201007006 九、發明說明： 【發明所屬之技術領域】 本發明涉及一種能自動將安裝於柴油引擎之排氣管後端之排 煙淨化器的積碳清除，以維護柴油引擎排放廢氣順暢的方法。 【先前技術】 柴油引擎會大量排放廢氣，嚴重污染大氣，造成地球溫室效 β 應與地球大量生物瀕臨滅絕，自二十世紀末期，已引起全球有識 之士的關切。尤其是汽車工業界’不斷提出各種解決辦法，其中 以裝設在柴油引擎之排氣管後端之排煙淨化器，有效過濾柴油引 擎大量排放之廢氣較具成效。但是這種裝設在柴油引擎排氣管後 端之排煙淨化器，經過一段時間使用後，形成的碳會在其濾蕊處 造成阻塞，不僅影響過濾柴油引擎排放廢氣之效果，且會影響柴 油引擎正常運轉之功能。 β 由於柴油車輛引擎所排放的廢氣通過排煙淨化器後，會在該 排煙淨化器的濾、，翁產生積碳，當積碳達到一定厚度時會產生阻塞 現象，致使排氣管内的壓力（背壓）昇高，因此，目前汽車工業界 乃將背壓感知器安裝在柴油車輛引擎排氣管内來偵測排煙淨化器 濾心處的壓力值，進而能偵測積碳之阻塞狀態，一旦柴油車輛引 擎所排放廢氣通過排煙淨化器的濾蕊積碳達到相當厚度而形成排 氣阻塞時，即會偵測到昇高的排氣背壓，此時引擎管理系統會發 出訊號，提高引擎工作溫度，將堆積在排煙淨化器濾表面的積碳 5 201007006 燃燒清除，以消除濾蕊阻塞。但是由於用車環境不佳（如台灣各大 都會區），車輛常常走走停停，或是個人的用車習性(短途使用或 不吊上南速公路），在經常怠速狀態下行驶，以致於裝設排煙淨化 器之柴油車輛，可能會因為引擎轉速不高而無法提高引擎工作溫 度，而無法將堆積在排煙淨化器濾蕊表面的積碳燃燒掉的情況， 不僅影響過濾柴油引擎排放廢氣之效果，並且影響柴油引擎正常 之運轉此時只能將車子開去汽車服務廠，由技師將堆積在排煙 淨化器遽蕊表面的積碳燃燒掉，不僅耗時，且不經濟，非常麻煩。 因此如何隨時 >肖除堆積在柴油引轉氣管後端之排煙淨化器遽 蕊表面的積碳’以維護排煙淨化器有效過遽廢氣之功能，並維護 柴油引擎排放廢氣功能順暢，乃本發明所探究者。 【發明内容】 t發明的主要目的在於解決目前在排氣管内安裝有排煙淨化 器的1知柴油引擎車輛，其藉由昇高引擎工作溫度來燃燒排煙淨 化器;慮a表面積销方法，會目為車輛行麟境與條件，以及駕 故人驾償的差異而無法提高引擎轉速，以致於無法提昇引擎工作 酿度’致使遽、黑表面的積碳無法順利被燃燒仍然會造成積碳， 影響排氣猶錢㈣擎工作表現的問題。 /本發明所提供之>肖除柴㈣擎排氣管積碳的方法，其主要特 徵在於不依*引擎本身駐作溫度，而可關立地自動消除柴油 6 201007006 引擎排氣管積碳，因此，無論柴油引擎車輛在任何駕駛環境或條 件，亦不論駕駛習慣的差異，均能有效地將排煙過濾器所累積的 積碳予以清除，藉以維護柴油引擎的排氣順暢與引擎工作表現。 本發明的技術手段，是在連接柴油引擎的排氣管内部由進氣 端至出氣端的方向依序設有廢氣進口與空氣進口、燃燒室與排煙 淨化器，該廢氣進口連接至柴油引擎排氣岐管，而空氣進口則連 通至引擎外界；背祕知碰絲於該排氣㈣，當所述排煙淨 化器因積碳阻塞，贈於昇高魏管_廢氣壓力時至預設值， 乃由該背麵知關酬；或_行車咖設定值，或達到行驶 里程數設定值時’進而由控制系統自動開啟空氣進口，以導引新 鮮空氣進人職糾並通騎述燃齡，同時啟動喷火裝置將燃 料霧化喷人魏燒室内與空氣混合，_點火將該霧化的空氣燃 料混合氣燃燒加熱至35〇t;〜6()(rc，讓加熱至高溫的氣體通過該 排煙淨化H，㈣_碳純清除，#積碳被猶至—定程度後， 排氣管_廢氣壓力也隨之下降，此時感知㈣測到廢氣壓力低 於預設值時，或設定_燒咖猶時，再由控⑽統自動關閉 空氣進口 ’自_啟絲進口，於再次啟動細丨擎時導引廢氣 進入該排氣㈣’麵撕述概該排煙淨化^贼廢氣後再 、以。此外’為了避免廢氣回流，本發明麵述廢氣進口與空氣 進口處均設有單向進氣閥門。 為了獲得良好的廢氣職效果，本發明是採麟巢式貴金屬 7 201007006 觸媒轉化器做為所述排煙淨化器。 和習知柴油弓丨擎消除排煙淨化器的方法相比較，本發明的方 法在消除積碳時_不會受辦丨擎功溫度的轉，因而能更有 效地將積碳齡’對於柴油引擎的排氣維護與工絲現具有更優 異的貢獻。 【實施方式】 以下配合圖式及元件符號對本發明的實施方式做更詳細的說 明’俾使熟習該項技藝者在研讀本說明書後能據以實施。 如第一圖所示，本發明提供之消除柴油引擎排氣管積碳的方 法，包括有以下步驟： a. 提供一排氣管，其内部由進氣至出氣的方向依序設有廢氣進 口與空氣進口、燃燒室與排煙淨化器； b. 以感知器偵測所述排煙淨化器之前的廢氣壓力； c·當所述廢氣壓力高於預設值時，由控制系統自動開啟所述空 氣進口 ’以導引新鮮空氣進入該排氣管内並通過所述燃燒室； d. 啟動一喷火裝置’將燃料霧化喷入該燃燒室内與空氣混合霧 化的同時點火燃燒加熱至35(TC〜600°C ; e. 讓加熱至所述溫度後的氣體通過該排煙淨化器，以引燃清除 積碳； f. 當所述感知器偵測到所述廢氣壓力低於預設值時，由控制系 8 201007006 統自動關閉所述空氣進口，自動開啟所述廢氣進口，以導引柴 油引擎所產生的廢氣進入該排氣管内並通過所述燃燒室與排 煙淨化器再排出。 除了在前述b步驟採用感知^貞測排氣管内的廢氣麼力以決 定控制系統是否啟動外’本發明亦可在該控制系統增設可以調整 设定時間的時間計算裝置，以及可以調整設定里程數的里程計算 ❹ 裝置’使用者可以自行設定每隔一段時間自動讓該控制系統的啟 動’或車輛行駛一段里程數後自動啟動該控制系統，讓控制系統 將霧化燃料喷入燃燒室與空氣混合並燃燒，讓本發明具備定期自 動清除積碳的功能。 再配合第二圖之實施例所示，所述排氣管丨之進氣端u所設 的廢氣itD 13伽於連接至柴剌料廢氣排氣岐管，並且在該 廢氣進π 13言免置-防止廢氣回流的單向闕門131 ;設於排氣管1 _ 進氣端11的空氣進口 14 ’則是連通至引擎外面，並且在該空氣進 口 14設置一防止空氣回流的單向閥門14卜 所述燃燒室15内設置一圓形的多孔網2，該多孔網2的中心 轴方向平仃於排氣管i的中心軸’俾使氣流能順暢地流動；在燃 燒至15還6又置一延伸至多孔網2的噴火裝置，所述喷火裝置包含 連接有燃料f 31的燃料嘴嘴3，並且在燃料喷嘴3周圍設置一 動點火系統4，所述燃料管31連接至燃料箱（圖中未顯示），可 壓果將燃料經由燃料管3輸送至燃料嘴嘴3喷出並霧化。所 9 201007006 述自動點火系統4係連接至車輛上的直流電源，其與整個控制系 統電性連接，俾能在最適當的時間通電產生火花，進而將從燃料 喷嘴3嘴出的霧化燃料點火燃燒。所述感知器6在本發明是一種 用來偵測壓力的背壓感知器，其設於燃燒室15側壁的適當位置， 並且電性連接至整個控制系統。 所述排煙淨化器5在本發明的較佳實施例是一種蜂巢式貴金 屬觸媒轉化器，其安裝於排氣管〗的出氣端12内的位置。 藉由前述本發明的方法，在平常工作狀態下時，噴火系統不作 動；單向閥門141關閉，空氣無法進入排氣管；單向閥門131則 開啟使得柴油引擎所排放的廢氣得以經由廢氣進口 13進入排氣 官内’廢氣再依序通過燃燒室15與排煙淨化器5，藉由排煙淨化 器的渡蕊將廢氣巾所含的污染物質過紐再抛；在排氣順暢的 狀態下，感知器6偵測到燃燒室15内的廢氣背壓在預設值以下， 或行車時間尚未到達設定值，或行驶里程尚未到達到設定里程 時’整個控制系統便不會啟動喷火裝置。當使用一段時間後，排 煙淨化器5會因積碳阻塞造成排氣不順，此時燃燒室内的背壓昇 兩’被感知器6倘測到後’將訊號傳送至控制系、统，或是達到行 車時間奴值，或糊練里減蚊辦，雜概號傳送至 控制系統，此時’在關閉柴油引擎後’控制系統即命令單向閥⑷ 開啟，讓外界的新鮮空氣進人排氣管！内，而單向，31關閉， 讓廢氣不再進人魏管；__魏命令加麵觸將燃料經 201007006 由燃料管31輸送到燃料喷嘴3喷出霧化並且混合進入排氣管内的 新鮮空氣，以及由自動點火系統4點火將霧化燃料與空氣的混合 氣點火燃燒加溫至350 C〜600 C ’此南溫隨即被傳遞至排煙淨化 器5 ’將附著於排煙淨化器的積碳燃燒清除；當積碳被清除到一定 程度後，排煙淨化器5又恢復至通暢不阻塞的狀塞，此時感知器6 偵測到燃燒室内的背壓下降至預設值以下，或燃燒積碳的時間設 定值已到料’便傳送訊號至控齡統，控織統即命令單向闕 141賴，同時喷火系統停止運作，而單_ 131開啟，於再次啟 動柴油引擎時，讓排放的廢氣得以進人排氣管，通過排煙淨化器5 破過祕再排出，如關而復始地運作，形成最姐消除積碳的 方法。 以所述者僅制贿縣㈣之錄實關，並非企圖具 下娜式上之關，^，凡有在糾之發明精神 保護之料。^更’皆仍應包括在本發明意圖 201007006 【圖式簡單說明】 第一圖為顯示本發明消除柴油引擎排氣管積碳的方法的流程示意 圖。 第二圖為顯示本發明之方法應用於柴油引擎排氣管之實施例示意 圖。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically removing carbon deposits from a smoke purifier installed at the rear end of an exhaust pipe of a diesel engine to maintain a smooth discharge of exhaust gas from a diesel engine. [Prior Art] Diesel engines emit a large amount of exhaust gas, which seriously pollutes the atmosphere, causing the global warming effect of the earth to be extinct with a large number of organisms on the earth. Since the end of the 20th century, it has aroused the concern of people of insight around the world. In particular, the automotive industry has been continually proposing various solutions. The exhaust gas purifier installed at the rear end of the exhaust pipe of the diesel engine effectively filters out the exhaust emissions of the diesel engine. However, the exhaust gas purifier installed at the rear end of the diesel engine exhaust pipe, after a period of use, the carbon formed will cause blockage at the filter core, which not only affects the effect of filtering the diesel engine exhaust gas, but also affects The function of the diesel engine to operate normally. β Since the exhaust gas emitted by the diesel vehicle engine passes through the exhaust gas purifier, it will be deposited in the exhaust gas purifier. When the carbon deposit reaches a certain thickness, it will cause a blockage, resulting in pressure in the exhaust pipe. (back pressure) rises. Therefore, the automobile industry currently installs a back pressure sensor in the exhaust pipe of a diesel vehicle engine to detect the pressure value at the filter center of the exhaust gas purifier, thereby detecting the blocked state of carbon deposition. Once the exhaust gas from the diesel vehicle engine reaches a considerable thickness through the filter cartridge carbon of the exhaust gas purifier, an elevated exhaust back pressure is detected, and the engine management system will send a signal. Increase the working temperature of the engine and remove the carbon deposits accumulated on the filter surface of the exhaust purifier 5 201007006 to eliminate the blockage of the filter core. However, due to poor car environment (such as Taiwan's major metropolitan areas), vehicles often stop and go, or personal car habits (short-haul or not on the South Speedway), driving at frequent idle speeds, resulting in For a diesel vehicle equipped with a smoke purifier, the engine operating temperature may not be increased due to the low engine speed, and the carbon deposited on the surface of the exhaust purifier filter may not be burned, which not only affects the filtered diesel engine. The effect of exhausting the exhaust gas, and affecting the normal operation of the diesel engine, can only drive the car to the car service factory at this time, and the technician burns the carbon accumulated on the surface of the exhaust gas purifier, which is time-consuming and uneconomical. very troublesome. Therefore, how to always remove the carbon deposit on the surface of the exhaust gas purifier at the rear end of the diesel-derived gas pipe to maintain the function of the exhaust gas purifier to effectively exhaust the exhaust gas, and to maintain the function of the diesel engine exhaust gas smoothly. The inventors of the present invention. SUMMARY OF THE INVENTION The main purpose of the invention is to solve a diesel engine engine that is currently equipped with a smoke exhaust purifier in an exhaust pipe, which is capable of burning a smoke exhaust purifier by raising the operating temperature of the engine; The meeting will not be able to increase the engine speed due to the difference between the vehicle's environment and conditions, as well as the driving compensation of the driver. As a result, the engine work cannot be improved, so that the carbon deposit on the black surface cannot be burned smoothly, and carbon deposition will still occur. Affect the problem of exhausting the money (four) of the performance of the engine. / The method for removing carbon from the exhaust pipe of the present invention is mainly characterized in that the engine is not in accordance with the temperature of the engine itself, and the diesel engine 6 201007006 engine exhaust pipe carbon can be automatically eliminated. Regardless of the driving environment or conditions of the diesel engine vehicle and the difference in driving habits, the accumulated carbon accumulated in the exhaust filter can be effectively removed to maintain the exhaust of the diesel engine and the performance of the engine. The technical means of the invention is to sequentially provide an exhaust gas inlet and an air inlet, a combustion chamber and a smoke exhaust purifier in the direction of the intake end to the outlet end inside the exhaust pipe connected to the diesel engine, and the exhaust gas inlet is connected to the diesel engine row The gas pipe is connected to the outside of the engine; the back is known to touch the exhaust gas (4). When the smoke purifier is blocked by carbon deposit, it is given to the preset value when the pressure of the exhaust pipe is increased. , by the back of the knowledge; or _ driving coffee set value, or when the mileage set value is reached, and then the control system automatically turns on the air inlet to guide the fresh air into the job and get through the ride At the same time, the fire-breathing device is activated to mix the fuel atomizing spray with the air, and the ignition of the atomized air-fuel mixture is heated to 35 〇t; 〜6 () (rc, let the gas heated to high temperature Through the exhaust gas purification H, (4) _ carbon pure removal, # carbon is still to a certain extent, the exhaust pipe _ exhaust gas pressure also decreases, at this time (4) when the exhaust gas pressure is lower than the preset value, Or set _ burned coffee, then automatically controlled by (10) The air inlet is imported from the _ starter, and the exhaust gas is introduced into the exhaust gas when the fine engine is started again. (4) The surface is detonated and the exhaust gas is cleaned and the thief is exhausted. Further, in order to avoid exhaust gas recirculation, the present invention The one-way intake valve is provided at both the exhaust gas inlet and the air inlet. In order to obtain a good exhaust gas effect, the present invention is a mining-type precious metal 7 201007006 catalytic converter as the exhaust gas purifier. Compared with the method of eliminating the diesel exhaust engine, the method of the invention can not be affected by the temperature of the engine when the carbon deposition is eliminated, so that the carbon age can be more effectively used for the diesel engine. Exhaust maintenance and workmanship now have a more excellent contribution. [Embodiment] The embodiments of the present invention will be described in more detail below with reference to the drawings and the components and symbols, so that those skilled in the art can As shown in the first figure, the present invention provides a method for eliminating carbon deposit in a diesel engine exhaust pipe, comprising the following steps: a. providing an exhaust pipe, the inside of which is sequentially provided from the intake air to the air outlet. Exhaust gas inlet and air inlet, combustion chamber and exhaust gas purifier; b. detecting the exhaust gas pressure before the exhaust gas purifier by the sensor; c· when the exhaust gas pressure is higher than a preset value, the control system automatically Opening the air inlet 'to guide fresh air into the exhaust pipe and passing through the combustion chamber; d. starting a fire-breathing device' to atomize fuel into the combustion chamber and mixing with air to ignite combustion heating Up to 35 (TC~600 ° C; e. let the gas heated to the temperature pass through the exhaust gas purifier to ignite the carbon deposit; f. when the sensor detects that the exhaust gas pressure is lower than At the preset value, the air inlet is automatically closed by the control system 8 201007006, and the exhaust gas inlet is automatically opened to guide the exhaust gas generated by the diesel engine into the exhaust pipe and pass through the combustion chamber and the exhaust gas purifier. Discharge again. In addition to using the sensing method in the foregoing step b to detect the exhaust gas in the exhaust pipe to determine whether the control system is activated or not, the present invention can also add a time calculation device that can adjust the set time in the control system, and can adjust the set mileage. Mileage calculation ❹ The device 'user can set the automatic start of the control system at intervals automatically' or the vehicle automatically starts the control system after a mileage, allowing the control system to spray atomized fuel into the combustion chamber to mix with the air. And burning, so that the present invention has the function of automatically removing carbon deposits on a regular basis. Further, as shown in the embodiment of the second figure, the exhaust gas itD 13 provided at the intake end u of the exhaust pipe is connected to the exhaust gas exhaust manifold of the diesel fuel, and the exhaust gas is exempted from the exhaust gas. a one-way valve 131 for preventing exhaust gas from flowing back; an air inlet 14' provided at the exhaust pipe 1 _ intake end 11 is connected to the outside of the engine, and a one-way valve for preventing air return is provided at the air inlet 14 14 a circular porous mesh 2 is arranged in the combustion chamber 15, and the central axis direction of the porous mesh 2 is flush with the central axis of the exhaust pipe i, so that the airflow can smoothly flow; Further, a fire-breathing device extending to the porous mesh 2 is provided, the fire-breathing device comprising a fuel nozzle 3 to which a fuel f 31 is connected, and a moving ignition system 4 is disposed around the fuel nozzle 3, the fuel pipe 31 being connected to the fuel tank (not shown), the fuel can be delivered to the fuel nozzle 3 via the fuel pipe 3 to be ejected and atomized. 9 201007006 The automatic ignition system 4 is connected to a DC power supply on the vehicle, which is electrically connected to the entire control system, and can be energized at the most appropriate time to generate a spark, thereby igniting the atomized fuel from the nozzle of the fuel nozzle 3. combustion. The sensor 6 is a back pressure sensor for detecting pressure in the present invention, which is disposed at an appropriate position on the side wall of the combustion chamber 15 and is electrically connected to the entire control system. The exhaust gas purifier 5 is a honeycomb type precious metal catalyst converter in a preferred embodiment of the present invention, which is installed at a position inside the gas outlet end 12 of the exhaust pipe. By the method of the present invention, the fire-breathing system does not operate under normal working conditions; the one-way valve 141 is closed, the air cannot enter the exhaust pipe; the one-way valve 131 is opened to allow the exhaust gas discharged from the diesel engine to pass through the exhaust gas inlet. 13 enters the exhaust official's exhaust gas and then sequentially passes through the combustion chamber 15 and the exhaust gas purifier 5, and the pollutants contained in the exhaust towel are thrown again by the exhaust gas of the exhaust gas purifier; Next, the sensor 6 detects that the exhaust gas back pressure in the combustion chamber 15 is below a preset value, or the travel time has not reached the set value, or the mileage has not reached the set mileage, the entire control system will not activate the fire-breathing device. . When used for a period of time, the exhaust gas purifier 5 will cause the exhaust gas to be unsatisfactory due to the carbon deposit blockage. At this time, the back pressure in the combustion chamber rises two 'before the sensor 6 detects the signal' to the control system, or Is to achieve the driving time slave value, or paste the mosquito reduction office, the miscellaneous number is transmitted to the control system, at this time 'after closing the diesel engine' control system that command the check valve (4) to open, let the outside fresh air into the row trachea! Inside, and one-way, 31 is closed, so that the exhaust gas is no longer in the Wei pipe; __Wei command adds fuel to the fuel through the 201007006 fuel pipe 31 to the fuel nozzle 3 to spray atomization and mix into the exhaust pipe fresh The air, as well as the ignition of the mixture of atomized fuel and air by the ignition of the automatic ignition system 4, is heated to 350 C~600 C 'this south temperature is then transmitted to the exhaust gas purifier 5 'will be attached to the exhaust gas purifier After the carbon deposition is removed to a certain extent, the exhaust gas purifier 5 is restored to a smooth and non-blocking plug, and the sensor 6 detects that the back pressure in the combustion chamber drops below a preset value. Or the time setting value of burning carbon deposit has arrived, then the signal is sent to the age control system, and the control system is commanded to unilaterally ,141, while the fire-breathing system stops operating, and the single-131 is turned on, when the diesel engine is started again. The exhaust gas can be exhausted into the exhaust pipe, and the exhaust gas purifier 5 breaks through the secret and then discharges, and if it is closed, it operates again, forming the method for eliminating the carbon deposit. In view of the fact that only the bribes of the county (4) are recorded, it is not an attempt to have a stipulation on the Na-style, ^, where there is a material to protect the spirit of the invention. ^More' should still be included in the intention of the present invention 201007006 [Simplified description of the drawings] The first figure is a schematic flow chart showing the method of the present invention for eliminating carbon deposits in the exhaust pipe of a diesel engine. The second figure is a schematic view showing an embodiment of the method of the present invention applied to a diesel engine exhaust pipe.
【主要元件符號說明】 1……排氣管 11……進氣端 12 ......出氣端 13 ......廢氣進口 131……單向閥門 14 ......空氣進口 141……單向閥門 15……燃燒室 2......多孔網 3……燃料喷嘴 31……燃料管 4......自動點火系統 5……排煙淨化器 6......感知器 12[Description of main components] 1...Exhaust pipe 11...Intake terminal 12...Exhaust end 13...Exhaust gas inlet 131...One-way valve 14...Air Inlet 141 ... one-way valve 15 ... combustion chamber 2 ... porous network 3 ... fuel nozzle 31 ... fuel tube 4 ... automatic ignition system 5 ... exhaust smoke purifier 6. ..... Sensor 12