1244525 玖、發明說明： 【發明所屬之技術領域】 本發明係關於安裝排氣感測器於内燃機氣缸頭之安裝 構造。 【先前技術】 β 因為排氣感測器尺寸大，如曰本專利特公平3 - 3 0 7 0 2號 〜 公報所示，在安裝於氣缸頭之排氣岐管之離開氣缸頭的部 位設置排氣感測器。 但是，在安裝於二輪機車等的小型車輛的内燃機中，因 為内燃機關露出於外部，因此需要有配置大排氣感測器用 的寬闊空間，另外，還需要有保護構件，用以保護顯著向 外側突出的4非氣感測器。 (專利文獻1 ) 日本專利特公平3 - 3 0 7 0 2號公報 【發明内容】 (發明所欲解決之問題） · 本發明之目的在於，提供一種不需要配置排氣感測器用 的寬闊空間，另外，也不需要保護排氣感測器用的構件的 _ 排氣感測器安裝構造。 (解決問題之手段及效果） 本案之申請專利範圍第1項之發明，係於内燃機之頂部 將吸排氣閥S己置為V字開放狀，始自排氣閥的排氣管係形 成為從排氣閥軸線方向朝與氣缸軸線交叉的方向的吸氣閥 相反方向彎曲，在形成排氣系構件的安裝面於上述排氣管 5 312/發明說明書(補件)/93-07/93109726 1244525 之下游端的内燃機的汽缸頭 以相對上述氣缸轴線傾斜的 之上述安裝面周圍且位於該 申請專利範圍第1項之發 缸軸線傾斜的狀態，s己置為 於該排氣管外側，因此，可 間，另外，抑制排氣感測器 保護該排氣感測器之保護構 氣管配置排氣感測器的結果 性能。 另外，申請專利範圍第2 形成頭蓋接合面，同時，在 間形成凹部，同時，在該凹 此抑制排氣感測器從氣缸頭 頭小型化，同時，排氣感測 又，申請專利範圍第3項 軸線之氣缸頭端部係朝向較 氣感測器安裝面還配置於包 座及上述排氣系構件所形成 的排氣感測器，係安裝為對 於内燃機之排氣感測器，係 用螺絲座及氣缸頭頂部之頭 圍，藉由此等排氣系構件、 頂部之頭蓋接合面，而使得 上，其特徵為：排氣感測器係 狀態，S己置為位於上述排氣管 排氣管外侧。 明中，排氣感測器係以相對氣 位於排氣管之安裝面周圍且位 減低上述排氣感測器之設置空 從氣缸頭表面的突出，以減低 件的必要性，而且，鄰接於排 ，可提升該排氣感測器的檢測 項之發明中，在氣缸頭的頂部 該頭蓋接合面與上述排氣管之 部形成排氣感測器安裝面，因 表面的突出的結果，可將氣缸 器之保護變得更為容易。 之發明中，上述内燃機之氣缸 水平面略向上的方向，上述排 圍燃燒室且與氣缸結合用螺絲 的凹部内，面向上述排氣管内 該排氣管朝上的方向，因此設 由上述排氣系構件、氣缸結合 蓋接合面所形成的凹部所包 氣缸結合用螺絲座、及氣缸頭 上述排氣感測器受到進一步保 6 312/發明說明書(補件)/93-07/93109726 1244525 護，同時，可防範水對該排氣感測器的附著或滯留 該排氣感測器的耐久性。 另外，申請專利範圍第4項之發明中，將内燃基 動力傳動裝置本體及樞支驅動車的後車輪樞支本體 以構成動力單元，上述動力單元係設為相對車體可 動，抑制上述排氣感測器從氣缸頭表面的突出量， 即使氣缸頭周圍的搖動空間不廣，亦可確實搖動上 單元，可保持良好的騎乘性。 【實施方式】 以下，說明附圖所示之本案之内燃機之氣缸頭的 測器安裝構造之一實施形態。 在圖1所示小型二輪機車1中，在車體框架2前 形成有前管2 1，在前管21上可左右旋轉自如地嵌 叉3，在前叉3下端可旋轉自如地安裝有前輪4，在 架2後部可上下搖動自如地安裝有動力單元5 (本實 中，前後、上下、左右係以車輛為基準）。 該搖擺式動力單元5係由搖臂型頭上閥式4行程 氣筒的水冷式内燃機6、動力傳動裝置7及後輪支 一體而構成，後輪支持箱8具備後輪9。 另外，在車體框架2後部及動力單元5後部介裝 掛1 0，在車體框架2後方上部設有收納安全帽1 1 的物品收納箱1 2，並設有可開閉自如地覆蓋該物品 1 2之上部開口的座墊1 3，在車體框架2中央踏板： 方一體配設有燃料箱1 4，車體框架2係由車身罩1 312/發明說明書(補件)/93-07/93109726 ，提升 本體、 一體化 上下搖 因此， 述動力 排氣感 端一體 裝有前 車體框 施形態 循環單 持箱8 有後懸 等物品 收納箱 2 a白勺下 5所覆 7 1244525 蓋。 如圖8所示，車體框架2係由構成車體框架2前半部之 前框架2 0、構成車體框架2後半部之後框架2 5、及安裝於 後框架2 5之後端部的副框架2 9所構成，前框架2 0係由前 管2 1、從前管2 1向下方延長的下降框架2 2、從下降框架 2 2下部向左右方向分岐而向後方延長的左右一對踏板支 持框架2 3、及相互結合左右一對踏板支持框架2 3的後端 部的橫向構件2 4所構成，俯視為形成大致口字形框的一體 鑄造框架。 橫向構件2 4係從後面看彎曲為U字狀，燃料箱1 4的後 部直接或由未圖示的固定件等一體安裝在該橫向構件 2 4，燃料箱1 4的前部係藉由直接繫合於上下方向存在間隔 且橫架於左右方向上的複數肋條22a内最下端的肋條22a 或未圖示的固定件等安裝於下降框架2 2。 另外，後框架2 5係由左右一對的主框架部2 6、相互結 合左右一對的主框架部2 6的前後方向中間部2 6 e的前部橫 向構件2 7、及相互結合左右一對的主框架部2 6的後端部 的後部橫向構件2 8所構成，形成一體鑄造的框架。 左右一對的主框架部2 6係從略前下傾的前半部2 6 a的 後端向上延長，其上方的後半部26b再向後上方延長，全 體形成向後上方傾斜的形狀。 又，在前框架2 0之踏板支持框架2 3的後部2 3 a形成有 螺栓孔2 3 b及凹部2 3 c，同時，在後框架2 5之主框架部2 6 的前半部2 6 a形成有螺栓孔2 6 c及凸部2 6 d，將主框架部 8 312/發明說明書(補件)/93-07/93109726 1244525 2 6的前半部2 6 a的凸部2 6 d嵌合於踏板支持框架2 3的後 部2 3 a的凹部2 3 c後，將螺栓3 0***踏板支持框架2 3的 螺栓孔2 3 b及主框架部2 6的螺栓孔2 6 c後將螺母3 1螺合 拴緊於螺栓3 0上，使前框架2 0與後框架2 5組成為一體。 又，在後框架2 5之後部橫向構件2 8，僅在左側一部位 形成後懸掛安裝部3 2，同時，在左右兩側四部位形成副框 架安裝部3 3，在後懸掛安裝部3 2上安裝有後懸掛1 0的上 端，在副框架安裝部3 3上安裝有副框架2 9。 動力單元5之單氣筒水冷室内燃機6的本體，如圖3所 示，係由氣缸體40、氣缸頭41、氣缸頭蓋42及曲柄箱43 所構成，在朝向略水平方向的氣缸體4 0的頂端亦即車輛前 端，氣缸頭4 1係由螺栓4 4 (參照圖4 )結合為一體，同時， 在氣缸頭4 1前端，氣缸頭蓋4 2係由螺栓4 5結合為一體， 在氣缸體4 0的後端，曲柄箱4 3係由未圖示的螺栓結合為 一體。 另外，如圖3及圖4所示，在形成於氣缸體4 0的氣缸 孔4 6可滑動地嵌裝有活塞4 7，同時，在夾於氣缸體4 0與 曲柄箱4 3間的軸承4 8上可旋轉地枢支曲柄軸4 9，在活塞 4 7及曲柄軸4 9上分別介由活塞銷5 0及曲柄銷5 1可旋轉 地樞支連桿5 2的兩端，當活塞4 7作往復運動時，便旋轉 驅動曲柄軸4 9。 又，相對於氣缸孔4 6的頂部，在氣缸頭4 1底面形成有 燃燒室5 3，如圖4所示，在氣缸頭4 1上部形成有上游端 5 4 b朝向斜後上方的方向開口 ，同時，下游端5 4 a朝向斜 9 312/發明說明書(補件)/93-07/93109726 1244525 後下方的方向而於燃燒室5 3開口，且側視為略U字狀彎曲 的左右一對的吸氣管5 4，另外，在氣缸頭4 1下部形成有 上游端5 5 a朝向斜後上方的方向開口於燃燒室5 3，同時， 下游端5 5 b朝向略下方開口 ，且側視為略1 / 4圓弧狀彎曲 的左右一對的排氣管55，而分別開閉開口在燃燒室53的 吸氣管5 4的左右一對的吸氣口 5 4 a用的左右一對的吸氣閥 5 6、及分別開閉開口在燃燒室5 3的排氣管5 5的左右一對 的排氣口 5 5 a用的左右一對的排氣閥5 7，係分別可滑動自 如地嵌裝於氣缸頭4 1上，吸氣閥5 6及排氣閥5 7係配置為 呈V字開放狀，始自排氣閥5 7的排氣管5 5係從排氣閥軸 方向朝與氣缸軸線交叉的方向的吸氣閥5 6相反方向彎曲。 又，吸氣管5 8的下游端係連接於吸氣管5 4的上游端開 口 5 4 b，該吸氣管5 8的上游端係介由氣化器5 9 (參照圖1 ) 連接於空氣濾、淨器6 0，排氣管6 1的上游端係連接於排氣 管5 5的下游端開口 5 5 b，排氣管6 1的下游端係連接於消 音器62。 又，藉由氣門彈簧63的彈力而向閉閥方向作用的吸器 閥5 6及排氣閥5 7，係藉由配置於由氣缸頭4 1及氣缸頭蓋 4 2所形成的動閥室6 4内的動閥裝置7 0而進行開閉驅動。 亦即，動閥裝置7 0中，位於由圖4所示吸器閥5 6及排 氣閥5 7所夾之V字狀空間内，介由左右一對的軸承7 1 (參 照圖3 )，可旋轉自如地樞支朝向左右水平方向的一根凸輪 軸7 2，在該凸輪軸7 2的左側及右側一體形成有吸氣凸輪 7 3及排氣凸輪7 4，在較凸輪軸7 2的前面且上方的位置， 10 312/發明說明書(補件)/93-07/93109726 1244525 在氣缸頭4 1上軸架有吸氣搖軸7 5，同時，在吸氣搖軸7 5 下方的位置，在氣缸頭4 1上軸架有排氣搖軸7 6，該吸氣 搖軸7 5及排氣搖軸7 6係分別可搖動自如地枢支吸氣搖臂 7 7及排氣搖臂7 8，在該吸氣搖臂7 7及排氣搖臂7 8的一端 樞接有滾筒7 7 a、7 8 a，同時，在該吸氣搖臂7 7及排氣搖 臂7 8的另一端頂接於吸氣閥5 6及排氣閥5 7的頂端，在與 凸輪軸7 2 —體的從動鏈輪7 9及齒數為從動鏈輪7 9的一半 齒數且一體嵌裝於曲柄軸4 9的驅動鏈輪8 0繞掛著無端環 鏈8 1，當旋轉曲柄軸4 9時，凸輪軸7 2以一半的旋轉數被 旋轉驅動，以指定的時間，藉由凸輪軸7 2的吸氣凸輪7 3 及排氣凸輪7 4，開閉吸氣閥5 6及排氣閥5 7。 另外，如圖3所示，火星塞6 5的基端部（前端部）係以 相對氣缸孔4 6的中心軸線方向朝左面傾斜而使電極部6 5 a 面向燃燒室5 3的方式，將火星塞6 5螺接於氣缸頭4 1的螺 絲孔4 1 a。在凸輪軸7 2的右側（圖3中之上側），配設冷卻 水泵6 6，該冷卻水泵6 6的轉子係以磁性耦合力結合於從 動鏈輪7 9，當從動鏈輪7 9旋轉驅動時，以驅動冷卻水泵 6 6 ° 又’在冷卻水栗6 6的冷卻水通路設有丨亙溫6 7。 在氣缸頭4 1的頂部，如圖5所示，在與氣缸頭蓋4 2的 接合部的左半部形成有向外側突出的凸緣8 2，從該凸緣8 2 之左側部的上下2處朝向面對曲柄箱4 3側之後方分別形成 突出的轂部8 3、8 4，火星塞6 5的安裝用螺絲孔41 a面向 由凸緣8 2及上下一對的轂部8 3、8 4所包圍的空間，在上 11 312/發明說明書(補件)/93-07/93109726 1244525 下一對的轂部8 3、8 4形成螺合螺栓4 4用的螺栓孔8 3 a、 8 4 a 〇 另外，如圖5至圖7所示，排氣管5 5之下游端開口 5 5 b 係位於氣缸頭4 1之下方左側後部，以包圍該排氣管5 5之 下游部的方式形成***部8 5，以貫穿該***部8 5之斜前 左側部8 5 a使感測器檢測部（未圖示）突出於排氣管5 5内之 方式將屬排氣感測器之0 2感測器6 8安裝於***部8 5之斜 前左側部85a。 又，如圖5及圖7所示，在氣缸頭41之上方前後略中 央部4 1 b，在燃料噴射闊安裝孔4 1 c安裝有燃料噴射閥6 9， 藉由燃料喷射閥6 9在内燃機6的起動時或加速時等供給附 加的燃料。 如圖3所示，動力單元5之傳動裝置7係由V字皮帶式 無段變速機1 6及齒輪減速機1 7所構成，構成傳動裝置7 之本體的右變速機箱9 0係由螺栓9 2 —體結合於氣缸體 4 0，左變速機箱9 1係由未圖示之螺栓一體結合於右變速機 箱9 0，後輪支持箱8係由螺栓9 3 —體結合於右變速機箱 90，在構成V字皮帶式無段變速機16之輸入軸之曲柄軸 4 9設有驅動皮帶輪9 4，從動軸9 5係可旋轉地樞支於右變 速機箱9 0及後輪支持箱8，在該從動軸9 5介由離心離合 器9 6設有V字皮帶式無段變速機1 6之從動皮帶輪9 7，在 驅動皮帶輪94及從動皮帶輪97上繞掛有無段V字皮帶 9 8，在V字皮帶式無段變速機1 6中，當曲柄軸4 9超過指 定旋轉數進行旋轉時，離心離合器9 6成為連接狀態，當曲 12 312/發明說明書(補件)/93-07/93109726 1244525 柄軸4 9之旋轉數更加增大時，對應於此，從動軸 轉數增加較曲柄軸4 9之旋轉數增加為大。 另外，在齒輪減速機1 7中，在齒輪減速機1 7之 之從動軸9 5形成有小齒輪9 9，一體結合後輪9之荐 係可旋轉自如地樞支於後輪支持箱8及右變速機箱 間軸1 0 1係位於從動軸9 5與車軸1 0 0之中間，且由 持箱8及右變速機箱9 0可旋轉自如地樞支，在中~ 一體嵌合有喃合從動軸95之小齒輪99的齒輪102 形成有小齒輪1 0 3，在車軸1 0 0 —體嵌合有嚙合中N 之小齒輪1 0 3的齒輪1 0 4，從動軸9 5之轉矩係介由 9 9、齒輪1 0 2、中間軸1 0 1、小齒輪1 0 3及齒輪1 0 4 於車軸1 0 0，車軸1 0 0係相對於從動軸9 5被大幅满 如圖1、圖9及圖10所示，在氣缸體40上方兩4 照圖1 0 ) —體形成左右一對的懸吊部4 0 a，該一對的 4 0 a上分別設有一對支持孔4 0 b，在該支持孔4 0 b内 裝有橡膠襯墊110，在防震環111頂抵於該橡膠襯 的外端面且管狀隔片1 1 2頂接於橡膠襯墊1 1 0的内 狀態，在貫穿防震環1 1 1、橡膠襯墊1 1 0及隔片1 1 擎側樞軸1 1 3的前端螺接有螺母1 1 4，另外，如圖Ϊ 在後框架2 5之左右一對的主框架部2 6的前後中央 形成有支持孔34，在該支持孔34内壓入安裝有橡 1 1 5，在防震環1 1 1頂抵於該橡膠襯墊1 1 5的内端t 態，在貫穿橡膠襯墊1 1 5及防震環1 1 1的框架側樞 的前端螺接有螺母1 1 7。 312/發明說明書(補件)/93-07/93109726 95之旋 輸入軸 l 軸 1 0 0 90，中 後輪支 j 軸 1 0 1 ，同時 j 軸 10 1 小齒輪 而傳遞 L速。 則部（參 懸吊部 壓入安 墊1 1 0 端面的 2的引 !所示， 部2 6e 膠襯墊 6的狀 軸1 1 6 13 1244525 另夕卜，如圖9所示，在防震環1 1 1之前後兩側夾 側樞軸1 1 6，設有一對的橡膠安裝部1 1 1 a，在該橡 部1 1 1 a分別安裝有富有彈性的橡膠1 1 1 b，該橡膠 彈性頂接於主框架部2 6上形成之前後中央部2 6 e的 接部2 6 f。 又，如圖1 0所示，在連結左右主框架部2 6之前 部2 6 e的前部橫向構件2 7形成有螺栓孔2 7 a、2 7 b 於物品收納箱1 2之底壁1 2 a的前部橫向構件2 7的 2 7 a、2 7 b的正上方位置處形成的螺栓孔1 2 b内*** 1 1 8，該螺栓1 1 8上螺接有螺母1 1 9。 圖示之實施形態係如前述般構成，因此當藉由未 起動馬達旋轉驅動曲柄軸4 9時，經由空氣遽淨器 濾的空氣通過吸氣管5 8，經由氣化器5 9與燃料混 介由吸氣管5 4及吸氣閥5 6吸入燃燒室5 3，在壓縮 期的上死點附近藉由火星塞5 6，吸入混合氣進行點 燒，内燃機6開始運轉。 内燃機6之運轉開始後，當曲柄軸4 9超過指定3 時，離心離合器9 6成為連接狀態，介由齒輪減速才 轉驅動後輪9，小型二輪機車1便可開始行駛。 在小型二輪機車1之行駛狀態，因路面的凹凸等 輪9施加上下方向的力，當動力單元5以引擎側極 為中心作上下搖動時，藉由後懸掛1 0可緩衝後輪9 搖動。 另外，在偏離連結框架側樞軸1 1 6與引擎側樞軸 312/發明說明書(補件)/93-07/93109726 著框架 膠安裝 Π 1 b係 橡膠承 後中央 ，在位 螺栓孔 有螺栓 圖示的 6 0所過 合後， 行程終 火、燃 定轉數 幾1 7旋 而於後 軸1 1 3 之上下 1 1 3的 14 1244525 線的方向的力被施加於引擎側樞軸1 1 3的狀態，防震環1 1 1 之前後任一的橡膠1 1 1 b頂抵於主框架部2 6的橡膠承接部 2 6 f，防震環1 1 1以框架側枢軸1 1 6為中心旋轉，使得引擎 側樞軸1 1 3的移動獲得緩衝。 又，在包圍氣缸頭4 1之排氣管5 5的下游端的***部8 5 的斜前左側部8 5 a設有0 2感測器6 8，因此，在燃燒室5 3 内燃燒的燃燒氣體不經由長排氣通路而到達0 2感測器6 8 的檢測·^的結果，0 2感測器6 8的檢測精度及回答性良好。 又，如圖5至圖7所示，在設於氣缸頭4 1之***部8 5 的斜前左側部8 5 a的0 2感測器6 8上方，轂部8 4突出於左 外側方，在〇2感測器68前方，凸緣82突出於下方，且在 向下方開口的排氣管5 5的下游端開口 5 5 b連接著排氣管 6 1的上游端，而且，如圖1所示，因為在***部8 5及0 2 感測器6 8的斜前下方，存在有前框架2 0之橫向構件2 4， 因此該0 2感測器6 8係由此等轂部8 4、凸緣8 2、排氣管 6 1及橫向構件2 4所包圍，其結果尤其是藉由配置於0 2感 測器6 8的斜前下方的橫跨構件2 4，充分保護0 2感測器6 8 不受路面的飛石、跳起的水等的打擊，而不易受到損傷。 而且，0 2感測器6 8係從氣缸頭4 1之左側下部的***部 8 5朝向斜左上方安裝於氣缸頭4 1，因此只要拆下車身罩 1 5，即可較為容易進行0 2感測器6 8的安裝、拆下。 【圖式簡單說明】 圖1為安裝有具備本發明之排氣感測器之安裝構造的内 燃機的小型二輪機車的左側視圖。 15 312/發明說明書(補件)/93-07/93109726 1244525 圖2為圖1之要部俯視圖。 圖3為具備圖1所示之内燃機的動力單元的縱剖俯視 圖。 圖4為將圖1所示之内燃機的頂部縱向剖開的左縱剖側 視圖。 圖5為從圖1所示之内燃機的氣缸頭的左側上方所見的 立體圖。 圖6為從圖5所示之氣缸頭的下方所見的立體圖。 圖7為圖5所示之氣缸頭的左側視圖。 圖8為圖1所示之小型二輪機車的車體框架的分解立體 圖。 圖9為顯示圖1所示之小型二輪機車的車體框架的動力 單元安裝部的左側視圖。 圖1 0為沿著圖9中之X - X線所作的剖面圖。 (元件符號說明） 1 小型二輪機車 2 車體框架 2 a 中央踏板 3 前叉 4 前輪 5 動力單元 6 内燃機 7 傳動裝置 8 後輪支持箱 161244525 发明 Description of the invention: [Technical field to which the invention belongs] The present invention relates to a mounting structure for mounting an exhaust gas sensor on a cylinder head of an internal combustion engine. [Prior art] β Due to the large size of the exhaust gas sensor, as shown in the Japanese Patent Publication No. 3-3 0 7 0 2 to the publication, it is installed at the position where the exhaust manifold mounted on the cylinder head leaves the cylinder head. Exhaust sensor. However, in an internal combustion engine installed in a small vehicle such as a two-wheeled locomotive, since the internal combustion engine is exposed to the outside, a wide space for a large exhaust gas sensor is required, and a protective member is also required to protect a significant outward direction. Highlighted 4 non-gas sensors. (Patent Document 1) Japanese Patent Unexamined Patent Publication No. 3-3 0 7 0 2 [Summary of the Invention] (Problems to be Solved by the Invention) The object of the present invention is to provide a wide space for disposing an exhaust gas sensor. In addition, there is no need for the exhaust sensor mounting structure that protects the components for the exhaust sensor. (Means and Effects for Solving the Problem) The invention of the first patent application scope of the present case is that the suction and exhaust valve S has been opened in a V shape on the top of the internal combustion engine, and the exhaust pipe system from the exhaust valve is formed as The exhaust valve is bent from the axis direction of the exhaust valve to the direction opposite to the direction of the cylinder axis, and the mounting surface forming the exhaust system member is in the exhaust pipe 5 312 / Invention Manual (Supplement) / 93-07 / 93109726 The cylinder head of the internal combustion engine at the downstream end of 1244525 is inclined around the above-mentioned mounting surface inclined to the cylinder axis and located at the cylinder axis of the patent application No. 1 in a state where s has been placed outside the exhaust pipe, so In addition, the performance performance of the exhaust gas sensor configured by the exhaust gas sensor to protect the exhaust gas sensor from being protected by the exhaust gas sensor is suppressed. In addition, in the second patent application scope, a head cover joint surface is formed, and a recess is formed therebetween. At the same time, the depression suppresses the miniaturization of the exhaust gas sensor from the cylinder head. At the same time, the exhaust gas sensing is the third in the patent application scope. The end of the cylinder head of the axis is oriented toward the gas sensor mounting surface and is also disposed on the exhaust seat formed by the package seat and the above-mentioned exhaust system member. It is installed as an exhaust gas sensor for the internal combustion engine. The screw seat and the head of the cylinder head are surrounded by the exhaust system components and the head cover joint surface, so that the upper part is characterized by the state of the exhaust sensor system, and S has been placed in the exhaust pipe. Exhaust pipe outside. In the Ming Dynasty, the exhaust gas sensor is located around the mounting surface of the exhaust pipe to reduce the protruding of the installation space of the exhaust gas sensor from the surface of the cylinder head to reduce the necessity of parts. In the invention for improving the detection item of the exhaust gas sensor, the exhaust gas sensor mounting surface is formed at the joint surface of the head cover and the exhaust pipe part on the top of the cylinder head. Makes cylinder protection easier. In the invention, in a direction in which the horizontal plane of the cylinder of the internal combustion engine is slightly upward, the exhaust pipe surrounding the combustion chamber and screwing with the cylinder faces the upward direction of the exhaust pipe in the exhaust pipe, so it is provided by the exhaust system The component, the screw joint for the cylinder combination, and the cylinder head screw socket, which are formed by the recess formed by the joint surface of the cylinder coupling cover, are further protected by 6 312 / Invention Specification (Supplement) / 93-07 / 93109726 1244525, and , Can prevent water from attaching to the exhaust gas sensor or retaining the durability of the exhaust gas sensor. In addition, in the invention claimed in item 4 of the scope of patent application, the internal combustion-based power transmission device body and the rear wheel pivot body of the pivotally driven vehicle constitute a power unit, and the power unit is movable relative to the vehicle body to suppress the exhaust The amount of protrusion of the sensor from the surface of the cylinder head can reliably shake the upper unit even if the swing space around the cylinder head is not wide, and can maintain good riding performance. [Embodiment] Hereinafter, an embodiment of a detector mounting structure of a cylinder head of an internal combustion engine of the present invention shown in the drawings will be described. In the small two-wheeled locomotive 1 shown in FIG. 1, a front pipe 21 is formed in front of the vehicle body frame 2, and a fork 3 is rotatably fitted on the front pipe 21. A front wheel is rotatably mounted on the lower end of the front fork 3. 4. A power unit 5 can be installed at the rear of the rack 2 to be able to swing up and down freely. (In reality, the front, back, up, and left are based on the vehicle). This rocking power unit 5 is composed of a water-cooled internal combustion engine 6, a power transmission device 7, and a rear wheel support of a rocker-type upper-valve 4-stroke gas cylinder. A rear wheel support box 8 includes a rear wheel 9. In addition, 10 is mounted on the rear part of the vehicle body frame 2 and the rear part of the power unit 5, and an article storage box 12 for storing the helmet 1 1 is provided on the upper rear part of the vehicle body frame 2 and the article can be opened and closed to cover the article. 1 2 The upper seat cushion 1 3, the central pedal in the body frame 2: The fuel tank 1 4 is integrated in the square, and the body frame 2 is covered by the body cover 1 312 / Invention Specification (Supplement) / 93-07 / 93109726, lifting the body, integrated up and down, so the power exhaust end is integrated with the front body frame, shape, single circulation box, 8 storage boxes with items such as rear overhang, etc. . As shown in FIG. 8, the vehicle body frame 2 is composed of a front frame 20 that constitutes a front half of the vehicle body frame 2, a rear frame 25 that constitutes a rear half of the vehicle body frame 2, and a sub-frame 2 that is installed at the rear end of the rear frame 25 The front frame 20 is composed of a front tube 21, a descending frame 2 extending downward from the front tube 21, and a pair of left and right pedal support frames 2 extending from the lower portion of the lower frame to the left and right in the left-right direction. 3. It is composed of a cross member 24 which is connected to the rear end portions of a pair of left and right pedal support frames 23, and is an integrated cast frame forming a substantially rectangular frame in plan view. The cross member 2 4 is bent in a U shape when viewed from the rear. The rear portion of the fuel tank 14 is directly or integrally mounted on the cross member 2 4 by a fixing member (not shown). The front portion of the fuel tank 14 is directly The lowermost rib 22a or a fixing member (not shown) connected to the plurality of ribs 22a horizontally spaced in the vertical direction and spaced in the horizontal direction is attached to the lower frame 22. In addition, the rear frame 25 is composed of a pair of left and right main frame portions 26, a front cross member 27 of a front-to-rear direction middle portion 2 6e combining the left and right pair of main frame portions 26, and a left and right one The rear cross member 28 of the rear end portion of the pair of main frame portions 26 is configured to form a unitary cast frame. The pair of left and right main frame portions 26 is extended upward from the rear end of the front half portion 26 a which is tilted slightly forward, and the upper rear half portion 26b is extended rearward and upward, and the entire shape is inclined backward and upward. Bolt holes 2 3 b and recesses 2 3 c are formed in the rear portion 2 3 a of the pedal support frame 23 of the front frame 20, and at the same time, the front half portion 2 6 a of the main frame portion 2 6 of the rear frame 25 is formed. Bolt holes 2 6 c and convex portions 2 6 d are formed, and the main frame portion 8 312 / Invention Specification (Supplement) / 93-07 / 93109726 1244525 2 6 is fitted to the convex portion 2 6 d of the front half 2 6 a After the recess 2 3 c of the rear part 2 3 a of the pedal support frame 2 3, insert the bolt 3 0 into the bolt hole 2 3 b of the pedal support frame 2 3 and the bolt hole 2 6 c of the main frame part 2 6 and then the nut 3 1 is screwed and bolted to the bolt 30, so that the front frame 20 and the rear frame 25 are integrated. Further, the rear cross member 28 at the rear portion of the rear frame 25 is formed with a rear suspension mounting portion 3 2 at only one portion on the left side, and the sub-frame mounting portions 3 3 are formed at four locations on the left and right sides with the rear suspension mounting portion 3 2 An upper end of the rear suspension 10 is mounted thereon, and a sub-frame 29 is mounted on the sub-frame mounting portion 33. The body of the single-cylinder water-cooled internal combustion engine 6 of the power unit 5, as shown in FIG. 3, is composed of a cylinder block 40, a cylinder head 41, a cylinder head cover 42 and a crank case 43. The top end is the front end of the vehicle. The cylinder head 41 is integrated by bolts 4 4 (refer to FIG. 4). At the same time, at the front end of the cylinder head 41, the cylinder head cover 4 2 is integrated by bolts 4 5. At the rear end of 0, the crank cases 4 and 3 are integrated by bolts (not shown). As shown in FIGS. 3 and 4, a piston 47 is slidably fitted in a cylinder hole 46 formed in the cylinder block 40, and a bearing is sandwiched between the cylinder block 40 and the crank case 43. The crank shaft 4 9 is rotatably supported on 4 8, and the piston 4 7 and the crank shaft 4 9 are rotatably supported on both ends of the connecting rod 5 2 via a piston pin 5 0 and a crank pin 5 1 respectively. 4 7 When reciprocating, the crank shaft 4 9 is driven to rotate. A combustion chamber 53 is formed in the bottom of the cylinder head 41 with respect to the top of the cylinder bore 46. As shown in FIG. 4, an upstream end 5 4b is formed in the upper part of the cylinder head 41 and opens diagonally upward and backward. At the same time, the downstream end 5 4 a faces obliquely 9 312 / Invention Specification (Supplement) / 93-07 / 93109726 1244525 and opens to the combustion chamber 5 3 in a downward and rearward direction. A pair of suction pipes 5 4 is formed at the lower part of the cylinder head 41 with an upstream end 5 5 a opening to the combustion chamber 5 3 in an obliquely rearward and upward direction, and at the same time, the downstream end 5 5 b opens slightly downward and sideways. It can be regarded as a pair of left and right exhaust pipes 55 that are curved in a 1/4 arc shape, and a pair of left and right suction ports 5 4 a for opening and closing the left and right suction ducts 5 4 of the combustion chamber 53 respectively. The left and right pair of exhaust valves 5 7 and the left and right pair of exhaust valves 5 7 for opening and closing the exhaust pipes 5 5 which are opened in the combustion chamber 5 3 respectively are slidable. It is embedded in the cylinder head 41, and the suction valve 56 and the exhaust valve 57 are arranged in a V-shaped opening. The exhaust pipe 5 5 from the exhaust valve 5 7 is exhausted from the exhaust pipe. The bending direction of the intake valve axis intersecting the cylinder axis direction 56 opposite direction. The downstream end of the suction pipe 5 8 is connected to the upstream end opening 5 4 b of the suction pipe 5 4, and the upstream end of the suction pipe 5 8 is connected to the gasifier 5 9 (see FIG. 1). The upstream end of the air filter and cleaner 60, the exhaust pipe 61 is connected to the downstream end opening 5 5b of the exhaust pipe 55, and the downstream end of the exhaust pipe 61 is connected to the muffler 62. In addition, the suction valve 5 6 and the exhaust valve 5 7 acting in the valve closing direction by the elastic force of the valve spring 63 are arranged in a moving valve chamber 6 4 formed by the cylinder head 4 1 and the cylinder head cover 4 2. The internal valve device 70 is driven to open and close. That is, the moving valve device 70 is located in a V-shaped space sandwiched between the suction valve 56 and the exhaust valve 57 shown in FIG. 4, and is provided with a pair of left and right bearings 7 1 (see FIG. 3). A camshaft 7 2 is rotatably pivotally supported in a horizontal direction. The left and right sides of the camshaft 72 are integrally formed with an intake cam 7 3 and an exhaust cam 7 4. Front and upper position, 10 312 / Invention Manual (Supplement) / 93-07 / 93109726 1244525 On the cylinder head 4 1 there is a suction rocker 7 5 on the shaft bracket, and at the same time, it is below the suction rocker 7 5 There is an exhaust rocker shaft 7 6 on the cylinder head 41. The suction rocker shaft 7 5 and the exhaust rocker shaft 7 6 can pivot the suction rocker arm 7 7 and the exhaust rocker arm. 7 8. Rollers 7 7 a and 7 8 a are pivotally connected to one end of the suction rocker arm 7 7 and the exhaust rocker arm 7 8. At the same time, the suction rocker arm 7 7 and the exhaust rocker arm 7 8 The other end is abutted on the top of the suction valve 56 and the exhaust valve 57. The driven sprocket 7 9 and the number of teeth are integral with the cam shaft 7 2 and are integrally fitted. The drive sprocket 8 0 on the crank shaft 4 9 is hanging endlessly Chain 81, when the crank shaft 49 is rotated, the cam shaft 72 is rotationally driven at half the number of rotations, and the intake cam 7 3 and the exhaust cam 7 4 of the cam shaft 7 2 are opened and closed at a specified time. Suction valve 56 and exhaust valve 57. In addition, as shown in FIG. 3, the base end portion (front end portion) of the spark plug 65 is inclined to the left side with respect to the center axis direction of the cylinder bore 46 so that the electrode portion 6 5 a faces the combustion chamber 53. The spark plug 6 5 is screwed to the screw hole 4 1 a of the cylinder head 4 1. On the right side (upper side in Fig. 3) of the camshaft 72, a cooling water pump 6 6 is provided. The rotor of the cooling water pump 6 6 is magnetically coupled to the driven sprocket 7 9. When the driven sprocket 7 9 When rotating, the cooling water pump 6 6 ° is driven and the cooling water passage 6 6 is provided in the cooling water passage of the cooling water pump 6 6. As shown in FIG. 5, on the top of the cylinder head 41, a flange 8 2 protruding outward is formed on the left half of the joint portion with the cylinder head cover 4 2. Protruded hubs 8 3, 8 4 are formed on the rear side facing the crank case 4 3, and the mounting screw holes 41 a of the spark plug 6 5 face the hub 8 3 by the flange 8 2 and the upper and lower pair. The space enclosed by 8 4 is in the upper 11 312 / Invention Specification (Supplement) / 93-07 / 93109726 1244525 The lower pair of hubs 8 3, 8 4 form bolt holes for bolts 4 4 8 3 a, 8 4 a 〇 In addition, as shown in FIG. 5 to FIG. 7, the downstream end opening 5 5 b of the exhaust pipe 55 is located at the left rear portion below the cylinder head 41 to surround the downstream portion of the exhaust pipe 55. The bulge portion 8 5 is formed in such a manner that the sensor detection portion (not shown) protrudes into the exhaust pipe 5 5 by penetrating the oblique front left portion 8 5 a of the bulge portion 8 5. The 0 2 sensor 6 8 is mounted on the oblique front left portion 85 a of the raised portion 85. As shown in FIGS. 5 and 7, a fuel injection valve 6 9 is attached to the fuel injection wide mounting hole 4 1 c at a slightly central portion 4 1 b above and below the cylinder head 41. Additional fuel is supplied at the time of starting or accelerating the internal combustion engine 6. As shown in FIG. 3, the transmission device 7 of the power unit 5 is composed of a V-belt stepless speed changer 16 and a gear reducer 17. The right transmission case 9 0 of the main body of the transmission device 7 is a bolt 9. 2 is integrated with the cylinder block 40, the left transmission case 9 1 is integrated with the right transmission case 90 by bolts (not shown), and the rear wheel support box 8 is connected with the right transmission case 90 by bolts 9 3 A drive shaft 9 4 is provided on a crank shaft 4 9 constituting an input shaft of the V-belt type stepless speed changer 16, and a driven shaft 9 5 is rotatably pivotally supported on the right transmission case 90 and the rear wheel support box 8. The driven shaft 9 5 is provided with a driven belt pulley 9 7 of a V-belt stepless speed changer 16 through a centrifugal clutch 9 6. A stepless V-shaped belt 9 is wound around the driving pulley 94 and the driven pulley 97. 8. In the V-belt stepless transmission 16, when the crank shaft 4 9 rotates more than the specified number of rotations, the centrifugal clutch 96 becomes connected, and when the crank 12 312 / Invention Specification (Supplement) / 93- 07/93109726 1244525 When the number of rotations of the handle shaft 4 9 is further increased, correspondingly, the number of rotations of the driven shaft is increased compared to the number of rotations of the crank shaft 4 9 The number of rotations increases. In addition, in the gear reducer 17, a pinion 9 9 is formed on the driven shaft 9 5 of the gear reducer 17, and a combination of the rear wheel 9 is rotatably pivotally supported on the rear wheel support box 8. The shaft 1 0 1 between the right and right gearboxes is located between the driven shaft 95 and the axle 100, and it is pivotally supported by the holding box 8 and the right gearbox 90, which can be rotated freely, and is fitted in the center ~ The gear 102 of the pinion 99 that fits the driven shaft 95 is formed with a pinion 1 0 3, and the axle 1 0 0 is fitted with a pinion 1 of the meshing N pinion 1 0 3 and a driven shaft 9 5 The torque is through 9 9, gear 1 0 2, intermediate shaft 1 0 1, pinion 1 0 3, and gear 1 0 4 to the axle 1 0 0, the axle 1 0 0 is significantly larger than the driven shaft 9 5 As shown in Figs. 1, 9 and 10, the upper and lower sides of the cylinder block 40 are two and four as shown in Fig. 10). The left and right suspension portions 40a are formed on the body. The support hole 4 0 b is provided with a rubber gasket 110 in the support hole 40 b. The shockproof ring 111 abuts against the outer end face of the rubber lining and the tubular spacer 1 1 2 abuts on the rubber gasket 1 1 0 internal state, penetrating the anti-vibration ring 1 1 1, rubber The pad 1 1 0 and the spacer 1 1 are screwed with nuts 1 1 4 at the front end of the engine-side pivot 1 1 3, and as shown in FIG. A support hole 34 is formed, and rubber 1 1 5 is press-fitted in the support hole 34. The shockproof ring 1 1 1 abuts against the inner end t of the rubber gasket 1 1 5 and penetrates the rubber gasket 1 1 A nut 1 1 7 is screwed to the front end of the frame side pivot 5 and the shockproof ring 1 1 1. 312 / Invention Manual (Supplement) / 93-07 / 93109726 The rotation of 95 input shaft l shaft 1 0 0 90, middle rear wheel support j shaft 1 0 1, at the same time j shaft 10 1 pinion gear to transmit L speed. The part (refer to the guide of the suspension part pressed into the 2 of the end face of the mounting pad 1 1 0), as shown in the part 2 6e, the shape axis of the rubber pad 6 1 1 6 13 1244525 In addition, as shown in Figure 9, The ring 1 1 1 has a pair of rubber pivots 1 1 6 on the front and rear sides, and is provided with a pair of rubber mounting portions 1 1 1 a. Elastic rubbers 1 1 1 b are respectively mounted on the rubber portions 1 1 1 a. It is elastically abutted on the main frame portion 26 to form a front portion 2 6 f of the front and rear central portion 2 6 e. Also, as shown in FIG. 10, the front portion connecting the left and right main frame portions 26 to the front portion 2 6e The cross member 2 7 is formed with bolt holes 2 7 a, 2 7 b and bolts formed at positions directly above 2 7 a, 2 7 b of the front cross member 2 7 of the bottom wall 1 2 a of the article storage box 12. 1 1 8 is inserted into the hole 1 2 b, and the nut 1 1 9 is screwed to the bolt 1 1 8. The embodiment shown in the figure is configured as described above. Therefore, when the crank shaft 49 is driven by rotation without a motor, The air filtered by the air purifier passes through the suction pipe 5 8 and is mixed with the fuel through the gasifier 59 and sucked into the combustion chamber 5 3 through the suction pipe 5 4 and the suction valve 5 6, and is at the top dead center of the compression period. Nearby with Mars plug 5 6 and suck The mixed gas is burned, and the internal combustion engine 6 starts to run. After the operation of the internal combustion engine 6, when the crank shaft 4 9 exceeds the specified 3, the centrifugal clutch 9 6 is connected, and the rear wheel 9 is driven to rotate through the gear reduction, and the small second wheel The locomotive 1 can start driving. In the running state of the small two-wheeled locomotive 1, the wheel 9 exerts a vertical force due to the unevenness of the road surface and the like. Cushion the rear wheel 9 to swing. In addition, the frame side pivot 1 1 6 and the engine side pivot 312 / Invention Manual (Supplement) / 93-07 / 93109726 are attached to the center of the rubber rear end by mounting the frame rubber. After the position 60 with the bolts shown in the bolt holes is over, the stroke end fire, the number of revolutions of the engine are rotated by 17, and the force in the direction of the line 14 1244525 above and below the 1 1 3 is applied. In the state of the engine-side pivot 1 1 3, the rubber ring 1 1 1 1 of the shock ring 1 1 1 abuts against the rubber receiving portion 2 6 f of the main frame portion 2 6, and the shock ring 1 1 1 pivots at the frame side. 1 1 6 is the center rotation, so that the movement of the engine-side pivot 1 1 3 obtains In addition, the 0 2 sensor 6 8 is provided in the oblique front left portion 8 5 a of the swelled portion 8 5 surrounding the downstream end of the exhaust pipe 5 5 of the cylinder head 4 1, so that it burns in the combustion chamber 5 3 As a result of the detection of the combustion gas reaching the 0 2 sensor 6 8 without passing through the long exhaust path, the detection accuracy and responsiveness of the 0 2 sensor 6 8 are good. As shown in FIGS. 5 to 7, above the 0 2 sensor 6 8 provided at the oblique front left portion 8 5 a of the raised portion 8 5 of the cylinder head 41, the hub portion 8 4 protrudes from the left outer side. In front of the 02 sensor 68, the flange 82 protrudes below, and the downstream end of the exhaust pipe 55, which opens downward, is opened 5 5b, and is connected to the upstream end of the exhaust pipe 61, and, as shown in FIG. As shown in FIG. 1, because the bulging portion 85 and the oblique front and bottom of the 0 2 sensor 68 are provided with a cross member 2 4 of the front frame 20, the 0 2 sensor 6 8 is such a hub portion. 8 4. Flange 8 2. Exhaust pipe 61 and cross member 2 4 are surrounded. As a result, the cross member 24 arranged at the oblique front and lower part of the 0 2 sensor 6 8 is fully protected. 2 Sensor 6 8 It is not easily hit by flying stones, jumping water, etc. on the road. Furthermore, the 0 2 sensor 6 8 is mounted on the cylinder head 4 1 obliquely to the upper left from the raised portion 85 5 on the lower left side of the cylinder head 4 1. Therefore, it is easier to perform the 0 2 by removing the body cover 15. Installation and removal of sensor 68. [Brief description of the drawings] FIG. 1 is a left side view of a small two-wheeled locomotive equipped with an internal combustion engine equipped with an installation structure of an exhaust gas sensor of the present invention. 15 312 / Invention Specification (Supplement) / 93-07 / 93109726 1244525 Figure 2 is a top view of the main part of Figure 1. Fig. 3 is a vertical sectional plan view of a power unit including the internal combustion engine shown in Fig. 1. Fig. 4 is a left longitudinal sectional side view of the internal combustion engine shown in Fig. 1, which is longitudinally cut away from the top. Fig. 5 is a perspective view as seen from the upper left side of the cylinder head of the internal combustion engine shown in Fig. 1. Fig. 6 is a perspective view seen from below the cylinder head shown in Fig. 5. FIG. 7 is a left side view of the cylinder head shown in FIG. 5. Fig. 8 is an exploded perspective view of a body frame of the small two-wheeled locomotive shown in Fig. 1. Fig. 9 is a left side view showing a power unit mounting portion of a body frame of the small two-wheeled locomotive shown in Fig. 1. FIG. 10 is a cross-sectional view taken along line X-X in FIG. 9. (Description of component symbols) 1 Small two-wheeled locomotive 2 Body frame 2 a Center pedal 3 Front fork 4 Front wheel 5 Power unit 6 Internal combustion engine 7 Transmission device 8 Rear wheel support box 16
3 12/發明說明書(補件)/93-07/93109726 1244525 9 後輪 10 後懸掛 11 安全帽 12 物品收納箱 1 2 a 物品收納箱1 2之底壁 — 1 2b 螺栓孔 - 13 座墊 14 燃料箱 · 15 車身罩 1 6V 字皮帶式無段變速機 17 齒輪減速機 20 前框架 2 1 前管 2 2 下降框架 22a 肋條 2 3 踏板支持框架 φ 2 3a 踏板支持框架2 3的後部 2 3b 螺栓孔 2 3c 凹部 2 4 橫向構件 2 5 後框架 2 6 主框架部 2 6a 主框架部2 6的前半部 26b 主框架部26的後半部 17 3 12/發明說明書(補件)/93-07/93109726 1244525 26c 螺栓孔 26d 凸部 26e 前後方向中間部 2 6 f 橡膠承接部 27 前部橫向構件 2 7 a、2 7 b 螺栓孔 28 後部橫向構件 2 9 副框架 30 螺栓 3 1 螺母 32 後懸掛安裝部 33 副框架安裝部 3 4 支持孔 4 0 氣缸體 4 0a 懸吊部 4 0b 支持孔 4 1 氣缸頭 4 1a 螺絲孔 41b 氣缸頭41之上方前後略中 4 1c 燃料噴射閥安裝孔 4 2 氣缸頭蓋 4 3 曲柄箱 44 螺栓 4 5 螺栓 312/發明說明書(補件)/93-07/93109726 央部 183 12 / Instruction for invention (Supplement) / 93-07 / 93109726 1244525 9 Rear wheel 10 Rear suspension 11 Safety helmet 12 Item storage box 1 2 a Bottom wall of item storage box 1 2 — 1 2b Bolt hole-13 Seat cushion 14 Fuel tank · 15 Body cover 1 6V belt-type stepless speed changer 17 Gear reducer 20 Front frame 2 1 Front tube 2 2 Drop frame 22a Rib 2 3 Pedal support frame φ 2 3a Pedal support frame 2 3 Rear 2 3b Bolt Hole 2 3c Recess 2 2 Cross member 2 5 Rear frame 2 6 Main frame portion 2 6a Front half of main frame portion 2 6b Rear half of main frame portion 26 17 3 12 / Invention specification (Supplement) / 93-07 / 93109726 1244525 26c Bolt hole 26d Convex part 26e Front-rear middle part 2 6 f Rubber receiving part 27 Front cross member 2 7 a, 2 7 b Bolt hole 28 Rear cross member 2 9 Sub-frame 30 Bolt 3 1 Nut 32 Rear suspension installation Part 33 Sub-frame mounting part 3 4 Support hole 4 0 Cylinder block 4 0a Suspension part 4 0b Support hole 4 1 Cylinder head 4 1a Screw hole 41b Cylinder head 41 slightly above and behind the cylinder head 4 1c Fuel injection valve mounting hole 4 2 Cylinder Head cover 4 3 Crank case 44 Bolt 4 5 Bolt 312 / Invention / 93-07 / 18 93109726 book central portion (complement member)
1244525 4 6 氣缸孔 4 7 活塞 4 8 軸承 4 9 曲柄軸 5 0 活塞銷 5 1 曲柄銷 52 53 54 54a 54b 55 55a 5 5b 56 57 58 59 60 6 1 62 63 64 6 5 連桿1244525 4 6 Cylinder bore 4 7 Piston 4 8 Bearing 4 9 Crankshaft 5 0 Piston pin 5 1 Crank pin 52 53 54 54a 54b 55 55a 5 5b 56 57 58 59 60 6 1 62 63 64 6 5 Connecting rod
燃燒室 吸氣管 吸氣管54之下游端 吸氣管5 4上游端 排氣管 排氣管5 5之上游端 排氣管5 5之下游端 吸氣閥Combustion chamber Suction pipe Downstream end of suction pipe 54 Suction pipe 5 4 Upstream end Exhaust pipe Exhaust pipe 5 5 Upstream end Exhaust pipe 5 5 Downstream end Suction valve
排氣閥 吸氣管 氣4匕器 空氣遽淨器 排氣管 消音器 氣門彈簧 動閥室 火星塞 19 312/發明說明書(補件)/93-07/93109726 1244525 6 5a 電 極 部 6 6 冷 卻 水 泵 67 恆 溫 器 68 排 氣 感 測器之〇2感 測 器 69 燃 料 喷 射閥 70 動 閥 裝 置 7 1 軸 承 72 凸 輪 軸 73 吸 氣 凸 輪 74 排 氣 凸 輪 75 吸 氣 搖 軸 76 排 氣 搖 轴 77 吸 氣 搖 臂 78 排 氣 搖 臂 77a > 78 a 滾筒 79 從 動 鏈 輪 80 驅 動 鏈 輪 8 1 無 端 環 鏈 82 凸 緣 83 ^ 84 轂部 83a 、84 a 螺栓iL 85 隆 起 部 85a 隆 起 部 85之斜前左 側 部 90 右 變 速 機箱 312/發明說明書(補件)/93-07/93 ] 09726Exhaust valve suction pipe air 4 dimmer air purifier exhaust pipe muffler valve spring moving valve chamber Mars plug 19 312 / Invention Manual (Supplement) / 93-07 / 93109726 1244525 6 5a Electrode section 6 6 Cooling water pump 67 Thermostat 68 Exhaust sensor 02 sensor 69 Fuel injection valve 70 Actuating valve device 7 1 Bearing 72 Camshaft 73 Suction cam 74 Exhaust cam 75 Suction rocker 76 Exhaust rocker 77 Suction Rocker 78 Exhaust rocker 77a &78; Drum 79 Driven sprocket 80 Drive sprocket 8 1 Endless chain 82 Flange 83 ^ 84 Hub 83a, 84 a Bolt iL 85 Swell 85a Slope 85 Front left part 90 right transmission case 312 / Invention Manual (Supplement) / 93-07 / 93] 09726
20 1244525 9 1 左 變 速 機 /r/r 相 92 螺 栓 93 螺 栓 94 驅 動 皮 帶 輪 95 從 動 轴 96 離 心 離 合 器 97 從 動 皮 帶 輪 98 無 段 V 字 皮帶 99 小 齒 輪 10 0 車 轴 10 1 中 間 轴 10 2 齒 輪 10 3 小 齒 輪 10 4 齒 輪 11 0 橡 膠 概 墊 11 1 防 震 環 11 la 橡 膠 安 裝 部 11 lb 橡 膠 11 2 管 狀 隔 片 11 3 引 擎 側 樞 轴 11 4 螺 母 11 5 橡 膠 襯 墊 11 6 框 架 側 樞 軸 11 7 螺 母 312/發明說明書(補件)/93-07/93 ] 09726 1244525 118 螺栓 1 1 9 螺母 312/發明說明書(補件)/93-07/93〗0972620 1244525 9 1 Left transmission / r / r phase 92 bolt 93 bolt 94 drive pulley 95 driven shaft 96 centrifugal clutch 97 driven pulley 98 stepless V-belt 99 pinion 10 0 axle 10 1 intermediate shaft 10 2 gear 10 3 Pinion 10 4 Gear 11 0 Rubber bumper 11 1 Shock ring 11 la Rubber mount 11 lb Rubber 11 2 Tubular spacer 11 3 Engine side pivot 11 4 Nut 11 5 Rubber gasket 11 6 Frame side pivot 11 7 Nut 312 / Invention Specification (Supplement) / 93-07 / 93] 09726 1244525 118 Bolt 1 1 9 Nut 312 / Invention Specification (Supplement) / 93-07 / 93〗 09726