil provided inside the fuel injection valve are disposed in the same outer circumferential direction, so that the coupling can be improved. Connectivity of female connectors for external power connections. Further, according to the eleventh feature of the present invention, since the low pressure side fuel filter is integrally mounted in the fuel inflow passage of the fuel pump, the fuel inflow pipe can connect the fuel inflow passage of the low pressure side fuel filter to the fuel tank To further simplify the fuel piping, and to install all the components on the intake pipe at a time by attaching the main body to the intake pipe. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal cross-sectional view showing an embodiment of a fuel supply device of the present invention. Fig. 2 is an overall system diagram of a fuel injection device in which a fuel supply device of the present invention is mounted on an intake pipe. Fig. 3 is a longitudinal cross-sectional view showing a relationship between a fixed iron core of Fig. 1, a fuel inflow passage of a fuel injection valve, and a fuel flow path of a main body. Fig. 4 is a longitudinal cross-sectional view showing the main part of a second embodiment of the fuel supply device of the present invention. Fig. 5 is a longitudinal cross-sectional view showing the main part of a third embodiment of the fuel supply device of the present invention. 45 312/Inventive specification (supplement)/93-06/93107061 1257452 Fig. 6 is a longitudinal sectional view showing a fuel supply device of the present invention, Fig. 7 is a longitudinal sectional view showing a fuel supply device of the present invention, and Fig. 8 is a view showing a fuel supply of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 9 is a longitudinal sectional view showing a fuel supply device of the present invention (a symbol of a component symbol) 1 a bobbin 1 A a cylindrical portion 1 B a lower flange portion 1C an upper flange portion 2 an electromagnetic coil 3 a fixed iron core 3 A Flange portion 4 A Bottom side magnetic plate 4B Top side Pole plate 5 Fuel discharge passage 6 A First seal ring 6B No. - Seal ring 7 No filler tube 8 Active plunger 8 A Guide tube 3 12 / Invention The specification (supplement)/93-06/93107061 of the fifth embodiment of the main portion of the fourth embodiment The main portion of the seventh embodiment of the main portion opposite to a sixth embodiment of the portion 46 facing the