1297373 九、發明說明： 【發明所屬之技術領域】 本發明係關於一燃料泵模組，其配備有一橫向安裝在一 燃料箱中之泵（燃料泵單元）且應用於一車輛發動機之一燃 料系統中。 【先前技術】 一種沿一配備有一内燃機之車輛之燃料供應管線流動之 液體燃料（下文疋義為”燃料”）藉由一安裝在一燃料箱中之 燃料泵從該燃料箱供應至該内燃機。接著，該燃料經由一 燃料噴射器喷射進一發動機之燃燒室中。 種渦輪泵，由於其咼輸送壓力，其正變成慣用之燃料 泵中一事貫標準。在該渦輪泵中，燃料藉由使用一電動機 同速旋轉一葉輪而被吸入且向該發動機供應。 §燃料壓力因該發動機正被停止而降低時，在該發動機 之下次起動時也許不能達到該發動機之平穩起動。 因此，必須藉由使一連接至該發動機之燃料供應管線（燃 料&線）中的燃料壓力保持於一特定水準來確保該發動機 之平穩再起動（起動）， 在丨貝用之燃料供應管線中，為了使靠近該發動機之燃料 Y線中的燃料壓力保持於一特定水準，在該燃料泵之下游 提仏止回閥來防止在該發動機停止過程中燃料向該燃料 ^ 藉由長1供該止回閥，靠近該發動機之供應管線（燃 料管線）中燃料壓力被保持處於與該發動機開動過程中之 燃料壓力相同水準。 97437.doc 1297373 果燃料G力未被保持足夠高，則在該發動機剛剛停止 後由於該發動機之餘熱可使滯留在該供應管線（燃料管線） 中的便:料蒸备。因此，在發動機溫度變涼前當試圖再起動 邊發動機時，如果蒸發之燃料（諸如汽油）遺留在該燃料管線 中，則該發動機之起動可受到干擾。 在近這些年來，為了減少對環境之危害，較佳地降低該 蒸發燃料從一車輛之燃料系統洩漏。因此，期望保持該燃 料壓力處於特定水準，該水準為起動該發動機所需要之最 小水準。這係由於當燃料壓力變高時該燃料之洩漏增加。 在曰本未審查專利公開案第2〇〇1-263187號中已經揭示 一為克服此等問題而設計之燃料泵單元。該燃料泵單元垂 直安裝且如果該發動機側的燃料管線中的燃料壓力超出一 預定水準時就減小該燃料壓力至特定水準。 參考圖4，在此燃料泵單元中，一止回閥44被設置於一燃 料泵系統40之體上。在該止回閥44中，一壓力控制閥46被 設置於一閥外殼49中，該閥外殼49充當一燃料泵41之一出 口。該壓力控制閥46可抗拒一朝向上方且由一力致動器48 給出之出現之力移動。當該發動機側的燃料壓力超過該燃 料泵41側的燃料壓力時，允許一閥45與該壓力控制閥46一 起向下移動。因此，在該止回閥44中，藉由向下移動該閥 45與該壓力控制閥46來控制該闊45上游之壓力與該閥45下 游之壓力。 在該燃料泵系統40中，一燃料泵41被縱向安裝於其中， 且該止回閥44被安裝在該閥外殼49中，該閥外殼被垂直裝 97437.doc 1297373 配在遠燃料栗41之頂部上且充當一出口 43。允許該止回間 44以一向上及向下方向移動。 根據該止回閥44之此等構造，在該發動機之停止過程 中’即使在該發動機起動時候該燃料泵41之輸送壓力為高 壓力，在該發動機側之燃料管線中的燃料壓力不會保持在 一南水準。亦即，在該燃料管線中的燃料壓力被降低至一 最低水準，遠最低水準為下一次起動該發動機至少所必須 的。 、 女上所述，慣用之燃料泵單元之大多數為垂直安裝。但 疋，在日本未審查專利公開案第2003-120453號中已經揭示 燃料泵模組，其在一燃料箱之底部配備有一橫向安裝之 燃料泵單元。 、1297373 IX. Description of the Invention: Technical Field The present invention relates to a fuel pump module equipped with a pump (fuel pump unit) laterally mounted in a fuel tank and applied to a fuel system of a vehicle engine in. [Prior Art] A liquid fuel (hereinafter referred to as "fuel") flowing along a fuel supply line of a vehicle equipped with an internal combustion engine is supplied from the fuel tank to the internal combustion engine by a fuel pump installed in a fuel tank. The fuel is then injected into a combustion chamber of an engine via a fuel injector. Turbine pumps are becoming the standard in conventional fuel pumps due to their helium delivery pressure. In the turbo pump, fuel is sucked into and supplied to the engine by rotating an impeller at the same speed using a motor. § When the fuel pressure is lowered due to the engine being stopped, the smooth start of the engine may not be reached at the next start of the engine. Therefore, it is necessary to ensure a smooth restart (start) of the engine by maintaining the fuel pressure in the fuel supply line (fuel & line) connected to the engine at a specific level, the fuel supply line for the mussel. In order to maintain the fuel pressure in the fuel Y line close to the engine at a specific level, a check valve is provided downstream of the fuel pump to prevent fuel from being supplied to the fuel during the engine stop. The check valve, the fuel pressure in the supply line (fuel line) close to the engine, is maintained at the same level as the fuel pressure during the engine start. 97437.doc 1297373 If the fuel G force is not maintained high enough, the remaining fuel in the supply line (fuel line) can be distilled due to the residual heat of the engine just after the engine is stopped. Therefore, when attempting to restart the side engine before the engine temperature is cooled, if the evaporated fuel (such as gasoline) is left in the fuel line, the starting of the engine may be disturbed. In recent years, in order to reduce the harm to the environment, it is preferable to reduce the leakage of the evaporated fuel from the fuel system of a vehicle. Therefore, it is desirable to maintain the fuel pressure at a particular level that is the minimum level required to start the engine. This is because the leakage of the fuel increases as the fuel pressure becomes higher. A fuel pump unit designed to overcome such problems has been disclosed in pp. The fuel pump unit is mounted vertically and reduces the fuel pressure to a particular level if the fuel pressure in the fuel line on the engine side exceeds a predetermined level. Referring to Figure 4, in the fuel pump unit, a check valve 44 is disposed on a body of a fuel pump system 40. In the check valve 44, a pressure control valve 46 is disposed in a valve housing 49 which serves as an outlet for a fuel pump 41. The pressure control valve 46 resists a force movement that is upwardly directed and occurs by a force actuator 48. When the fuel pressure on the engine side exceeds the fuel pressure on the fuel pump 41 side, a valve 45 is allowed to move downward together with the pressure control valve 46. Therefore, in the check valve 44, the pressure upstream of the flange 45 and the pressure downstream of the valve 45 are controlled by moving the valve 45 and the pressure control valve 46 downward. In the fuel pump system 40, a fuel pump 41 is longitudinally mounted therein, and the check valve 44 is mounted in the valve housing 49, which is vertically fitted with 97437.doc 1297373 in the far fuel pump 41 It acts on the top and acts as an outlet 43. The check room 44 is allowed to move in an upward and downward direction. According to the configuration of the check valve 44, during the stop of the engine, even if the delivery pressure of the fuel pump 41 is high at the time of starting the engine, the fuel pressure in the fuel line on the engine side is not maintained. At a south level. That is, the fuel pressure in the fuel line is reduced to a minimum level that is at least necessary for the next start of the engine. As mentioned above, most of the conventional fuel pump units are vertically mounted. However, a fuel pump module has been disclosed in Japanese Unexamined Patent Publication No. 2003-120453, which is equipped with a laterally mounted fuel pump unit at the bottom of a fuel tank. ,
就車輛來說，在近這些年來，已經要求並促進了有效使 用-車輛體空間。例如，在四輪車情況下，由於限制一車 輛體空間，已經需要盡可能減小該燃料箱之告 輛高度變低時此需求尤其增大。 田該車 在《亥燃料栗核組中，為達到此需求’該燃料箱中的燃 泵單元橫向布置在一燃料箱之底部。 … 口此，用於排出該燃料箱中燃料之燃料泵單元之出口 同β燃料泵單it體_樣指向—侧面方向。於是，藉由使 -電動機高速旋轉一葉輪來吸入且從該出口排出：燃料 由連接該燃料泵單元與該發動機之燃料供應管線供應至 發動機。 〜 虞配日本第2GG1.263187號之燃料泵單元為_相對地吾 97437.doc 1297373 人所熟知之貫踐，該燃料泵單元通常垂直安裝在日本第 2003-120453號之燃料泵模組上。 在此情況下，如圖4所示，充當該燃料之出口 43之閥外殼 49指向該燃料泵系統40之泵葉輪42之旋轉軸之軸向方向。 因此，如果該燃料泵41被橫向安裝，則在該閥外殼钧處 該出口43中提供之該止回閥44亦指向該側面方向。 如果該止回閥44被橫向裝配，則該閥45與該閥座叨之間 被設計為使得該閥45在該發動機停止後由於其自身重量而 自己與該閥座47接觸的互鎖作用不會生效。 亦即’如果該止回閥44橫向裝配，則不能獲得該閥牦與 該閥座47之間之特定接觸。 在此情況下，當由於發動機之停止使燃料壓力降低至一 特定低水準時，可導致發動機中燃料之洩漏或空氣之侵 入。於是，因為該燃料供應管線中燃料之低濃度或空氣袋 使得該發動機中燃燒受到干擾，該發動機下次起動可能需 要一段時間。 因此，一直需要可克服上述之問題且滿足例如下面之需 求之燃料泵模組：1)一燃料泵單元被横向安裝；2)該燃料壓 力控制閥之運動方向為垂直方向；且3)該燃料壓力控制閥 與該燃料泵之體分開設置。 【發明内容】 本發明係關於一具有一燃料泵單元與一燃料通道之燃料 泵模組，該燃料泉單元被橫向設置在一燃料箱之底部上， 該燃料通道將該燃料泵單元之一出口與一燃料過渡器連 97437.doc 1297373 接。在此燃料泵模組中，在定位於一泵外殼中的該燃料通 道内設置一燃料壓力控制閥，且設置該燃料壓力保持閥之 位置位於該燃料通道上該燃料通道相對該燃料泵單元之軸 向方向垂直放置之處。 在該燃料泵模組中，較佳地定位於一泵外殼中的該燃料 通道包括一泵連接部分及一過濾器連接器。 而且，在該燃料泵模組中，較佳地該燃料壓力保持閥被 設置於連接至該出口之泵連接部分之燃料通道中。 此外，在該燃料泵模組中，該燃料壓力保持閥包括一閥， 其相對於該燃料泵單元之軸向方向在一垂直方向上致動。 在本發明中，在定位於一泵外殼中的該燃料通道内設置 該燃料壓力保持閥，且設置該燃料壓力保持閥之位置位於 該燃料通道上該燃料通道相對該燃料泵單元之軸向方向垂 直放置之處。於是，當該發動機停止時，即使該燃料泵單 元被橫向安裝，該燃料壓力可被保持在高水準。由於可減 小經由該燃料壓力保持閥之燃枓壓力之降低，類似於一配 備有一垂直安裝之燃料泵單元之燃料泵模組，可獲得該發 動機之平穩起動。 【實施方式】 下面將參考圖式來解釋本發明之較佳實施例。 如圖1所示，一配備有一橫向安裝之燃料泵單元12之燃料 泵模組1包括一燃料泵外殼部分3(下文表示為”泵外殼3，·）。 該泵外殼3包括該燃料泵單元12與一外殼1〇。該燃料泵單元 12被橫向設置於一燃料箱2之底部上。如圖丨所示，一 97437.doc -10- 1297373 管線16在其一泵連接部分14處與該燃料泵單元^之一出口 13連接且在其一過濾器連接器25處與一燃料過濾器2〇連 接。 在忒泵外殼3中，在該燃料管線16之泵連接部分14中提供 一止回閥5，且該止回閥充當燃料壓力保持閥。該止回閥$ 之裝配使得其縱向軸線垂直於該燃料泵單元12之一軸向方 向X。亦即，該止回閥5被安裝於該燃料管線16中使得其縱 向方向變成垂直於該水準線（軸向方向X)。 在本g加例中，較佳地其中安裝有該止回閥$之燃料管線 16垂直於一水準線裝配。 仁疋，、要當該發動機停止時該止回閥5與一閥座(見 圖3)之間之互鎖會依靠該止回閥5之自重來實現，該燃料管 線16即可相對該水準線以一特定角度傾斜。亦即，只要一 頭部分5b與一閥座丸之間燃料之洩漏可被阻止，該燃料管 線16即可相對該水準線以一特定角度傾斜。 該燃料泵模組1主要由該燃料泵外殼部分（泵外殼）3與該 燃料過濾器20組成。該泵外殼3包括該燃料泵單元12與該外 殼10。 該外殼10在其中容納該燃料泵單元12且該燃料泵單元12 相對該燃料箱2之底部橫向設置。該外殼10包括一在其中容 納該燃料泵單元12之體11與該燃料管線16。 該燃料管線16在其一端具有該泵連接部分14且在其另一 端具有該過濾器連接器25。在該泵連接部分14之端部上提 供一連接開口 14a(見圖3)以及在該過濾器連接器25之端部 97437.doc -11 - 1297373 上提供有一將被連接至該燃料過濾器20之過濾器連接開口 (未顯示）。 該燃料管線16可被設置於該體11中且可獨立於該體11分 開設置。 此處’該泵連接部分14與該過濾器連接器25可與該燃料 管線16—起形成。該泵連接部分14與該過濾器連接器25可 獨立於該燃料管線16分開形成。在該實施例中，如圖1所 示，該泵連接部分14與該過濾器連接器25獨立於該燃料管 線16分開形成。 該泵連接部分14設置於該外殼10之體11之一侧。在圖1之 情況中，該泵連接部分14被設置在右側。 該泵連接部分14之連接開口 14a(見圖3)與該燃料泵單元 12之出口 13連接。該過濾器連接器25之過濾器連接開口與 該燃料過濾器20之一入口連接。 該燃料過渡器20包括一過濾、器元件21、一殼體22、一凸 緣23、及一支撐腿24。該殼體22與該凸緣23藉由焊接連接 在一起且合併成一整體。由該殼體22與凸緣23佔據之空間 充當一過濾、器殼體，且該過渡器元件21封裝在該過滤器殼 體中。 在圖1中，該外殼10之體11在其中容納該燃料泵單元12與 一吸入過滤器30。該吸入過濾器30被設置在該燃料栗單元 12之底部且與該燃料泵單元12之一入口連接。 在本實施例中，為確保執行從該燃料箱2之燃料吸入，該 外殼10被設置於該體11中使得當燃料填充至該容量時，該 97437.doc -12- 1297373 外冗又10浸沒在該燃料♦。 因此，在本實施例中，該體u用於傳遞該燃料箱2中的燃 科進入該體11中。亦即’該體u之設計使得填充於該燃料 42中的燃料被平穩地引導至該燃料泵單元12。 於是，該燃料I單元12經由該吸人過攄器3G吸取該舞料 箱2中的燃料。從而，確保相對大尺寸之異物從該燃料移除。 如圖1所示，一在該體11上提供之燃料發送器31測量該婵 :箱2中的燃料液面高度，且輸出一表示該燃料液面高度之 4號至一諸如燃料液面高度感測器單元之控制單元（未顯 示）。藉由該燃料果單元12吸入之燃料經由該出口 13排出且 供應至該燃料管線丨6之泵連接部分丨4。 如圖2所示，該外殼10與該燃料過濾器20分開提供使得在 其中間提供-間隔。該燃料過濾器2〇被固定至該燃料箱2 之開口（見圖1)。在該外殼1〇與該燃料過濾器2〇之間具有充 分間隔之連接結構如圖2所表示，該外殼1〇在圖2中表示， 其中該泵谷器之一部分由一截面圖表示。 忒燃料過濾器20放置在該外殼丨〇上使得該燃料過濾器2〇 藉由若干支撐腿24架在該外殼1〇上，該等支撐腿24各自與 該外殼10之支撐件19連接。 如圖2所不，該支撐腿24為一中空框架元件且在其一端固 疋至该燃料過濾器20，且其中儲存有一螺旋壓縮彈簧24a。 升> 成於该外殼10上的該支撑件19在其頂部具有一彈簧接收 孔19a’該孔19a接收該螺旋壓縮彈菁24a。 當該支撐腿24與該支撐件19連接時，該支撐腿24之螺旋 97437.doc -13- 1297373 壓縮彈簧24a插入該彈簧接收孔19a中。從而，該燃料過濾 器20藉由該螺旋壓縮彈簧24a彈性支撐且放置於該外殼⑺ 之上，在該燃料過濾器2〇與該外殼1〇之間具有一小間隔。 從而藉由該支撐腿24與該支撐件19將該外殼1〇與該燃料 過濾器20連接起來，在該外殼與該燃料過濾器之間具有一 預疋之間隔。在本實施例中，由於該螺旋壓縮彈簧安裝 在該支撐腿24中，一在相反方向彼此推該外殼1〇與該燃料 過濾1§ 20之力各自施加於該外殼1〇與該燃料過濾器。 根據此裝配，布置在該燃料泵單元12(其儲存在該外殼 中）之底部上的該吸入過濾器3 〇被連續推靠在該燃料箱2之 底部，即使由於該箱中壓办之變化或車輛行進過程中的振 動而出現該燃料箱之變形亦如此。從而，靠近該燃料箱2 之底部之燃料必定經由該吸入過濾器30而吸入。 此處，為探測該燃料箱中燃料之高度而提供一浮標Μ。 下一步，將解釋位於該燃料泵單元12之出口 13與提供有 5亥止回閥5之泵連接部分14之間之連接結構。 具有該燃料泵單元12之圓柱形狀之出口 13與設置於該外 又10之體11中的该泵連接部分14連接，其中該燃料泵單元 橫向設置於該燃料箱2中。 、在本實施例中’如圖3所示’該出口 13與該聚連接部分14 被連接使得該出口 13被封裝在該泵連接部分14之連接開口 14a 中。 該泵連接部分14包括該連接開口 14a、一彎曲部分14b、 一閥入口 14c、一閥座部分14d、及一閥外殼He。 97437.doc -14- 1297373 ―該連接開口 14a與該出口 13連接。該彎曲部分⑷將燃料 g線16與具有比該出口 13直徑小的燃料管線相連接，並 改變燃料供應方向，使其從_水平方向改變至—相對一水 準線（一軸向方向X)之垂直方向。 該閥外殼14e在其中擁有該止回閥5且使用一結合物或焊 接與該閥座部分14d連接在一起。 如圖3所示，一閥座部分14d與一閥外殼I4e緊靠該彎曲部 分14b定位。該彎曲部分14b與該閥座部分14d藉由一隔板 14f相互連接，該隔板具有一小直徑閥入口 14〇。 如圖1所示，該泵連接部分14充當該燃料管線16之一部分 將該燃料泵單元12之出口 13與該過濾器連接器25之一過濾 器連接開口相連接。 在此實施例中，如圖1所示，設置該止回閥5之位置為該 燃料管線16之泵連接部分14。但是可改變設置該止回閥5 之位置至該燃料管線16中其他位置。例如，該止回閥5可被 設置於該燃料管線16之過濾器連接器25中，或者設置於該 泵連接部分14與該過濾、器連接器25之間之該燃料管線j 6 中。但是，必須相對該水準線垂直放置該止回閥5。 下一步，將解釋用作一燃料壓力保持閥之該止回閥5之構 造。 如圖3所示，該止回閥5包括一閥5 a、一制動器5 f、該闕 座5c、以及^一闕出口5e。該闕5a由一具有一半球形之頭部 分5b與一軸部分5g組成。該制動器5f在其中容納該軸部分 5g並控制該閥5a之上下方向移動。 97437.doc -15- 1297373 該閥座5c形成於該隔板14f上。在本實施例中，以該頭部 分5b與該隔板14f彼此接觸之位置充當該闕座5c。 »亥制動态5f安裝於該閥外殼⑷中並在相對該頭部分讣 之相反側藉由加熱填隙而固定至該閥外殼W。 從該燃料栗供應之燃料經由該閥入口 14c進入該止回閥5 並沿―在該制動H5f周圍形成之通道％流動。於是，從該 止回閥出口 5e排出之燃料向下游流動。 在該κ施例中，作為該止回閥5之形狀之一實例，使用了 具有一半球形狀之止回閥。但是，可採納具有一圓錐形狀 或球形之止回閥作為本發明之止回閥。 下面，可給出關於該燃料過濾器2〇之說明。 如圖1所不，該燃料過濾器2〇之凸緣23形成於該殼體Μ 之上端部上。 該燃料泵模組1藉由固定該凸緣23至該燃料箱2之開口上 而安裝於該燃料箱2中。 在該燃料泵模組1之燃料箱2外部延伸之上端部分具有一 主管線連接單元27與一連接器29。 在該實施例中，由於該主管線連接單元27與一主管線（未 顯不）連接，經由該燃料泵模組丨從該燃料箱2吸入之燃料經 由一主官線供應至該發動機。該連接器29與一充當控制單 元之燃料泵控制器單元（PFC單元）連接。 用於控制供應至該發動機之燃料之燃料壓力符合該發動 機之狀悲、之該PFC單元基於從一發動機控制單元（ECU)(未 顯示）進入之信號來控制該燃料泵單元12之電流值或電壓。 97437.doc -16- 1297373 利用從該ECU進入之資訊（信號）藉由該pFC執行之操作 方去可藉由採納在日本未審查專利公開案第2〇〇卜2丨4827 號中揭示之操作方法來代表。 +下面，將參考圖1至圖3來解釋根據本實施例之該燃料泵 模組1之運動。 …該燃料泵模組1為一不歸型燃料泵，其中直接控制來自該 *…料泵單元12之燃料之輸送壓力用於保持該燃料壓力處於 一適當之水準。 口此，在該發動機之起動過程中，除了藉由連續起動該 1…：；斗|單元12來保持該燃料之輸送壓力處於一特定水準 外，為控制該燃料壓力還使用一回流閥（未顯示）來使一部分 燃料流回燃料箱2。 當打開該燃料泵單元12時，該燃料箱2中的燃料藉由旋轉 一葉輪（未顯示）經由一吸入過濾器3〇而吸入該燃料泵單元 12中。 吸入該燃料泵單元12中的燃料經由在該燃料泵單元12之 一軸向方向X上設置之該出口 13排出，且接著該燃料供應至 忒泵連接部分14之連接開口 14a，該連接部分14設置於該外 殼10之體11中。 該彎曲部分14b改變燃料供應之方向，使其從一水平方向 改變至一相對一水準線（一軸向方向X)之垂直方向。從該燃 料果單元12供應之燃料經由該閥入口 14c進入該止回閥5且 沿一在該制動器5f周圍形成之通道5d流動。接著，從該閥 出口 5e排出之燃料向下游流動。 97437.doc 1297373 從該泵連接部分14經由該止回閥5排出之燃料沿該燃料 管線16流動’且經由該過濾器連接器（未顯示）供應至該燃料 過濾器20之入口。接著該燃料供應至該燃料過濾器2〇。 進入該燃料過濾器20之燃料流經該過濾器元件21。在此 場合，小的異物從該燃料中移除。 流經該過濾器元件21之燃料沿該燃料過濾器2〇中的通道 机動且供應至該主官線連接單元27。接著，經由該主管線 連接單S27排出之燃料沿連接至該主管線連接單⑶之主 管線（未顯示）流動且被供應至該發動機。 流經該過遽器元件21之燃料之壓力藉由一在該連接器29 上提供之壓力感測器（未顯示）來探測。於是，指示該壓力之 探測值之信號提供給該PFC單元。於是基於該信號，控制來 自該燃《單元12之燃料之輸送壓力用於保持供應至該發 動機之燃料之壓力處於一特定水準。 在本實施例中，從該燃料泵單元12之出口 13排出之燃料 之燃料供應之方向為該泵之一軸向方向χ(見圖”。於是， 在該止回閥5之閥人口 14e附近形成之該f曲部分㈣處，該 燃料供應之方向改變至一相對該泵之軸向方向又之垂直方 向0 於是，流動方向從該燃料泵單元12之一軸向方向χ改變至 一垂直方向之燃料沿該止回閥5流動。從而，由於燃料之壓 力，該止回閥5之閥5a被向上推動且自該閥座&脫離，且被 向上推動直到該頭部分5b之-平面部分5h在該制動器_ 停止。 97437.doc -18- 1297373 於是，從該間入口 14c進入之燃料經由該頭部分％與該閥 座5c之間之間隙流走，且沿該間^與通道^流動，且接著 供應^該閥出口56。從該闕出口 5e排出之燃料沿該燃料管 •良二動且進入到5亥燃料過濾器20。流經該燃料過濾器2〇 之燃料經由喷射器(未顯示)被供應至該發動機之燃燒室。 當該燃料泵單元12依照該發動機之停止而停止時，不再 從該燃料箱2藉由該燃料泵模組丨進行燃料之輸送。 在此％合，在該主管線（未顯示）令之燃料壓力變的比該 燃料泵模組1中的燃料壓力要高。 由於該主管線與該燃料泵模組丨之間壓力之差異，該止回 閥5之閥5a在其一平面部分5h處受到指向上游之力（在圖i 中向下）且向下移動。於是，由於該止回閥5之頭部讣與該 閥座5c結合在一起，因此該頭部5b與該閥座5C之間之間隙 關閉。 在此場合，由於該止回閥5之頭部5b與該閥座氕接觸，該 止回閥5之狀態從”打開狀態”改變至”關閉狀態"。從而，可 防止該燃料之反向流動及燃料壓力降低之發生。 於是，該主管線中燃料之壓力可被保持在與從該燃料泵 單元12輸送之壓力水準相同，其中該主管線將該主管線連 接單元27與該發動機相連接。 在此情況下，由於該止回閥5被裝配為垂直於該燃料泵單 疋12之軸向方向X，所以無論該發動機之狀態如何，該閥化 之移動方向為垂直方向。亦即，在該發動機之停止過程中 由於背壓使圖1中該閥5a向下移動，且當該發動機處於活動 97437.doc -19- 1297373 狀態時由於正壓使圖1中該閥5a向上移動。 於疋’由於該閥5a除了該壓力（即背壓或正壓）外還接收其 自重，因此可平穩獲得該閥5a之上下方向移動。 另外，在本實施例中，由於該閥座5c形成為一球形或半 球形’所以該閥5a與該閥座5c可彼此平穩接觸。 由於其自重使得該閥5a向該閥座5c方向推動，因此在該 發動機停止後，可保持該閥5a與該閥座5c之間之耦合（互 鎖）。因此’由於該閥5a與該閥座5c之間之互鎖得到改進， 所以可降低該閥5a與一閥座5c之間燃料之洩漏。 此外，在本實施例中，幾乎可限制施加於閥5&且干擾該 閥5 a之上下方向移動的彎矩出現。 因此，由於可藉由延伸該軸部分5g之長度來擴展該閥5a 之衝程’所以可提高在該止回閥5中設計最大燃料流動之自 由度。 如上所述，在該配備有橫向安裝泵之燃料泵模組1中，由 於該止回閥5(燃料壓力保持閥）被垂直安裝，因此該管線中 之燃料壓力可保持在與垂直安裝燃料泵之場合相同之壓力 水準。從而，可防止燃料之茂漏。 從而，可改進該發動機之平穩起動。 【圖式簡單說明】 圖1為該配備有一燃料泵容器之燃料泵模組之說明性視 圖’其一部分藉由一截面圖與一剖視圖來顯示。 圖2為該配備有一燃料泵容器之燃料泵模組之說明性視 圖’其一部分藉由一截面圖來顯示。 97437.doc -20- 1297373 圖3為顯不該栗外殼之燃料壓力保持閥之構造之說明性 視圖，其一部分藉由剖視圖來顯示。 圖4為慣用燃料泵裝置之說明性視圖，其一般垂直安裝。 【主要元件符號說明】 1 燃料泵模組 2 燃料箱 3 一燃料泵外殼部分 5 止回闊 5a 閥 5b 頭部分 5c 閥座 5d 通道 5e 閥出口 5f 制動器 5g 軸部分 5h 平面部分 10 泵外殼 11 體 12 燃料泵單元 13 出口 14 果連接部分 14a 一連接開口 14b 彎曲部分 14c 一閥入口 97437.doc -21 - 1297373 14d 閥座部分 14e 閥外殼 14f 隔板 14g 入口通道 16 燃料管線 18 浮標 19 支撐件 19a 彈簧接收孔 20 燃料過濾器 21 過濾器元件 22 殼體 23 凸緣 24 支撐腿 24a 螺旋壓縮彈簧 25 過濾器連接器 27 主管線連接單元 29 連接器 30 吸入過濾、器 31 燃料發送器 40 燃料果糸統 41 燃料泵 42 泵葉輪 43 出α 44 止回閥 97437.doc -22- 1297373 45 閥 46 壓力保持閥 47 閥座 48 力致動器 49 閥外殼 97437.doc - 23 -As far as vehicles are concerned, in recent years, effective use-vehicle space has been demanded and promoted. For example, in the case of a four-wheeled vehicle, this demand is particularly increased when it is necessary to reduce the height of the fuel tank as much as possible by limiting the space of one vehicle. The car in the "Hai fuel chestnut core group, in order to meet this demand", the fuel pump unit in the fuel tank is arranged laterally at the bottom of a fuel tank. The mouth of the fuel pump unit for discharging the fuel in the fuel tank is directed to the side direction of the beta fuel pump. Thus, it is sucked in and discharged from the outlet by rotating the motor at a high speed: the fuel is supplied to the engine by a fuel supply line connecting the fuel pump unit and the engine. ~ The fuel pump unit of Japan No. 2 GG1.263187 is a well-known practice. The fuel pump unit is usually installed vertically on the fuel pump module of Japanese No. 2003-120453. In this case, as shown in Fig. 4, the valve housing 49 serving as the outlet 43 of the fuel is directed in the axial direction of the rotary shaft of the pump impeller 42 of the fuel pump system 40. Therefore, if the fuel pump 41 is laterally mounted, the check valve 44 provided in the outlet 43 at the valve casing 亦 is also directed to the side direction. If the check valve 44 is laterally assembled, the interlocking effect between the valve 45 and the valve seat 被 is designed such that the valve 45 itself is in contact with the valve seat 47 due to its own weight after the engine is stopped. Will take effect. That is, if the check valve 44 is laterally assembled, the specific contact between the valve dam and the valve seat 47 cannot be obtained. In this case, when the fuel pressure is lowered to a certain low level due to the stop of the engine, leakage of fuel or intrusion of air in the engine may be caused. Thus, because the low concentration of fuel in the fuel supply line or the air bag causes combustion to be disturbed in the engine, it may take a while for the engine to start next time. Accordingly, there is a continuing need for a fuel pump module that overcomes the above problems and meets, for example, the following requirements: 1) a fuel pump unit is mounted laterally; 2) the fuel pressure control valve is moving in a vertical direction; and 3) the fuel The pressure control valve is disposed separately from the body of the fuel pump. SUMMARY OF THE INVENTION The present invention relates to a fuel pump module having a fuel pump unit and a fuel passage, the fuel spring unit being laterally disposed on a bottom of a fuel tank, the fuel passage exiting one of the fuel pump units Connected to a fuel transition unit 97437.doc 1297373. In the fuel pump module, a fuel pressure control valve is disposed in the fuel passage positioned in a pump casing, and the fuel pressure maintaining valve is disposed on the fuel passage, and the fuel passage is opposite to the fuel pump unit. Where the axial direction is placed vertically. In the fuel pump module, the fuel passage preferably positioned in a pump housing includes a pump connection portion and a filter connector. Moreover, in the fuel pump module, preferably, the fuel pressure holding valve is provided in a fuel passage connected to a pump connecting portion of the outlet. Further, in the fuel pump module, the fuel pressure holding valve includes a valve that is actuated in a vertical direction with respect to an axial direction of the fuel pump unit. In the present invention, the fuel pressure maintaining valve is disposed in the fuel passage positioned in a pump casing, and the position of the fuel pressure maintaining valve is disposed on the fuel passage in an axial direction of the fuel passage unit relative to the fuel pump unit Placed vertically. Thus, when the engine is stopped, the fuel pressure can be maintained at a high level even if the fuel pump unit is laterally mounted. Since the reduction in the combustion pressure via the fuel pressure holding valve can be reduced, a smooth start of the engine can be obtained similar to a fuel pump module equipped with a vertically mounted fuel pump unit. [Embodiment] Hereinafter, preferred embodiments of the present invention will be explained with reference to the drawings. As shown in Fig. 1, a fuel pump module 1 equipped with a laterally mounted fuel pump unit 12 includes a fuel pump housing portion 3 (hereinafter referred to as "pump housing 3,"). The pump housing 3 includes the fuel pump unit. 12 and a casing 1. The fuel pump unit 12 is laterally disposed on the bottom of a fuel tank 2. As shown in Fig. ,, a 97437.doc -10- 1297373 line 16 is at a pump connection portion 14 thereof. An outlet 13 of the fuel pump unit is connected and connected to a fuel filter 2 at a filter connector 25. In the pump housing 3, a check is provided in the pump connection portion 14 of the fuel line 16. Valve 5, and the check valve acts as a fuel pressure holding valve. The check valve is assembled such that its longitudinal axis is perpendicular to one of the axial directions X of the fuel pump unit 12. That is, the check valve 5 is mounted to The fuel line 16 is such that its longitudinal direction becomes perpendicular to the level line (axial direction X). In the present embodiment, preferably, the fuel line 16 in which the check valve is mounted is mounted perpendicular to a level line. Ren Hao, to be the check valve 5 and a valve seat when the engine is stopped ( The interlock between Fig. 3) is achieved by the self-weight of the check valve 5, and the fuel line 16 can be inclined at a specific angle with respect to the level line. That is, as long as the head portion 5b and a valve seat are between The leakage of fuel can be prevented, and the fuel line 16 can be inclined at a specific angle with respect to the level line. The fuel pump module 1 is mainly composed of the fuel pump casing portion (pump casing) 3 and the fuel filter 20. The pump housing 3 includes the fuel pump unit 12 and the housing 10. The housing 10 houses the fuel pump unit 12 therein and the fuel pump unit 12 is disposed laterally relative to the bottom of the fuel tank 2. The housing 10 includes a housing therein The body 11 of the fuel pump unit 12 is connected to the fuel line 16. The fuel line 16 has the pump connection portion 14 at one end thereof and the filter connector 25 at the other end thereof. Provided at the end of the pump connection portion 14 A connection opening 14a (see Fig. 3) and a filter connection opening (not shown) to be connected to the fuel filter 20 are provided at the end portions 97437.doc -11 - 1297373 of the filter connector 25. Fuel line 16 can It is disposed in the body 11 and can be separately provided independently of the body 11. Here, the pump connecting portion 14 and the filter connector 25 can be formed together with the fuel line 16. The pump connecting portion 14 and the filtering The connector 25 can be formed separately from the fuel line 16. In this embodiment, as shown in Figure 1, the pump connection portion 14 and the filter connector 25 are formed separately from the fuel line 16. The pump connection The portion 14 is disposed on one side of the body 11 of the outer casing 10. In the case of Fig. 1, the pump connecting portion 14 is disposed on the right side. The connecting opening 14a (see Fig. 3) of the pump connecting portion 14 and the fuel pump unit 12 outlets 13 are connected. The filter connection opening of the filter connector 25 is connected to an inlet of the fuel filter 20. The fuel transition unit 20 includes a filter element 21, a housing 22, a flange 23, and a support leg 24. The housing 22 and the flange 23 are joined together by welding and merged into one piece. The space occupied by the housing 22 and the flange 23 acts as a filter housing and the transition element 21 is encapsulated in the filter housing. In Fig. 1, the body 11 of the outer casing 10 houses the fuel pump unit 12 and a suction filter 30 therein. The suction filter 30 is disposed at the bottom of the fuel pump unit 12 and is connected to an inlet of the fuel pump unit 12. In the present embodiment, to ensure that fuel intake from the fuel tank 2 is performed, the outer casing 10 is disposed in the body 11 such that when the fuel is filled to the capacity, the 97437.doc -12- 1297373 is immersed and immersed in 10 In the fuel ♦. Therefore, in the present embodiment, the body u is used to transfer the fuel in the fuel tank 2 into the body 11. That is, the design of the body u allows the fuel filled in the fuel 42 to be smoothly guided to the fuel pump unit 12. Thus, the fuel I unit 12 draws the fuel in the dance box 2 via the suction filter 3G. Thereby, it is ensured that a relatively large-sized foreign matter is removed from the fuel. As shown in FIG. 1, a fuel transmitter 31 provided on the body 11 measures the height of the fuel level in the tank 2, and outputs a value indicating the height of the fuel level 4 to a liquid level such as a fuel level. Control unit of the sensor unit (not shown). The fuel sucked in by the fuel fruit unit 12 is discharged through the outlet 13 and supplied to the pump connecting portion 丨4 of the fuel line 丨6. As shown in Fig. 2, the outer casing 10 is provided separately from the fuel filter 20 such that a space is provided therebetween. The fuel filter 2 is fixed to the opening of the fuel tank 2 (see Fig. 1). A connection structure having a sufficient spacing between the outer casing 1 and the fuel filter 2A is shown in Fig. 2, and the outer casing 1 is shown in Fig. 2, wherein a portion of the pumping vane is shown by a cross-sectional view. The helium fuel filter 20 is placed on the casing so that the fuel filter 2 is supported on the casing 1 by a plurality of support legs 24, each of which is coupled to the support 19 of the casing 10. As shown in Fig. 2, the support leg 24 is a hollow frame member and is fixed at one end thereof to the fuel filter 20, and a spiral compression spring 24a is stored therein. The support member 19 formed on the outer casing 10 has a spring receiving hole 19a' at the top thereof. The hole 19a receives the spiral compression elastomer 24a. When the support leg 24 is coupled to the support member 19, the screw 97437.doc - 13 - 1297373 compression spring 24a of the support leg 24 is inserted into the spring receiving hole 19a. Thus, the fuel filter 20 is elastically supported by the helical compression spring 24a and placed on the outer casing (7) with a small space between the fuel filter 2 and the outer casing 1''. The outer casing 1 is thus coupled to the fuel filter 20 by the support leg 24 and the support member 19, with an intervening space between the outer casing and the fuel filter. In the present embodiment, since the helical compression spring is mounted in the support leg 24, a force pushing the outer casing 1 and the fuel filter 1 § 20 in opposite directions are respectively applied to the outer casing 1 and the fuel filter. . According to this assembly, the suction filter 3 布置 disposed on the bottom of the fuel pump unit 12 (which is stored in the outer casing) is continuously pushed against the bottom of the fuel tank 2 even if the pressure is changed due to the pressure in the tank This is also the case with the deformation of the fuel tank that occurs during vibration of the vehicle. Thus, the fuel near the bottom of the fuel tank 2 must be sucked through the suction filter 30. Here, a buoy is provided to detect the height of the fuel in the fuel tank. Next, the connection structure between the outlet 13 of the fuel pump unit 12 and the pump connecting portion 14 provided with the 5th check valve 5 will be explained. An outlet 13 having a cylindrical shape of the fuel pump unit 12 is connected to the pump connecting portion 14 provided in the body 11 of the outer casing 10, wherein the fuel pump unit is disposed laterally in the fuel tank 2. In the present embodiment, as shown in Fig. 3, the outlet 13 and the poly-connecting portion 14 are connected such that the outlet 13 is housed in the connecting opening 14a of the pump connecting portion 14. The pump connecting portion 14 includes the connecting opening 14a, a curved portion 14b, a valve inlet 14c, a valve seat portion 14d, and a valve housing He. 97437.doc -14- 1297373 - The connection opening 14a is connected to the outlet 13. The curved portion (4) connects the fuel g-line 16 to a fuel line having a smaller diameter than the outlet 13 and changes the fuel supply direction from a horizontal direction to a relative level (an axial direction X). Vertical direction. The valve housing 14e has the check valve 5 therein and is coupled to the seat portion 14d using a combination or weld. As shown in Fig. 3, a valve seat portion 14d is positioned adjacent to a curved portion 14b with a valve housing I4e. The curved portion 14b and the valve seat portion 14d are interconnected by a partition 14f having a small diameter valve inlet 14A. As shown in Figure 1, the pump connection portion 14 acts as a portion of the fuel line 16 to connect the outlet 13 of the fuel pump unit 12 to one of the filter connection openings of the filter connector 25. In this embodiment, as shown in Fig. 1, the position of the check valve 5 is set to be the pump connecting portion 14 of the fuel line 16. However, the position at which the check valve 5 is placed can be changed to other positions in the fuel line 16. For example, the check valve 5 can be disposed in the filter connector 25 of the fuel line 16 or in the fuel line j 6 between the pump connecting portion 14 and the filter connector 25. However, the check valve 5 must be placed perpendicular to the level line. Next, the configuration of the check valve 5 serving as a fuel pressure holding valve will be explained. As shown in Fig. 3, the check valve 5 includes a valve 5a, a brake 5f, a seat 5c, and a port 5e. The crucible 5a is composed of a head portion 5b having a half-spherical shape and a shaft portion 5g. The brake 5f accommodates the shaft portion 5g therein and controls the valve 5a to move in the up and down direction. 97437.doc -15- 1297373 The valve seat 5c is formed on the partition plate 14f. In the present embodiment, the position where the head portion 5b and the partition plate 14f are in contact with each other serves as the sley 5c. The hai dynamic 5f is mounted in the valve housing (4) and is fixed to the valve housing W by heating caulking on the opposite side of the head portion 讣. The fuel supplied from the fuel pump enters the check valve 5 via the valve inlet 14c and flows along the passage % formed around the brake H5f. Thus, the fuel discharged from the check valve outlet 5e flows downstream. In the κ embodiment, as an example of the shape of the check valve 5, a check valve having a half ball shape is used. However, a check valve having a conical shape or a spherical shape can be adopted as the check valve of the present invention. Below, an explanation will be given regarding the fuel filter 2A. As shown in Fig. 1, the flange 23 of the fuel filter 2 is formed on the upper end of the casing 。. The fuel pump module 1 is mounted in the fuel tank 2 by fixing the flange 23 to the opening of the fuel tank 2. An upper end portion extending outside the fuel tank 2 of the fuel pump module 1 has a main line connecting unit 27 and a connector 29. In this embodiment, since the main line connecting unit 27 is connected to a main line (not shown), fuel sucked from the fuel tank 2 via the fuel pump module is supplied to the engine via a main line. The connector 29 is connected to a fuel pump controller unit (PFC unit) serving as a control unit. The fuel pressure for controlling the fuel supplied to the engine is in accordance with the sorrow of the engine, and the PFC unit controls the current value of the fuel pump unit 12 based on a signal from an engine control unit (ECU) (not shown) or Voltage. 97437.doc -16- 1297373 The operation of the pFC is performed by the information (signal) entered from the ECU, and the operation disclosed in Japanese Unexamined Patent Publication No. 2, No. 4, No. 4, 027 The method to represent. + Hereinafter, the movement of the fuel pump module 1 according to the present embodiment will be explained with reference to Figs. 1 to 3. The fuel pump module 1 is a non-return type fuel pump in which the delivery pressure of the fuel from the pump unit 12 is directly controlled to maintain the fuel pressure at an appropriate level. Therefore, during the starting of the engine, in addition to continuously starting the 1...:; bucket|unit 12 to keep the delivery pressure of the fuel at a certain level, a return valve is also used to control the fuel pressure (not Show) to return a portion of the fuel to the fuel tank 2. When the fuel pump unit 12 is opened, the fuel in the fuel tank 2 is sucked into the fuel pump unit 12 via a suction filter 3 by rotating an impeller (not shown). The fuel sucked into the fuel pump unit 12 is discharged via the outlet 13 provided in one axial direction X of the fuel pump unit 12, and then the fuel is supplied to the connection opening 14a of the pump connection portion 14, the connection portion 14 It is disposed in the body 11 of the outer casing 10. The curved portion 14b changes the direction of the fuel supply from a horizontal direction to a vertical direction with respect to a horizontal line (an axial direction X). The fuel supplied from the fuel unit 12 enters the check valve 5 via the valve inlet 14c and flows along a passage 5d formed around the brake 5f. Then, the fuel discharged from the valve outlet 5e flows downstream. 97437.doc 1297373 Fuel discharged from the pump connection portion 14 via the check valve 5 flows along the fuel line 16 and is supplied to the inlet of the fuel filter 20 via the filter connector (not shown). The fuel is then supplied to the fuel filter 2〇. Fuel entering the fuel filter 20 flows through the filter element 21. In this case, small foreign matter is removed from the fuel. The fuel flowing through the filter element 21 is maneuvered along the passage in the fuel filter 2 and supplied to the main official line connecting unit 27. Then, the fuel discharged via the main line connection unit S27 flows along the main line (not shown) connected to the main line connection unit (3) and is supplied to the engine. The pressure of the fuel flowing through the filter element 21 is detected by a pressure sensor (not shown) provided on the connector 29. Thus, a signal indicating the detected value of the pressure is supplied to the PFC unit. Based on this signal, then the pressure of the fuel from the fueling unit 12 is controlled to maintain the pressure of the fuel supplied to the engine at a particular level. In the present embodiment, the direction of the fuel supply of the fuel discharged from the outlet 13 of the fuel pump unit 12 is the axial direction of the pump (see Fig.). Thus, near the valve population 14e of the check valve 5. At the f-curved portion (four), the direction of the fuel supply is changed to a direction perpendicular to the axial direction of the pump. Then, the flow direction is changed from one axial direction of the fuel pump unit 12 to a vertical direction. The fuel flows along the check valve 5. Thus, due to the pressure of the fuel, the valve 5a of the check valve 5 is pushed upward and disengaged from the valve seat & and pushed upward until the flat portion of the head portion 5b 5h at the brake_stop. 97437.doc -18- 1297373 Then, the fuel entering from the inlet 14c flows away through the gap between the head portion % and the valve seat 5c, and flows along the space and the passage And then supply the valve outlet 56. The fuel discharged from the helium outlet 5e moves along the fuel pipe and enters the 5 hp fuel filter 20. The fuel flowing through the fuel filter 2 passes through the ejector (not Shown) is supplied to the combustion chamber of the engine. When the fuel pump unit 12 is stopped according to the stop of the engine, the fuel pump module 不再 is no longer transported from the fuel tank 2 by the fuel pump module 。. Here, the main line (not shown) is The fuel pressure is higher than the fuel pressure in the fuel pump module 1. Due to the difference in pressure between the main line and the fuel pump module, the valve 5a of the check valve 5 is at a flat portion 5h thereof. It is subjected to a force directed upward (downward in Fig. i) and moved downward. Thus, since the head 讣 of the check valve 5 is coupled with the valve seat 5c, the head 5b and the valve seat 5C In this case, since the head portion 5b of the check valve 5 is in contact with the valve seat ,, the state of the check valve 5 is changed from the "open state" to the "closed state". Thus, it is prevented The reverse flow of the fuel and the decrease in fuel pressure occur. Thus, the pressure of the fuel in the main line can be maintained at the same level as the pressure delivered from the fuel pump unit 12, wherein the main line connects the main line connection unit 27 Connected to the engine. In this case, The check valve 5 is assembled perpendicular to the axial direction X of the fuel pump unit 12, so regardless of the state of the engine, the direction of movement of the valve is vertical. That is, during the stop of the engine The valve 5a in Fig. 1 is moved downward due to the back pressure, and the valve 5a in Fig. 1 is moved upward due to the positive pressure when the engine is in the state of active 97437.doc-19-1297373. Since the valve 5a In addition to the pressure (i.e., back pressure or positive pressure), the self-weight is received, so that the valve 5a can be smoothly moved up and down. In addition, in the present embodiment, since the valve seat 5c is formed into a spherical or hemispherical shape Therefore, the valve 5a and the valve seat 5c can be in smooth contact with each other. Since the valve 5a is urged in the direction of the valve seat 5c by its own weight, the coupling (interlocking) between the valve 5a and the valve seat 5c can be maintained after the engine is stopped. Therefore, since the interlock between the valve 5a and the valve seat 5c is improved, the leakage of fuel between the valve 5a and the valve seat 5c can be reduced. Further, in the present embodiment, the occurrence of a bending moment applied to the valve 5 & and disturbing the movement of the upper and lower directions of the valve 5 a can be restricted. Therefore, since the stroke of the valve 5a can be expanded by extending the length of the shaft portion 5g, the degree of freedom in designing the maximum fuel flow in the check valve 5 can be improved. As described above, in the fuel pump module 1 equipped with the laterally mounted pump, since the check valve 5 (fuel pressure maintaining valve) is vertically installed, the fuel pressure in the line can be maintained in the vertical mounting fuel pump The same level of pressure on the occasion. Thereby, leakage of fuel can be prevented. Thereby, the smooth starting of the engine can be improved. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an explanatory view of a fuel pump module equipped with a fuel pump container, a portion of which is shown by a cross-sectional view and a cross-sectional view. Figure 2 is an explanatory view of the fuel pump module equipped with a fuel pump container, a portion of which is shown by a cross-sectional view. 97437.doc -20- 1297373 Fig. 3 is an explanatory view showing the construction of a fuel pressure maintaining valve of the chestnut casing, a part of which is shown by a sectional view. 4 is an explanatory view of a conventional fuel pump device that is generally mounted vertically. [Main component symbol description] 1 Fuel pump module 2 Fuel tank 3 Fuel pump housing part 5 Check width 5a Valve 5b Head part 5c Seat 5d Channel 5e Valve outlet 5f Brake 5g Shaft part 5h Plane part 10 Pump housing 11 body 12 Fuel pump unit 13 outlet 14 fruit connection portion 14a a connection opening 14b curved portion 14c a valve inlet 97437.doc -21 - 1297373 14d valve seat portion 14e valve housing 14f partition 14g inlet passage 16 fuel line 18 buoy 19 support 19a Spring receiving hole 20 Fuel filter 21 Filter element 22 Housing 23 Flange 24 Support leg 24a Spiral compression spring 25 Filter connector 27 Main line connection unit 29 Connector 30 Suction filter, fuel 31 Fuel transmitter 40 Fuel 糸System 41 Fuel pump 42 Pump impeller 43 Out α 44 Check valve 97437.doc -22- 1297373 45 Valve 46 Pressure holding valve 47 Seat 48 Force actuator 49 Valve housing 97437.doc - 23 -