200400315 玖、發明說明： 【發明所屬之技術領域】 本發明為關於二輪機車之漏氣（b 1 〇 w - b y )處理裝置，特別 是關於使連接排出引擎的漏氣之通氣管口和引擎的進氣通 路間之漏氣回流通路，供其分割為通氣管口側之上流側通 路，及，進氣通路之下流側通路，再通過機油分離箱接續 此等上流及下流側通路間，機油分離箱可使導入的漏氣所 分離的機油回至通氣管口側，同時.，再將機油分離後的漏 氣送至進氣通路側，如此的二輪機車之漏氣處理裝置之改 良。 【先前技術】 先前，在二輪機車之漏氣處理裝置中，例如於日本專利 特開平11 _ 2 4 7 6 4 3號公報所揭示者，各別構成有機油分離 箱，及，接續漏氣回流通路的下流側之通路的出口接頭， 在機油分離箱安裝出口接頭時，使出口接頭的内端藉一定 長度突入機油分離箱内，在機油分離箱内使自漏氣所分離 的機油不會往出口接頭流出，如此之裝置已為人們所知。 【發明内容】 (發明所欲解決之課題） 但是，先前之上述漏氣處理裝置，要適用在入口接頭及 出口接頭一體成形在機油分離器上時，在成形技術上極為 困難。 本發明為鑑於上述情況而所完成，其目的為提供即使入 口接頭及出口接頭一體成形在機油分離器上時，在機油分 5 312/發明說明書(補件)/92-07/92112218 200400315 離箱内可有效的防止自漏氣所分離的機油往出口接頭流出 的前述二輪機車之漏氣處理裝置。 (解決課題之手段） 為了達成上述目的，本發明使連接排出引擎的漏氣之通 氣管口和引擎的進氣通路間之漏氣回流通路，使其分割為 通氣管口側之上流側通路，及，進氣通路側之下流側通路， 再通過機油分離箱接續此等上流及下流側通路間，機油分 離箱使自導入的漏氣所分離的機油回至通氣管口側，同 時，再將機油分離後的漏氣送至進氣通路側，如此的二輪 機車之漏氣處理裝置中，在機油分離箱上，一體成形有接 續上流側通路之入口接頭及接續下流側通路之出口接頭， 在其出口接頭内，突入機油分離箱内，嵌裝有可防止對出 口接頭側機油流出之回油管。 又，前述進氣通路為對應於後述的本發明之實施例中的 連接管2 1，又前述上流側通路及下流側通路為各自對應於 通氣管41a及導管4 1b。 根據該第1特徵，藉在機油分離箱上一體成形有入口接 頭及出口接頭，即可削減零件數量及組合工作，可謀求成 本費之降低。而且，在出口接頭藉嵌裝有突入機油分離箱 内的回油管之簡單構造，在機油分離箱内可阻止自漏氣所 分離的機油自機油分離箱内壁往出口接頭流出，亦即可實 施機油回流。 又，本發明除了第1特徵外，在回油管上形成有抵接出 口接頭的外端之定位凸緣，如此為其第2特徵。 6 312/發明說明書(補件)/92-07/92112218 200400315 根據該第 2特徵，藉由使定位凸緣抵接出口接頭的外 端，可規範對回油管的機油分離箱之一定的突入長度，如 此可保證時常有安定之回油效果。 又，本發明除了第1或第2特徵外，在進氣通路的内壁 上，設有將自分離箱側所侵入進氣通路的機油誘導至接續 在進氣通路的上流側之空氣濾清器側的誘導壁上，如此為 其第3特徵。 根據該第3特徵，萬一，在機油分離箱内被分離的機油 通過出口接頭而侵入進氣通路内時，可藉誘導壁將機油誘 導至空氣濾清器側，且自空氣濾清器的放出孔流出至外 部，因此，可迴避上述機油吸入至引擎内。 【實施方式】 以下依照附圖表示的本發明之一實施例說明本發明之 實施形態。 圖1為具備有本發明的漏氣處理裝置之二輪機車的左側 視圖，圖2為在圖1中的漏氣處理裝置周邊部之擴大右側 視圖，圖3為_ 2之3 - 3線剖面圖，圖4為圖2之4 - 4線 剖面圖’圖5為圖4之要部擴大圖。 首先，在圖1中，二輪機車Μ的車架1為具備有：頭管 2 ;及，自該頭管2的上部後面向後方坡度平穩延伸而且在 中間部往下方屈曲之主管3 ;及，自頭部 2的下部後面往 後方坡度急遽延伸之下管4 ;及，自主管3的屈曲部前面 之左右兩侧部往後方延伸的左右一對之座執 5 ;及，連結 座轨5的中間部和主管3的下端部之間之左右一對的拉條 7 312/發明說明書(補件)/92-07/92112218 200400315 (stay)6。在頭管 2上，被軸支有可操縱方向的支持前輪 9f之前叉10，又，在主管3的後部，被軸支有可上下搖動 的支持後輪9 r之後叉1 1，在後叉1 1和前述座軌5之間安 裝有後緩衝器（rear cushion)12。 藉著主管3及下管4可自前後支持配置在其間之引擎E 的曲柄箱1 3。該引擎E的輸出為通過鏈條傳動裝置1 5傳 動至後輪9r。 在引擎E的上方，配置有搭載在主管3所支持之燃料箱 1 8，接續該燃料箱 1 8之後端的駕駛者用的前後二人座位 1 9被安裝於左右的座執5上。 在引擎 E的汽缸頭 14之進氣口開口的後面，安裝有在 其進氣口連接進氣道之氣化器20，在該氣化器20的進氣 道入π上，藉由連接管（connecting tube)21接續至空氣 濾清器2 2。該空氣濾清器2 2被配設在圍繞主管3、座軌5 及拉條6之三角形狀的空間。 在汽缸頭 14的排氣口開口的前面，接續有誘導自其排 氣口的排氣至排氣消音器2 4之排氣管2 3。 在圖2〜圖4中，空氣濾清器2 2為由濾清箱2 5及收容 在其内部的圓筒狀之濾清元件2 6所構成。又，濾清箱2 5 為由開放一側面之合成樹脂製的箱本體 2 5 a ;及，在該箱 本體2 5 a的開放端面夾著密封元件2 7被接合之同樣由合成 樹脂製之蓋體2 5 b所構成，在箱本體2 5 a的周壁上，安裝 有導入外氣至箱本體2 5 a内之空氣輸入管2 8。又，在蓋體 2 5 b的中心部開口之中央開口 3 0的周緣，被嵌入有形成在 8 312/發明說明書(補件)/92-07/92112218 200400315 連接管2 1的上流端部外周面之環狀溝3 1，又，在濾清 箱2 5内之被形成於連接管2 1的上流端部内周面之環狀 3 2上，被嵌入有形成在保持前述濾清元件2 6的圓筒狀 元件架33(element holder)之一端部之安裝凸緣33a， 形成於元件架3 3的另一端部之端板3 3 b的中心凹部3 4 合有形成於箱本體2 5 a的端壁之支持部3 5，如此元件架 被支持於濾清箱2 5上。在元件架3 3的周壁穿設有連通 清元件2 6的各部之多數個通氣孔3 6，3 6…，又，在臨 連接管21的端面張設有車架閘（frame trap)37。 又，在濾清箱25下部中在箱本體25a及蓋體25b的 合面間，設有連通外部之放出孔3 8。 在引擎E的曲柄箱1 3之後部上面，開口有可排出在 内部所發生的漏氣之通氣管4 0 (參照圖1 )，在該通氣管 上，通過漏氣回流通路4 1接續開口在連接管2 1的上流 部内面之漏氣出口 4 2，機油分離箱4 3如下述般被介裝 漏氣回流通路41的途中。 漏氣回流通路41為由一端接續至前述通氣管口 40的 氣管41a;及，連接前述漏氣出口 42 —體被形成在連接 2 1的上流端部之導管4 1 b ;如此所構成。 另一方面，機油分離箱 4 3為合成樹脂製，使導入其 部的漏氣膨脹，其具有可充份分離所含有機油之容積， 其底部的前端上一體被形成有入口接頭4 5，又，在上部 側一體被形成有出口接頭4 6，在其出口接頭4 6，被壓入 以一定長度突入機油分離箱 4 3内之回油管4 7。該回油 312/發明說明書(補件)/92-07/92112218 器 溝 之 在 繫 33 滤 近 接 其 40 端 在 通 管 内 在 有 管 9 200400315 4 7為抵接出口接頭4 6之外端面，具有對回油管4 7的機油 分離箱4 3内的突入長度作規範之定位凸緣4 7 a。 又，入口接頭45接續通氣管41a的另一端，出口接頭 4 6則接續連接管2 1的導管4 1 b。在此時，形成在導管4 1 b 内壁的環狀肩部4 8會抵接回油管4 7的定位凸緣4 7 a，而 確實固定回油管47在定位上。 如圖3及圖4所示，在連接管21的内壁一體被形成有 自分離箱4 3側誘導侵入至連接管2 1的機油到空氣濾清器 2 2侧之肋狀的誘導部5 3。 如圖4及圖5所示，在機油分離箱4 3自出口接頭4 6離 開之外側面，一體形成具有安裝孔51之舌片5 0，在其安 裝孔5 1上彈性嵌入繫止一體突設在連接管2 1外側面之附 有膨大頭部5 2 a的繫止突起5 2， 由此可阻止機油分離箱 43的出口接頭46周圍的旋轉。 其次說明該實施例之作用。 在引擎E運轉中，自空氣輸入管2 8被輸入至濾清箱2 5 的空氣，在以濾清元件2 6過濾後，通過元件架3 3的通氣 孔 3 6，3 6…及車架閘3 7，再經過連接管 2 1至氣化器2 0 的進氣道，在該處一面混合喷出之燃料而被吸入引擎 E 内。假如在濾清箱 2 5内有雨水或洗車時的水侵入濾清箱 2 5内時，或在濾清箱2 5内壁發生結露時，這些水滴會自 然自放出孔 38流出外部。另一方面，在引擎E的曲柄箱 1 3内所發生之漏氣，自通氣管口 4 0經過通氣管4 1 a而流 入機油分離箱4 3内，藉由膨脹自該漏氣可使所含的機油分 10 312/發明說明書(補件)/92-07/92112218 200400315 離。200400315 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a gas leakage (b 1 0w-by) treatment device for a two-wheeled locomotive, and in particular, to a vent pipe opening and an engine for connecting a gas leak from an engine. The air leakage return path between the intake passages is divided into an upstream side passage on the side of the vent pipe, and a downstream side passage of the intake passage, and then the oil separation tank is connected to these upstream and downstream side passages. The separation box can return the oil separated by the introduced leak to the side of the vent pipe, and at the same time, send the leaked gas separated by the oil to the intake passage side. This is an improvement of the two-wheeled locomotive's leak treatment device. [Prior art] Previously, in the air leakage treatment device of a two-wheeled locomotive, as disclosed in, for example, Japanese Patent Laid-Open No. 11 _ 2 4 7 6 4 3, an organic oil separation tank was separately formed, and the air leakage was continuously returned. When the outlet joint of the downstream side of the flow path is installed in the oil separation tank, the inner end of the outlet joint is protruded into the oil separation tank by a certain length, so that the oil separated by the self-leakage will not be in the oil separation tank. To the outlet joint, such a device is known. [Summary of the Invention] (Problems to be Solved by the Invention) However, it has been extremely difficult in terms of forming technology to apply the above-mentioned blow-by gas treatment device to an oil inlet and outlet outlet integrally formed on an oil separator. The present invention has been made in view of the above circumstances, and an object thereof is to provide an oil separator 5 312 / Invention Specification (Supplement) / 92-07 / 92112218 200400315 even when the inlet joint and the outlet joint are integrally formed on the oil separator. The air leakage treatment device of the aforementioned two-wheeled locomotive can effectively prevent the oil separated from the air leakage from flowing out to the outlet joint. (Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention divides the air leakage return passage between the air leakage passage of the exhaust engine and the air intake passage of the engine, and divides it into the air passage side upstream flow side passage. And, the downstream side passage of the intake passage side is connected between these upstream and downstream side passages through an oil separation tank, and the oil separation tank returns the oil separated from the leaked gas introduced to the vent pipe side, and at the same time, The air leakage after the oil separation is sent to the intake passage side. In the air leakage treatment device of such a two-wheeled locomotive, the oil separation tank is integrally formed with an inlet joint connecting the upstream side passage and an outlet joint connecting the downstream side passage. In the outlet joint, it protrudes into the oil separation tank, and an oil return pipe is installed to prevent oil from flowing out to the outlet joint side. The intake passage corresponds to the connecting pipe 21 in the embodiment of the present invention described later, and the upstream-side passage and the downstream-side passage respectively correspond to the ventilation pipe 41a and the duct 41b. According to this first feature, by integrally forming the inlet joint and the outlet joint in the oil separation tank, the number of parts and the combined work can be reduced, and the cost can be reduced. In addition, the simple structure of the oil return pipe protruding into the oil separation tank is embedded in the outlet joint, and the oil separated by the leak can be prevented from flowing out from the inner wall of the oil separation tank to the outlet joint in the oil separation tank. Reflux. Furthermore, in addition to the first feature of the present invention, a positioning flange is formed on the oil return pipe to abut the outer end of the outlet joint, which is its second feature. 6 312 / Invention Specification (Supplement) / 92-07 / 92112218 200400315 According to this second feature, by making the positioning flange abut the outer end of the outlet joint, a certain protruding length of the oil separation tank of the return pipe can be regulated This will ensure a stable oil return effect from time to time. In addition to the first or second feature of the present invention, the inner wall of the intake passage is provided with an air filter that induces oil that penetrates the intake passage from the separation tank side to the upstream side of the intake passage. This is the third feature on the side of the induction wall. According to this third feature, if the separated oil in the oil separation tank penetrates the intake passage through the outlet joint, the oil can be induced to the air filter side by the induction wall, and The drain hole flows out to the outside, so the above-mentioned oil can be avoided from being sucked into the engine. [Embodiment] An embodiment of the present invention will be described below with reference to an embodiment of the present invention shown in the accompanying drawings. FIG. 1 is a left side view of a two-wheeled locomotive equipped with the air leakage treatment device of the present invention, FIG. 2 is an enlarged right side view of the periphery of the air leakage treatment device in FIG. 1, and FIG. 3 is a sectional view taken along line 3-3 of FIG. 2. Fig. 4 is a sectional view taken along the line 4-4 of Fig. 2; Fig. 5 is an enlarged view of a main part of Fig. 4. First, in FIG. 1, the frame 1 of the two-wheeled locomotive M is provided with: a head pipe 2; and a main pipe 3 that smoothly slopes backward from the upper rear surface of the head pipe 2 and flexes downward at the middle; and, The lower tube 4 extends sharply from the back of the lower part of the head 2 to the rear; and the left and right pair of seat holders 5 extending rearward from the front left and right sides of the buckling portion of the autonomous tube 3; and, connecting the seat rail 5 A pair of left and right pull bars between the middle portion and the lower end portion of the main pipe 3 7 312 / Invention Specification (Supplement) / 92-07 / 92112218 200400315 (stay) 6. On the head pipe 2, the axle is supported by a front axle 9f with a steerable support, and the front fork 10, and at the rear of the main pipe 3, is supported by the axle with a pivotable rear wheel 9r. A rear cushion 12 is installed between 11 and the seat rail 5. Through the main pipe 3 and the down pipe 4, the crank case 1 3 of the engine E disposed therebetween can be supported from front to back. The output of this engine E is transmitted to the rear wheels 9r through a chain transmission 15. Above the engine E, a fuel tank 18 supported by the supervisor 3 is disposed, and a front and rear two-seater 19 for the driver, which is connected to the rear end of the fuel tank 18, is mounted on the left and right seat holders 5. Behind the intake port opening of the cylinder head 14 of the engine E, a gasifier 20 is connected to the intake port of the intake port. The intake port of the gasifier 20 is connected to π through a connecting pipe. (Connecting tube) 21 is connected to the air cleaner 2 2. The air cleaner 22 is disposed in a triangle-shaped space surrounding the main pipe 3, the seat rail 5, and the stay 6. In front of the opening of the exhaust port of the cylinder head 14, an exhaust pipe 2 3 which induces exhaust from its exhaust port to an exhaust muffler 24 is connected. In Figs. 2 to 4, the air cleaner 22 is composed of a filter case 25 and a cylindrical filter element 26 accommodated in the filter case 25. The filter box 2 5 is a box body 2 5 a made of synthetic resin with one side open; and a sealing member 27 is also joined to the open end surface of the box body 2 5 a and is also made of synthetic resin. The cover body 2 5 b is formed, and an air inlet pipe 28 for introducing outside air into the box body 25 a is installed on a peripheral wall of the box body 25 a. Also, the peripheral edge of the central opening 30, which is open at the center portion of the lid body 2 5 b, is embedded in the outer periphery of the upstream end portion of the connecting pipe 21 formed in 8 312 / Invention Specification (Supplement) / 92-07 / 92112218 200400315 The annular groove 3 1 on the surface is embedded in the annular groove 3 2 formed on the inner peripheral surface of the upstream end of the connection pipe 21 in the filter box 25 and is formed to hold the filter element 2 6. The mounting flange 33a at one end of the cylindrical element holder 33 (element holder) is formed in the center recess 3 4 of the end plate 3 3 b at the other end of the element holder 3 3 and is formed in the box body 2 5 a The support part 35 of the end wall of the device is thus supported on the filter box 25. A plurality of vent holes 36, 36, ... that communicate with the parts of the clear element 26 are passed through the peripheral wall of the element frame 33, and a frame trap 37 is provided on the end surface of the connection pipe 21. Further, in the lower part of the filter box 25, a discharge hole 38 is provided between the joint surfaces of the box body 25a and the cover body 25b to communicate with the outside. On the upper part of the rear of the crank case 13 of the engine E, there is an air vent pipe 40 (refer to FIG. 1) which can discharge the air leak occurring inside, and the vent pipe is connected to the opening through the air leak return path 41. An oil leakage outlet 4 2 and an oil separation tank 43 are internally connected to the gas leakage return path 41 in the middle of the upstream portion of the connection pipe 21 as described below. The air leakage return path 41 is an air pipe 41a connected to the vent port 40 at one end; and the duct 4 1 b connected to the air leakage outlet 42 is formed at the upstream end of the connection 2 1; On the other hand, the oil separation tank 43 is made of synthetic resin, which expands the leaked air introduced into it. It has a volume that can fully separate the oil contained in it. The front end of the bottom is integrally formed with an inlet joint 4 5. An outlet joint 46 is integrally formed on the upper side, and an outlet joint 46 of the outlet joint 46 is pressed into an oil return pipe 47 projecting into the oil separation tank 43 with a certain length. The oil return 312 / invention specification (supply) / 92-07 / 92112218 is located in the system of the filter 33 close to its 40 end in the through pipe in the tube 9 200400315 4 7 is abutting the outlet connector 4 6 outside the end surface, has Position the flange 4 7 a as the standard for the protruding length of the oil separation tank 4 3 of the oil return pipe 4 7. The inlet joint 45 is connected to the other end of the ventilation pipe 41a, and the outlet joint 46 is connected to the catheter 4 1 b of the connection pipe 21. At this time, the annular shoulder portion 4 8 formed on the inner wall of the duct 4 1 b abuts the positioning flange 4 7 a of the return pipe 47, and the return pipe 47 is surely fixed in position. As shown in FIGS. 3 and 4, a rib-shaped induction portion 5 3 is formed integrally on the inner wall of the connection pipe 21 to induce intrusion of the oil from the 3rd side of the separation box 4 into the connection pipe 21 to the air cleaner 2 2 side. . As shown in FIGS. 4 and 5, a tongue piece 50 with a mounting hole 51 is integrally formed on the oil separation tank 43 from the outer side of the outlet joint 46, and the mounting hole 51 is elastically embedded to stop the integral protrusion. The retaining protrusion 5 2 provided with the enlarged head 5 2 a on the outer side surface of the connecting pipe 21 1 can prevent rotation around the outlet joint 46 of the oil separation tank 43. Next, the effect of this embodiment will be described. During the operation of the engine E, the air input from the air inlet pipe 2 8 to the filter tank 2 5 is filtered by the filter element 2 6 and then passes through the vent holes 3 6, 3 6 ... of the element frame 3 3 and the frame. The brakes 37 and 7 pass through the connecting pipe 21 to the air inlet of the gasifier 20, and the mixed fuel is sucked into the engine E there. If there is rain water in the filter box 25 or the water during car washing intrudes into the filter box 25, or when condensation occurs on the inner wall of the filter box 25, these water droplets will naturally flow out of the holes 38 and flow out. On the other hand, the air leakage that occurs in the crank case 13 of the engine E flows into the oil separation tank 4 3 from the air outlet 40 through the air outlet 4 1 a. Contained engine oil 10 312 / Invention Manual (Supplement) / 92-07 / 92112218 200400315.
然後，被分離的機油會再流下通氣管4 1 a而自通氣管口 4 0回到曲柄箱1 3内，機油被分離的漏氣經過回油管4 7及 導管41b，而自漏氣出口 42移至連接管21内，一方面和 通過該管 2 1内的吸入空氣混合，一方面被吸入至引擎 E 内再燃燒處理。 然而在上述機油分離箱4 3，由於一體成形有各自接續至 連接管21及導管41b之入口接頭45及出口接續46,因此， 其可削減零件數量及組合工作，而可謀求成本之降低。 而且，在出口接頭 46，由於被壓入突入機油分離箱 43 内的回油管4 7，因此，藉由對該回油管4 7的機油分離箱 4 3内之突入部分，在機油分離箱4 3内可阻止自漏氣所分 離的機油自機油分離箱4 3内壁往出口接頭4 6流出，亦即， 可實施機油回流。 又，在回油管47，由於形成有抵接出口接頭46的外端 之定位凸緣4 7 a，因此，可規範對回油管4 7的機油分離箱 43 之一定的突入長度，而可時常保證安定之機油回油效 果。 萬一，在機油分離箱 4 3内所分離的機油通過回油管4 7 而侵入連接管2 1内時，由於該機油會藉由連接管21内壁 的誘導壁5 3而被誘導至空氣濾清器2 2側，再通過濾清元 件2 6後，自濾清箱2 5下部的放出孔3 8自然的流出外部， 因此，可防止上述機油吸入至引擎内。 本發明並不限定於上述實施例，只要不脫離其要旨的範 11 312/發明說明書(補件)/92-07/92112218 200400315 圍内其可作各種設計變更。 (發明之效果） 根據以上本發明之第1特徵，可使連接排出引擎的漏氣 之通氣管口和引擎的進氣通路間之漏氣回流通路，使其分 割為通氣管口側之上流側通路，及，進氣通路側之下流側 通路，再通過機油分離箱接續此等上流及下流側通路間， 機油分離箱使自導入的漏氣所分離的機油回至通氣管口 側，同時，再將機油分離後的漏氣送至進氣通路側，如此 的二輪機車之漏氣處理裝置中，在機油分離箱上由於一體 成形有接續上流側通路的入口接頭及接續下流側通路的出 口接頭，在其出口接頭内，突入機油分離箱内，嵌裝有可 防止對出口接頭側機油流出之回油管，因此，藉由在機油 分離箱一體成形有入口接頭及出口接頭，即可削減零件數 量及組合工作，而可謀求成本費之降低，而且，在出口接 頭，藉由欲裝突入機油分離箱内的回油管之簡單構造，在 機油分離箱内可阻止自漏氣所分離的機油自機油分離箱内 壁往出口接頭流出，亦即，可實施機油回流。 又，根據本發明之第2特徵，除了第1特徵外，在回油 管上由於形成有抵接出口接頭的外端之定位凸緣，因此， 可規範對回油管的機油分離箱之一定的突入長度，而可時 常保證安定之回油效果。 又，根據本發明之第3特徵，除了第1或第2特徵外， 在進氣通路的内壁上，設有將自分離箱側所侵入進氣通路 的機油誘導至接續在進氣通路的上流側之空氣濾清器側的 12 312/發明說明書(補件)/92-07/92112218 200400315 誘導壁上，因此，萬一，在機油分離箱内所分離的機油通 過出口接頭而侵入進氣通路内時，其可藉由誘導壁將機油 誘導至空氣濾清器側，可自空氣濾清器的放出孔流出外 部，可迴避上述機油吸入至引擎内。 【圖式之簡單說明】 圖1為具備有本發明之漏氣處理裝置的二輪機車之左側 視圖。 圖 2 為在圖 1中漏氣處理裝置的周邊部之擴大右側視 圖。 圖3為圖2之3 - 3線剖面圖。 圖4為圖2之4-4線剖面圖。 圖5為圖4之要部擴大圖。 (元件符號說明） 1 車 架 2 頭 管 3 主 管 4 下 管 5 座 軌 6 拉 條 9f 前 輪 9r 後 輪 10 前 叉 11 後 叉 12 後 緩衝器 312/發明說明書(補件)/92-07/92112218 13 200400315 13 曲 柄 箱 14 汽 缸 頭 15 鏈 條 傳 動 裝置 18 燃 料 箱 19 座 位 20 氣 化 器 2 1 連 接 管 22 空 氣 濾 清 器 23 排 氣 管 24 排 氣 消 音 管 25 濾 清 器 2 5a 箱 本 體 25b 蓋 體 26 濾、 清 元 件 27 密 封 元 件 28 空 氣 m 入 管 30 中 央 開 口 3卜32 環 狀 溝 33 元 件 架 33a 安 裝 凸 緣 33b 端 板 34 中 心 凹 部 35 支 持 部 36 通 氣 孔 312/發明說明書(補件)/92-07/92112218Then, the separated oil will flow down the vent pipe 4 1 a and return from the vent pipe 40 to the crank case 13. The separated leak of the engine oil passes through the return pipe 47 and the duct 41 b, and the leaked gas outlet 42 It moves into the connection pipe 21 and mixes with the intake air passing through the pipe 21 on the one hand, and is sucked into the engine E and then burns. However, the oil separation tank 43 is integrally formed with an inlet joint 45 and an outlet joint 46 respectively connected to the connecting pipe 21 and the duct 41b. Therefore, it can reduce the number of parts and the combination work, and can reduce the cost. Furthermore, the outlet joint 46 is pressed into the oil return pipe 47 which protrudes into the oil separation tank 43. Therefore, the projected portion of the oil separation tank 43 of the oil return pipe 47 is inserted into the oil separation tank 4 3 The internal can prevent the oil separated by the leak from flowing out from the inner wall of the oil separation tank 4 3 to the outlet joint 46, that is, the oil can be refluxed. In addition, since the return flange 47 is formed with a positioning flange 47a that abuts the outer end of the outlet joint 46, a certain projecting length of the oil separation tank 43 of the return hose 47 can be regulated, and it can always be guaranteed Stable oil return effect. In case, when the oil separated in the oil separation tank 4 3 penetrates the connection pipe 21 through the oil return pipe 4 7, the oil will be induced to the air filter by the induction wall 5 3 of the inner wall of the connection pipe 21. After passing through the filter element 2 2 and the filter element 26, the drain hole 38 of the lower part of the filter tank 25 naturally flows out. Therefore, the above oil can be prevented from being sucked into the engine. The present invention is not limited to the above embodiments, as long as it does not deviate from the gist thereof 11 312 / Invention Specification (Supplement) / 92-07 / 92112218 200400315, various design changes can be made. (Effects of the Invention) According to the first feature of the present invention described above, it is possible to divide the air leakage return path connecting the air leakage vent port that discharges the engine and the air intake path of the engine, and divide it into the upstream side of the air vent port. Side passage, and the downstream side passage of the intake passage, and then connected between these upstream and downstream passages through the oil separation tank, the oil separation tank returns the oil separated from the introduced leak to the vent pipe side, and Then, the gas leakage after the oil separation is sent to the intake passage side. In such a gas leakage treatment device of a two-wheeled locomotive, the oil separation tank is integrally formed with an inlet joint that connects the upstream side passage and an outlet that connects the downstream side passage. The joint is inserted into the oil separation tank inside the outlet joint, and an oil return pipe is installed to prevent oil from flowing out of the outlet joint side. Therefore, by integrally forming the inlet joint and the outlet joint in the oil separation tank, parts can be reduced. The number and combination work can reduce the cost. Moreover, at the outlet joint, the simple structure of the oil return pipe protruding into the oil separation tank is used. The oil separation tank can prevent the oil separated by the leak from flowing out from the inner wall of the oil separation tank to the outlet joint, that is, the oil return can be implemented. In addition, according to the second feature of the present invention, in addition to the first feature, since a positioning flange is formed on the oil return pipe to abut the outer end of the outlet joint, it is possible to regulate a certain penetration of the oil separation tank of the oil return pipe. Length, and can always guarantee a stable oil return effect. According to the third feature of the present invention, in addition to the first or second feature, the inner wall of the intake passage is provided with an oil that penetrates the intake passage from the side of the separation box to induce the oil to continue upstream of the intake passage. Air filter side 12 312 / Invention specification (Supplement) / 92-07 / 92112218 200400315 on the induction wall, so in case, the oil separated in the oil separation tank penetrates the intake passage through the outlet joint When it is inside, it can induce the oil to the air filter side through the induction wall, can flow out from the air filter discharge hole, and can avoid the above-mentioned oil being sucked into the engine. [Brief description of the drawings] FIG. 1 is a left side view of a two-wheeled locomotive provided with the air leakage treatment device of the present invention. Fig. 2 is an enlarged right side view of a peripheral portion of the leak processing apparatus in Fig. 1. Fig. 3 is a sectional view taken along the line 3-3 in Fig. 2. Fig. 4 is a sectional view taken along the line 4-4 in Fig. 2; FIG. 5 is an enlarged view of a main part of FIG. 4. (Description of component symbols) 1 Frame 2 Head tube 3 Main tube 4 Lower tube 5 Seat rail 6 Pull bar 9f Front wheel 9r Rear wheel 10 Front fork 11 Rear fork 12 Rear bumper 312 / Invention specification (Supplement) / 92-07 / 92112218 13 200400315 13 Crank case 14 Cylinder head 15 Chain drive 18 Fuel tank 19 Seat 20 Vaporizer 2 1 Connection tube 22 Air filter 23 Exhaust pipe 24 Exhaust muffler 25 Filter 2 5a Box body 25b Cover Body 26 Filter and cleaning element 27 Sealing element 28 Air m Inlet 30 Central opening 3 Bu 32 Ring groove 33 Element frame 33a Mounting flange 33b End plate 34 Center recess 35 Supporting part 36 Ventilation hole 312 / Invention Manual (Supplement) / 92-07 / 92112218
14 200400315 37 車 架 閘 38 放 出 孔 40 通 氣 管 α 41 漏 氣 回 流 通路 41a 上 流 側 通 路 41b 下 流 側 通 路 42 漏 氣 出 口 43 機 油 分 離 箱 45 入 V 接 頭 46 出 口 接 頭 47 回 油 管 47a 凸 緣 48 肩 部 50 舌 片 51 安 裝 孔 52 繫 止 突 起 52a 膨 大 頭 部 53 誘 導 壁 E 引 擎 M 一一 輪 機 車 15 312/發明說明書(補件)/92-07/9211221814 200400315 37 Frame brake 38 Release hole 40 Vent pipe α 41 Leakage return path 41a Upstream side 41b Downstream side 42 Leakage outlet 43 Oil separation tank 45 Into V connector 46 Outlet connector 47 Oil return pipe 47a Flange 48 Shoulder Part 50 Tongue piece 51 Mounting hole 52 Tie-down protrusion 52a Swelling head 53 Induction wall E Engine M One-wheel locomotive 15 312 / Invention specification (Supplement) / 92-07 / 92112218