200846067 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種廢氣淨化裝置，特別是在引擎之廢氣排 放流道中設置載置有觸媒之金屬載體，以淨化引擎廢氣的 置技術。 ^ 【先前技術】 為了迎合愈趨嚴格的廢氣排放標準，坊間業者皆會在機 _ 車及割草機等引擎之廢氣排放流道中設置載置有觸媒之金屬 載體;該觸媒通常含有鈀(Pd)、鉑(pt)、铑(Rh)等貴金屬元素， 其中Pd及Pt元素有利於將廢氣中有害的c〇&HC氧化成 ，害的C〇2及氏〇，且Rh元素有利於將廢氣中有害的N〇奴氮 氧化物)還原成無害的％及〇2，據以淨化引擎廢氣，進而減 輕廢氣對外界空氣品質的影響。 且知，上述金屬載體在傳統上係由一筒體内設置至少一 板材所製成，板材係由-平板或/及—波形板卷繞而成，該觸 φ媒係彼覆於板材上’且板材於筒體雙端各自形成可導引廢氣 =複數通孔，上心丨擎之廢氣排放流道包含有排氣管及消音 益，金屬載體可選擇設置於排氣管或消音器内，也可以同時 設置於排氣管及消音器内’使引擎麼氣通過載體之複數通 孔，促使廢氣與觸媒進行氧化及還原運作。 惟，上述傳統之金屬龍的通孔⑭狀氣路，致使 廢氣於進入載體之通孔後，會在無阻礙的狀況下谈速流出載 體外’造祕氣與觸媒之接觸時間無 / 亟需加BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust gas purifying apparatus, and more particularly to a technique of installing a metal carrier on which a catalyst is placed in an exhaust gas discharge passage of an engine to purify engine exhaust gas. ^ [Prior Art] In order to meet the increasingly stringent emission standards, the workshops will install metal carriers with catalysts in the exhaust gas discharge channels of engines such as cars and lawn mowers; the catalyst usually contains palladium. (Pd), platinum (pt), rhodium (Rh) and other precious metal elements, wherein Pd and Pt elements are beneficial to oxidize harmful c〇 & HC in the exhaust gas into harmful C〇2 and sputum, and the Rh element is favorable In order to reduce the harmful nitrogen and nitrogen in the exhaust gas, it is used to purify the engine exhaust gas, thereby reducing the influence of the exhaust gas on the external air quality. It is also known that the above-mentioned metal carrier is conventionally made by disposing at least one plate in a cylinder, and the plate is wound by a flat plate or/and a corrugated plate, and the contact φ medium is coated on the plate. The plate is formed at each end of the cylinder to guide the exhaust gas = a plurality of through holes, and the exhaust gas discharge passage of the upper core includes an exhaust pipe and a sound-eliminating effect, and the metal carrier can be optionally disposed in the exhaust pipe or the muffler. It can also be installed in the exhaust pipe and the muffler at the same time to make the engine pass through the plurality of through holes of the carrier to promote the oxidation and reduction operation of the exhaust gas and the catalyst. However, the above-mentioned conventional metal dragon's through-hole 14-shaped gas path causes the exhaust gas to enter the through hole of the carrier, and will flow out of the carrier without any hindrance. 'The contact time between the secret gas and the catalyst is not / 亟Need to add
' 以改善。 κ J 5 200846067 【發明内容】 本發明之目的旨在提供一種觸媒裝置，尤其是將載置有 觸媒之金屬載體的複數通孔設置成曲線狀氣路，並於氣路中 設置可供廢氣膨脹之空間，以延遲廢氣的流速，並延長廢氣 於載體内滯留的時間，進而提升觸媒淨化廢氣的效率。 為達上述之目的，本發明之觸媒裝置，包含： 一載置觸媒用之金屬載體，設於一廢氣流道之一上游側 與一下游侧之間，且載體上具相間隔之一進氣端及一排氣 • 端，進氣端能導引上游側的廢氣進入載體内，排氣端能導引 載體内的廢氣排放至下游侧；且 至少一膨脹室，設於載體之進氣端與排氣端之間，以連 通載體之進氣端與排氣端間的廢氣通路，並導引進氣端的廢 氣迂流於載體内與膨脹室之間。 除此之外，本發明也包含： 一前套筒與一後套筒，能結合成該載置觸媒用之金屬載 體； * 該膨脹室係為複數，包含有一第一膨脹室及一第二膨脹 室； 該第一膨脹室形成於後套筒内，經由載體而與進氣端相 連通，以導引進氣端的廢氣迂流於載體内與第一膨脹室之 間；且 該第二膨脹室形成於前套筒内，經由載體而連通於第一 膨脹室與排氣端之間，以導引迂流於載體内與第一膨脹室之 間的廢氣，再次迂流於第二膨脹室、載體及排氣端之間。 6 4 200846067 ,^再加詳述本發明，併予列舉出較佳實施例， 请配合糾目式叫細制如魏： ⑪例 【實施方式】 請參閱圖1所示 說明本發明之觸媒裝 ’揭示出本發明第一款實施例之剖示圖 置，包含：' improving. κ J 5 200846067 SUMMARY OF THE INVENTION The object of the present invention is to provide a catalyst device, in particular, a plurality of through holes for a metal carrier on which a catalyst is placed are arranged as a curved gas path, and are provided in the gas path. The space for the expansion of the exhaust gas is to delay the flow rate of the exhaust gas and prolong the residence time of the exhaust gas in the carrier, thereby improving the efficiency of the catalyst to purify the exhaust gas. For the above purposes, the catalyst device of the present invention comprises: a metal carrier for carrying a catalyst, disposed between an upstream side and a downstream side of an exhaust gas flow path, and having one of the spaces on the carrier An intake end and an exhaust end, the intake end can guide the exhaust gas on the upstream side into the carrier, the exhaust end can guide the exhaust gas in the carrier to be discharged to the downstream side; and at least one expansion chamber is disposed in the carrier Between the gas end and the exhaust end, the exhaust gas passage between the inlet end and the exhaust end of the carrier is communicated, and the exhaust gas guided to the intake end flows between the carrier and the expansion chamber. In addition, the present invention also includes: a front sleeve and a rear sleeve that can be combined to form the metal carrier for loading the catalyst; * the expansion chamber is plural, including a first expansion chamber and a first a second expansion chamber; the first expansion chamber is formed in the rear sleeve and communicates with the intake end via the carrier to guide the exhaust gas at the intake end to flow between the carrier and the first expansion chamber; and the second The expansion chamber is formed in the front sleeve and communicates between the first expansion chamber and the exhaust end via a carrier to guide the exhaust gas flowing between the carrier and the first expansion chamber, and again turbulent in the second expansion Between the chamber, the carrier and the exhaust end. 6 4 200846067 , ^ further detailed description of the present invention, and to illustrate the preferred embodiment, please cooperate with the eye-catching type called fine system such as Wei: 11 cases [Embodiment] Please refer to Figure 1 to illustrate the catalyst of the present invention Included 'disclosed a sectional view of the first embodiment of the present invention, comprising:
載置觸媒用之金屬載體1，設於-廢氣流道5之-上游 52之間’且载體1上設有相間隔之-進氣 纟虱‘22’進氣端21能導引上游侧51的廢氣進入 ·-内，排氣端22能導引載體1内的廢氣排放至下游侧 至少一膨脹室3，設於載體1之進氣端21與排氣端22 ,、、連通载體1之進氣端21與排氣端,22間的廢氣通路， 亚導引進氣端21的廢氣迂流於載體1内與膨脹室3之間。 在更加具體的實施上，本發明也包含： 上述金屬載體1係由一筒體]〇内設置至少一板材2所製 成，該板材2係由一平板27(如圖7所示）或一波形板28 (如 圖3所示）卷繞而成’或者亦可由平板27及波形板28卷繞 而成(如圖8所示）；該觸媒是為鈀（Pd)、鉑（Pt)、铑（Rh)等貴 金屬元素’且觸媒至少可披覆於板材2上，當然亦可附加披 覆於板材2及筒體10内壁上；同時，上述進氣端21與排氣 端22之間至少經由板材2相間隔，使進氣端21與排氣端22 各自成為導引廢氣用之複數通孔41、42。 上述進氣端21及排氣端22係設於板材2之一尾端2b， 上述膨脹室3係連通於板材2之一前端2a ;上述廢氣流道5 7 200846067 係形成於一消音器6之一消音室60内，上游侧51係為一介 於消音室60之一廢氣入口 61與載體1進氣端21之間的前置 集壓室62，且下游侧52係為一介於载體1排氣端22與消音 室60之一廢氣出口64之間的後置集壓室63。 上述消音室60内設置一第一隔板71、一第二隔板72及 一第三隔板73，第一隔板71間隔於前置集壓室62與後置集 壓室63之間，第二隔板72間隔於前置集壓室62與膨脹室3 之間，第三隔板73間隔於膨脹室3與後置集壓室63之間； _ 同時，上述廢氣入口 61與引擎之廢氣排放端相銜接，廢氣出 口 64與外界大氣相通。 藉由上述構件之組成，可供據以實施本發明，特別是在 引擎啟動運轉後’引擎所產生的廢氣會經由消音室6〇之廢氣 入口 61及前置集壓室62導入載體1的進氣端21 (如圖1所 示）’經由複數通孔41導引而通過載體1内之板材2，使廢氣 與板材2上之觸媒進行氧化及還原的運作，以淨化廢氣；同 時，廢氣會由複數通孔41導入膨脹室3内，致使廢氣於膨脹 ⑩ 室3内重新混合，並經由複數通孔42導引而再次通過載體1 内之板材2,促使廢氣與板材2上之觸媒再次進行氧化及還原 的運作，以進一步淨化廢氣；隨後，廢氣會由複數通孔42導 引至排氣端22，並由後置集壓室63導引至廢氣出口 64，以 排放至外界大氣；據此，將載體1之複數通孔41及42設置 成曲線狀氣路，並於氣路中設置可供廢氣膨脹之膨脹室3，以 延遲廢氣的流速，並延長廢氣於載體1内滯留的時間，進而 提升觸媒淨化廢氣的效率。 請參閱圖2所示，揭示出本發明第二款實施例之剖示圖， 8 200846067 說明上述膨脹室3係為複數，可區分為一第一膨服室3i及一 第二膨脹室32，設於载體！之進氣端23與排氣端24之間， 以連通載體1之進氣端23與排氣端24間的廢氣通路，並導 引進氣端23的廢氣it流於載體！内與第一及第二膨脹室3卜 32之間；上述進氣端23及第二膨脹室32係設於板材2之尾 端2b，上述排氣端24及第-膨脹室31係設於板材2之前端 2a，且第一膨脹室31對應進氣，端23及第二膨脹室32，第二 膨脹室32對應第一膨脹室31及排氣端24 ;上述消音室内: ⑩置一第一隔板74、一第二隔板75、一第三隔板％及一第四 隔板77;第一隔板74間隔於前置集壓室65與第二膨脹室 之間，第一隔板75間隔於第二膨脹室32與後置集壓室的之 間，第三隔板76間隔於前置集壓室65與第一膨脹室31之間， 第四隔板77間隔於第一膨脹室31與後置集壓室％之間；同 時，第一膨脹室及第二膨脹室32内各自設至少一多孔板8 及80,間隔於載體i端面與消音室6〇内壁間，其餘構件組成 係等同於上述第一款實施例。 • 藉由上述，在引擎啟動運轉後，引擎所產生的廢氣會經 由廢氣入口 61及前置集壓室65導入载體i的進氣端23 (如 圖1所示）’經由複數通孔43導引而通過載體i内之板材2， 使廢氣2板材2上之觸媒進行氧化及還原的運作’以淨化廢 氣；同時，廢氣會由複數通孔43導入第一膨脹室31内，使 廢氣於第-膨脹室31内重新混合，期間會受到多孔板8阻稽 而延遲廢氣的流速，並於廢氣通過多孔板8之複數氣孔81 後，再，由複數通孔44導引而再次通過載體i内之板材2， 致使廢氣與板材2上之觸媒再次進行氧化及還原的運作，以 9 200846067 再次淨化廢氣；隨後，廢氣會由複數通孔44導引至第二臉账 室32内’使廢氣於第二膨服室32内再次重新混合，期間备 再次受到多孔板80阻擋而延遲廢氣的流速，並於廢氣通過^ 孔板80之複數氣孔82後，再經由複數通孔45導引而又一欠 通過載體1内之板材2,致使廢氣與板材2上之觸媒又一次進 行氧化及還原的運作，以進一步淨化廢氣，並使廢 由 數通孔45導引至排氣端24 ’經由後置集壓室66^廢氣出口The metal carrier 1 for carrying the catalyst is disposed between the - upstream 52 of the exhaust gas flow path 5 and the carrier 1 is provided with a spacing - the intake port '22' of the intake end 21 can guide the upstream The exhaust gas of the side 51 enters the inner side, and the exhaust end 22 can guide the exhaust gas in the carrier 1 to be discharged to at least one expansion chamber 3 on the downstream side, and is disposed at the intake end 21 and the exhaust end 22 of the carrier 1, and is connected to each other. The exhaust gas passage between the intake end 21 and the exhaust end 22 of the body 1 and the exhaust gas of the sub-guided intake end 21 flow between the inside of the carrier 1 and the expansion chamber 3. In a more specific implementation, the present invention also includes: the metal carrier 1 is made of a cylinder 2 provided with at least one sheet 2, which is composed of a flat plate 27 (as shown in FIG. 7) or a The corrugated plate 28 (shown in FIG. 3) is wound up or may be wound by a flat plate 27 and a corrugated plate 28 (as shown in FIG. 8); the catalyst is palladium (Pd) or platinum (Pt). a noble metal element such as rhodium (Rh) and a catalyst may be coated on the sheet 2 at least, and may be additionally coated on the inner wall of the sheet 2 and the cylinder 10; at the same time, the inlet end 21 and the exhaust end 22 At least the plates 2 are spaced apart from each other, and the intake end 21 and the exhaust end 22 are each a plurality of through holes 41 and 42 for guiding the exhaust gas. The intake end 21 and the exhaust end 22 are disposed at one end 2b of the sheet material 2, and the expansion chamber 3 is connected to one of the front ends 2a of the sheet material 2; the exhaust gas passage 5 7 200846067 is formed in a muffler 6 In the muffler chamber 60, the upstream side 51 is a pre-collection chamber 62 interposed between one of the exhaust chambers 61 of the muffler chamber 60 and the intake end 21 of the carrier 1, and the downstream side 52 is a row of carriers 1 A rear header chamber 63 between the gas end 22 and one of the exhaust gas outlets 64 of the muffler chamber 60. A first partition 71, a second partition 72 and a third partition 73 are disposed in the muffler chamber 60. The first partition 71 is spaced between the front gathering chamber 62 and the rear collecting chamber 63. The second partition plate 72 is spaced between the front collecting chamber 62 and the expansion chamber 3, and the third partition plate 73 is spaced between the expansion chamber 3 and the rear collecting chamber 63; _ meanwhile, the exhaust gas inlet 61 and the engine The exhaust gas discharge ends are connected, and the exhaust gas outlet 64 is open to the outside atmosphere. The composition of the above-mentioned components can be used to implement the present invention. In particular, after the engine is started, the exhaust gas generated by the engine is introduced into the carrier 1 through the exhaust gas inlet 61 and the front pressure collecting chamber 62 of the muffler chamber 6 . The gas end 21 (shown in FIG. 1) is guided through the plurality of through holes 41 to pass through the sheet 2 in the carrier 1 to oxidize and reduce the exhaust gas and the catalyst on the sheet 2 to purify the exhaust gas; The plurality of through holes 41 are introduced into the expansion chamber 3, so that the exhaust gas is remixed in the expansion chamber 3, and is guided through the plurality of through holes 42 to pass through the sheet 2 in the carrier 1 to promote the catalyst on the exhaust gas and the sheet 2. The oxidation and reduction operations are performed again to further purify the exhaust gas; subsequently, the exhaust gas is guided by the plurality of through holes 42 to the exhaust end 22, and is guided by the post-collector chamber 63 to the exhaust gas outlet 64 to be discharged to the outside atmosphere. According to this, the plurality of through holes 41 and 42 of the carrier 1 are arranged as a curved gas path, and an expansion chamber 3 for expanding the exhaust gas is disposed in the gas path to delay the flow rate of the exhaust gas and prolong the exhaust gas in the carrier 1 Time, and then improve the catalyst Efficiency of the exhaust gas. Referring to FIG. 2, a cross-sectional view of a second embodiment of the present invention is disclosed. 8 200846067 illustrates that the expansion chamber 3 is plural and can be divided into a first expansion chamber 3i and a second expansion chamber 32. Set in the carrier! Between the intake end 23 and the exhaust end 24, the exhaust passage between the intake end 23 and the exhaust end 24 of the carrier 1 is communicated, and the exhaust gas from the inlet end 23 is introduced to the carrier! Between the first and second expansion chambers 3b, 32; the inlet end 23 and the second expansion chamber 32 are disposed at the tail end 2b of the sheet material 2, and the exhaust end 24 and the first expansion chamber 31 are The front end 2a of the sheet 2, and the first expansion chamber 31 corresponds to the intake, the end 23 and the second expansion chamber 32, and the second expansion chamber 32 corresponds to the first expansion chamber 31 and the exhaust end 24; the above-mentioned muffler chamber: 10 a partition 74, a second partition 75, a third partition % and a fourth partition 77; the first partition 74 is spaced between the pre-collection chamber 65 and the second expansion chamber, the first partition The plate 75 is spaced between the second expansion chamber 32 and the rear collection chamber, the third partition 76 is spaced between the front surge chamber 65 and the first expansion chamber 31, and the fourth partition 77 is spaced apart from the first Between the expansion chamber 31 and the rear collection chamber %; at the same time, each of the first expansion chamber and the second expansion chamber 32 is provided with at least one perforated plate 8 and 80 spaced between the end surface of the carrier i and the inner wall of the muffler chamber 6〇. The remaining component components are equivalent to the first embodiment described above. • By the above, after the engine is started, the exhaust gas generated by the engine is introduced into the intake end 23 of the carrier i (shown in FIG. 1) via the exhaust inlet 61 and the pre-collection chamber 65 'via the plurality of through holes 43 Guided to pass through the sheet 2 in the carrier i to oxidize and reduce the catalyst on the sheet 2 of the exhaust gas 2 to purify the exhaust gas; at the same time, the exhaust gas is introduced into the first expansion chamber 31 through the plurality of through holes 43 to make the exhaust gas After re-mixing in the first expansion chamber 31, the flow rate of the exhaust gas is delayed by the perforated plate 8, and after the exhaust gas passes through the plurality of pores 81 of the perforated plate 8, it is guided by the plurality of through holes 44 to pass through the carrier again. The sheet 2 in i causes the exhaust gas and the catalyst on the sheet 2 to be oxidized and reduced again, and the exhaust gas is again purified by 9 200846067; subsequently, the exhaust gas is guided by the plurality of through holes 44 into the second face chamber 32' The exhaust gas is again re-mixed in the second expansion chamber 32, and is again blocked by the perforated plate 80 to delay the flow rate of the exhaust gas, and after the exhaust gas passes through the plurality of air holes 82 of the orifice plate 80, and then guided through the plurality of through holes 45. And another owe through the carrier 1 The sheet 2 causes the exhaust gas and the catalyst on the sheet 2 to be oxidized and reduced again to further purify the exhaust gas, and guides the waste from the number of through holes 45 to the exhaust end 24' via the post-collector chamber 66^ Exhaust gas outlet
64排放至外界。 X • 請參閱圖3所示，揭示出本發明第三款實施例之立體分 解圖，並配合圖4說明上述筒體10亦能夠製成一前套筒^ 與一後套筒12,能結合成該載置觸媒用之金屬載體la，且載 體la包含於前、後套筒11及12之間設置至少一板材2 ;上 述進氣端25係設於板材2之别端2a，且排氣端％係設於板 材2之尾端2b ;前套筒11内形成一前容置槽13 (配合圖4a 所示），後套筒12内形成一與前容置槽13相通的後容置槽14 (配合圖4b所示）’該板材2係設於前容置槽13及後容置槽 • 14 内。 上述第一膨脹室33係形成於後套筒12内，與後容置槽 Η相通，且第一膨脹室33經由載體la而與進氣端乃相連通， 以導引進氣端25的廢氣迁流於載體1&内與第一膨脹室％之 間，上述第二膨脹室34係形成於前套筒丨丨内，與前容置槽 13相通，且第二膨脹室34經由載體la而連通於第一膨脹室 33與排氣端26之間，以導引运流於载體ia内與第一膨脹室 33之間的廢氣，再次迂流於第二膨脹室34、載體u及排氣 端26之間。 200846067 义士述後套筒12上對應排氣端26的位置設一排氣口 16， 套筒η上對應進氣端25的位置設一進氣口 15 ·，上述前套 同π與後套筒12的結合面之間，設有相欲合之一楔形凸部 Π及一楔形凹部18 (如圖3、圖4a及圖 4b所示）。 、a上述廢氣流道5係形成於一排氣管9内（如圖5所示）， 上游係為連通引擎之廢氣排放端與載體^之進氣端25 的排氣官9前段91，且下游側54係為連通載體la之排氣端 26與消音器及外界大氣的排氣管9後段92,其餘構件組成係 ⑩ 等同於上述第二款實施例。 藉，上述，在引擎啟動運轉後，引擎所產生的廢氣會經 由排氣官9前段91導引至進氣端25 (如圖5所示），經由複 數通孔43導引而通過載體〗内之板材2，使廢氣與板材2上 之觸媒進行氧化及還原的運作，以淨化廢氣；同時，廢氣會 由複數通孔43導入第一膨脹室33内，使廢氣於第一膨脹室 33内重新混合，並經由複數通孔44導引而再次通過載體i 内之板材2,致使廢氣與板材2上之觸媒再次進行氧化及還原 # 的運作，以再次淨化廢氣；隨後，廢氣會由複數通孔44導引 至第二膨脹室34内，使廢氣於第二膨脹室34内再次重新混 合’並經由複數通孔45導引而又一次通過載體1内之板材2， 致使廢氣與板材2上之觸媒又一次進行氧化及還原的運作， 以進一步淨化廢氣，並使廢氣經由複數通孔45導引至排氣端 26及排氣管9後段92，以經由消音器排放至外界。 請參閱圖6所示’揭示出本發明第四款實施例之剖示圖， 說明上述設置載體la之廢氣流道5，係形成於一消音器仍之 一消音室60b内，且消音室60b内設置至少一隔板7間隔於 11 200846067 上游侧55與下游侧56之間，該載體la是穿設於隔板7上； 上游側55係為一介於消音室60b之一廢氣入口 61b與載體la 進氣端25之間的前置集壓室62b，且下游侧56係為一介於載 體la排氣端26與消音室6〇b之一廢氣出口 64b之間的後置 集壓室63b;該廢氣入口 61b連通引擎之廢氣排放端，且廢氣 出口 64b連通外界大氣，其餘構件組成及實施方式係等同於 上述弟二款實施例。 然而，以上僅為本發明之較佳實施例而已，並非用以限 疋本發明之申請專利範圍，凡其他未脫離本發明所揭示之精 神下而完成的等效修飾或置換，均應包含於後述之申請專利 範園内。 【圖式簡單說明】 圖1 ·揭示本發明第一款實施例之剖示圖。 圖2 ·揭示本發明第二款實施例之剖示圖。 圖3 ·揭示本發明第二款實施例之立體分解圖。 圖4·揭示本發明弟二款實施例之剖示圖。 圖4a :揭示本發明之前套筒的剖示圖。 圖4b :揭示本發明之後套筒的剖示圖。 圖5 :揭示圖4之使用狀態圖。 圖6 ··揭示圖4之另一使用狀態圖。 圖7:揭示本發明之筒體的剖示圖。 圖8 ·揭示本發明之另一筒體的剖示圖。 【主要元件符號說明】 1、la ....... 載體 12 20084606764 emissions to the outside world. X. Referring to FIG. 3, an exploded perspective view of a third embodiment of the present invention is disclosed. Referring to FIG. 4, the cylinder 10 can also be formed into a front sleeve and a rear sleeve 12, which can be combined. The metal carrier la for the catalyst is placed, and the carrier la includes at least one plate 2 disposed between the front and rear sleeves 11 and 12; the inlet end 25 is disposed at the other end 2a of the plate 2, and is arranged The end of the gas is provided at the end 2b of the sheet 2; a front receiving groove 13 is formed in the front sleeve 11 (shown in Fig. 4a), and a rear space communicating with the front receiving groove 13 is formed in the rear sleeve 12. The groove 14 (shown in Fig. 4b) is disposed in the front receiving groove 13 and the rear receiving groove 14 . The first expansion chamber 33 is formed in the rear sleeve 12, communicates with the rear accommodating groove, and the first expansion chamber 33 communicates with the intake end via the carrier la to guide the exhaust gas of the intake end 25. Between the carrier 1& and the first expansion chamber, the second expansion chamber 34 is formed in the front sleeve ,, communicates with the front accommodating groove 13, and the second expansion chamber 34 communicates via the carrier la Between the first expansion chamber 33 and the exhaust end 26, the exhaust gas flowing between the carrier ia and the first expansion chamber 33 is guided to flow again to the second expansion chamber 34, the carrier u, and the exhaust gas. Between ends 26. 200846067 The position of the corresponding exhaust end 26 of the sleeve 12 is set to an exhaust port 16 , and the position of the sleeve η corresponding to the intake end 25 is provided with an air inlet 15 ·, the front sleeve is the same as the π and the rear sleeve Between the joint faces of 12, there is a wedge-shaped projection Π and a wedge-shaped recess 18 (shown in Figures 3, 4a and 4b). a, the exhaust gas flow path 5 is formed in an exhaust pipe 9 (as shown in FIG. 5), and the upstream is a front end 91 of the exhausting officer 9 that communicates with the exhaust end of the engine and the intake end 25 of the carrier. The downstream side 54 is a rear end 92 of the exhaust pipe 9 that communicates with the exhaust end 26 of the carrier la and the muffler and the outside atmosphere. The remaining component system 10 is equivalent to the second embodiment described above. By the above, after the engine is started, the exhaust gas generated by the engine is guided to the intake end 25 (shown in FIG. 5) via the front section 91 of the exhausting officer 9, and is guided through the plurality of through holes 43 to pass through the carrier. The sheet 2 is used to oxidize and reduce the exhaust gas and the catalyst on the sheet 2 to purify the exhaust gas; at the same time, the exhaust gas is introduced into the first expansion chamber 33 through the plurality of through holes 43 to allow the exhaust gas to flow into the first expansion chamber 33. Remixing and guiding through the plurality of through holes 44 to pass through the sheet 2 in the carrier i again, so that the exhaust gas and the catalyst on the sheet 2 are again oxidized and reduced to re-purify the exhaust gas; subsequently, the exhaust gas will be plural The through hole 44 is guided into the second expansion chamber 34 to re-mix the exhaust gas in the second expansion chamber 34 and is guided through the plurality of through holes 45 to pass through the sheet 2 in the carrier 1 again, thereby causing the exhaust gas and the sheet 2 The catalyst is again subjected to an oxidation and reduction operation to further purify the exhaust gas, and the exhaust gas is guided to the exhaust end 26 and the exhaust pipe 9 rear section 92 via the plurality of through holes 45 to be discharged to the outside via the muffler. Referring to FIG. 6 , a cross-sectional view of a fourth embodiment of the present invention is disclosed, illustrating that the exhaust gas flow path 5 of the above-mentioned carrier la is formed in a silencer 60b of a muffler, and the muffler chamber 60b The at least one partition plate 7 is disposed between the upstream side 55 and the downstream side 56 of the 2008 200846067. The carrier la is disposed on the partition plate 7; the upstream side 55 is an exhaust gas inlet 61b and a carrier interposed between the muffler chamber 60b. a front gathering chamber 62b between the intake end 25, and the downstream side 56 is a post-collection chamber 63b between the exhaust end 26 of the carrier la and the exhaust outlet 64b of the muffler chamber 6〇b; The exhaust gas inlet 61b communicates with the exhaust gas discharge end of the engine, and the exhaust gas outlet 64b communicates with the outside atmosphere. The remaining components and embodiments are equivalent to the above two embodiments. However, the above are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and all equivalent modifications or substitutions may be included without departing from the spirit of the invention. The patent application garden described later. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a cross-sectional view showing a first embodiment of the present invention. Figure 2 is a cross-sectional view showing a second embodiment of the present invention. Figure 3 is a perspective exploded view showing a second embodiment of the present invention. Figure 4 is a cross-sectional view showing two embodiments of the present invention. Figure 4a: A cross-sectional view of the sleeve prior to the present invention. Figure 4b: A cross-sectional view of the sleeve after the present invention is disclosed. Fig. 5 is a view showing the state of use of Fig. 4. Figure 6 · Reveals another usage state diagram of Figure 4. Figure 7: A cross-sectional view showing the barrel of the present invention. Figure 8 is a cross-sectional view showing another cylinder of the present invention. [Description of main component symbols] 1. la....... Carrier 12 200846067
10 …- …筒體 11 —- 荊套同 12 -… …後套筒 13 …- …前容置槽 14 …- …後容置槽 15 …· …進氣口 16 …· •…排氣口 17 …- …凸部 18 -… … 凹部 2 …- — 板材 2卜 23、25 -… •…進氣端 22、24、26 …· •…排氣端 27 …· •…平板 28 …· …波开>板 2a …· •…前端 2b …· -…尾端 3 …· …-膨脹室 31、33 …第一膨脹室 32、34 …· -…第二膨脹室 41、42、43 …· -…通孔 44、45 …· -…通孔 5 …· -…廢氣流道 51 、 53 、 55 … 上游侧 52、54、56 … 下游侧 6、6b —— -…消音器 13 200846067 6〇、60b -… — 消音室 61、61b -… …廢氣入口 62 > 62b > 65 — 一-前置集壓室 63、63b、66 — 後置集壓室 64、64b … —- 廢氣出口 7 —— — 隔板 71、74 -… — 弟 板 72、75 -… — 弟^一 m板 73 、 76 -… …弟—隔板 77 …- — 弟四Pm板 8、80 … …多孔板 81、82 … …氣孔 9 …· |…排氣管 91 …· •…前段 92 …· •…後段10 ...- ...barrel 11 —- 荆套同12 -... rear sleeve 13 ...- ... front accommodating groove 14 ...- ... rear accommodating groove 15 ...· ... intake port 16 ...· •... vent 17 ...- ... convex portion 18 - ... recess 2 ... - - sheet 2 2 23, 25 - ... • ... intake end 22, 24, 26 ... ... • ... exhaust end 27 ... · • ... flat 28 ... ... Wave opening > board 2a ...· •... front end 2b ...· -... tail end 3 ...· ... - expansion chambers 31, 33 ... first expansion chambers 32, 34 ... ... - second expansion chambers 41, 42, 43 ... · -...through hole 44,45 ...· -...through hole 5 ...· -...exhaust flow path 51 , 53 , 55 ... upstream side 52 , 54 , 56 ... downstream side 6, 6b —— -... silencer 13 200846067 6 〇, 60b -... — muffler chamber 61, 61b - ... exhaust gas inlet 62 > 62b > 65 - one - pre-collector chamber 63, 63b, 66 - post-collector chamber 64, 64b ... - exhaust gas outlet 7 —— — baffle 71, 74 -... — brother board 72, 75 -... — brother ^ a m board 73 , 76 - ... brother - partition 77 ... - - brother four Pm board 8, 80 ... perforated board 81, 82 ... Stomatal 9 ... · | ... exhaust pipe 91 ... · • ... 92 ... · • ... anterior posterior segment