200823358 九、發明說明： 【發明所屬之技術領域】 本發明係關於一種含氧感測器裝設構造，尤其是關於使 用於機車之噴射引擎之含氧感測器裝設構造者。 【先前技術】 為了精準地控制空燃比（air/fuel ratio)，大部分的喷射引 擎都裝設有含氧感測器，以測定廢氣中之含氧量，並將含 氧量資訊傳達給電腦。含氧感測器一般係裝設於排氣管道 與觸媒轉換器之間，含氧感測器之感測部為感測廢氣中的 含氧量，當感測部内、外側之含氧濃度差變大，會產生電 壓〇 〇 而電腦在接收含氧感測器所傳來的電壓訊號後，依其電 壓高低判斷目前空燃比之大小，以控制噴射器修正空燃 比，以使引擎内燃燒完全，減少排氣污染。而為了提昇此 含氧感測器的靈敏度，含氧感測器一般皆裝設在排氣管道BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen sensor mounting structure, and more particularly to an oxygen sensor mounting structure for a jet engine for a locomotive. [Prior Art] In order to accurately control the air/fuel ratio, most of the jet engines are equipped with an oxygen sensor to measure the oxygen content in the exhaust gas and communicate the oxygen content information to the computer. . The oxygen sensor is generally installed between the exhaust pipe and the catalytic converter, and the sensing portion of the oxygen sensor senses the oxygen content in the exhaust gas, and the oxygen concentration in the inner and outer portions of the sensing portion When the difference becomes large, voltage is generated, and after receiving the voltage signal from the oxygen sensor, the computer judges the current air-fuel ratio according to the voltage level to control the injector to correct the air-fuel ratio to make the engine burn. Completely, reducing exhaust pollution. In order to improve the sensitivity of the oxygen sensor, the oxygen sensor is generally installed in the exhaust pipe.
上接近引擎側排氣出口處，以精確地測定含氧量。對於小 引擎排氣數而言，含氧感測器甚至比排氣管道的口徑還 大，其影響引擎之性能甚鉅。 圖8係顯示-先前之機車之含氧感測器褒設構造。如圖8 所不，其含氧感測器63係直接裝設在排氣裝置η之排氣其 道62上。先前的含氧感測器63的裝設方式，大都是夢由二 接的方式’將含氧感測器63直接裝設在接Μ擎㈣氣出干 口 65之排氣管道62上。但是由於機車 叹干 < 锻積小，於有限之 空間中必須裝載各種零件，且引擎侧 饼乳出口 65附近空間 115567.doc 200823358 更加狹小，因此不易於安裝。尤其是5〇cc41〇〇cc之機 車，可利用之空間更小。再加上焊接作業所使用的焊搶有 角度的限制，為了與其他零件保持一定距離不產生干涉而 安裝含氧感測器，有時必須於焊接機台上旋轉排氣裝置Μ 方可進行焊接。由於上述種種條件限制的情形下，先前技 術中欲進行將含氧感測器63焊接在排氣管道62上之作=， 會受到許多阻礙，使得作業困難度高且工時長。 〃 圖9係顯示先前之機車之含氧感測器裝設構造之擴大剖 面圖。如圖9所示，安裝後，含氧感測器63的感測部64會 伸入㈣管道62内部。由於感測部64伸人排氣管道^内二 有疋/衣度，以使含氧感測器維持正常之靈敏度，但這會 使得=部分之排氣管道62之剖面積變小。先前之一般構^ 中衣5又後之剖面積大約變成為裝設前之1/2。因此排氣 吕道62中之感測部64成為一種阻礙，於排氣狀態時，會擋 住氣流造成流速減緩、排氣順暢度降低，結果使得引擎之 功率降低。而當氣流通過該剖面積變小之部分而到達原剖 面積之。P分時’流速亦會突然改變，以致造成排氣管道 内口P產生異音’且會形成亂流，而影響排氣順暢度等。因 匕在先4技術中’加裝含氧感測器〇雖可使燃料使用控制 上更為精確’但部無法避免地會產生引擎性能受到影響而 無法達到最高效率的問題。 【發明内容】 W於上述驾知機車之含氧感測器裝設構造中之問題，長 久以來業界及使用者皆希望能獲得一有效的改善解決方 115567.doc 200823358 案。而本發明則是發明人針對上述先前之含氧感測器裝， 構造中所存在之問題’苦d考並長久致力於靜之後又 而提出之-薪新之解決方案。亦即，本發明之目：在於提 供-種含氧感測器裝設結構，其可易於配合機車内其他裳 件之配置而裝設含氧感測器’並且可增加含氧感測器之壽 命及減少排氣阻力提昇引擎效能’精確控制燃料量使其在 引擎内部完全燃燒進而減少排放污染。The upper side is close to the engine side exhaust outlet to accurately measure the oxygen content. For small engine exhausts, the oxygen sensor is even larger than the exhaust pipe, which affects the performance of the engine. Figure 8 shows the oxygen-containing sensor mounting configuration of the previous locomotive. As shown in Fig. 8, the oxygen-containing sensor 63 is directly mounted on the exhaust passage 62 of the exhaust unit n. The installation method of the prior oxygen sensor 63 is mostly a method in which the oxygen sensor 63 is directly mounted on the exhaust pipe 62 of the exhaust gas outlet 65 of the engine. However, because the locomotive sighs & sighs, the forging is small, and various parts must be loaded in a limited space, and the space near the engine side cake outlet 65 is narrower, so it is not easy to install. In particular, the 5〇cc41〇〇cc locomotive has a smaller space available. In addition, the welding is used to limit the angle of the welding, in order to maintain a certain distance from other parts without interference and install the oxygen sensor, sometimes it is necessary to rotate the exhaust device on the welding machine before welding . Due to the above various conditions, in the prior art, the welding of the oxygen sensor 63 to the exhaust duct 62 is subject to many obstacles, resulting in high difficulty in operation and long working hours. 〃 Figure 9 is an enlarged cross-sectional view showing the installation structure of the oxygen sensor of the previous locomotive. As shown in Fig. 9, after installation, the sensing portion 64 of the oxygen sensor 63 extends into the interior of the (4) conduit 62. Since the sensing portion 64 extends into the exhaust duct 2, the enthalpy/clothing degree is maintained to maintain the normal sensitivity of the oxygen sensor, but this causes the sectional area of the exhaust duct 62 of the = portion to become small. The cross-sectional area of the previous general structure of the middle garment 5 is approximately 1/2 of that before the installation. Therefore, the sensing portion 64 in the exhaust channel 62 becomes an obstacle, and in the exhaust state, the flow rate is prevented from being slowed down, and the exhaust smoothness is lowered, with the result that the power of the engine is lowered. When the airflow passes through the portion where the sectional area becomes smaller, it reaches the original sectional area. The P-time division 'the flow rate also changes abruptly, causing an abnormal sound to be generated in the inner port P of the exhaust duct, and turbulent flow is formed, which affects the exhaust smoothness and the like. Since the addition of an oxygen sensor in the prior art 4 can make the fuel usage control more precise, it is inevitable that the engine performance is affected and the highest efficiency cannot be achieved. SUMMARY OF THE INVENTION In the above-mentioned problem of the oxygen sensor mounting structure of the locomotive, it has been long sought by the industry and users to obtain an effective improvement solution. 115567.doc 200823358. However, the present invention is directed to the above-mentioned previous oxygen-containing sensor package, the problem existing in the construction, and the long-term commitment to static and then proposed a new solution. That is, the object of the present invention is to provide an oxygen-containing sensor mounting structure which can be easily equipped with an oxygen-containing sensor in the configuration of other standing parts in the locomotive and can add an oxygen-containing sensor. Life and reduced exhaust resistance improve engine performance 'Precision control of fuel volume allows it to burn completely inside the engine to reduce emissions.
。。具體而t ’本發明之請求们之發明’係—種含氧感測 器裝設構造，其係用於車輛之排氣裝置，其包含管徑⑺） 較所欲裝設之上述排氣褒置之排氣管道之管徑（a)大1盥 上述排氣管道不同體之擴管、及含氧感測器；上述含氧感 測器係設置於上述擴管上’上述擴管係置於預先分離之上 述排氣裝置之排氣管道間並與其結合。 根據本發明之上述構成，藉由將含氧感測器裝設構造構 成為上述含氧感測器設置於上述擴管，且上述擴管結合於 預先分離之上述排氣裝置之排氣管道間，即可先藉由例如 焊接、鎖合等方式將上述含氧感測器設置上述擴管上，於 藉由例如焊接等將上述擴管與上述排氣管道結合前，視實 際情況之需要而對暫時置於預先分離之上述排氣管道之間 之上述擴官作適當之轉動或移動調整，以易於焊接等之結 合作業的進行，而使得作業容易並減少工時。 此外，由於使用上述擴管擴大了排氣氣流流路中設置有 上述3氧感測器之感測部之部分之剖面積，因此裝設後仍 月b保持排氣氣流流路之剖面積和裝設前之剖面積大致相 115567.doc 200823358 同，故能維持排氣氣流之流速及順暢度不變、穩定控制空 燃比之目標值，以確保引擎之功率，且亦可防止排氣管道 内部產生異音。 本發明之請求項2之發明，係如請求項丨之含氧感測器裝 •設構造’其中上述擴管結合於上述排氣管道後之排氣管道 擴大部分之長度（L)，大致等於上述含氧感測器之感測部 之座體之外徑（〇)之2倍。 广根據本發明之上述構成，藉由使上述擴管結合於上述排 氣管道後之排氣管道擴大部分之長度⑹，大纟等於上述 含氧感測器之座體之外徑（D)之2倍，則更能使排氣效率及 引擎性能達到最佳。 本毛月之明求項3之發明，係如請求項〗之含氧感測器裝 設構造’其中上述擴管係以導熱係數較上述排氣管道之材 質之導熱係數低之材質所形成者。 、，根據本發明之上述構成，藉由以導熱係數較上述排氣管 道之材質之導熱係數低之材f形成上述擴管，則可降低排 氣之高溫傳遞至含氧感測器之熱量，而可減少高溫之排氣 對含氧感測器之影響，延長含氧感測器的壽命。 本發明之請求項4之發明，係如請求項!之含氧感測器裝 設構造’其中上述含氧感測器係設置成由上述擴管之剖面 觀之時’其縱軸與水平面所成之角度位於自水平面兩侧起 各10°以上之角度範圍内。 2據本發明之上述構成，由於可自由地調整上述擴管裝 。又％之角度’故可在上述含氧感測器之可能感測之角度範 115567.doc 200823358 圍’亦即其縱軸與水平面所成之角度位於 各1〇。以上之角度範圍内’配合車體所裳載之== 自由調：，因此可大幅地增加含氧感挪 ： 度，而提昇作業性。 傅k之自由 本發明之請求項5之發明，係如請求項 設構造，其中以上述含氣咸 氣感心表 方向之方式… 感測部前端朝順著氣流 上。方式而傾斜地設置上述含氧感測器於上述擴管 ❿ :據本發明之上述構成，由於可配合車體所裝載之其他 二時以上述含氧感測器之感测部前端朝朝順著排 測哭机因°b之方式，而相對於擴管傾斜地設置上述含氧感 而;昇=大幅地增加含氧編裝設構造之自由度， 本發明之請求項6之發明，禆 ^ 係如印求項1之含氧感測器裝 秦，其中與上述擴管結合之上、下游端排氣管 :部附近之管徑係形成為較上述擴管之開口部附近之管徑 ::大’上述擴管之排氣上、下游端係插入於上述上、下游 端排氣管道之上述開口部内。 根據本發明之上述構成，由於將上述上、下游端排氣管 ^之與上述擴管結合之上述開口部附近之管徑形成為較上 述擴管之開口部附近之管徑為大之形狀’而將上述擴管之 排虱上、下游端插入上述上、下游端排氣管道之上述開口 部内’因此可易於結合上述擴管與上述排氣裝置之上、下 游端排氣管道。 115567.doc -10- 200823358 本發明之請求項7之發明， 設構造，其中與上述擴w、“们之含氧感測器裝 附近之管徑係$ # s 1313之下游端排氣管道之開口部 大，上述於^較上述擴管之開口部附近之管徑為 之上述二二下游端係插入於上述下游端排氣管道 開口部附近之C::r游端排氣管道之 Φ 游端之上述開口::―於上述擴管之排氣上 本發明之請求項8 設構造，丨中與上述二1八係如請求項1之含氧感測器裝 附近之管徑係形成心道之開口部. . Specifically, the 'invention of the present invention' is an oxygen-containing sensor mounting structure for a vehicle exhaust device including a pipe diameter (7)) which is more than the above-mentioned exhaust gas to be installed. The pipe diameter of the exhaust pipe (a) is larger than 1 pipe expansion of the exhaust pipe and the oxygen sensor; the oxygen sensor is disposed on the pipe expansion And combined with the exhaust pipe of the above-mentioned exhaust device which is separated in advance. According to the above configuration of the present invention, the oxygen-containing sensor is configured such that the oxygen-containing sensor is disposed in the expansion pipe, and the expansion pipe is coupled between the exhaust pipes of the exhaust device separated in advance. The oxygen sensor may be first disposed on the expansion pipe by, for example, welding, locking, etc., before the expansion pipe is combined with the exhaust pipe by, for example, welding, depending on actual conditions. Appropriate rotation or movement adjustment of the above-mentioned expansion temporarily placed between the above-mentioned exhaust ducts, which are temporarily placed in advance, facilitates the bonding work such as welding, thereby facilitating the work and reducing the man-hour. Further, since the cross-sectional area of the portion of the exhaust gas flow path in which the sensing portion of the above-described three-oxygen sensor is provided is enlarged by using the above-described expansion pipe, the cross-sectional area of the exhaust gas flow path is maintained even after the installation. The cross-sectional area before installation is roughly the same as 115567.doc 200823358, so the flow rate and smoothness of the exhaust airflow can be maintained, and the target value of the air-fuel ratio can be stably controlled to ensure the power of the engine and also prevent the inside of the exhaust pipe. Produce an abnormal sound. The invention of claim 2 of the present invention is the oxygen-containing sensor mounting structure of the request item, wherein the length (L) of the enlarged portion of the exhaust duct after the expansion tube is coupled to the exhaust duct is substantially equal to The outer diameter (〇) of the seat of the sensing portion of the oxygen sensor is twice as large. According to the above configuration of the present invention, the length (6) of the enlarged portion of the exhaust duct after the expansion pipe is coupled to the exhaust duct is equal to the outer diameter (D) of the seat body of the oxygen-containing sensor. 2 times, it can optimize exhaust efficiency and engine performance. The invention of claim 3 of the present invention is the oxygen sensor installation structure of the request item, wherein the expansion pipe is formed by a material having a thermal conductivity lower than that of the material of the exhaust pipe. . According to the above configuration of the present invention, by forming the expansion tube with a material f having a thermal conductivity lower than that of the material of the exhaust duct, the heat transfer from the high temperature of the exhaust gas to the oxygen sensor can be reduced. It can reduce the influence of high temperature exhaust on the oxygen sensor and prolong the life of the oxygen sensor. The invention of claim 4 of the present invention is the oxygen-containing sensor mounting structure of the present invention, wherein the oxygen-containing sensor is disposed such that the longitudinal axis and the horizontal plane are formed by the cross-sectional view of the expanded tube The angles are in the range of 10° or more from both sides of the horizontal plane. According to the above configuration of the present invention, the above-described pipe expansion device can be freely adjusted. The angle of % can be set at an angle of 115 567.doc 200823358, that is, the angle between the longitudinal axis and the horizontal plane. In the above range of angles, the == free adjustment: in conjunction with the car body, so that the oxygen-containing sensation can be greatly increased, and the workability is improved. The invention of claim 5 of the present invention is a request structure in which the direction of the gas-containing salty sensation is oriented... The front end of the sensing portion faces the airflow. The above-described oxygen-containing sensor is disposed obliquely to the above-described pipe expansion device. According to the above configuration of the present invention, the front end of the sensing portion of the oxygen-containing sensor is directed toward the other side of the vehicle body. The above-described oxygen-containing sensation is arranged obliquely with respect to the expansion tube by the method of measuring the crying machine; liter = the degree of freedom of the oxygen-containing arranging structure is greatly increased, and the invention of claim 6 of the present invention is If the oxygen sensor is installed in the first embodiment, the pipe diameter near the downstream end of the exhaust pipe is formed to be smaller than the diameter of the opening of the expanded pipe: The upper and lower ends of the above-mentioned expanded exhaust gas are inserted into the openings of the upper and lower end exhaust ducts. According to the above configuration of the present invention, the diameter of the vicinity of the opening in which the upper and lower end exhaust pipes are combined with the expansion pipe is formed to have a larger diameter than the diameter of the opening in the vicinity of the expansion pipe. The upper and lower ends of the above-mentioned expanded pipe are inserted into the opening of the upper and lower end exhaust pipes. Therefore, the above-mentioned pipe expansion and the upper and lower end exhaust pipes of the exhaust device can be easily combined. 115567.doc -10- 200823358 The invention of claim 7 of the present invention is characterized in that, in connection with the above-mentioned expansion, "the downstream end of the pipe system of the oxygen-containing sensor device is $ # s 1313 The opening portion is large, and the pipe diameter of the vicinity of the opening portion of the expansion pipe is the Φ of the C::r cruise exhaust pipe inserted in the vicinity of the downstream end exhaust pipe opening portion The above-mentioned opening of the end:: - the request item 8 of the present invention is provided on the exhaust pipe of the above-mentioned pipe expansion, and the pipe diameter system of the vicinity of the oxygen sensor device of the above-mentioned item 1 is formed into a heart. Opening of the road
,,... 边擴官之開口部附近之管押A 小，上述下游端排氣管道係插入於 κ為 之上述開口部内；且與 、上边擴吕之排氣下游端 $擴&結合之上游媳μ备；^、姿 開口部附近之管徑係形成為較上述擴 只吕、之 徑為大，上述擴管之排氣.&心相近之管 管道之上述開口部内 ^係插入於上述上游端排氣 根據本發明之上述構成 排易於結合上述擴管與上述 排乳裝置之上、下游端排氣管道。 乩 ==求項9之發明’係如請求項i之含 亡述含氧感測器係經由其座體而設置於上述 K r 、’〔座體與上述擴管係藉由液壓 體形成者。 乃式而一 本發明之請求項10之發明，係 如請求項⑽任-項之含氧感測器裝設構造微為具備 I15567.doc 200823358 根據本發明之上述構成， 一項之含氧感測器裝設構造 【實施方式】 可獲致具有如請求項1至9中 之功效之機車。 任 以下參照圖式’詳細說明本發明之實施方式。,,... The pipe A near the opening of the expansion is small, and the downstream exhaust pipe is inserted into the opening of the κ; and is combined with the downstream end of the exhaust of the upper side. The upstream diameter of the opening portion is formed to be larger than the diameter of the expanded portion, and the opening of the tube is similar to the opening of the tube. The above-mentioned constituent discharge according to the present invention is easily combined with the above-mentioned expansion pipe and the above-mentioned downstream and downstream exhaust pipes of the milk discharge device.乩==The invention of claim 9 is as follows: the oxygen sensor included in the request item i is provided in the above K r via the seat body, '[the seat body and the above-mentioned pipe expansion system are formed by the hydraulic body . The invention of claim 10 of the present invention is characterized in that the oxygen-containing sensor mounting structure of any one of the claims (10) is provided with I15567.doc 200823358 according to the above configuration of the present invention, an oxygen-containing sensation Detector mounting structure [Embodiment] A locomotive having the functions as claimed in claims 1 to 9 can be obtained. The embodiments of the present invention will be described in detail below with reference to the drawings.
圖1係具備本發明之含氧感測器裝設構造i之-機車之側 視圖'。圖1中雖顯示將本發明之含氧感測器裝設構造應用 於一速克達型機車±，但本發明並^限定應詩速克達型 機車，亦可為其他型式之機車，如打檔型機車，及動力車 輛。動力車輛係例如ATV(Au_terrain _心，全能越野 車）及雪地機動車輛等。 圖斤示|有本發明之含氧感測器裝設構造1之機車 5〇，具有：車頭51、踏板52、座塾部53、車輪54、引擎機 構5 5、及排氣裝置5 6。Μ _ 排乳I置56具有連通引擎機構55之 排氣出口之排氣管道57。 接著明 > 考圖2至圖6。目2係顯示本發明之含氧感測器 展λ構k 1之側視圖。圖3係顯示本發明之含氧感測器裝設 構& 1之擴大σ彳面圖。圖4係顯示本發明之含氧感測器裝設 構造1之含氧感測器3之裝設角度範圍圖。圖5係顯示本發 明另3氧感測益裝設構造1之側視圖。圖3及圖6(a)〜圖 6(d)係顯示本發明含氧感測器裝設構造丨中擴管2與上、下 游知排氣管道571，572結合方式之示意圖。 如圖2及圖3所示，本發明之含氧感測器裝設構造丨，主 要包含官徑（Β)較所欲裝設之排氣裝置％之排氣管道”之 管徑（Α)大且與排氣管道57不同體之擴管2、及含氧感測器 115567.doc -12 - 200823358 3。含氧感測器3之前端係感測部為偵測廢氣内含氧濃度， 使内、外側之含氧濃度差變大，以產生電壓。含氧感測器 3所送出的電壓值被傳送到電腦（圖中未示）後，電腦即根據 該電壓訊號判斷引擎燃燒狀態，並控制喷油嘴以修正空燃 比。 本發明之含氧感測器裝設構造！係藉由將含氧感測器3前 端之座體5結合在擴管2上’並使含氧感測器3前端之感測 部4伸入擴管2内部。含氧感測器3可藉由例如焊接之方式 結合在擴管2上’或藉由例如卡合或黏著或鎖合等方式結 合在擴管2上。之後，再將結合有含氧感測器3之擴管2置 於預先分離之上游端排氣管道571與下游端排氣管道仍之 間’並藉由焊接或卡纟或鎖合等方式加以結合。 如前所述’若以焊接之方式進行結合作業時，由於機車 之體積小以及焊搶之焊接有—定之角度的限制，因此若夢 =本發明之上述構成，即可先藉由例如焊接等將含氧感; ^ 3没置擴官2上’再於藉由例如焊接等將擴管2盥排氣管 道57結合前，視實際情況之需要而對暫時置於預先分離之 排氣管道57之上游端排氣管道571與下游端排氣管道Μ間 Ϊ擴官2作適當之轉動或移動調整，以易於桿接作業的進 仃，而使得作業容易並減少工時。 此外’由於㈣擴管2擴大了排氣氣流流路 氧感測器3之感測部4之邱八々w工 持排氣氣流流路之剖積:因此裝設後仍能保 能維持排氣氣流之流迷^月」之°1]面積大致相同，故 迷及順畅度不變、穩定控制空燃比之 115567.doc 13 200823358 目標值’以確保引擎之功率，且亦可防止排氣管道57内邻 產生異音。 如圖3之擴大剖面圖所示，本發明中可將下游端排氣管 以72之與擴管2結合之開口部…附近之管徑形成為較擴 管2之開口部22附近之管徑為大之形狀，以將擴管2之排氣 下游端插入於下游端排氣管道572之開口部574内。並且將 上游端排氣管道571之與擴管2結合之開口部573附近之管 徑係形成為較擴管2之開口部221附近之管徑為小，已將上 游端排氣管道571插入於擴管2之排氣上游端之開口部。 内。本發明藉由此種構成，可易於結合擴管2與排氣管道 57之上、下游端排氣管道571，572。 此外，如圖3及圖6(a)〜圖6(d)所示，本發明之含氧感測 器裝設構造1中之擴管2與上、下游端排氣管道571，572結 合之方式，可做各種變化。例如圖6(a)及圖6(b)所示，擴 官2之開口部21，22附近之管徑形成為較擴管2中央之管徑 為小，而與擴管2結合之上、下游端排氣管道571，572之開 口部573,574附近之管徑係形成為較擴管2之開口部21，22附 近之官徑為大，並且將擴管2之排氣上、下游端插入於 上、下游端排氣管道571，572之開口部573,574内後加以結 合〇 亦可例如圖6(c)所示，擴管2之開口部21，22附近之管徑 形成為杈擴官2中央之管徑為小，且可將上、下游端排氣 官道571，572插入於擴管2之開口部21，22内後加以結合。 此外，亦可例如圖6(d)所示，擴管2之開口部21，22附近 115567.doc -14- 200823358 之管徑形成為較擴管2中央之管徑為小，而與擴管2結合之 下游端排氣管道572之開口部574附近之管徑係形成為較擴 管2之開口部22附近之管徑為小，而將下游端排氣管道572 插入於擴管2之排氣下游端之開口部22内後加以結合；且 與擴管2結合之上游端排氣管道571之開口部573附近之管 徑係形成為較擴管2之開口部21附近之管徑為大，而將擴 管2之排氣上游端插入於上游端排氣管道571之開口部573 内後加以結合。 本發明藉由上述種種構成，皆可易於結合擴管2與排氣 管道57之上、下游端排氣管道571，572。 而本發明之含氧感測器裝設構造1，如圖3所示，較佳為 可將擴管2結合於排氣管道57後之管徑（B)擴大部分之長度 L ’大致等於含氧感測器3之感測部4之座體5之外徑ο之2 倍。 根據本發明之上述構成，藉由使擴管2結合於排氣管道 57後之管徑（B)擴大部分之排氣管道長度L，大致等於含氧 感測器之感測部4之座體5之外徑D之2倍，則更能使排氣效 率及引擎性能達到最佳。 此外’本發明之含氧感測器裝設構造1中，由於係將擴 管2與排氣管道57形成為不同體，因此擴管2可以選用導熱 係數較排氣管道57之材質之導熱係數低之材質所形成者， 而不須以與排氣管道57之材質之導熱係數相同之材質形 成。 藉此’可使由引擎排出之排氣所帶有之高熱較不易傳遞 115567.doc •15- 200823358 至含氧感測器3，可 熱量，而可減少高：'皿之排虱傳遞至含氧感測器之 氧感測器的壽命 心對含氧感測器之影響，延長含 所成角度位於：：：：器1 2—般在設置成其縱轴與水平面 狀態下，亦可進疒兩側起各1〇卩上之角度範圍内之 订測疋。因此如圖4所示， 感測器裝設構造！中，人，π 本兔明之含氧 1 Τ 合乳感測器2可在由擴營2之刘而％Fig. 1 is a side view of a locomotive having an oxygen-containing sensor mounting structure i of the present invention. Although FIG. 1 shows that the oxygen sensor mounting structure of the present invention is applied to a one-speed locomotive type locomotive, the present invention also defines a locomotive locomotive type locomotive, and may also be other types of locomotives, such as Geared locomotives, and powered vehicles. Power vehicles are, for example, ATV (Au_terrain_heart, all-round off-road vehicle) and snowmobiles. The locomotive 5 having the oxygen sensor mounting structure 1 of the present invention has a front end 51, a pedal 52, a seat portion 53, a wheel 54, an engine mechanism 55, and an exhaust unit 56. Μ _ The milk discharge I 56 has an exhaust duct 57 that communicates with the exhaust outlet of the engine mechanism 55. Then Ming > test Figure 2 to Figure 6. The item 2 shows a side view of the oxygen-containing sensor of the present invention. Fig. 3 is an enlarged σ彳 front view showing the oxygen sensor mounting device & 1 of the present invention. Fig. 4 is a view showing a range of installation angles of the oxygen-containing sensor 3 of the oxygen-containing sensor mounting structure 1 of the present invention. Fig. 5 is a side view showing the other three oxygen sensing profit installation structures 1 of the present invention. Fig. 3 and Fig. 6(a) to Fig. 6(d) are views showing the manner in which the expanded pipe 2 and the upper and lower exhaust pipes 571, 572 are combined in the oxygen sensor mounting structure of the present invention. As shown in FIG. 2 and FIG. 3, the oxygen-containing sensor installation structure of the present invention mainly comprises a diameter (官) of an exhaust pipe of a valve diameter (%) which is larger than a desired exhaust device. The tube 2 is different from the exhaust pipe 57, and the oxygen sensor 115567.doc -12 - 200823358 3. The front sensing portion of the oxygen sensor 3 detects the oxygen concentration in the exhaust gas. The difference between the oxygen concentration of the inner and outer sides is increased to generate a voltage. After the voltage value sent by the oxygen sensor 3 is transmitted to a computer (not shown), the computer judges the combustion state of the engine according to the voltage signal. And controlling the fuel injector to correct the air-fuel ratio. The oxygen sensor mounting structure of the present invention is constructed by combining the seat body 5 of the front end of the oxygen sensor 3 on the expansion tube 2 and making the oxygen sensing The sensing portion 4 at the front end of the device 3 extends into the inside of the expansion tube 2. The oxygen-containing sensor 3 can be bonded to the expansion tube 2 by, for example, welding, or combined by, for example, snapping or adhesive or locking. Expanding pipe 2. After that, the expansion pipe 2 combined with the oxygen sensor 3 is placed on the pre-separated upstream end exhaust pipe 571 and the downstream exhaust pipe. Between 'and by welding or snapping or locking, etc.. As mentioned above, 'If welding is used in combination, the size of the locomotive and the welding of the welding have a certain angle limit, Therefore, if the dream is the above-described configuration of the present invention, the oxygen-containing sensation can be first performed by, for example, welding; ^3 is not placed on the extension 2, and then the tube 2 is exhausted by the extension pipe 2, for example, by welding or the like. According to the needs of the actual situation, the exhaust pipe 571 and the downstream end exhaust pipe of the exhaust pipe 57 temporarily placed in the pre-separated exhaust pipe 57 are appropriately rotated or moved to facilitate the pole connection operation. In addition, the operation is easy and the working hours are reduced. In addition, since the (four) expansion pipe 2 expands the exhaust gas flow path, the sensing portion 4 of the oxygen sensor 3, the Qiu Bagua, the holding exhaust gas flow path Dissection: Therefore, after installation, the flow of the exhaust gas can be maintained. The area of the moon is almost the same, so the smoothness and the air-fuel ratio are stable. 115567.doc 13 200823358 Target value 'To ensure the power of the engine, and also prevent the adjacent production in the exhaust pipe 57 Different sound. As shown in the enlarged cross-sectional view of FIG. 3, in the present invention, the pipe diameter in the vicinity of the opening portion of the downstream end exhaust pipe 72 combined with the expansion pipe 2 can be formed as the pipe diameter near the opening portion 22 of the expansion pipe 2. In the large shape, the exhaust downstream end of the expansion pipe 2 is inserted into the opening 574 of the downstream end exhaust duct 572. Further, the pipe diameter in the vicinity of the opening portion 573 of the upstream end exhaust pipe 571 combined with the expansion pipe 2 is formed such that the pipe diameter near the opening portion 221 of the expansion pipe 2 is small, and the upstream end exhaust pipe 571 has been inserted. The opening of the upstream end of the exhaust pipe of the pipe 2 is expanded. Inside. According to the present invention, the expansion pipe 2 and the exhaust pipe 571, 572 above and downstream of the exhaust pipe 57 can be easily combined. Further, as shown in FIGS. 3 and 6(a) to 6(d), the expanded tube 2 in the oxygen-containing sensor mounting structure 1 of the present invention is combined with the upper and lower end exhaust ducts 571, 572. Ways can be made to change. For example, as shown in Fig. 6 (a) and Fig. 6 (b), the diameter of the vicinity of the opening portions 21, 22 of the expanded portion 2 is formed to be smaller than the diameter of the center of the expanded tube 2, and is combined with the expanded tube 2, The pipe diameter near the opening portions 573, 574 of the downstream end exhaust ducts 571, 572 is formed to be larger than the opening portion 21 of the expanded pipe 2, and the upper and lower ends of the exhaust pipe 2 are inserted into the upper and lower ends of the exhaust pipe 2 The openings 573, 574 of the upper and lower end exhaust ducts 571, 572 are combined and then combined, for example, as shown in Fig. 6 (c), the diameter of the opening 21, 22 near the opening 2 is formed as the center of the expansion 2 The pipe diameter is small, and the upper and lower end exhausting passages 571, 572 can be inserted into the openings 21, 22 of the expansion pipe 2 and then combined. In addition, as shown in FIG. 6(d), the diameter of 115567.doc -14-200823358 in the vicinity of the opening portions 21, 22 of the pipe expansion 2 is formed to be smaller than the pipe diameter in the center of the expansion pipe 2, and is expanded. The pipe diameter in the vicinity of the opening portion 574 of the combined downstream end exhaust pipe 572 is formed such that the pipe diameter near the opening portion 22 of the expanded pipe 2 is small, and the downstream end exhaust pipe 572 is inserted into the row of the expanded pipe 2 The opening portion 22 of the downstream end of the gas is coupled later; and the diameter of the vicinity of the opening 573 of the upstream end exhaust duct 571 combined with the expanded tube 2 is formed to be larger than the diameter of the opening 21 of the expanded tube 2 The exhaust upstream end of the expanded pipe 2 is inserted into the opening 573 of the upstream end exhaust duct 571 and combined. According to the present invention, it is possible to easily combine the expansion pipe 2 with the exhaust pipe 571, 572 above and downstream of the exhaust pipe 57. In the oxygen-containing sensor mounting structure 1 of the present invention, as shown in FIG. 3, it is preferable that the length L' of the enlarged portion of the pipe diameter (B) after the expansion pipe 2 is coupled to the exhaust pipe 57 is substantially equal to The outer diameter ο of the seat body 5 of the sensing portion 4 of the oxygen sensor 3 is twice. According to the above configuration of the present invention, the length L of the exhaust duct of the enlarged portion of the pipe diameter (B) after the expansion pipe 2 is coupled to the exhaust pipe 57 is substantially equal to the seat of the sensing portion 4 of the oxygen sensor. With 2 times the outer diameter D of 5, the exhaust efficiency and engine performance are optimized. In addition, in the oxygen-containing sensor mounting structure 1 of the present invention, since the expanded tube 2 and the exhaust duct 57 are formed in different bodies, the expanded tube 2 can be selected from the thermal conductivity of the material of the exhaust duct 57. The material formed by the low material is not necessarily formed of the same material as the material having the thermal conductivity of the material of the exhaust duct 57. By this, the high heat carried by the exhaust gas discharged from the engine is less likely to be transmitted. 115567.doc •15-200823358 to the oxygen sensor 3, the heat can be reduced, and the height can be reduced: The life of the oxygen sensor of the oxygen sensor affects the oxygen sensor, and the extended angle is located at::::1. Generally, when it is set to its vertical axis and horizontal plane, it can also enter订 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒 疒Therefore, as shown in Figure 4, the sensor is mounted!中,人,π The rabbit's oxygen contains 1 Τ The milk sensor 2 can be used in the expansion of 2 and Liu
之時，其縱軸與水平 夂^2之。彳面硯 10。以上之角产銘网& 目水+面兩側起各 ，作適當之轉動調整而設置。如此 可配合車體所裝載之其 氧感測器裝設構造i之自由周m地增加含 僻之自由度，而提昇作業性。 、卜〆如圖5所τ，本發明之含氧感測器裝設構造1，亦 =含氧感測器3之感測部4前端朝向排氣管道57中之排氣 氣流方向之方式’傾斜地設置含氧感測器3於擴管2上。如 此亦可配合車體所裝载之其他零件在必要時以含氧感測器 3之感測部4前端朝向排氣氣流方向之方式，而相對於擴管 115567.doc 16 1 4員斜地π又置各氧感測窃3，因此可大幅地增加含氧感測器 裝設構造1之自由度，而提昇作業性。 此外，圖7係顯示本發明具有一體成型之座體與擴管之 另 $氧感測益裝设構造之側視圖。如圖7所示，本發明 之含氧感測器裝設構造1，亦可將含氧感測器3之座體5與 擴管2藉由液壓成型之方式一體形成。如此可便利地將含 氧感測器3設置於擴管2上。 2 本發明之技術内容及技術特點巳揭示如上，然而熟悉本 200823358 項：術之人士仍可基於上述本發明之教示及揭示而作種種 不月離本發明精神之替換及修飾。因&，本發明之 圍應不限於實施例所揭示者，而應包括各種不背離本；^ 之替換及修飾，並為以下之巾請專利範圍所涵蓋。 【圖式簡單說明】 圖1係具備本發明之含氧感測器裝設構造之一機車之側 視圖。At that time, its vertical axis and horizontal 夂^2.彳面砚 10. The above-mentioned corners are made up of MING NET & eye water + sides, and are set for proper rotation adjustment. In this way, it is possible to increase the freedom of freedom in conjunction with the free circumference of the oxygen sensor mounting structure i mounted on the vehicle body, thereby improving workability. As shown in FIG. 5, the oxygen-containing sensor mounting structure 1 of the present invention also means that the front end of the sensing portion 4 of the oxygen-containing sensor 3 faces the direction of the exhaust gas flow in the exhaust duct 57. The oxygen-containing sensor 3 is disposed obliquely on the pipe expansion 2. In this way, it is also possible to match the other parts loaded on the vehicle body with the front end of the sensing portion 4 of the oxygen-containing sensor 3 toward the direction of the exhaust gas flow, if necessary, with respect to the expansion tube 115567.doc 16 1 4 obliquely The π is further provided with each oxygen sensing thief 3, so that the degree of freedom of the oxygen sensor mounting structure 1 can be greatly increased, and the workability is improved. Further, Fig. 7 is a side view showing the construction of the integrally formed seat body and the expanded oxygen-sensing structure of the present invention. As shown in Fig. 7, in the oxygen-containing sensor mounting structure 1 of the present invention, the seat body 5 of the oxygen-containing sensor 3 and the expansion tube 2 can be integrally formed by hydroforming. It is thus convenient to arrange the oxygen sensor 3 on the expansion tube 2. 2 The technical content and technical features of the present invention are disclosed above, but those skilled in the art can still make various alternatives and modifications to the spirit of the present invention based on the teachings and disclosures of the present invention. The present invention is not limited to the embodiments disclosed, but should include various alternatives and modifications without departing from the scope of the invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a side view of a locomotive having one of the oxygen sensor mounting structures of the present invention.
圖2係顯示本發明之含氧感測器裝設構造之側視圖。 圖3係顯不本發明之含氧感測器裝設構造之擴大剖面 圖 〇 圖4係顯示本發明之含氧感測器裝設構造之含氧感測器 之裝設角度範圍圖。 圖5係顯示本發明另一含氧感測器裝設構造之側視圖。 圖6(a)〜圖6(d)係顯示本發明含氧感測器裝設構造中擴 管與上、下游端排氣管道結合方式之示意圖。 圖7係顯示本發明具有一體成型之座體與擴管之另一含 氧感測器裝設構造之側視圖。 圖8係顯示一先前之機車之含氧感測器裝設構造。 圖9係顯示先前之機車之含氧感測器裝設構造之擴大剖 面圖。 【主要元件符號說明】 1 含氧感測器裝設構造 2 擴管 21 開口部 115567.doc -17- 200823358 22 開口部 3 含氧感測器 4 感測部 5 座體 50 機車 51 車頭 52 踏板 53 座墊部 54 車輪 55 引擎機構 56 排氣裝置 57 排氣管道 571 上游端排氣管道 572 下游端排氣管道 573 開口部 574 開口部 61 含氧感測器裝設構造 62 排氣管道 63 含氧感測器 64 感測部 65 引擎側排氣出口 D 外徑 L 長度 115567.doc -18-Fig. 2 is a side view showing the installation structure of the oxygen-containing sensor of the present invention. Fig. 3 is an enlarged cross-sectional view showing the mounting structure of the oxygen-containing sensor of the present invention. Fig. 4 is a view showing a range of mounting angles of the oxygen-containing sensor of the oxygen-containing sensor mounting structure of the present invention. Fig. 5 is a side view showing another oxygen sensor mounting structure of the present invention. Fig. 6 (a) to Fig. 6 (d) are schematic views showing the manner in which the expansion and the upstream and downstream end exhaust pipes are combined in the oxygen sensor mounting structure of the present invention. Fig. 7 is a side elevational view showing another oxygen-containing sensor mounting structure of the present invention having an integrally formed seat body and a pipe expansion. Figure 8 is a view showing the oxygen sensor mounting structure of a prior locomotive. Fig. 9 is an enlarged cross-sectional view showing the installation structure of the oxygen sensor of the prior locomotive. [Main component symbol description] 1 Oxygen sensor installation structure 2 Expansion pipe 21 Opening 115567.doc -17- 200823358 22 Opening 3 Oxygen sensor 4 Sensing part 5 Seat 50 Locomotive 51 Front 52 Pedal 53 Cushion portion 54 Wheel 55 Engine mechanism 56 Exhaust device 57 Exhaust pipe 571 Upstream exhaust pipe 572 Downstream exhaust pipe 573 Opening 574 Opening 61 Oxygen sensor installation structure 62 Exhaust pipe 63 Oxygen sensor 64 sensing part 65 engine side exhaust outlet D outer diameter L length 115567.doc -18-