200304985 玖、發明說明 【發明所屬之技術領域】 本發明爲關於二輪機車的車輛之燃料幫浦模組，特別是 關於在外側開口有自燃料箱接收燃料之燃料注入口，供給 燃料至引擎的燃料噴射閥之燃料出口，及，使剩餘燃料回 流至燃料箱之燃料回流口的模組箱，其收容有，在燃料注 入口及燃料出口間接續之流路上所直列介裝的電動燃料幫 浦及燃料過濾器；和在燃料出口及燃料回流口間接續之調 壓通路所介裝的燃料壓力調節器，如此之改良者。 【先前技術】 此種燃料幫浦模組，例如，在日本專利特開2 0 0 1 - 2 4 8 5 1 0 號公報所揭示者已爲人所知。 【發明內容】 (發明所欲解決之課題） 習知之此種燃料幫浦模組，由於使電動燃料幫浦及燃料 過濾器直列配置於同一軸線上，因此，其全長變成很長， 而要搭載於引擎上時，則難以設計成小型化。又，將此一 燃料幫浦模組接近引擎而配置時，則會受到引擎之輻射熱 的影響而在內部發生蒸汽，並會導致引擎之熱間起動或高 速運轉而發生故障之虞。 本發明爲鑑於該種情況而所完成，其目的爲提供可大幅 度縮短其全長度，而且可將在內部所發生之蒸汽排除至外 部的車輛之燃料幫浦模組。 (解決課題之手段） 6 312/發明說明書(補件)/92-04/92103502 200304985 爲了達成上述目的，本發明爲在外側開p 收燃料之燃料注入口，供給燃料至引擎的燃 料出口，及，使剩餘燃料回流至燃料箱的燃 組箱，其收容有：在燃料注入口及燃料出口間 所直列介裝的電動燃料幫浦及燃料過濾器， 及燃料回流口間接續之調壓通路，如此所介 調節器中，使前述電動燃料幫浦及前述燃料 長度方向軸線配置成互相平行狀，可收容包 燃料幫浦及燃料過濾器所發生之蒸汽的燃料 所分離之蒸汽送至前述燃料回流口的蒸汽分 該電動燃料幫浦及燃料過濾器的長度方向 內，如此爲其第1特徵。 根據該第1特徵，藉使電動燃料幫浦及燃 配置，其可大幅度縮短模組箱之全長度，而 浦之小型化。 又，在燃料過濾器及電動燃料幫浦內所發 料會共同被收容於蒸汽分離室內，在該分離 汽分離，由於其蒸汽會上浮而被送至燃料回 在燃料噴射閥可供給未含有蒸汽之良好狀態 時常確保引擎之安定的運轉狀態。 又，本發明除了第1特徵外，使前述蒸汽 蒸汽排出孔開口在比前述燃料壓力調節器更 壓通路上，其藉使剩餘燃料通過該調壓通路 (eject)效果可賦予前述蒸汽排出孔具有負壓 312/發明說明書(補件)/92-04/92103502 有自燃料箱接 料噴射閥之燃 料回流口之模 接續之流路上 和在燃料出口 裝的燃料壓力 過濾器之該些 含在此等電動 ，使自該燃料 離室設在鄰接 一端之模組箱 料過濾器平行 可謀求燃料幫 生之蒸汽和燃 室使燃料和蒸 流口，因此， 的燃料，其可 分離室上部的 下流之前述調 而所生的排出 7 200304985 才艮據該第2特徵，藉前述排出效果可賦予蒸汽排出孔負 壓時’則可有效促進自蒸汽分離室對調壓通路排出蒸汽， 隨者也可促進在蒸汽分離室之蒸汽分離作用。 進一步’本發明除了第1或第2特徵外，使前述燃料過 濾、器介裝在前述燃料注入口及前述電動燃料幫浦間之流路 上。 根據該第3特徵，電動燃料幫浦可內藏無刷型馬達，又， 燃料過濾器也可採用廉價之低壓型者。 再進一步’除了第1或第2特徵外，使前述模組箱內連 通前述燃料注入口裝滿燃料，使前述電動燃料幫浦浸漬在 該燃料中’在該電動燃料幫浦及前述燃料出口間之流路上 介裝前述燃料過濾器。 根據該第4特徵，以模組箱內的燃料可冷卻電動燃料幫 浦內藏之馬達。因此，即使其馬達爲通常的附有電刷者時， 亦可有效的藉由燃料冷卻該電刷之摺動部。又，在該時， 當電刷摺動部所發生的摩耗粉（abrasion powder)混入至模 組箱內的燃料中，而被吸入至電動燃料幫浦時，其摩耗粉 可藉由燃料過濾器捕捉，而可阻止其對燃料噴射閥側之流 出。 又，進一步，本發明除了第1〜第4特徵之任一特徵以 外，使前述模組箱鄰接在引擎的進氣管之一側，而使此些 模組箱及進氣管之長度方向軸線形成互相大致呈直角之配 置。 又，前述吸氣管爲對應於後述之本發明實施中的節流體 312/發明說明書(補件)/92-04/92103502 ! 200304985 根據該第5特徵，可縮短燃料幫浦模組的全長度，並使 引擎之進氣系小型化。 【實施方式】 &下依照附圖所示之本發明的實施例說明本發明之實施 例。 圖1爲在本發明之第1實施例中具有燃料幫浦模組的二 輪機車之重要部份側視圖，圖2爲圖1的2部之擴大縱剖 側視圖，圖3爲圖2的3-3線剖面圖，圖4爲圖3之4-4 線剖面圖，圖5爲包含有上述燃料幫浦模組之二輪機車的 燃料供給系之全體槪要圖，圖6爲橫轉遮斷閥之作用說明 圖’圖7爲本發明的第2實施例中具有燃料模組之二輪機 車的燃料供給系之全體槪要圖。 開始說明圖1〜圖7所示之本發明之第1實施例。 圖1中，二輪機車Μ之車架1爲由，未圖示之自頭管往 後方向下延伸的前管1 f，及，自其後端起立往後方延伸之 後管1 r，如此所構成，在其前管1 f被架裝有配置在其下 方之4循環引擎E，又，在後管lx*上設置有燃料箱T。 上述引擎E配置有使汽缸頭2朝向車輛前方大致呈水平 的汽缸塊3,在該汽缸頭2的上端面接合具有連接進氣口 4 之進氣道5的節流體6，在該節流體6的上流端接續有空 氣濾淸器7。又，在汽缸頭2的下端面，接合有連接排氣 口 8之排氣管9。 在節流體6軸支有可開閉進氣道5之節流閥1 〇，在比該 9 312/發明說明書(補件)/92-〇4/92103502 200304985 節流閥1 〇更下流側在被形成於節流體6的側壁之噴射閥之 安裝輪轂11上，安裝有朝向進氣口 4噴射燃料之電磁式燃 料噴射閥I。又’在該燃料噴射閥Ϊ被安裝可供給燃料箱丁 之燃料的燃料幫浦模組Μρ在節流體6上。 首先，藉圖6之全體槪要圖說明該燃料幫浦模組Μρ的 全體構成。 燃料幫浦模組Μρ爲以：模組箱12,及被收容在該模組箱 12內之電動燃料幫浦13，低壓型燃料過濾器14，燃料壓 力調節器1 5及橫轉遮斷閥1 6爲主要構成要素。 模組相1 2爲在其外側面開口有燃料注入口 2 〇，燃料出 口 2 1及燃料回流口 2 2，在該燃料注入口 2 〇，被接續有自 燃料箱Τ底部延伸出之燃料供給管23，燃料箱τ內的燃料 以重力作用會流入燃料注入口 20。 又，在燃料回流口 2 2，被接續有使終端開口在燃料箱τ 內的氣相部之燃料回流管2 4，燃料出口 2 1被接續至燃料 噴射閥I之導入口。 在模組箱1 2內被形成有主室2 5，及，在該主室2 5夾住 隔壁27所鄰接之蒸汽分離室26，在該主室25收容有電動 燃料幫浦1 3及燃料過濾器1 4。此時，燃料過濾器1 4使其 長度方向一端之入口管28接續至前述燃料注入口 20，長 度方向另一端之出口管29則在蒸汽分離室26上開口。又， 電動燃料幫浦1 3爲其長度方向一端之吸入管3 0及蒸汽排 出管31在蒸汽分離室26上開口，長度方向另一端之吐出 管3 2則連通至橫轉遮斷閥1 6之入口孔3 3。 10 312/發明說明書(補件)/92-04/92103502 200304985 橫轉遮斷閥1 6之出口孔34爲介由噴射燃料通路35連 通至前述燃料出口 2 1，在上述噴射燃料通路3 5之途中， 被設有可阻止自燃料出口 2 1往橫轉遮斷閥丨6側燃料逆流 之逆止閥3 6。 自比上述逆止閥36更下流之噴射燃料通路35起分歧有 可達到前述燃料回流口 22之調壓通路40，在該調壓通路 4 0介裝有燃料壓力調節器1 5。該燃料壓力調節器1 5爲具 備有：被形成在調壓通路4 0之途中朝往其下流側之閥座 42 ;及，可在該閥座42定位而所對置之閥體43 ;及，以 一定的負荷使該閥體43對閥座42側予以加能之調壓彈簧 44 ;在電動燃料幫浦i 3的吐出壓力變成規定値以上時，閥 體43則會自閥座42離開而對燃料回流口 22解放剩餘的壓 力。 在比該燃料壓力調節器1 5更下流的調壓通路4 〇之內側 面，開口有貫通前述蒸汽分離室26的頂壁之蒸汽排出孔 45，其藉剩餘燃料高速通過調壓通路4〇所生之排出效果可 賦予蒸汽排出孔45具有負壓。 再回到圖1 ’在空氣濾淸器7的前面配設有電子控制單 元47。該電子控制單元47爲依照被輸入之引擎回旋數 Ne、引擎溫度（例如：潤滑油溫）Te、節流閥1 0的開度 Th、曲柄位置Cp等之信號而控制燃料噴射閥I、電動燃料 幫浦1 3及點火線圈（未圖示）等的作動。 然後，在引擎E之運轉中，燃料箱τ內的燃料會使燃料 供給管23後退到達燃料幫浦模組Mp之燃料注入口 20， 11 312/發明說明書(補件)/92-04/92103502 200304985 再被燃料過濾器1 4過濾而暫時流入蒸汽分離室26。如此， 由於以重力對燃料注入口 2 0供給燃料，因此，假如在燃料 供給管2 3內發生蒸汽時，其蒸汽會自然往燃料箱下側上 浮。流入蒸汽分離室2 6之燃料會藉電動燃料幫浦1 3的作 動而自入口管2 8被吸入並對吐出管3 2壓送，再經過橫轉 遮斷閥1 6及逆止閥3 6自燃料出口供給至燃料噴射閥I， 再自該閥I往進氣口 4噴出。 在其間，在燃料過濾器1 4及電動燃料幫浦1 3內所發生 之蒸汽雖然會被排出至蒸汽分離室26，但由於在該室26 燃料和蒸汽被分離，因此，蒸汽會上浮而自蒸汽排出孔4 5 流出至比該燃料壓力調節器1 5更下流之調壓通路4 0。 但是，在調壓通路40，由於如前述般地使燃料壓力調節 器1 5開閥之剩餘燃料會高速通過，藉其排出效果可賦予蒸 汽排出孔4 5負壓，因此，其可有效果的促進自蒸汽分離室 26對調壓通路40排出蒸汽，隨著也可促進在蒸汽分離室 2 6之蒸汽分離作用。如此自燃料過濾器1 4及電動燃料幫 浦1 3被排除蒸汽時，在燃料噴射閥I可供給不含有蒸汽之 良好狀態的燃料，可時常確保引擎E之安定運轉狀態。 通過調壓通路40之燃料及蒸汽由於自燃料回流口 22經 過燃料回流管24而被放出至燃料箱τ內之氣相部，因此， 在該氣相部其可自燃料分離蒸汽。 其次’藉圖6說明前述橫轉遮斷閥16。 橫轉遮斷閥1 6爲如圖6 ( n )所示，其具備有：在二輪 機車Μ之正立狀態保持朝向左上方傾斜姿勢之圓筒狀的 12 312/發明說明書(補件)/92-04/92103502 200304985 第1閥室5 5 ;及，和其相反的保持朝向右上方傾斜姿勢之 圓筒狀的第2閥室5 6 ;第1閥室5 5的上端接續第2閥室 5 6之中間部。在第2及第2閥室5 5、5 6的各個上部各自 形成有第1及第2閥座55a、56a，在第1閥座55a的下部 開口有前述入口孔33，在第2閥座56a的上部開口有前述 出口孔3 4。第丨及第2閥室5 6的各下端藉由球狀之栓體 59、60而被閉塞。在第丨及第2閥室55、56，被收容有各 自可在第1及第2閥座55a、56a定位之球狀的閥體58、 59。第1及第2閥室55、56之各個下端爲藉由栓體59、 6 〇而被閉塞。 然後，在二輪機車Μ之正立狀態，如圖6 ( N )所示， 第1及第2閥體58、59以本身力量可自第1及第2閥座 55a、56a分離而停留在栓體59、60上。因此，入口孔33 及出口孔3 4間被導通而容許自電動燃料幫浦1 3對燃料噴 射閥I供給燃料。 但是，萬一如二輪機車Μ橫轉至左方或右方時，如圖6 (L)或（R)所示，隨著第1閥室55或第2閥室56大致 在水平橫轉之第一閥體5 7或第2閥體5 8會藉其慣性力而 於第1閥座55a或第2閥座56a上定位，其均會遮斷入口 孔3 3及出口孔3 4間。如此假如第1閥體5 7或第2閥體 5 8暫時定位於第1閥座5 5 a或第2閥座5 6a時，其定位狀 態可藉入口孔3 3側之燃料壓力而被保持。因此，藉由二輪 機車Μ的橫轉即使在燃料噴射閥I側有損傷時亦可防止自 燃料出口 2 1噴出燃料於未然。 13 312/發明說明書(補件)/92-04/92103502 200304985 圖2〜圖5爲表示如上述之燃料幫浦模具組Mp之具體 例。 在圖2及圖3中，模組箱1 2爲形成有：主室2 5之箱體 12a’及，在該箱本體12a接合夾住形成有蒸汽分離室26 之箱蓋1 2b之隔壁2 7，而橫剖面形成爲大致呈扇形之構 成。此時，在箱本體12a、隔壁27及箱蓋12b之各接合面 間介裝有密封構件4 8、4 8。又，圓筒形之電動燃料幫浦爲， 在主室2 5中’其被配置在扇形的中心部上。又，被形成爲 圓弧狀之燃料過濾器1 4爲，在主室2 5中，其被沿著該扇 形之圓弧部配置。如此電動燃料幫浦1 3及燃料過濾器1 4， 在主室25中，其被配置爲該等長度方向軸線可互相平行。 因此，其可大幅度縮短模組箱1 2之全長度，而使其橫剖面 形狀相結合爲大致呈扇形，而可謀求燃料幫浦模組Mp之 小型化。 如圖2及圖3所明示，在箱本體12a上，其圓弧狀部外 側’被形成有排列在長度方向之一對安裝輪轂4 9、4 9，此 等輪轂4 9、4 9藉由螺栓5 0、5 0被固著於節流體6之一側 壁上。此時，模組箱1 2被配置爲，其長度方向軸線X對 節流體ό的進氣道5之軸線γ形成爲直角。藉此種配置， 和使燃料幫浦模組Mp之全長度縮短化，則可使引擎進 氣系呈小型化。 又’在箱本體1 2 a之側壁上，其後側被設有燃料注入口 2〇 ’其前側被設有燃料出口 2 1。特別是燃料注入口 2〇被 設在一體形成於箱本體1 2 a的前壁上嵌合燃料噴射閥I頭 14 312/發明說明書(補件)/92-04/92103502 200304985 部之蓋子5 1，由於其直接連通至燃料噴射閥i的燃料 口，因此，在燃料出口 2 1及燃料噴射閥I間不須要蔽 而可使燃料配管簡單化。 進一步，在箱本體1 2a被組裝入有橫轉遮斷閥1 6。 一方面，在箱蓋1 2b被組裝入有燃料壓力調節器i : 其後壁被設有燃料回流口 2 2。 如上述，假如燃料注入口 2 0及燃料回流口 2 2被設 組箱〗2的後壁時，可使接續此等之燃料供給管23及 回流管24配管在二輪機車Μ之比較中心部，而可有 迴避和其他物品之相干涉。 其另外的構成則和圖5所示之全體槪要圖同樣，在 〜圖5中’對應於圖5之部分被附加相同之參照符號 其次說明圖7所示之本發明的第2實施例。 該第2實施例爲，在模組箱1 2之燃料注入口 2〇被 有過濾器61。在該燃料入口 20連通主室25，在主1 裝滿來自燃料箱Τ之燃料，在該燃料中浸漬電動燃料 1 1 3及燃料過濾器1 1 4。此些電動燃料幫浦1 1 3及燃料 器1 1 4，和前實施例同樣，使長度方向軸線互相平行 置於主室25上。電動燃料幫浦113使吸入管3〇在主 口，吸入主室2 5的燃料，介由吐出管3 2壓送至燃料 器Π 4。因此，在該第2實施例中燃料過濾器丨〗4必 高壓型。以該燃料過濾器1 1 4所過濾之高壓燃料可通 口管2 9被送至橫轉遮斷閥1 6，以後和前實施例同樣 經路而自燃料噴射閥I被噴射出至引擎E之進氣口 8 312/發明說明書(補件)/92-04/92103502 導入 管， ，在 在模 燃料 效於 圖2 裝著 I 25 幫浦 過濾 而配 室開 過濾 須是 過出 經過 15 200304985 電動燃料幫浦1 1 3內藏有通常附帶電刷之馬達。因此， 其電刷摺動部是當然之理，即使馬達全體亦均以主室25 的燃料來冷卻。此時，在電刷摺動部所發生之摩耗粉雖然 會流至主室2 5，而和燃料共同被吸入電動燃料幫浦} i 3 中’但其摩耗粉會被配置在電動燃料幫浦11 3之吐出側的 燃料過濾器1 1 4所捕捉，而不會流入至燃料噴射閥〗側。 主室25之上部爲介由帶孔62連通旁邊的蒸汽分離室 26’在主室25內所發生之蒸汽會上浮而移動至蒸汽分離室 2 6。又，電動燃料幫浦1 1 3的蒸汽排出管3 1爲和前實施例 同樣開口在蒸汽分離室26上。 其他之構成則和前實施例同樣，在圖7中，對應於前實 施例之部份則被附加相同的參照符號，因此省略其說明。 本發明並不限定於上述實施例，只要不脫離其要旨範 圍’本發明可作各種各種設計變更。例如，引擎E爲多氣 筒時，則可介由進氣歧管使節流體6結合於汽缸頭2，也 可在其進氣歧管安裝對應於各氣筒之燃料噴射閥，又，此 時，也可在進氣歧管上安裝燃料幫浦模組Mp。 (發明之效果） 如上根據本發明之第1特徵，在外側開口有自燃料箱接 收燃料之燃料注入口，可供給燃料至引擎的燃料噴射閥之 燃料出□，及，回流剩餘燃料至燃料箱的燃料回流口，如 此之模組箱，收容有：在燃料注入口及燃料出口間接續之流 路直列所介裝的電動燃料幫浦及燃料過濾器；和在燃料出 口及燃料回流口間接續之調壓通路所介裝的燃料壓力調節 16 312/發明說明書(補件)/92-04/92103502 200304985 器’如此之車輛的燃料幫浦模組中，由於使前述電動燃料 幫浦及前述燃料過濾器之該些長度方向軸線配置爲互相平 行’收容包含在該些電動燃料幫浦及燃料過濾器所發生之 蒸汽的燃料，使自該燃料所分離之蒸汽被送至前述燃料回 流口的蒸汽分離室設在鄰接於該電動燃料幫浦及燃料過濾 器的長度方向一端之前述模組箱內，因此，其可大幅度縮 短模組箱的全長度，並謀求燃料幫浦模組之小型化。又， 由於在燃料過濾器及電動燃料幫浦內所發生之蒸汽會在蒸 汽分離室和燃料分離而被送至燃料回流口，因此，在燃料 噴射閥可供給不含有蒸汽之良好狀態的燃料，而可時常確 保引擎的安定運轉狀態。 又’根據本發明之第2特徵，除了第1特徵外，由於使 前述蒸汽分離室上部的蒸汽排出孔開口在比前述燃料壓力 調節器更下流之前述調壓通路上，藉剩餘燃料通過該調壓 通路所生之排出效果可賦予前述蒸汽排出孔負壓，因此， 不僅可有效的促進自蒸汽分離室對調壓通路的蒸汽排出， 也可在蒸汽分離室促進蒸汽分離作用。 進一步，根據本發明之第3特徵，除了第1或第2特徵 外’由於使前述燃料過濾器介裝在前述燃料注入口及前述 電動燃料幫浦間之流路上，因此，電動燃料幫浦可使無刷 型馬達內藏，又，燃料過濾器可採用廉價之低壓型。 再進一步，根據本發明之第4特徵，除了第1或第2特 徵外，前述模組箱內被連通前述燃料注入口而裝滿燃料， 在該燃料中浸漬前述電動燃料幫浦，由於在該電動燃料幫 17 312/發明說明書(補件)/92-04/92103502 200304985 浦及則述燃料出口間之流路介裝前述燃料過濾器，因此， 電動燃料幫浦之內藏馬達即使是通常的附有電刷者時，亦 可有效地藉燃料冷卻其電刷摺動部，而且可藉由燃料過濾 器捕捉在電刷摺動部所發生之摩耗粉，而可阻止往燃料噴 射閥流出。 再進一步根據本發明之第5特徵，除了第1〜第4特徵 中之任一特徵外’由於使前述模組箱鄰接於引擎的進氣管 之一側’使此些模組箱及進氣管的長度方向軸線配置形成 大致呈直角狀，因此，使燃料幫浦模組的全長度和縮短化 相結合’其可使引擎之進氣系小型化。 【圖式簡單說明】 圖1爲在本發明之第1實施例中裝備有燃料幫浦模組之 二輪機車的重要部份側視圖。 圖2爲圖1之2部份的擴大縱剖側視圖。 圖3爲圖2之3-3線剖面圖。 圖4爲圖2之4-4線剖面圖。 圖5爲包含有上述燃料幫浦模組之二輪機車的燃料供給 系之全體槪要圖。 圖6爲橫轉遮斷閥之構成及作用說明圖。 圖7爲在本發明之第2實施例中裝備有燃料幫浦模組之 二輪機車的燃料供給系之全體槪要圖。 (元件符號說明） 1 車架 if 前管 18 312/發明說明書(補件)/92-04/92103502 200304985 lr 後管 2 汽缸頭 3 汽缸塊 4 進氣口 5 進氣道 6 進氣管（節流體） 7 空氣濾淸器 8 排氣口 9 排氣管 10 節流閥 11 輪轂 12 模組箱 12a 相本體 12b 箱蓋 13 電動燃料幫浦（內藏無刷馬達） 14 燃料過濾器（低壓型） 15 燃料壓力調節器 16 橫轉遮斷閥 2 0 燃料注入口 2 1 燃料出口 22 燃料回流口 23 燃料供給管 24 燃料回流管 25 主室 19200304985 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a fuel pump module for a two-wheeled locomotive vehicle, and more particularly, to a fuel injection port for receiving fuel from a fuel tank which is opened on the outside, and supplies fuel to the engine fuel. The fuel outlet of the injection valve and the module box for returning the remaining fuel to the fuel return port of the fuel tank contain an electric fuel pump and an electric fuel pump which are installed in a straight line on the fuel injection port and the fuel outlet. Fuel filters; and fuel pressure regulators indirectly connected to fuel outlets and fuel return ports for pressure regulating passages, such improved ones. [Prior Art] Such a fuel pump module is known, for example, as disclosed in Japanese Patent Laid-Open Nos. 2000- 2 4 8 5 10. [Summary of the Invention] (Problems to be Solved by the Invention) The conventional fuel pump module has an electric fuel pump and a fuel filter arranged in line on the same axis. Therefore, the total length of the fuel pump module is very long, and it needs to be mounted. When mounted on an engine, it is difficult to design miniaturization. In addition, when this fuel pump module is arranged close to the engine, it will be affected by the radiant heat of the engine, and steam will be generated inside, which may cause the engine to start in a hot room or run at high speed to cause a failure. The present invention has been made in view of such a situation, and an object thereof is to provide a fuel pump module that can greatly reduce the full length of the vehicle, and can remove the steam generated inside the vehicle to the outside. (Means for Solving the Problem) 6 312 / Invention Specification (Supplement) / 92-04 / 92103502 200304985 In order to achieve the above object, the present invention opens a fuel injection port for collecting fuel on the outside, and supplies fuel to a fuel outlet of an engine, and The combustor that returns the remaining fuel to the fuel tank contains: an electric fuel pump and a fuel filter installed in-line between the fuel injection port and the fuel outlet, and a pressure regulating path indirectly continued from the fuel return port. In such a regulator, the electric fuel pump and the fuel longitudinal axis are arranged parallel to each other, and the steam separated from the fuel containing the steam generated by the fuel pump and the fuel filter can be sent to the fuel return. The steam of the port is divided into the longitudinal direction of the electric fuel pump and the fuel filter, and is thus the first feature. According to this first feature, the entire length of the module box can be greatly shortened by the electric fuel pumping and combustion arrangement, and the size of the pump can be reduced. In addition, the fuel filters and electric fuel pumps will be stored together in the steam separation chamber. In this separated steam, the steam will float up and be sent to the fuel. The fuel injection valve can supply non-steam. The good condition often ensures the stable running state of the engine. Furthermore, in addition to the first feature of the present invention, the steam-steam discharge hole is opened in a path that is more pressurized than the fuel pressure regulator, and the surplus steam can be provided to the steam-exhaust hole by passing the remaining fuel through the ejector effect. Negative pressure 312 / Invention specification (Supplement) / 92-04 / 92103502 These are the fuel pressure filters installed at the fuel outlet of the fuel return port of the fuel tank injection valve and the fuel pressure filter installed at the fuel outlet. Waiting for electricity, the module box filter located at one end adjacent to the fuel separation chamber can be paralleled, and the fuel-assisted steam and the combustion chamber can be used to make the fuel and the steam flow port. According to the second feature, when the negative pressure is given to the steam discharge hole by the aforementioned discharge effect, it can effectively promote the steam discharge from the steam separation chamber to the pressure regulating passage, and the follower can also Promote steam separation in the steam separation chamber. Further, in addition to the first or second feature of the present invention, the fuel filter and the device are interposed on a flow path between the fuel injection port and the electric fuel pump. According to this third feature, a brushless motor can be incorporated in the electric fuel pump, and an inexpensive low-pressure type fuel filter can be used. Further, in addition to the first or second feature, the fuel tank is connected to the fuel injection port and filled with fuel, and the electric fuel pump is immersed in the fuel. Between the electric fuel pump and the fuel outlet The aforementioned fuel filter is installed on the flow path. According to this fourth feature, the motor in the electric fuel pump can be cooled by the fuel in the module case. Therefore, even when the motor is an ordinary brush-attached person, the folding portion of the brush can be effectively cooled by the fuel. At this time, when the abrasion powder generated by the brush folding part is mixed with the fuel in the module case and sucked into the electric fuel pump, the abrasion powder can be passed through the fuel filter. Trapped while preventing its outflow to the fuel injection valve side. Furthermore, in addition to any one of the first to fourth features of the present invention, the module box is adjacent to one side of an intake pipe of an engine, and the longitudinal axis of the module box and the intake pipe is made. Arranged at approximately right angles to each other. In addition, the aforementioned suction pipe corresponds to the throttle body 312 / Invention Specification (Supplement) / 92-04 / 92103502! 200304985 in the implementation of the present invention described later. According to this fifth feature, the entire length of the fuel pump module can be shortened. And make the engine's intake system miniaturized. [Embodiment] An embodiment of the present invention will be described below with reference to the embodiment of the present invention shown in the drawings. FIG. 1 is a side view of an important part of a two-wheeled locomotive having a fuel pump module in a first embodiment of the present invention, FIG. 2 is an enlarged longitudinal sectional side view of the two parts of FIG. 1, and FIG. A sectional view taken along line -3, FIG. 4 is a sectional view taken along line 4-4 of FIG. 3, and FIG. 5 is an overall view of the fuel supply system of the two-wheeled locomotive including the fuel pump module, and FIG. Description of valve operation FIG. 7 is an overall view of the fuel supply system of a two-wheeled locomotive having a fuel module in a second embodiment of the present invention. The first embodiment of the present invention shown in Figs. 1 to 7 will be described. In FIG. 1, the frame 1 of the two-wheeled locomotive M is composed of a front tube 1 f extending downward from the head tube to the rear, and a tube 1 r extending from the rear end of the rear tube to the rear. The front tube 1 f is framed with a 4-cycle engine E disposed below it, and a fuel tank T is provided on the rear tube lx *. The engine E is provided with a cylinder block 3 having a cylinder head 2 facing substantially horizontally toward the front of the vehicle. A throttle body 6 having an air inlet 5 connected to the air inlet 4 is joined to an upper end surface of the cylinder head 2. The upper end is connected with an air filter 7. An exhaust pipe 9 connected to the exhaust port 8 is connected to the lower end surface of the cylinder head 2. The throttle valve 6 is supported by a throttle valve 1 〇 that can open and close the air inlet 5. The throttle valve 1 〇 is more downstream than the 9 312 / Invention Specification (Supplement) / 92-〇4 / 92103502 200304985 throttle valve 1 〇 An electromagnetic fuel injection valve I for injecting fuel toward the intake port 4 is mounted on a mounting hub 11 of an injection valve formed on a side wall of the throttle body 6. Further, a fuel pump module Mρ capable of supplying fuel to the fuel tank is installed in the fuel injection valve 在 on the throttle body 6. First, the overall structure of the fuel pump module Mρ will be described with reference to the whole of FIG. 6. The fuel pump module Mρ is: a module box 12, and an electric fuel pump 13, a low-pressure fuel filter 14, a fuel pressure regulator 15 and a horizontal shut-off valve housed in the module box 12. 16 is the main component. The module phase 12 is a fuel injection port 20, a fuel outlet 21, and a fuel return port 22, which are opened on the outer side surface. At the fuel injection port 20, a fuel supply extending from the bottom of the fuel tank T is connected. Tube 23, the fuel in the fuel tank τ flows into the fuel injection port 20 due to gravity. The fuel return port 22 is connected to a fuel return pipe 24 of a gas phase portion having an end opening in the fuel tank τ, and the fuel outlet 21 is connected to an introduction port of the fuel injection valve I. A main chamber 25 is formed in the module box 12, and a steam separation chamber 26 adjacent to the partition wall 27 is sandwiched between the main chamber 25, and an electric fuel pump 13 and fuel are housed in the main chamber 25. Filter 1 4. At this time, the fuel filter 14 has an inlet pipe 28 at one end in the longitudinal direction connected to the aforementioned fuel injection port 20, and an outlet pipe 29 at the other end in the longitudinal direction is opened in the steam separation chamber 26. In addition, the electric fuel pump 13 is an inlet pipe 30 and a steam exhaust pipe 31 at one end in the longitudinal direction, which are opened in the steam separation chamber 26, and an outlet pipe 3 2 at the other end in the longitudinal direction is communicated to the horizontal shutoff valve 1 6 Of the entrance hole 3 3. 10 312 / Invention Specification (Supplement) / 92-04 / 92103502 200304985 The outlet hole 34 of the lateral shut-off valve 16 is connected to the fuel outlet 21 through the injection fuel passage 35, and the injection fuel passage 3 to 5 On the way, a check valve 36 is installed to prevent the fuel from flowing from the fuel outlet 21 to the sideways shut-off valve 6. There is a divergence from the injection fuel passage 35 which is more downstream than the above-mentioned check valve 36, and a pressure regulating passage 40 which can reach the aforementioned fuel return port 22, and a fuel pressure regulator 15 is interposed in the pressure regulating passage 40. The fuel pressure regulator 15 is provided with a valve seat 42 formed toward the downstream side of the pressure regulating passage 40 on the way; and a valve body 43 which can be positioned opposite the valve seat 42; and With a certain load, the valve body 43 energizes the pressure regulating spring 44 on the valve seat 42 side; when the discharge pressure of the electric fuel pump i 3 becomes a predetermined value or more, the valve body 43 will leave the valve seat 42 The remaining pressure on the fuel return port 22 is relieved. A steam exhaust hole 45 penetrating the top wall of the steam separation chamber 26 is opened on the inner side of the pressure regulating passage 4 0 which is lower than the fuel pressure regulator 15 and passes through the pressure regulating passage 40 at a high speed by the remaining fuel. The raw exhaust effect can impart a negative pressure to the steam exhaust hole 45. Returning to Fig. 1 ', an electronic control unit 47 is provided in front of the air filter 7. The electronic control unit 47 controls the fuel injection valve I and the electric motor in accordance with signals such as the number of engine revolutions Ne, the engine temperature (for example, lubricating oil temperature) Te, the opening degree Th of the throttle valve 10, and the crank position Cp. Operation of the fuel pump 13 and an ignition coil (not shown). Then, during the operation of the engine E, the fuel in the fuel tank τ will cause the fuel supply pipe 23 to retreat to the fuel injection port 20 of the fuel pump module Mp, 11 312 / Invention Specification (Supplement) / 92-04 / 92103502 200304985 is again filtered by the fuel filter 14 and temporarily flows into the steam separation chamber 26. In this way, fuel is supplied to the fuel injection port 20 by gravity. Therefore, if steam occurs in the fuel supply pipe 23, the steam will naturally float up to the lower side of the fuel tank. The fuel flowing into the steam separation chamber 2 6 will be sucked in from the inlet pipe 2 8 by the action of the electric fuel pump 1 3 and pressure-fed from the discharge pipe 3 2, and then pass through the shut-off valve 16 and the check valve 3 6 It is supplied from the fuel outlet to the fuel injection valve I, and is injected from the valve I to the air inlet 4. In the meantime, although the steam generated in the fuel filter 14 and the electric fuel pump 13 is discharged to the steam separation chamber 26, since the fuel and the steam are separated in this chamber 26, the steam will float up and self The steam exhaust hole 4 5 flows out to a pressure regulating passage 40 that is more downstream than the fuel pressure regulator 15. However, in the pressure regulating passage 40, the remaining fuel that opens the valve of the fuel pressure regulator 15 will pass at a high speed as described above, and a negative pressure may be given to the steam exhaust hole 45 by virtue of its exhaust effect. Therefore, it can be effective. The discharge of steam from the steam separation chamber 26 to the pressure regulating passage 40 is promoted, and the steam separation effect in the steam separation chamber 26 can be promoted along with it. In this way, when steam is removed from the fuel filter 14 and the electric fuel pump 13, the fuel injection valve I can supply fuel in a good state that does not contain steam, and the stable operation state of the engine E can always be ensured. The fuel and steam passing through the pressure regulating passage 40 are discharged from the fuel return port 22 through the fuel return pipe 24 to the gas phase portion in the fuel tank τ. Therefore, the vapor can be separated from the fuel in the gas phase portion. Next, referring to Fig. 6, the lateral shutoff valve 16 will be described. The lateral shutoff valve 16 is shown in FIG. 6 (n), and is provided with a cylindrical shape 12312 / Invention Specification (Supplement) / 92-04 / 92103502 200304985 The first valve chamber 5 5; and the opposite second cylinder chamber 5 6 which maintains an inclined posture toward the upper right; the upper end of the first valve chamber 5 5 is connected to the second valve chamber 5 6 of the middle. First and second valve seats 55a, 56a are formed in respective upper portions of the second and second valve chambers 55, 56, and the aforementioned inlet hole 33 is opened in the lower portion of the first valve seat 55a, and the second valve seat The upper part of 56a has the aforementioned outlet hole 34. The lower ends of the first and second valve chambers 56 are closed by spherical plugs 59 and 60, respectively. In the first and second valve chambers 55 and 56 are accommodated spherical valve bodies 58 and 59 each of which can be positioned on the first and second valve seats 55a and 56a. The lower ends of the first and second valve chambers 55 and 56 are occluded by the plugs 59 and 60. Then, in the upright state of the two-wheeled locomotive M, as shown in FIG. 6 (N), the first and second valve bodies 58, 59 can be separated from the first and second valve seats 55a, 56a by their own strength and stay on the bolt. Body 59, 60. Therefore, the inlet hole 33 and the outlet hole 34 are opened to allow fuel to be supplied from the electric fuel pump 13 to the fuel injection valve 1. However, if the two-wheeled locomotive M is turned to the left or right, as shown in FIG. 6 (L) or (R), as the first valve chamber 55 or the second valve chamber 56 turns substantially horizontally, The first valve body 57 or the second valve body 58 will be positioned on the first valve seat 55a or the second valve seat 56a by its inertial force, and both of them will block the inlet hole 33 and the outlet hole 34. In this way, if the first valve body 5 7 or the second valve body 5 8 is temporarily positioned on the first valve seat 5 5 a or the second valve seat 5 6 a, its positioning state can be maintained by the fuel pressure on the side of the inlet hole 3 3 . Therefore, the lateral rotation of the two-wheel locomotive M prevents the fuel from being ejected from the fuel outlet 21 even if there is damage on the fuel injection valve I side. 13 312 / Invention Specification (Supplement) / 92-04 / 92103502 200304985 Figures 2 to 5 show specific examples of the fuel pump mold set Mp as described above. In FIGS. 2 and 3, the module box 12 is formed with a box body 12 a ′ of the main chamber 25 and a partition wall 2 of the box body 12 a which is formed by engaging and sandwiching the box cover 1 2 b forming the steam separation chamber 26. 7, and the cross section is formed into a substantially fan-shaped structure. At this time, sealing members 48, 48 are interposed between the joint surfaces of the box body 12a, the partition wall 27, and the box cover 12b. The cylindrical electric fuel pump is arranged on the center of the sector in the main chamber 25 '. The fuel filter 14 formed in an arc shape is disposed along the arc-shaped portion of the fan in the main chamber 25. In this way, the electric fuel pumps 13 and the fuel filters 14 are arranged in the main chamber 25 such that the longitudinal-direction axes can be parallel to each other. Therefore, it is possible to greatly shorten the entire length of the module box 12 and to combine the cross-sectional shape into a substantially fan shape, thereby enabling miniaturization of the fuel pump module Mp. As shown in FIG. 2 and FIG. 3, a pair of mounting hubs 4 9 and 4 9 arranged in the longitudinal direction are formed on the outer side of the arc-shaped portion of the box body 12 a. These hubs 4 9 and 4 9 are formed by The bolts 50 and 50 are fixed to one of the side walls of the throttle body 6. At this time, the module case 12 is arranged such that the longitudinal direction axis X thereof is formed at a right angle to the axis γ of the intake passage 5 of the throttle valve 6. With this configuration and shortening the entire length of the fuel pump module Mp, the engine intake system can be miniaturized. Further, a fuel injection port 20 is provided on the rear side of the side wall of the tank body 12a, and a fuel outlet 21 is provided on the front side. In particular, the fuel injection port 20 is provided on the front wall of the tank body 1 2 a and is fitted with a fuel injection valve I head 14 312 / Invention Manual (Supplement) / 92-04 / 92103502 200304985 Part cover 5 1 Since it directly communicates with the fuel port of the fuel injection valve i, there is no need to shield the fuel outlet 21 and the fuel injection valve I, and the fuel piping can be simplified. Further, a lateral shutoff valve 16 is incorporated in the box body 12a. On the one hand, a fuel pressure regulator i is assembled in the tank cover 12b: a fuel return port 22 is provided on the rear wall thereof. As described above, if the fuel injection port 20 and the fuel return port 22 are provided on the rear wall of the group box 2, the fuel supply pipe 23 and the return pipe 24 connected to these can be piped at the comparative center of the two-wheeled locomotive M. There may be interference and interference with other items. The other structure is the same as the overall schematic diagram shown in FIG. 5, and the same reference numerals are added to the parts corresponding to FIG. 5 in FIG. 5 and the second embodiment of the present invention shown in FIG. 7 will be described next. In the second embodiment, a filter 61 is provided at the fuel injection port 20 of the module case 12. The fuel inlet 20 communicates with the main chamber 25, and the main 1 is filled with fuel from the fuel tank T, and the fuel is impregnated with the electric fuel 1 1 3 and the fuel filter 1 1 4. These electric fuel pumps 1 1 3 and fuel burners 1 1 4 are placed on the main chamber 25 with their longitudinal axes parallel to each other, as in the previous embodiment. The electric fuel pump 113 has the suction pipe 30 at the main port, sucks the fuel in the main chamber 25, and pressure-feeds the fuel to the fuel tank 4 through the discharge pipe 32. Therefore, in this second embodiment, the fuel filter 4 must be of a high pressure type. The high-pressure fuel portable pipe 2 9 filtered by the fuel filter 1 1 4 is sent to the lateral shutoff valve 16, and is injected from the fuel injection valve I to the engine E in the same way as in the previous embodiment. Inlet 8 312 / Invention Specification (Supplement) / 92-04 / 92103502 Inlet pipe, in the fuel efficiency of the mold Figure 2 is equipped with I 25 pump filter and the opening filter of the distribution room must pass through 15 200304985 The electric fuel pump 1 1 3 has a built-in motor, which usually comes with a brush. Therefore, the brush folding portion is a matter of course, and even the entire motor is cooled by the fuel in the main chamber 25. At this time, although the friction powder generated in the brush bending part will flow to the main room 25, and will be sucked into the electric fuel pump} i 3 together with the fuel ', the friction powder will be placed in the electric fuel pump. It is captured by the fuel filter 1 1 4 on the discharge side of 11 3 and does not flow into the fuel injection valve side. The upper part of the main chamber 25 is a steam separation chamber 26 'which communicates with the side through the hole 62. The steam generated in the main chamber 25 will float up and move to the steam separation chamber 26. The steam exhaust pipe 31 of the electric fuel pump 1 1 3 is opened in the steam separation chamber 26 in the same manner as in the previous embodiment. The other structures are the same as those of the previous embodiment. In FIG. 7, the parts corresponding to the previous embodiment are given the same reference numerals, and the description thereof is omitted. The present invention is not limited to the above-mentioned embodiments, and various design changes can be made to the present invention without departing from the scope thereof. For example, when the engine E is a multi-cylinder, the throttle body 6 may be coupled to the cylinder head 2 through an intake manifold, and a fuel injection valve corresponding to each cylinder may be installed in the intake manifold. Also, at this time, A fuel pump module Mp can be mounted on the intake manifold. (Effects of the Invention) As described above, according to the first feature of the present invention, a fuel injection port for receiving fuel from a fuel tank is opened on the outside, a fuel outlet of a fuel injection valve capable of supplying fuel to the engine, and the remaining fuel is returned to the fuel tank. The fuel return port, such a module box, contains: an electric fuel pump and a fuel filter installed in a straight line of the fuel injection port and the fuel outlet; and indirectly continued at the fuel outlet and the fuel return The fuel pressure regulator 16 312 / Invention Manual (Supplement) / 92-04 / 92103502 200304985 device used in the pressure regulating passage of the vehicle is such a fuel pump module of the vehicle, because the aforementioned electric fuel pump and the aforementioned fuel are used. The longitudinal axes of the filters are arranged to be parallel to each other. The fuel containing the steam generated in the electric fuel pumps and the fuel filters is contained, so that the steam separated from the fuel is sent to the steam of the fuel return port. The separation chamber is provided in the aforementioned module box adjacent to one end in the longitudinal direction of the electric fuel pump and the fuel filter, so that it can greatly shorten the module box Full length, and seek help fuel pump module of miniaturization. In addition, since the steam generated in the fuel filter and the electric fuel pump is separated from the fuel in the steam separation chamber and sent to the fuel return port, the fuel injection valve can supply fuel in a good state without steam, And it can always ensure the stable operation of the engine. According to the second feature of the present invention, in addition to the first feature, the steam discharge hole in the upper part of the steam separation chamber is opened in the pressure regulating passage downstream from the fuel pressure regulator, and the remaining fuel passes through the regulator. The discharge effect produced by the pressure passage can give negative pressure to the aforementioned steam discharge hole. Therefore, not only can the steam from the steam separation chamber be discharged to the pressure regulating passage, but also the steam separation can be promoted in the steam separation chamber. Furthermore, according to the third feature of the present invention, in addition to the first or second feature, since the fuel filter is interposed on the flow path between the fuel injection port and the electric fuel pump, the electric fuel pump may be The brushless motor is built in, and the fuel filter can be an inexpensive low-pressure type. Furthermore, according to the fourth feature of the present invention, in addition to the first or second feature, the module case is filled with fuel by communicating with the fuel injection port, and the electric fuel pump is immersed in the fuel. Electric Fuel Gang 17 312 / Invention Manual (Supplement) / 92-04 / 92103502 200304985 The fuel filter is installed in the flow path between the fuel outlets of Urawa and Nishimura. Therefore, the built-in motor of electric fuel pumps is a normal motor. When a brush is attached, the brush folding portion can also be effectively cooled by the fuel, and the abrasion powder generated in the brush folding portion can be captured by the fuel filter, and the outflow to the fuel injection valve can be prevented. Furthermore, according to the fifth feature of the present invention, in addition to any of the first to fourth features, 'the module box is adjacent to one side of the intake pipe of the engine', so that these module boxes and air intake are The longitudinal axis of the tube is arranged at a substantially right angle. Therefore, the full length and shortening of the fuel pump module are combined, which can reduce the intake system of the engine. [Brief description of the drawings] Fig. 1 is a side view of an important part of a two-wheeled locomotive equipped with a fuel pump module in a first embodiment of the present invention. FIG. 2 is an enlarged longitudinal cross-sectional side view of part 2 of FIG. 1. Fig. 3 is a sectional view taken along line 3-3 in Fig. 2. Fig. 4 is a sectional view taken along the line 4-4 in Fig. 2. Fig. 5 is a schematic diagram of the entire fuel supply system of a two-wheeled locomotive including the fuel pump module. FIG. 6 is an explanatory diagram of the structure and function of a horizontally-turned shut-off valve. Fig. 7 is a schematic diagram of the entire fuel supply system of a two-wheeled locomotive equipped with a fuel pump module in a second embodiment of the present invention. (Description of component symbols) 1 Frame if front tube 18 312 / Invention Manual (Supplement) / 92-04 / 92103502 200304985 lr Rear tube 2 Cylinder head 3 Cylinder block 4 Air inlet 5 Air inlet 6 Air inlet tube (save Fluid) 7 Air filter 8 Exhaust port 9 Exhaust pipe 10 Throttle valve 11 Hub 12 Modular case 12a Phase body 12b Case cover 13 Electric fuel pump (with built-in brushless motor) 14 Fuel filter (low pressure type) ) 15 Fuel pressure regulator 16 Turn-off shut-off valve 2 0 Fuel injection port 2 1 Fuel outlet 22 Fuel return port 23 Fuel supply pipe 24 Fuel return pipe 25 Main chamber 19
312/發明說明書(補件)/92-04/92103502 200304985 26 蒸 汽 分 離 室 27 隔 壁 28 入 □ 管 29 出 □ 管 30 吸 入 管 3 1 蒸 汽 排 出 管 32 吐 出 管 33 入 □ 孔 34 出 □ 孔 3 5 噴 射 燃 料 通 路 36 逆 止 閥 40 調 壓 通 路 42 閥 座 43 閥 體 44 調 壓 彈 簧 45 蒸 汽 排 出 孔 47 電 子 控 制 單 元 48 密 封 構 件 49 安 裝 輪 轂 50 螺 栓 5 1 蓋 子 55 第 1 閥 室 55 a 第 1 閥 座 56 第 2 閥 室 312/發明說明書(補件)/92-〇4/92103502312 / Instruction of the Invention (Supplement) / 92-04 / 92103502 200304985 26 Steam separation chamber 27 Next wall 28 Into the pipe 29 Out of the pipe 30 Intake pipe 3 1 Steam exhaust pipe 32 Out of the pipe 33 Into the hole 34 Out of the hole 3 5 Fuel injection path 36 Check valve 40 Pressure regulating path 42 Valve seat 43 Valve body 44 Pressure regulating spring 45 Steam discharge hole 47 Electronic control unit 48 Sealing member 49 Mounting hub 50 Bolt 5 1 Cover 55 First valve chamber 55 a First valve Seat 56 2nd valve chamber 312 / Invention manual (Supplement) / 92-〇4 / 92103502
20 200304985 56a 第2閥座 57 第1閥體 58 第2閥體 58 > 59 閥體 59、60 栓體 62 帶孔 113 電動燃料幫浦（內藏附帶刷子） 114 燃料過濾器 E 引擎 · I 燃料噴射閥 Μ 車輛（二輪機車）20 200304985 56a 2nd valve seat 57 1st valve body 58 2nd valve body 58 > 59 valve body 59, 60 plug body 62 perforated 113 electric fuel pump (with built-in brush) 114 fuel filter E engine · I Fuel injection valve M vehicle (two-wheel locomotive)
Pm 燃料幫浦模組 T 燃料箱 X 燃料幫浦長度方向軸線 Y 吸氣管（節流體）長度方向軸線 21 312/發明說明書(補件)/92-04/92103502Pm fuel pump module T fuel tank X fuel pump length axis Y suction pipe (throttle) length axis 21 312 / Invention Manual (Supplement) / 92-04 / 92103502