475027 經濟部智慧財產局員工消費合作社印製 A7 -------— B7 五、發明說明（1 ) 發明背景· 發明之技術領域 倾明係有關-種具蜂窩狀結構之催化劑載體，其係 用於清理來自内燃引擎之廢氣。廢氣可以流動方向流經催 化』載且催化劑載體於流動方向連續地具有第一區域 及第二區域。此型式之催化劑載體係特別用於清理機動車 輛内之引擎廢氣。其可自化學材料或金屬片產生。 基於許多家對廢氣之逐漸嚴格之法規，用以清理廢氣 之催化轉化器需被更特別地用於機動車輛之内燃引擎及此 等引擎之操作方式。 當清理火星點燃引擎之廢氣時，已知係使用具每單位 體積儘可能低之熱容量之第一區域，如此，此區域被快速 加熱，引起催化及放熱反應，且經由因此產生之熱能，加 熱更下游之催化轉化器部份，以降低冷啟始相内之污染物 之釋出。此型式之催化轉化器之例子係描述於國際公告 WO 92/02716號案、美國專利第5,549,873號案及公告之歐 洲專利第EP 0 705 962 A1號案。 一種清理來自迪塞爾引擎或稱為貧燃燒引擎之技術"思 想被描述於，例如，國際公告第W〇 99/58827號案。迪塞 爾引擎及貧燃燒引擎係以相當過量之空氣操作，且比化學 計量操作期間明顯較低之溫度於廢氣中產生。國際公告第 WO 99/58827號案描述催化轉化器，於引擎冷啟始後快速 達其操作溫度，且於具較低廢氣溫度之其後相中非常缓慢 地冷卻。此文獻中所述之催化轉化器可能於流動方向分成 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） I--------^---------線！ (請先閱讀背面之注意事項V填寫本頁) 丨 4/3U2/ 五、發明說明（2 數個區域，每單位體積具有特別高之熱 設於具低熱容量之第-區域下游。 £域破 ，1 =、高型式Γ引擎（其現今係逐漸重要）包含内燃燒引擎 …人於與氣態燃料操作。所用之氣態燃料特別是甲 拉因為大量之含此煙之氣體可獲得。此型式之氣體引㈣ 特別被用於卡車及巴士。 ” 一但是，上述結構不能肋易轉化成此型式之氣體引擎 力口方面’此型式之氣體引擎係以不同於一般駕駛週期之 :歇週期麵作’特別是相較於其它引擎，未被間斷之操作 時間被延長。再者，當氣體引擎操作時，氣態燃料一般係 不完全燃燒，結果最高之烴濃度於廢氣中產生。相當低溫 度之高空氣含量冷卻操作中之廢氣。因此，催化活性轉化 时被配置於接近此引擎，如此，於最短之可能時間後其達 其熄火（light-off)溫度。 可 訂 線 但疋，氣體引擎之廢氣具最高之氫濃度。若此等氫濃 度與催化/舌性表面接觸，高放熱反應發生。此放熱反應 使溫度最高達1200°C。此高溫導致催化劑載體之增加腐 經濟部智慧財產局員工消費合作社印製 特別是基於動態承載催化劑載體，破裂會形成，其促 進腐蝕現像之增生，且最終導致載體結構之失敗。 催化劑載體之結構及構造之進一步方面係内燃燒引擎 已被起始後立即之熄火性能。基於使催化劑載體加熱至廢 氣内污染物之催化轉化於最短可能時間内發生之溫度，已 知之催化劑載體已被分成，例如，數區域，第一上游區域 本纸張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐） 發明說明（3 ) 具有比下游提供之區域更低之熱容量。以此方式，此第一 區域已被非常快速地加熱，因此起始放熱反應。於催化轉 化期間釋出之熱能亦幫助下游區域之加熱。再者，已知較 低熱容量可藉由使用低厚度之金屬片達成。但是，此等薄 片材係對溫度峰值具高度敏感性，其可於廢氣内或催化轉 化期間發生。 查L明之概要 因此，本發明之目的係提供一種催化劑載體及其特別 有利用途，其克服至今已知之一般型式催化劑載體之上述 缺點，且其能使廢氣内之污染物永久且有效轉化。 基於别述及其它目的，依據本發明，其提供一種催化 劑載體結構，包含： 具蜂窩狀結構之催化劑載體，此催化劑載體界定廢氣 於其間流動之流動方向； /此催化劑載體具有第一區域及第二區域，第一區域及 第二區域係彼此不同，且係沿流動方向連續地放置，如此 ，第一區域係被置於第一區域之下游；及 第一區域具有第一表面比熱容量，第二區域具有第，二 表面比熱容量，第一表面比熱容量係大於第二表面比熱容 量。 基於本發明目的，其亦提供用以清理來自内燃引擎之 廢氣之廢氣系統，包含·· 具蜂窩狀結構之催化劑載體，㈣化劑載體界定廢氣 於其間流動之流動方向； 475027 經濟部智慧財產局員工消費合作社印製 A7 --— B7 "~_ ' —-------- 五、發明說明（4 ) 此催化劑載體具有第一區域及第二區域，第一區域及 第二區域係彼此不同，且係沿流動方向連續地放置，如此 ’第二區域係被置於第一區域之下游；及 第一區域具有第一表面比熱容量，第二區域具有第二 表面比熱容量，第一表面比熱容量係大於第二表面比熱容 量、 換言之，催化劑載體具有蜂窩狀結構，且被提供於清 理來自内燃引擎之廢氣之廢氣系統。廢氣可以流動方向流 經催化劑載體，且催化劑載體於流動方向連續地具有第一 及第二區域。依據本發明，第一區域具有比下游第二區域 更高之表面比熱容量。表面比熱容量一辭被瞭解係指每一 幾何表面存在之熱容量。 相反於結構具較低熱容量之第一區域及改良冷卻啟始 性能之催化轉化器之發展趨勢，依據本發明之催化劑载體 於廢氣入口側上具有比氣體出口側更高之表面比熱容量。 第一區域内之更高表面比熱容量具有之優點係相當比 例之局部發生之溫度增加（其係藉由與未燃燒烴之放熱反 應而造成）被吸收及驅散。藉此，相對較大含量之熱能係 於第一區域内自廢氣取得，因此，避免第二區域内增加腐 #及/或老化。 然淪内燃引擎之型式，若此催化劑載體之蜂窩狀結構 係特別之薄壁及/或每單位截面積具有非常高數量之通道 時此功效係特別成功。因對效率所賦與之高度需求，此等 催化劑載體被用於廢氣内污染物之催化轉化，因對於特定 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公髮）475027 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 --------- B7 V. Description of the invention (1) Background of the invention · Technical field of the invention The relevant aspects of the invention are-a catalyst carrier with a honeycomb structure, which It is used to clean the exhaust gas from the internal combustion engine. The exhaust gas can flow through the catalyst carrier in a flow direction, and the catalyst carrier has a first region and a second region continuously in the flow direction. This type of catalyst carrier is specifically used to clean engine exhaust from motor vehicles. It can be produced from chemical materials or metal sheets. Based on many increasingly strict regulations on exhaust gas, the catalytic converters used to clean the exhaust gas need to be used more specifically for internal combustion engines of motor vehicles and the manner in which such engines are operated. When cleaning the exhaust of Mars-ignited engines, it is known to use the first region with the lowest possible heat capacity per unit volume. In this way, this region is rapidly heated, causing catalytic and exothermic reactions, and through the resulting thermal energy, the heating is more The downstream catalytic converter part reduces the release of pollutants in the cold start phase. Examples of this type of catalytic converter are described in International Publication No. WO 92/02716, US Patent No. 5,549,873, and Published European Patent No. EP 0 705 962 A1. A technique for cleaning up from a Diesel engine or a so-called lean combustion engine " is described in, for example, International Publication No. WO 99/58827. Diesel engines and lean-combustion engines operate with considerable excess air and are produced in the exhaust gas at significantly lower temperatures than during stoichiometric operation. International Publication No. WO 99/58827 describes a catalytic converter, which quickly reaches its operating temperature after engine cold starts, and cools very slowly in subsequent phases with lower exhaust gas temperatures. The catalytic converter described in this document may be divided into costs in the direction of flow. The paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). I -------- ^ ------- --line! (Please read the Caution V on the back first to fill in this page) 丨 4 / 3U2 / V. Description of the invention (2 Several areas, each unit volume has a particularly high heat set downstream of the-area with low heat capacity. , 1 =, high-type Γ engine (which is becoming more and more important today) includes internal combustion engines ... people are operating with gaseous fuels. The gaseous fuels used, especially methylal, are available because of a large amount of gas containing this smoke. It is especially used in trucks and buses. ”One, however, the above structure cannot be easily converted into this type of gas engine port. 'This type of gas engine is different from the normal driving cycle: the rest period is made special.' Compared with other engines, the uninterrupted operation time is extended. Furthermore, when the gas engine is operated, the gaseous fuel is generally incompletely burned, with the result that the highest hydrocarbon concentration is generated in the exhaust gas. High air content at a relatively low temperature The exhaust gas during cooling operation. Therefore, the catalytically active conversion is arranged close to this engine, so that it reaches its light-off temperature after the shortest possible time. It can be ordered, but the exhaust gas of the gas engine has the highest hydrogen concentration. If these hydrogen concentrations contact the catalytic / tongue surface, a high exothermic reaction occurs. This exothermic reaction causes the temperature to reach 1200 ° C. This high temperature causes the catalyst carrier The increase in the consumption of the consumer cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs, especially based on the dynamic support of the catalyst carrier, will cause cracking, which promotes the proliferation of corrosion phenomena, and ultimately leads to the failure of the carrier structure. Further aspects of the structure and structure of the catalyst carrier are The internal combustion engine has the flame-out performance immediately after it has been started. Based on heating the catalyst carrier to the temperature at which the catalytic conversion of pollutants in the exhaust gas occurs in the shortest possible time, the known catalyst carrier has been divided into, for example, several regions, the first Upstream area This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm). Description of the invention (3) It has a lower heat capacity than the area provided downstream. In this way, this first area has been very fast Ground heating, thus starting an exothermic reaction. The thermal energy released during catalytic conversion also helps downstream Area heating. Furthermore, it is known that lower heat capacity can be achieved by using low-thickness metal sheets. However, these sheets are highly sensitive to temperature peaks, which can occur in exhaust gas or during catalytic conversion. Summary of L Ming Therefore, the object of the present invention is to provide a catalyst carrier and its particularly advantageous use, which overcomes the above-mentioned disadvantages of the conventional type of catalyst carrier known so far, and which can permanently and effectively convert pollutants in exhaust gas. Among other objects, according to the present invention, it provides a catalyst support structure comprising: a catalyst support having a honeycomb structure, the catalyst support defining a flow direction in which exhaust gas flows; / the catalyst support having a first region and a second region, The first region and the second region are different from each other and are continuously placed along the flow direction. Thus, the first region is placed downstream of the first region; and the first region has a first surface specific heat capacity and the second region has The second and second surface specific heat capacities, the first surface specific heat capacity are greater than the second surface specific heat capacity. For the purpose of the present invention, it also provides an exhaust system for cleaning exhaust gas from an internal combustion engine, including a catalyst carrier having a honeycomb structure, and a catalyst carrier defining the direction in which the exhaust gas flows; 475027 Bureau of Intellectual Property, Ministry of Economic Affairs Printed by employee consumer cooperative A7 --- B7 " ~ _ '---------- V. Description of the invention (4) This catalyst carrier has a first region and a second region, a first region and a second region Are different from each other and are continuously placed along the flow direction, so that the 'second region is placed downstream of the first region; and the first region has a first surface specific heat capacity, the second region has a second surface specific heat capacity, and the first One surface specific heat capacity is larger than the second surface specific heat capacity. In other words, the catalyst carrier has a honeycomb structure and is provided in an exhaust system for cleaning exhaust gas from an internal combustion engine. The exhaust gas can flow through the catalyst carrier in a flow direction, and the catalyst carrier has first and second regions continuously in the flow direction. According to the invention, the first region has a higher specific surface heat capacity than the downstream second region. The term surface specific heat capacity is understood to mean the heat capacity present on each geometric surface. In contrast to the development trend of the first area of the structure having a lower heat capacity and improved cooling start performance, the catalyst carrier according to the present invention has a higher surface specific heat capacity on the exhaust gas inlet side than on the gas outlet side. The higher surface specific heat capacity in the first region has the advantage that a considerable proportion of the locally occurring temperature increase (which is caused by the exothermic reaction with unburned hydrocarbons) is absorbed and dissipated. Thereby, a relatively large amount of thermal energy is obtained from the exhaust gas in the first region, and therefore, the increase of decay # and / or aging in the second region is avoided. However, this type of internal combustion engine is particularly successful if the honeycomb structure of the catalyst carrier is particularly thin-walled and / or has a very high number of channels per unit cross-sectional area. Due to the high demand for efficiency, these catalyst carriers are used for the catalytic conversion of pollutants in exhaust gas, because for the specific paper size, the Chinese National Standard (CNS) A4 specification (210 X 297)
--- (請先閱讀背面之注意事項再填寫本頁) -ISJ. -線- 7 JUZ/ 4濟部智慧財產局員工消費合作社印製 A7 --~—___ 五、發明說明（5 ) 體積’其提供非常大量之廢氣能反應之催化活性表面。 ^因此催化劑載體上之此等兩熱承載一方面於内燃引 擎之操作及/或另-方面於催化劑載體之特別精細及因此 之敏感結構具其原始性。依據本發明，第一區域提供一種 保護區域，其減輕臨界溫度峰值及避免下游區域之快速熱 老化。 依據本發明之進一步方面，催化劑載體具有一種蜂窩 狀結構，此蜂窩狀結構於第一區域内具有比第二區域内更 大之避厚度。於此情況中，蜂窩狀結構表示劃定廢氣流動 通道之催化劑載體部份。因此，蜂窩狀結構壁厚度之增加 表示材料集中於第一區域内。此材料集中係特別適於於第 區域内產生較高之表面比熱容量。其對於具〇〇4mm至 0· lmm(4寸別疋0.065與〇.〇8mm間）之壁厚度之第一區域内 之蜂窩狀結構係特別有利。 依據傕化劑載體之另一具體例，第二區域内之蜂窩狀 結構具有少於〇.〇4mm(特別是少於〇 〇3mm)之壁厚度。具 較低壁厚度之蜂窩狀結構對熱應力具增加敏感性之反應。 因此，特別地藉由此等壁厚度，有利地係於上游提供一保 濩區域。此保護區域特別地平息廢氣之溫度峰值，因此， 延長苐一區域之催化活性伺服期。 依據本發明催化劑載體之另一具體例，第一區域之蜂 窩狀結構具有比第二區域更高之導熱性。第一區域内之增 加之熱性確保熱能之快速轉移，因此，局部受限之熱點 之產生，此特別係於具催化劑載體之催化活性表面之未燃 1« S--------t---------線 (請先閱讀背面之注意事項/4,寫本頁) 本紙張尺度適用中國國家標準（CNS)A4規格（21〇 297公釐）--- (Please read the precautions on the back before filling this page) -ISJ. -Line- 7 JUZ / 4 Printed by the Consumers ’Cooperative of the Ministry of Economic Affairs of the Ministry of Economic Affairs A7-~ ——___ V. Description of Invention (5) Volume 'It provides a very large amount of catalytically active surface where the exhaust gas can react. ^ These two heat loads on the catalyst carrier are therefore particularly delicate and therefore sensitive to the original nature of the catalyst carrier on the one hand and the operation of the internal combustion engine. According to the present invention, the first region provides a protection region which reduces the critical temperature peak and avoids rapid thermal aging in the downstream region. According to a further aspect of the present invention, the catalyst support has a honeycomb structure, and the honeycomb structure has a larger thickness in the first region than in the second region. In this case, the honeycomb structure represents the portion of the catalyst carrier that defines the exhaust gas flow path. Therefore, an increase in the thickness of the wall of the honeycomb structure indicates that the material is concentrated in the first region. This material concentration system is particularly suitable for generating a higher surface specific heat capacity in the first region. It is particularly advantageous for the honeycomb structure in the first region having a wall thickness of 0.001 mm to 0.1 mm (between 4 inches and 0.065 mm and 0.08 mm). According to another specific example of the chelating agent carrier, the honeycomb structure in the second region has a wall thickness of less than 0.04 mm (particularly less than 2003 mm). Honeycomb structures with lower wall thickness respond to increased sensitivity to thermal stress. Therefore, in particular by virtue of such wall thicknesses, it is advantageous to provide a protection zone upstream. This protection zone specifically quells the temperature peaks of the exhaust gas, thus extending the catalytic active servo period of the first zone. According to another specific example of the catalyst carrier of the present invention, the honeycomb structure of the first region has higher thermal conductivity than the second region. The increased thermal properties in the first region ensure the rapid transfer of thermal energy. Therefore, the generation of locally restricted hot spots is particularly unburned on the catalytically active surface of the catalyst carrier. 1 «S -------- t --------- Line (Please read the precautions on the back / 4, write this page) This paper size is applicable to China National Standard (CNS) A4 specification (21〇297 mm)
I I 經濟部智慧財產局員工消費合作社印製I I Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs
五、發明說明（6 ) 燒蜂窩體之放熱反應期間發生。於此惰況，對於第一區域 有利的是被建構成具至少10瓦特/公尺·。K(W/(m.k))之導 熱性，較佳係至少20 W7(m.k)。 依據進一步例示之具體例，催化劑載體具有能使廢氣 μ過之通道，第一區域之每單位截面積之通道數量係比第 二遲域之每單位截面積之通道數量更小。降低之通道數表 示此區域内表面積之降低，造成此區域内較低之催化轉化 。因此，第一區域内之溫度最大值（其會導致催化活性塗 覆物之過早老化）會被降低。因此等高溫亦會被分佈至其 後之層狀物，下游區域之熱老化亦被避免。結果，第一區 域内之每單位截面積之較小通道數量降低藉由豸老化而對 催化劑載體造成之損害。較佳地，相較於第二區域，第一 區域需具有每單位截面積至少少2〇%之通道。 依據本發明之另一特徵，催化劑載體於第一區域内每 平方公分具有15.5至124個通道（於第一區域内每平方英吋 100至800個通道）。依據有利之具體例，每平方公分15 5 與62個之間之通道（相對應於丨〇〇至4〇〇 cp叫每平方英吋之 胞孔數》之第-區域内之通道數被提出。對於第二區域内 之通道數特別有利的是每平方公分至少46·5個通道（则 _)。因為催化劑載體對熱㈣之敏感性係於通道數增 加時上升，第二區域内之通道數特別地係每平方公分至少 93個通道（_ cpsi)，較佳係每平方公分至少i 5 $個通道 (1000 cpsi)。 依據另一具體例，催化劑載體於第一區域内具有第一5. Description of the invention (6) Occurred during the exothermic reaction of burning honeycomb bodies. In this case, it is advantageous for the first area to be constructed with a minimum of 10 watts / meter ·. The thermal conductivity of K (W / (m.k)) is preferably at least 20 W7 (m.k). According to a specific example further exemplified, the catalyst carrier has channels through which the exhaust gas can pass, and the number of channels per unit cross-sectional area in the first region is smaller than the number of channels per unit cross-sectional area in the second late region. A reduced number of channels indicates a decrease in surface area in this area, resulting in a lower catalytic conversion in this area. As a result, the maximum temperature in the first region, which causes premature aging of the catalytically active coating, is reduced. Therefore, high temperature will also be distributed to the subsequent layers, and thermal aging in the downstream area will be avoided. As a result, the number of smaller channels per unit cross-sectional area in the first region reduces the damage to the catalyst carrier by tritium aging. Preferably, compared with the second region, the first region needs to have at least 20% less channels per unit cross-sectional area. According to another feature of the present invention, the catalyst support has 15.5 to 124 channels per square centimeter in the first region (100 to 800 channels per square inch in the first region). According to a favorable specific example, the number of channels in the first region of between 15 5 and 62 channels per square centimeter (corresponding to the number of cells per square inch called the number of cells per square inch) is proposed. For the number of channels in the second region, it is particularly advantageous to have at least 46 · 5 channels per square centimeter (then _). Because the sensitivity of the catalyst carrier to the thermal entrapment increases as the number of channels increases, the channels in the second region increase. The number is particularly at least 93 channels per square centimeter (_ cpsi), preferably at least i 5 $ channels per square centimeter (1000 cpsi). According to another specific example, the catalyst carrier has a first in the first region.
本紙張尺度適用中國國家標準（CNS)A4規格（210 X 9 矸 OU27 A7 B7 五、 發明說明（ 部 智 慧 局 消 合 壁厚度錄第二區域内具有第二壁厚度，第—壁厚度對第 二壁厚度之比例係第二區域之通道數對第—區域之2 之比例之至少-半。此係指，例如，於第—區域内具有每 平方公分15.5個通道（100cpsi)之通道密度且於第二 每平方公分93個通道（_ epsi)(其相對應於ι 6之比⑷之 催化劑載體係因此被建構成於第一區域内之蜂窩狀結構之 第一壁厚度係第二區域内之蜂窩狀結構之第二壁厚度之至 少三倍。第-區域内材料之累積補償因每單位截面積之較 小數量通道而降低之熱轉移。 依據另一具體例，第一區域具有第一軸長度且第二區 域具有第二軸長度，第-軸長度係使相對應於第二轴長度 之1〇〇/。至50%(較佳係20%)。因此，其可能，即使以密^ 結構形式，確保催化劑載體之伺服期被增加。再者’已確 定對於大數量之催化劑載體，具2〇mm軸長度之第一區域 係足以破壞特別高之峰值熱承載。 依據另一有利結構，催化劑載體具有含貴重金屬㈠寺 別是鉑族元素之責重金屬）之催化活性塗覆物。此塗覆物 之特徵藉第一區域内之貴重金屬含量低於第二區域内者。 貴重金屬含量於廢氣内污染物之催化轉化扮演重要角色。 低3里之責重金屬（特別是鉑族元素）導致催化劑載體第一 區域内較低之催化轉化速率。因此，於，例如，存在於廢 氣内之烴集中物與載體接觸時發生之放熱反應被顯著降低 ，且過早之熱老化被抵消。此對於第一區域内被建構成176 至Π60 g/m3貴重金屬含量之塗覆物特別有利。 本紙張尺度適用f國國家標準（CNS)A4g^_f() x 297公髮） 線This paper size is in accordance with Chinese National Standard (CNS) A4 (210 X 9 矸 OU27 A7 B7) V. Description of the invention The ratio of the wall thickness is at least -half of the ratio of the number of channels in the second region to the ratio of 2 in the first region. This means, for example, that the channel density in the first region has 15.5 channels (100 cpsi) per square centimeter and The second 93 channels per square centimeter (_ epsi) (which corresponds to a catalyst carrier system with a ratio of ι 6 is therefore built. The thickness of the first wall of the honeycomb structure in the first region is in the second region. The thickness of the second wall of the honeycomb structure is at least three times. The cumulative compensation of the material in the first region is reduced due to a small number of channels per unit cross-sectional area. The heat transfer is reduced. According to another specific example, the first region has a first axis Length and the second region has a second axis length, and the -axis length corresponds to 100 /. To 50% (preferably 20%) of the length of the second axis. Therefore, it is possible, even if dense Structural form to ensure the support of the catalyst carrier The period has been increased. Furthermore, it has been determined that for a large number of catalyst supports, the first region with a 20 mm axis length is sufficient to destroy particularly high peak heat loads. According to another advantageous structure, the catalyst support has a precious metal-containing temple. It is a catalytically active coating of platinum group elements). The characteristics of this coating are that the precious metal content in the first region is lower than that in the second region. The catalytic conversion of the precious metal content in pollutants in the exhaust gas It plays an important role. Responsibility for heavy metals (especially platinum group elements) in the lower 3 miles leads to a lower catalytic conversion rate in the first region of the catalyst support. Therefore, for example, it occurs when the hydrocarbon concentration in the exhaust gas comes into contact with the support. The exothermic reaction is significantly reduced, and the premature thermal aging is offset. This is particularly advantageous for coatings constructed in the first area that constitute a precious metal content of 176 to Π60 g / m3. This paper size applies to national standards of country f ( CNS) A4g ^ _f () x 297 public hair) line
I 發明說明（8 ) 依據另一例示之具體例，蜂窩狀結構被建構成至少部 份結構化片狀金屬層。此型式之片狀金屬層提供用以轉化 存在於廢氣内之污染物之大的催化表面積。再者，其特徵 因相對較高之導熱性其抵消催化劑載體之局部過熱。 依據另一具體例，其提議於第一區域與第二區域間提 領-間隙。此間隙避免熱於蜂窩狀結構内自第一區域傳導至 第二區域。因此，高溫主要係由第一區域吸收，因此，避 免第二區域過熱。 依據另一具體例，其提出第一區域内之催化劑載體之 塗覆物比第二區域内者更厚。此可，例如，藉由使催化劑 載體於製備方法期間接受數次塗覆操作而達成。因此，例 如，於第一區域内，更多之清洗塗覆可能附著於第一區域 内之蜂窩狀結構。 依據另一具體例，第一區域内之至少一些片狀金屬層 具有軸環，其係實質上與片狀金屬層平行設置，且較佳係 支撐片狀金屬層。此型式之軸環可，例如，以使片狀金屬 層之金屬片被建構成具相較於其它金屬片或片狀金屬層更 長約第-區域之第一軸長度之方式而t備。衫凸出區域 被變形且最後延伸於催化劑載體内部。此等軸環於此情況 中係實質上平行於片狀金屬層而設置且至少部份支撐此等 層。 再者，催化劑載體特別使用於内燃引擎（其係以氣態 燃料操作)之廢氣系統被提出。此型式之氣體引擎被特別 用於卡車及巴士。此等交通玉具之特徵係非常長之駕敬周 經濟部智慧財產局員工消費合作社印製 475027 A7 —一__B7 五、發明說明（9 ) 期，因此，冷啟始性能僅具次要性。因此，催化劑係於廢 氣内之污染物之有效催化轉化被確保之溫度。再者，因廢 氣内之隶咼氫濃度造成之過度熱承載可輕易被破除。此對 於催化劑載體之伺服期具特別之正面作用，特別是接近引 擎而設置者。 被視為本發明特性之其它特徵係如所附申請專利範圍 所示者。 即使本电明於此以具保邊區域之催化劑載體之具體例 例示及描述，然而其非欲被限於所示之細節，因為各種不 同之改良及結構改變可在未偏離本發明精神且於申請專利 範圍之等化物範圍内為之。 但是，本發明之結構及操作方法與額外之目的及優點 一起將可由下列特殊具體例（其係結合附圖而閱讀）之描述 而獲得最佳瞭解。 圖示簡要說明 第1圖係圖示具依據本發明之催化劑載體之廢氣系統 第2圖係依據本發明之催化劑載體之具體例之透視圖 ， 第3圖係第一單元之截面積之圖示； 第4圖係第二單元之截面積之圖示； 第5圖係依據本發明之催化劑載體之細節之部份截面 圖；且 第6圖係具軸環而形成之片狀金屬層之部份戴面圖。 本紙張尺度賴巾_ i¥il^_s)A4規格⑵〇 297公釐） I I I I I I I — II ------1 I ^ ------— II (請先閱讀背面之注意事項f4寫本頁) 12 A7 B7 五、 發明說明（10 ) I隹具體例之描沭 現詳細參考附圖，且首先參考第1圖，其顯示與具蜂 寫狀主體1之依據本發明之催化劑載體之具體例一起之内 燃引擎3之廢氣系統23之圖示。空氣21及氣態燃料2〇之混 合物被供應至内燃引擎3，其於此情況中係被建構成氣體 引-擎。於燃料/空氣之混合物被燃燒後，廢氣經使用廢氣 &而引導經催化劑載體1，如此，廢氣内之污染物被轉化 。轉化後，被清理之廢氣被釋放至環境中。催化劑載體1 具有第一區域ό及第二區域7，第一區域6具有比下游5之第 一區域7更高之表面比熱容量。 第2圖顯示催化劑載體}之具體例之透視圖。催化劑載 體1於流動方向5連續具有第一區域6及第二區域7。間隙19 係於第一區域6與第二區域7之間提供。第一區域6具有第 一軸長度14，其較佳係第二區域7之第二軸長度15之2〇〇/。 。催化劑載體1具有蜂窩狀結構8，其界定通道1〇之數量。 催化劑載體1另外由管狀套管24圍繞。相較於第二區域7之 第一單7L截面積12，例示之催化劑載體i之第一區域6對第 單70截面積11具有較小數量之通道。 第3圖顯不第一單元之截面積11之作圖。此圖顯示形 成蜂窩狀結構8之片狀金屬層4。片狀金屬層4被建構成使 其具可使廢氣經其流動之通道1〇。 , 第4圖顯不第二單元之截面積12之作圖。於此情況中 係比第3圖所不之第—單元之截面積者更小而製得 因此，確保其具有更高數量之通道。第一區域6之片狀 規格（210 x 297公爱） » ^----------^-----.»—· — ^ (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 13 475027 A7I. Description of the invention (8) According to another specific example, the honeycomb structure is constructed to form at least a part of a structured sheet metal layer. This type of sheet metal layer provides a large catalytic surface area for converting pollutants present in the exhaust gas. Furthermore, it is characterized by its relatively high thermal conductivity which counteracts local overheating of the catalyst support. According to another specific example, it proposes a withdrawal-gap between the first area and the second area. This gap prevents heat from being conducted from the first region to the second region within the honeycomb structure. Therefore, the high temperature is mainly absorbed by the first region, and therefore, the second region is prevented from overheating. According to another specific example, it is proposed that the coating of the catalyst support in the first region is thicker than that in the second region. This can be achieved, for example, by subjecting the catalyst support to several coating operations during the production process. Therefore, for example, in the first region, more cleaning coatings may adhere to the honeycomb structure in the first region. According to another specific example, at least some of the sheet metal layers in the first region have a collar, which is arranged substantially parallel to the sheet metal layer, and preferably supports the sheet metal layer. This type of collar can be prepared, for example, in such a manner that the metal sheet of the sheet metal layer is constructed to have a first axis length that is longer than the first region by comparison with other metal sheets or sheet metal layers. The protruding area of the shirt is deformed and finally extends inside the catalyst carrier. The collars in this case are arranged substantially parallel to the sheet metal layer and at least partially support the layers. Furthermore, catalyst carriers have been proposed especially for exhaust systems of internal combustion engines which are operated with gaseous fuels. This type of gas engine is especially used in trucks and buses. The characteristics of these traffic jade items are very long. It is printed by the Consumers' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, 475027 A7— 一 __B7. 5. The description of the invention (9), so the cold start performance is only secondary. . Therefore, the catalyst is a temperature at which the effective catalytic conversion of pollutants in the exhaust gas is ensured. Furthermore, excessive thermal loading due to the concentration of hydrogen in the exhaust gas can be easily broken. This has a particularly positive effect on the servo period of the catalyst carrier, especially if it is set close to the engine. Other features that are considered to be characteristic of the present invention are those shown in the scope of the attached patent application. Even though the present invention is exemplified and described by a specific example of a catalyst carrier with a marginal area, it is not intended to be limited to the details shown, because various improvements and structural changes can be made without departing from the spirit of the present invention and being patented The range is equal to the range. However, the structure and operation method of the present invention, together with additional objects and advantages, will be best understood by the description of the following specific examples (which are read in conjunction with the drawings). Brief description of the diagrams Figure 1 is a diagram illustrating a waste gas system with a catalyst carrier according to the present invention. Figure 2 is a perspective view of a specific example of a catalyst carrier according to the present invention. Figure 3 is a diagram of a cross-sectional area of a first unit. Figure 4 is a diagram of the cross-sectional area of the second unit; Figure 5 is a partial cross-sectional view of the details of the catalyst carrier according to the present invention; and Figure 6 is a part of a sheet metal layer with a collar A face map. The size of this paper is _ i ¥ il ^ _s) A4 specification ⑵〇297mm) IIIIIII — II ------ 1 I ^ ------— II (please read the note on the back first f4 (This page) 12 A7 B7 V. Description of the invention (10) I. Specific examples are now described in detail with reference to the drawings, and first with reference to Figure 1, which shows the catalyst carrier according to the present invention with a bee-shaped body 1 A specific example of the exhaust system 23 of the internal combustion engine 3 is shown. A mixture of air 21 and gaseous fuel 20 is supplied to the internal combustion engine 3, which in this case is constructed to constitute a gas engine. After the fuel / air mixture is burned, the exhaust gas is guided through the catalyst carrier 1 by using the exhaust gas, so that the pollutants in the exhaust gas are converted. After conversion, the cleaned off-gas is released to the environment. The catalyst carrier 1 has a first region 6 and a second region 7, and the first region 6 has a higher specific surface heat capacity than the first region 7 of the downstream 5. Fig. 2 is a perspective view showing a specific example of the catalyst carrier}. The catalyst carrier 1 has a first region 6 and a second region 7 continuously in the flow direction 5. The gap 19 is provided between the first region 6 and the second region 7. The first region 6 has a first axis length 14 which is preferably 200 / of the second axis length 15 of the second region 7. . The catalyst support 1 has a honeycomb structure 8 which defines the number of channels 10. The catalyst carrier 1 is additionally surrounded by a tubular sleeve 24. Compared to the first single 7L cross-sectional area 12 of the second region 7, the first region 6 of the exemplified catalyst carrier i has a smaller number of channels to the single 70 cross-sectional area 11. Figure 3 shows the plot of the cross-sectional area 11 of the first unit. This figure shows a sheet metal layer 4 forming a honeycomb structure 8. The sheet metal layer 4 is constructed so that it has a passage 10 through which exhaust gas can flow. Figure 4 shows the plot of the cross-sectional area 12 of the second unit. In this case, it is made smaller than the cross-sectional area of the first unit which is not shown in Figure 3. Therefore, it is ensured that it has a higher number of channels. Sheet size of the first area 6 (210 x 297 public love) »^ ---------- ^ -----.» — · — ^ (Please read the notes on the back before filling in this Page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 13 475027 A7
” Μ--------1---------.Μ (請先閱讀背面之注意事項Kv,寫本頁) 475027 A7 B7 五、發明說明（l2 ) 元件標號對照 1…蜂窩狀主體 2…廢氣 3…内燃引擎 -4…片狀金屬層 5…下游 6…第一區域 7…第二區域 8…蜂窩狀結構 9…壁厚度 10…通道 11…第一單元截面積 12···第二單元截面積 ^--------^---------線 (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 本紙張尺度適用中國國家標準（CNS)A4規格（210 X 297公釐）Μ -------- 1 ---------. Μ (Please read the precautions on the back Kv first, write this page) 475027 A7 B7 V. Description of the invention (l2) Component number comparison 1 ... honeycomb body 2 ... exhaust gas 3 ... internal combustion engine-4 ... sheet metal layer 5 ... downstream 6 ... first area 7 ... second area 8 ... honeycomb structure 9 ... wall thickness 10 ... passage 11 ... first unit cross-sectional area 12 ··· Cross-section area of the second unit ^ -------- ^ --------- line (please read the precautions on the back before filling out this page) Employee Cooperative of Intellectual Property Bureau of the Ministry of Economic Affairs The printed paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm)