200406533 玫、發明說明： 【發明所屬之技術領域】 本發明與一種於引擎之曲4 柄車由箱設置通氣室之機束 擎之漏氣還原裝置有關。 至义钱車用引 【先前技術】 先前機車用漏氣還原裝置， w 、 大夕伙洩漏氣體分離混入为 漏氣體中之霧狀油用通氣室設 王叹万w飞缸盍者。如此在汽缸苫 設置通氣室乃因通氣室係鄰接於動間凸輪室及穿 ： 用空間（從曲柄轴箱内向汽虹蓋側延伸之空間㈣成㈣ 導入動閥凸輪室内之崎體與曲柄抽箱内之茂漏氣體; 方之故。 —為了消除此種缺失’例如日本特開纖_65326號公報所揭 示’考慮於曲柄軸箱附近設置通氣室。 汶么報所7F引擎係於曲柄軸箱之一侧部設置三角皮帶式 無段變速機，於沿三角皮帶式無段變速機延伸之曲柄ϋ 外侧壁，與相對於該外侧壁之上述三角皮帶式無段變速機 内侧壁間，形成通氣室。 惟速克達型機車用引擎，因曲柄抽箱與三角皮帶式無段 變速機之傳動箱形成為一體，如上述彼此相對之二侧壁並 2設置，故為了於曲柄軸箱附近設置通氣室，需在曲柄軸 相或上逑傳動箱安裝通氣室形成用蓋，引擎之曲柄軸箱部 分之外形將增加上逑蓋之尺寸。 本發明為消除上述問題，纟目的在於邊可達成曲柄軸箱 之小型化’邊可在曲柄軸箱附近設置通氣室者。 85866 200406533 【發明内容】 解決聋題之方法 為達成此目的，本發明有關之機車用引擎之漏 狀 置，其係於裝在曲柄軸箱側部之蓋外側壁上端部，襞配： 轉式補助機’使其軸線方向與車寬方向平行，將補助：: 轉軸旋轉自如支持於設在上述蓋内側之輪殼，在： 周圍形成通氣室。 上述輪殼為了減輕上述蓋之重量形成為必要最小限 大J万、亡述盍〈女裝旋轉式補助機部位内側’包園上、f 輪殼形成死角空間。因利用此死角空間形成通氣室，故: 具有專做為通氣室功能之空間設置於上述蓋内輕 ，可形成小型之蓋。 / % & #:Γ ϋ耗圍弟2項發明有關之機車用引擎之漏氣還原 ;、=置:r範園第1項發明有關之機車用引擎之漏 軋述原农置，其中安裝旋轉式補助 機之構造，且在飛輪磁電機之輪磁電 、ϋ # *办丄t 万向外侧設置上述補助機 ，k乱至係由與飛輪磁電機外周面相 内側延伸之補強壁，盘連接、“卜侧』向車體 向車寬方白正一、：_強壁之車體内側端部， 勹皁見万向正又炙万向延伸之蓋 hit, V ^ 件與盍内空間隔開。 為了在上述氚輪磁電機徑方向 而提A茗夕_祕不 q文衣旋轉式補助機， ， 與飛輪磁電機外周面相對之部位裝 5又補鈿壁。依本發明因利用上 需於蓋暨設專為形成通氣室之壁起壁形成通氣室，故無 【實施方式】 85866 200406533 乂下，依圖1至圖6詳細說明本發明有關之機車用引擎 漏氣還原裝置之—實施形態。 圖1係裝配本發明有關之漏氣還原裝置之機車用引擎側 面圖’圖2係同拆卸曲柄軸箱蓋狀態之側面圖，圖3係圖2之 :柄軸相及曲柄軸箱蓋之ΙΠ_Ιπ線剖面圖，圖4係曲柄軸箱 盖〈側面圖’同圖係從蓋内側觀看之狀態描输者。圖5係將 箱蓋上部從蓋内侧觀看狀態之立體圖，圖㈣將蓋構 件衣I曲柄軸箱蓋上部狀態之立體圖。 =圖中以符號i所示者係裝配依本實施形態之漏氣還 :衣置：機車用引擎。引擎1係裝於速克達2之單體擺動式 者’將汽紅4向車胥#前女办山a士 .^ , 〇車虹則万大出裝於曲柄軸箱3,並設有後輪5 左方向車體後方延仲士彳查 # 冰^ I伸 < 傳動相6。上述後輪5係由上述傳動 相〃二曲柄轴箱3於後輪5右方向後方延伸之後臂7支持。 8又二擎二藉連接於上述曲柄軸箱3上端部之連接用輪殼 k要干（未圖7上下方向擺動自如支持於車體框架。此 夕’上述傳動箱6之後端部與後臂 體9連接於車體框架。分別猎緩衝單 /述汽缸4係如圖1及圖2所示，料缸蓋Η設有進氣凸輪 軸12與排氣凸輪軸13之的此型者，於上述汽 ί進氣裝置，並於汽mu下㈣接排氣管14。上述進= 氣凸輪軸12、13 # λ丛杰丄m 、 係猎凸輪軸用鏈16傳遞曲柄軸15(參考 之旋轉。 7 圖1中設於引擎1前方凌棼咕，， 付破1 7所TF者為燃料箱。又配置 85866 200406533 ，燃料箱17前方之符號18所示者為水箱。此外，於上述弓} 擎1上万設有儲物箱19。儲物箱19可存放2個安全帽（未圖示） 由厘墊開閉上部存取口。符號19a、19b係儲物箱Η之二處 安全帽收容部。又圖2中20係汽缸體，21係頂蓋。 、上逑曲柄軸箱3係如圖2及圖3所示，可分割為車體左侧半 422與車體右侧半部23，以軸承24旋轉自如支持上述曲柄 =15。曲柄軸15係於從曲柄軸箱3向車體左侧突出之左端部 :有一角皮帶式無段變速機（未圖示）之驅動輪，於從曲柄軸 箱向車右侧突出之右端部軸裝飛輪磁電機2 。 上述f角皮帶式無段變速機係與習知之速克達用單體擺 動式=擎所用者相同者，收容^ —體形成在車體左侧之曲 柄軸箱半# 22之上述傳動箱6，向後輪5侧傳遞曲柄轴丨5之 =轉、。上述飛輪磁電機25係收容於裝在車體右側之曲柄轴 相半祁23右邮邶之曲柄轴箱蓋26内部，將定子參考圖6) 固疋於曲柄軸箱蓋26。又上述曲柄軸箱3係如圖2所示，於 上端部設有起動馬達27與平衡器28，並於下部形成油底殼 29 〇 一 上述起動馬達27係於車體右側之曲柄軸箱半部23之車體 前侧上端部支持輸出側端部27a，藉起動馬達用傳動齒輪:〇 連接於曲柄軸15。傳動齒輪3〇係如圖2所示，包括：起動馬 達27之輸出;小齒輪27b;二段式齒輪32，具㈣合於小齒輪 27b<罘1齒輪31者；及曲柄軸15之大徑齒輪μ，其係嚙合 於二段式齒輪32之齒輪33者；等。 上述平衡器28係配置於曲柄軸箱3上端部車體後側，如圖 85866 200406533 、斤丁將平衡配重28a臨曲柄軸15之曲柄臂〗5a、15a彼此間 、狀心下以軸承28〇將配重軸28b兩端部旋轉自如支持於曲 柄軸粕上逑兩半部22、23。上述配重軸係於車體右 侧端部+曲柄軸室35内位置之部位連接平衡器驅動用傳動齒 輪3 6藉傳動齒輪3 6從曲柄軸1 5傳遞動力旋轉。 此外杰配重軸28b之貫穿車體右侧曲柄軸箱半部23突出 之軸场#，連接機油泵驅動用鏈3 7，並連接後述冷卻水泵 、'疋軸3 9。上述機油泵驅動用鏈3 7係如圖2所示，構成 向後下垂延伸，將配重軸28b之旋轉傳遞給曲柄軸箱3下部 之機油泵驅動用中間軸4〇。中間軸4〇係藉齒輪“、G連接 於機油泵41之輸入軸（未圖示）。即平衡器28之旋轉藉由上述 鏈37—中間軸4〇—齒輪42、43而成之傳動系統傳遞給機油 泵4 1由機油泵4 1工作將油底殼29内之機油供給曲柄軸i 5 及其他旋轉構件之被潤滑部分。 裝在曲柄軸箱3之車體右側半部23之曲柄軸箱蓋％係如 圖3所示，構成曲柄軸箱3内之油底殼29一側壁，將上述冷 卻水泵38裝於外側壁26a之上端部。曲柄軸箱蓋26内部係藉 形成於車體右側之曲柄軸箱半部23之連通孔44(參考圖連 通於曲柄軸室3 5内。 又曲柄軸箱蓋26係以軸承45旋轉自如支持上述曲柄軸i 5 之車體右側端部，並旋轉自如支持將起動馬達27之旋轉傳 遞…曲柄軸丨5用心上述二段式齒輪32之車體右侧軸端部。 以圖4中符號46表示安裝上述曲柄軸支持用之軸承45之輪 殼，以符號47表示軸支二段式齒輪32之輪殼。 85866 -10- 200406533 上述冷卻水泵38係如圖3所示，包括：上述旋轉軸39，其 係=接於上述配重軸28b向車寬方向延伸者；動葉輪48 ,其 $裝於旋轉軸39之軸端部者；及泵殼5〇，其係與曲柄軸箱 蓋26之外側壁26a協同形成泵室49者；等。上述旋轉軸39係 以軸承52旋轉自如支持於臨曲柄軸箱蓋％内方形成之輪殼 5 1 ’男♦曲柄軸箱蓋26之外側壁26a。 圖3中設於上述輪殼51内部上述軸承52外侧以符號μ表示 者為密封材料，俾阻止引擎冷卻水侵入曲柄軸箱蓋26内。 上述泵殼50係以對接於上述外側壁26a之安裝座26b之狀 態以固定用螺栓54固定。上述安裝座咖係形成於上述外側 壁26a之旋轉軸貫穿部分（輪殼51)之周圍。 "上述輪殼51係如圖3及圖4所示，與上述飛輪磁電機25之 &方向外側位置之補強壁61—體形成。補強壁61係可將冷 部水泵38牢固固定於曲柄軸箱蓋％ ’以提高曲柄軸箱蓋％ 门,U生 < 用者，如圖3所示，與飛輪磁電機^之外周面MR 才:對’從曲柄軸箱蓋26之外侧壁26a向車體内側豎設。又補 私i 61係如圖4所示’從軸支上述二段式齒輪^之輪殼〇至 曲柄軸箱蓋26後端部，以圓弧狀延伸飛輪磁電機25之徑方 向外側形成。於補強壁61與曲柄軸箱蓋％之上壁26c之間， =上述輪殼51與上述上壁26e之間，如圖$所示，設有第卜 第4補強用肋62〜65。 形成補強壁61與輪殼47、 圖3及圖5所示，形成向車 :支持冷卻水泵3 8之旋轉 如上述於曲柄軸箱蓋26上端部 5 1 ’於曲柄軸箱蓋26内上端部如 骨^内側開放之空間S。空間S包括 85866 -11 - 200406533 軸39之輪殼51周邊之空間；及支持上述二段式齒輪32之輪 殼47周邊之空間。詳言之，上述輪殼47、51為了減輕曲柄 軸箱蓋26之重量，形成為必要最小限度之大小，此等輪殼 4 7、5 1形成之範圍因比曲柄軸箱蓋2 6之外侧壁2 6 a之必要部 分狹窄，故如上述於輪殼47、51周圍形成空間s。上述必要 邯分係指於支持旋轉軸39之輪殼51，形成安裝上述泵殼5〇 之安裝座26b用之後侧上方伸出部66(參考圖4)，而於支持二 段式齒輪32之輪殼47，為相對於車體右侧之曲柄軸箱半部 23之起動馬達用安裝座67(參考圖2)之前侧上方伸出部 (參考圖4)。於本實施形態，本發明有關之旋轉式補助機包 括上述冷卻水泵3 8與起動馬達2 7。 上述空間S係以圖3、4及圖6中符號71所示蓋構件71關閉 車體内側之開放部分，由蓋構件71與上述補強壁61分隔曲 柄軸箱蓋26内之其他空間。如此由對曲柄軸箱蓋％内之空 間分隔之空間s構成本發明有關之通氣室72。又圖4係描繪 剖開蓋構件71之一部分以露出通氣室72内部之蓋構件^之 圖。 上述蓋構件7 1係形成從曲柄軸箱蓋2 6之上壁2 6 c與後壁 26d(圖4中右側端部之壁）向1内紹中出，〃連接於上述補= :?〈車體内側端部狀態，$固定用螺栓73固定於曲柄軸 相盍26。又於盍構件71之與上述旋轉軸59對應之部分係如 圖3所示，一體形成圓筒71a，藉密封構件”將配重軸28b言 穿圓筒71a。 蓋構件71之補強壁61下端之下方位置之下部m係與曲 85866 -12- 200406533 柄軸箱蓋26之後壁26d及外側壁％ U稱成王剖面四角形 狀之機油通路75，形成剖面L字狀。 ^ ，由遇路75係藉連通路 (參考圖4、5)將上端部連通於上述通氣室72。 上述通氣室7 2係藉蓋構件7丨乏鱼触义y ▼ 舟开/ ^車f豆則侧端部與第丨補強 用肋62間所形成之間隙而成之入 (參考圖6)連通於曲柄 軸箱蓋26内之空間’並如圖5所示，藉設於曲柄轴箱蓋％之 上壁26e之軟管接頭77與連接於軟管接頭77之軟管（未圖示） 連通於進氣通路。 又通氣室72内位置之第2補強用肋63係如圖5所示，形成 於低處俾與蓋構件7丨間形成間隙，第3、4補強用肋Μ;。 係形成抵接蓋構件71之連接面78,與低於連接面78之通氣 部79及通油部8〇。上述通氣部79係為了线氣體能流經補 強用肋間者，而上述通油部80係為了通氣室72内之補強用 肋62〜65及其他壁部分所附著垂下之機油能流下之用者。 依具有如上述構成之通氣室72之漏氣還原裝置，由於將 進氣裝置之吸氣負壓導入通氣室72，使曲柄軸箱蓋％内之 洩漏氣體從第1補強用肋62與蓋構件71間之入口 76流入通 氣室72内。該洩漏氣體通過通氣室72内之第2〜第4補強用肋 6 3〜6 5與蓋構件7 1間所形成之間隙，流經通氣室7 2内，通過 被吸進軟管接頭77内之未圖示軟管，被導至進氣通路。戍 漏氣體通過通氣室72内時，因碰及第2〜第4補強用肋62〜65 ’及通氣室7 2之内壁面，故於此等表面附著霧狀機油。該 機油邊通過形成於通氣室72底之通油部80，邊沿補強壁6 j 向下流>。而該機油通過形成於蓋構件7 1下端部與曲柄軸箱 85866 -13- 200406533 盍26間之機油通路75回至油底殼29内。 依本實施形態之通氣室72,因利用於曲柄軸箱蓋26内側 形成包圍輪殼47、51之空間S，即死角空間形成，故與將具 有專做為通氣室功能空間設於曲柄軸箱蓋％内之情形比較 ’可形成小型之曲柄軸箱蓋26。 、又因利用為了將冷卻水泵38裝於曲柄軸箱蓋26所需補強 壁61形成通氣室72，故Air 士人& _ ”，、而万；曲柄軸箱蓋26豎設專為形成 通氣室之壁。因此，由於可舍旦· 、 田、了皱里減少設於曲柄軸箱蓋26之 壁數’故容易製造曲柄軸箱蓋2 6。 發明之效旲 如以上說明依本發明’由於於裝有旋轉式補助機之 側，形成包圍旋轉軸支持用之輪如 錢^ 輪设（夕匕角$間，而利用此 …間形成通氣室，故與將具有專做為通 設於上述蓋内之情形比較，可形成小型之蓋。 工間 Q此丨&達成引擎〈曲柄轴箱部分之小型化 柄軸箱附近設置通氣室。 力曲 依申凊專利範圍第2項之於日日 ，、么明，因利用將旋轉式補助撫费 A飛輪磁電機用蓋所需< _ A 、l , 補強壁形成通氣室，故無需认# 羞設專為形成通氣室用之辟 a ;盖 造成本。 * ϋ造容易’而可減低製 【圖式簡單說明】 圖1係裝配本發明有關乏、、昆 面圖。 有關〈漏氧還原裝置之機車用”側 圖2係拆卸曲柄軸箱蓋之?丨擎侧面圖。 85866 -14- 200406533 固3係圖2之曲柄軸箱及曲拘 罔4必此』士 卿？由相盍又HMII線剖面圖 圖係曲柄軸箱蓋之側面圖。 圖5係將曲柄車由箱蓋上鄯 K F处盍内側觀看狀態之立體圖 圖6係將盍構件裝於曲柄 同a， 两釉相盍上邵狀態之立體圖。 圖式代表符號說明】 1 引擎 3 曲柄軸箱 23 車體右侧之曲 22 車體左側之曲 26 曲柄軸箱蓋 26a 外侧壁 38 冷卻水泵 27 起動馬達 39 旋轉車由 47, 51 輪殼 72 通氣室 25 飛輪磁電機 61 補強壁 71 蓋構件 85866 -15 -200406533 Description of the invention: [Technical field to which the invention belongs] The present invention relates to an air leakage reduction device for an engine which is provided with a ventilation chamber by a box in a crank 4 handle car of an engine. [Previous technology] For previous locomotive air leakage reduction devices, the leakage gas of w and Daxiu was separated and mixed into a mist-like oil vent chamber for the leakage gas. In this way, the ventilation chamber is provided in the cylinder 因 because the ventilation chamber is adjacent to the movable cam chamber and wears: the space (the space extending from the crankshaft box to the steam hood side) is introduced into the ram body and crank pump in the cam chamber of the moving valve. Leakage gas in the box; Fang reason.-To eliminate such a defect 'for example, disclosed in Japanese Patent Application Publication No. 65326', it is considered to set a vent chamber near the crankshaft box. The 7F engine of the Wenmo Institute is attached to the crankshaft. One side of the box is provided with a V-belt stepless speed changer, formed between the outer wall of the crank ϋ extending along the V-belt stepless speed changer and the inner wall of the V-belt stepless speed changer opposite to the outer wall. Ventilation chamber. However, because of the crankcase and the transmission box of the V-belt-type stepless speed changer, the crankcase of the locomotive engine is integrated into one. To provide a ventilating chamber, it is necessary to install a venting chamber forming cover on the crank shaft phase or the upper gearbox. The outer shape of the crankshaft box part of the engine will increase the size of the upper gearhead cover. In order to achieve the miniaturization of the crankshaft box, a ventilating chamber can be installed near the crankshaft box. 85866 200406533 [Summary of the invention] To solve the deafness problem To achieve this purpose, the leaky arrangement of the locomotive engine related to the present invention It is attached to the upper end of the outer side wall of the cover mounted on the side of the crankshaft box. It is equipped with: Rotary auxiliary machine 'so that its axis direction is parallel to the vehicle width direction. The auxiliary :: Rotary shaft can be freely supported inside the cover. The wheel housing is formed around: A ventilation chamber is formed around the above. In order to reduce the weight of the cover, the above-mentioned wheel housing must be formed with a minimum size of 10,000 yen. The upper casing is formed on the inside of the "women's rotary auxiliary machine part," and the wheel housing is formed. Dead space. Because the dead space is used to form the ventilating chamber, the space with the function as a venting chamber is installed in the above cover, which is light and can form a small cover. /% &Amp;#: Γ ϋ 消 围 弟 2 inventions Leakage reduction of related locomotive engines; 置: set the original agricultural property of the locomotive engine related to the first invention of Fanfan, in which the structure of the rotary auxiliary machine is installed, and the wheel of the flywheel magnetomotor Magnetoelectric ϋ # * 办 丄 t The above-mentioned auxiliary machine is installed on the outside of the gimbal, and it is chaotically connected to the reinforcing wall extending from the inside of the outer peripheral surface of the flywheel magnetic motor. _The inner end of the strong wall of the car body is covered with a universally extending cover that hits the V, and the ^ pieces are separated from the inner space of the cymbal. In order to provide the above-mentioned stern-wheel magnetomotors, A 茗 eve_ Secret Q-clothing rotary auxiliary machine is equipped with 5 parts to fill the wall opposite to the outer peripheral surface of the flywheel magnetic motor. According to the present invention, a venting chamber is formed on the cover and wall for forming the venting chamber. Therefore, there is no [Embodiment] 85866 200406533, according to Figs. 1 to 6, a detailed description of the embodiment of the present invention of a locomotive engine leak reduction device-embodiment. Figure 1 is a locomotive equipped with the leak reduction device of the present invention Engine side view 'Figure 2 is a side view of the same state as the crankshaft box cover is disassembled, Figure 3 is a sectional view of the crankshaft phase and the crankshaft box cover taken along line ΙΠ_Ιπ, and Figure 4 is a crankshaft box cover <side view 'The same picture is a state depicting the state viewed from the inside of the cover. Fig. 5 is a perspective view of the upper part of the box cover when viewed from the inside of the cover, and Fig. 5 is a perspective view of the upper part of the box cover when the cover member I is cranked. = The one indicated by the symbol i in the figure is the leakage of the assembly according to this embodiment: clothes: engine for locomotive. Engine 1 is a single-swing type mounted on the speed gram 2 'Qihong 4 Xiang Che ## Former woman to do a mountain. ^, 〇 Che Hong Ze Wanda out of the crankshaft box 3, and is equipped with Rear wheel 5 The car body extends to the left in the left direction. The above-mentioned rear wheel 5 is supported by the above-mentioned transmission phase two crankshaft box 3 which extends rearward in the right direction of the rear wheel 5 and a rear arm 7. 8 and 2 The second wheel 2 is connected to the upper end of the crankshaft box 3 by using the connecting wheel shell k (not shown in Fig. 7 swings up and down to support the body frame freely. At this moment, the rear end of the above transmission box 6 and the rear arm The body 9 is connected to the frame of the vehicle body. The cylinder buffer 4 is shown in Figs. 1 and 2 respectively. The cylinder head is provided with an intake camshaft 12 and an exhaust camshaft 13. The above-mentioned air intake device is connected to the exhaust pipe 14 under the air pump. The above intake = air camshaft 12, 13 # λ 丛 杰 丄 m, the camshaft uses a chain 16 to transmit the crankshaft 15 (refer to the rotation 7 Figure 1 is set in front of the engine 1 Ling Mugu, and if the TF is broken, 17 of the TFs are fuel tanks. 85866 200406533 is also configured. The symbol 18 in front of the fuel tank 17 is the water tank. In addition, in the above bow} The storage box 19 is equipped with a storage box 19. The storage box 19 can store 2 safety helmets (not shown). The upper access opening is opened and closed by a centimeter pad. The symbols 19a and 19b are two safety helmets. In Figure 2, the 20 series cylinder block and the 21 series top cover. The upper crankshaft box 3 series are shown in Figure 2 and Figure 3, which can be divided into the left half of the car body 422 and the right of the car body. The half 23 is supported by the bearing 24 to freely rotate the crank = 15. The crank shaft 15 is connected to the left end protruding from the crank shaft box 3 to the left side of the vehicle body: the drive of an angular belt-type stepless speed changer (not shown) The flywheel magnetic motor 2 is mounted on the right end of the wheel protruding from the crank shaft box to the right side of the vehicle. The f-angle belt-type stepless speed changer is the same as the one used in the conventional speed kerota single swing type = engine, Containing ^ —The above-mentioned transmission case 6 of the crankshaft box half # 22 formed on the left side of the car body transmits the crankshaft 5 to the rear wheel 5 = turn. The above-mentioned flywheel magnetic motor 25 is housed on the right side of the car body The crank shaft is half-closed to the inside of the crank case cover 26 of the right post, and the stator is fixed to the crank case cover 26. The crank case 3 is shown in FIG. 2 and is provided at the upper end. There are a starter motor 27 and a balancer 28, and an oil pan 29 is formed in the lower part. The above-mentioned starter motor 27 is connected to the crankshaft half 23 on the right side of the vehicle body. The upper end of the front side of the vehicle body supports the output side end portion 27a. Transmission gear for starter motor: 〇 Connected to crankshaft 15. Transmission gear 30 is shown in Figure 2, including Including: the output of the starter motor 27; pinion 27b; two-stage gear 32, which is coupled to the pinion 27b < 罘 1 gear 31; and the large-diameter gear μ of the crank shaft 15, which is meshed with the two-stage gear 32 of the gears 33; etc. The above-mentioned balancer 28 is arranged on the rear side of the upper end of the crankshaft box 3, as shown in Figure 85866 200406533. The balance weight 28a is placed next to the crank arm of the crankshaft 15. 5a, 15a each other Under the center of the center, the two ends of the counterweight shaft 28b can be freely supported by the crank shaft meal with bearings 28. The two halves 22, 23. The above counterweight shaft is attached to the right end of the vehicle body + the crankshaft chamber 35. The position of the inner position is connected to the balancer drive transmission gear 3 6 and the power is transmitted from the crank shaft 15 by the transmission gear 3 6 to rotate. In addition, the shaft field # protruding through the crank shaft box half 23 on the right side of the car weight shaft 28b is connected to the oil pump drive chain 37, and the cooling water pump and the 疋 axle 39 are described later. The above-mentioned oil pump driving chain 37 is shown in FIG. 2 and is configured to extend backward and downward, and transmit the rotation of the weight shaft 28b to the oil pump driving intermediate shaft 40 at the lower portion of the crank case 3. The intermediate shaft 40 is connected to an input shaft (not shown) of the oil pump 41 by a gear “G”, that is, a transmission system in which the balancer 28 rotates through the above-mentioned chain 37—the intermediate shaft 40—the gears 42 and 43. Passed to the oil pump 41. The oil pump 41 works to supply the oil in the oil pan 29 to the lubricated part of the crank shaft i 5 and other rotating components. The crank shaft is mounted on the right half 23 of the vehicle body in the crank case 3. As shown in Fig. 3, the box cover is a side wall of the oil pan 29 in the crankshaft box 3, and the cooling water pump 38 is mounted on the upper end of the outer side wall 26a. The crankshaft box cover 26 is formed inside the car body The communication hole 44 of the right crankshaft box half 23 (refer to the figure communicates with the crankshaft chamber 35). The crankshaft box cover 26 is rotatably supported by the bearing 45 with the bearing 45 on the right end of the vehicle body, and Rotate freely to support the transmission of the rotation of the starter motor 27 ... the crankshaft 丨 5 carefully the end of the right-hand shaft of the two-stage gear 32. The symbol 46 in FIG. 4 indicates the wheel housing on which the bearing 45 for the crankshaft support is mounted. The symbol 47 indicates the wheel housing of the shaft-supported two-stage gear 32. 85866 -10- 200406533 The cooling water pump 38 is shown in FIG. 3 and includes: the rotating shaft 39, which is connected to the weight shaft 28b and extending in the vehicle width direction; a moving impeller 48, which is mounted on the shaft end of the rotating shaft 39 And the pump casing 50, which cooperates with the outer side wall 26a of the crankshaft box cover 26 to form a pump chamber 49; etc. The above-mentioned rotation shaft 39 is formed by bearing 52 to be freely supported on the inner side of the crankshaft box cover. Wheel housing 5 1 'M ♦ Outer side wall 26a of the crankshaft box cover 26. In FIG. 3, the outside of the above-mentioned bearing 52 inside the wheel housing 51 is indicated by the symbol μ as a sealing material to prevent engine cooling water from entering the crankshaft box. Inside the cover 26. The pump casing 50 is fixed with a fixing bolt 54 in a state of being abutted to the mounting seat 26b of the outer side wall 26a. The mounting seat is formed in a rotating shaft penetrating portion (wheel housing 51) of the outer side wall 26a. &Quot; The above-mentioned wheel housing 51 is shown in Figs. 3 and 4, and is formed integrally with the reinforcing wall 61 at the outer position in the & direction of the above-mentioned flywheel magnetomotor 25. The reinforcing wall 61 can secure the cold part water pump 38. Fixed to the crankshaft box cover% 'to raise the crankshaft box cover% door, U Health & lt The user, as shown in Figure 3, and the outer peripheral MR of the flywheel magneto ^: erected from the outer side wall 26a of the crankcase cover 26 to the inside of the car body. Shown from the wheel housing of the above-mentioned two-stage gear ^ to the rear end of the crankshaft box cover 26, the outer side of the radial direction of the flywheel magnetic motor 25 is formed in an arc shape. It is formed on the reinforcing wall 61 and the crankshaft box cover% Between the upper walls 26c, = between the wheel housing 51 and the upper wall 26e, as shown in FIG. 4, fourth reinforcement ribs 62 to 65 are provided. The reinforcement wall 61 and the wheel housing 47 are formed, and FIG. As shown in FIG. 5, the vehicle is formed to support the rotation of the cooling water pump 38 as described above at the upper end portion 5 1 ′ of the crank case cover 26 at the upper end portion of the crank case cover 26 such as a space S that is open inside the bone. Space S includes 85866 -11-200406533 space around the wheel housing 51 of the shaft 39; and space around the wheel housing 47 which supports the two-stage gear 32 described above. Specifically, in order to reduce the weight of the crank case cover 26, the above-mentioned wheel cases 47 and 51 are formed to a minimum necessary size. The range of the formation of these wheel cases 4 7, 51 is larger than the outer side of the crank case cover 26. The necessary portion of the wall 26a is narrow, so the space s is formed around the wheel shells 47, 51 as described above. The above-mentioned necessary points refer to the wheel housing 51 supporting the rotating shaft 39, forming the rear side upper protruding portion 66 (refer to FIG. 4) for the mounting seat 26b for mounting the pump housing 50, and the support for the two-stage gear 32. The wheel housing 47 is a front-side overhanging part (refer to FIG. 4) of the starter motor mounting seat 67 (refer to FIG. 2) with respect to the crank case half 23 on the right side of the vehicle body. In this embodiment, the rotary auxiliary machine according to the present invention includes the above-mentioned cooling water pump 38 and the starter motor 27. The above-mentioned space S is an open portion on the inner side of the vehicle body which is closed by a cover member 71 shown by reference numeral 71 in Figs. 3, 4 and 6, and the cover member 71 and the above-mentioned reinforcing wall 61 separate other spaces in the crankcase cover 26. Thus, the space s divided by the space in the crankshaft box cover% constitutes the venting chamber 72 according to the present invention. Fig. 4 is a view illustrating a cover member ^ in which a part of the cover member 71 is cut away to expose the inside of the ventilation chamber 72. The cover member 7 1 is formed from the upper wall 2 6 c of the crank case cover 2 6 and the rear wall 26 d (the wall on the right end in FIG. 4) to the inside, and is connected to the above-mentioned supplement =:? < In the state of the inside end of the vehicle body, $ fixing bolts 73 are fixed to the crank shafts 26. The part of the cymbal member 71 corresponding to the rotation shaft 59 is shown in FIG. 3, and a cylinder 71a is integrally formed, and the weight shaft 28b is passed through the cylinder 71a by the sealing member. The lower end of the reinforcing wall 61 of the cover member 71 The lower part of the lower part is the curved wall 26d and the outer wall of the crank case cover 26, and the outer wall is 26% U, which is called the king-shaped quadrangular oil passage 75, forming an L-shaped section. ^, By Yulu 75 The upper end is connected to the aeration chamber 72 by a communication path (refer to Figs. 4 and 5). The aeration chamber 7 2 is a cover member 7 丨 fishless feel y ▼ 舟 开 / 车 f 豆, the side end and The opening formed by the gap between the reinforcing ribs 62 (refer to FIG. 6) communicates with the space inside the crankshaft box cover 26 ′ and is provided on the upper wall 26e of the crankshaft box cover as shown in FIG. 5. The hose joint 77 and a hose (not shown) connected to the hose joint 77 communicate with the intake passage. The second reinforcing rib 63 located in the air chamber 72 is formed at a low position as shown in FIG. 5.间隙 forms a gap between the cover member 7 and the third and fourth reinforcing ribs M; forming a connection surface 78 that abuts the cover member 71 and communicates with the connection surface 78 which is lower than the connection surface 78; The air portion 79 and the oil passage portion 80. The above-mentioned air passage portion 79 is used for the line gas to flow through the ribs for reinforcement, and the oil passage 80 is used for the ribs 62 to 65 for reinforcement in the air chamber 72 and other wall portions. Those who are attached to the engine oil can flow down. According to the air leakage reduction device with the ventilation chamber 72 configured as described above, the suction negative pressure of the air inlet device is introduced into the ventilation chamber 72, so that the leaked gas in the crankshaft box cover% From the inlet 76 between the first reinforcing rib 62 and the cover member 71, it flows into the ventilation chamber 72. The leaked gas passes through the second to fourth reinforcing ribs 6 3 to 65 in the ventilation chamber 72 and the cover member 71. The gap formed flows through the venting chamber 72 and is led to the intake passage through a hose (not shown) sucked into the hose joint 77. When the leaking gas passes through the venting chamber 72, it hits the second ~ The fourth reinforcing rib 62 ~ 65 'and the inner wall surface of the venting chamber 72, so misty motor oil is adhered to these surfaces. The oil edge passes through the oil passage portion 80 formed at the bottom of the venting chamber 72, and the edge reinforcing wall 6 j Downstream > The engine oil passes through the lower end of the cover member 71 and the crank case 85866 -13- 200406533 The oil passages 75 of 26 return to the oil pan 29. According to this embodiment, the ventilation chamber 72 is formed inside the crank case cover 26 to form a space S surrounding the wheel shells 47 and 51, that is, a dead space is formed. Comparing the case where the space dedicated to the ventilation chamber is set within the crankshaft box cover%, a small crankshaft box cover 26 can be formed. It is also necessary to reinforce the cooling water pump 38 to be mounted on the crankshaft box cover 26. The wall 61 forms a venting chamber 72, so the Air Scholar & _, and Wan; the crankshaft box cover 26 is erected to form the wall of the venting chamber. Therefore, since the number of walls provided in the crank case cover 26 can be reduced, the crank case cover 26 can be easily manufactured. Effect of the invention: As explained above, according to the present invention, 'a wheel is provided on the side equipped with a rotary auxiliary machine to support a rotating shaft, such as a money ^ wheel set (Evening angle $ room, and use this ... to form a ventilation chamber Therefore, compared with the case where it is designed to be installed in the above cover, a small-sized cover can be formed. Workshop Q this 丨 & to achieve the engine <crank shaft box part of the miniaturized crank box near the ventilation chamber. Force Qu Yishen's Patent Scope No. 2 is on the date, because of the need to use the rotary subsidy A flywheel magnet motor cover < _ A, l, reinforcing wall to form a ventilation chamber, so it is not necessary to recognize # The shame is designed to form the ventilating chamber. The cover is costly. * It is easy to fabricate, and the system can be reduced. [Simplified illustration of the drawing] Figure 1 is a diagram of the lack of oxygen and the surface of the assembly of the present invention. "Reduction device for locomotive" side view 2 is the side view of the engine with the crankshaft cover removed. 85866 -14- 200406533 Solid 3 series of the crankshaft box and the curve 4 shown in Figure 2 are necessary. Shi Qing? The sectional view of the HMII line is a side view of the crankshaft box cover. The perspective view of the inner state of the upper part of the upper KF. Fig. 6 is the perspective view of the upper part of the crank with the two components in the same a and two glazes. The description of the representative symbols] 1 Engine 3 Crankshaft box 23 Right side of the car body Curve 22 Curve on the left side of the vehicle body 26 Crankshaft box cover 26a Outer wall 38 Cooling water pump 27 Starter motor 39 Rotary car with 47, 51 Wheel housing 72 Ventilation chamber 25 Flywheel magneto 61 Reinforcement wall 71 Cover member 85866 -15-