565654 A7 B7 五、發明説明（1 ) 【發明所屬之技術領域】 本發明，是有關內燃機中的化油器之燃料供給規制裝 (請先閱讀背面之注意事項再填寫本頁) 置。 【先行之技術】 提出專利申請有：除了主系統混合氣供給機構之外具 備有慢速系統混合氣供給機構，當低負載運轉時及無負載 運轉時的節流閥開度含全閉的小開度時取代主系統混合氣 供給機構使慢速系統混合氣供給機構供給混合氣到內燃機 的化油器中，當點火電路呈開時或減速時排出未燃混合氣 到排氣系統爲了防止引起排氣淨化裝置之觸媒的熔損等用 來規制燃料供給的裝置。 在燃料通路介設電磁開關閥來直接規制燃料供給之例 (專利第2860084號公報）外有記載於日本特開昭 59 - 229040號公報之例，第7圖是顯示上述日本特開昭 59 - 229040號公報記載之例。 經濟部智慧財產局員工消費合作社印製 該化油器01，具有開關主空氣通路02的節流閥03及 浮筒室04，在節流閥03的上流側與主空氣通路〇2之間形 成文丘里（Venturi)部05的活塞閥06滑動自如地配設成 上下，在支承活塞閥06之上部的隔板上方設有活塞負壓室 08 ° 在浮筒室04設有：下部之主噴嘴〇9a沉沒於燃料液面 下而上部開口於主空氣通路02之文丘里部05的噴管09、 及下部之慢速噴嘴010a沉沒於燃料液面下而上部開口於慢 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -4- 565654 五、發明説明（2 速朵氣通路012的慢速噴管Q1Q。 在主噴管09***有從活塞閥〇6之底壁朝下方突出的 噴嘴針〇9b。 (請先閲讀背面之注意事項再填寫本頁) 主噴管09的途中與主空氣通路〇2藉由主空氣通路〇11 連通。 慢速空氣通路012，上流端開口於主空氣通路02的上 流側’而下流端與開口於節流閥〇3之閉鎖附近的分流孔 〇 1 2a進而連通於開口在下流側的慢速孔〇丨2b。 浮筒室04也通過空氣洩漏噴嘴01 3與主空氣通路〇2的 上流側連通。 此外在活塞閥06形成有連通文丘里部〇5及活塞負壓 室08的連通孔〇6a。 具備如以上主系統混合氣供給機構及慢速系統混合氣 供給機構的化油器中，浮筒室04、主空氣通路02之節流閥 〇3的下流側及活塞負壓室〇8分別藉由第1負壓通路021、 第2負壓通路022、第3負壓通路023連接於電磁切換閥 020 〇 經濟部智慧財產局員工消費合作社印製 電磁切換閥020之電磁，介由引擎點火電路之串聯連 接的切斷開關025及主開關026連接於電源027。 使切斷開關025及主開關026呈關狀態當通常行走時， 使電磁被勵磁而電磁切換閥020將第1負壓通路021連通 於空氣將浮筒室04呈大氣壓狀態’而其他第2、第3負壓 通路02 2、023呈不通狀態。 以節流閥03之啓動使文丘里部〇5的負壓作用於活塞 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -5 - 565654 A7 B7 五、發明説明（3 ) 負壓室08以與浮筒室04之大氣壓的差來昇降活塞閥〇6並 藉由主系統混合氣供給機構供給混合氣到內燃機。 (請先閲讀背面之注意事項再填寫本頁) 將切斷開關025呈開狀態從電源27遮斷點火電路並且 當關閉節流閥03時，如第7圖所示消磁電磁而電磁切換閥 020，將第1負壓通路021與空氣遮斷並與第2負壓通路 022及第3負壓通路023連通。 因此產生於節流閥03之下流側的高負壓，從第2負壓 通路022通過第3負壓通路023朝活塞負壓室〇8 ,通過第 負壓通路021引導至浮筒室04。 引導至浮筒室04之負壓藉由空氣洩漏噴嘴〇13被洩漏 調整成速度的負壓水平，因此停止從主噴管〇 9之燃料噴出 ，從慢速噴管〇 1 〇也規制燃料噴出。 是以當點火電路呈開時或減速時大幅度地規制燃料供 給使未燃混合氣排出到排氣系統可防止排氣淨化裝置之觸 媒的熔損等。 【發明所欲解決之問題】 經濟部智慧財產局員工消費合作社印製 在燃料通路介設電磁開關閥用來直接規制燃料供給（ 專利第2860084號公報），有確保燃料密封性困難的問題 ，並且開關閥也因爲在潮濕下使用所以會有燃料拽漏的可 能。 又第7圖所示例（日本特開昭59 - 229040號公報）的 情況，配管多形成複雜組裝麻煩空間效率不佳。 進而由於導入負壓之配管的長度及容積在浮筒室〇4之 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -6 - 565654 A7 ____ B7 五、發明説明（5 ) 規制慢速系統中的燃料供給。 (請先閲讀背面之注意事項再填寫本頁) 因此可改善燃料消耗率，並且藉由觸媒具備排氣淨化 裝置當點火電路呈開時或減速時控制閥呈開狀態來規制燃 料供給可防止觸媒的熔損等。 在第2慢速空氣通路的途中介設控制閥，所以以乾式 使用控制閥無閥的密封性和燃料洩漏的問題，可謀求成本 的減低。 在與慢速空氣通路之慢速燃料通路的連接點及慢速空 氣噴嘴之間連通有第2慢速空氣通路的簡單地配管，具有 優異地燃料供給的規制及解除的反應性。 申請專利範圍第2項所記載之發明，是如申請專利範 圍第1項所記載之化油器之燃料供給規制裝置，其特徵爲 :將前述第2慢速空氣通路及前述控制閥一體地安裝在化 油器本體箱。 將第2慢速空氣通路及前述控制閥一體地安裝在化油 器本體箱’所以配管等不會圍繞於化油器本體的周圍，配 管簡單組裝不會麻煩既廉價並且空間效率佳。 經濟部智慧財產局員工消費合作社印製 本申請專利範圍第3項所記載之發明，如申請專利範 圍第1項所記載之化油器之燃料供給規制裝置，其特徵爲 :在前述第2慢速空氣通路具備第2慢速空氣噴嘴。 在第2慢速空氣通路具備第2慢速空氣噴嘴，將控制 閥呈開閥狀態當減薄混合氣時可適當地設定空燃比。 【實施形態】 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -8- 565654 A7 B7 五、發明説明（6 ) 對於有關以下本發明一實施形態根據第1圖至第6圖 加以說明。 第1圖是顯示有關本實施形態之化油器1的剖面圖， 桌2圖是顯示一部分剖面之側視圖。 本化油器1，主要從化油器本體箱2將主空氣通路3及 活塞閥5在與主空氣通路3垂直的方向嵌合成滑動自如地 圓筒部4所構成。 在支承嵌合於圓筒部4之活塞閥5的上部之隔板6的 資訊設有活塞負壓室7，並在活塞閥5之底壁及主空氣通路 3之間形成文丘里部8。 化油器本體箱2的下方安裝浮筒箱9並在文丘里部8 的下方形成有暫時地保持燃料的浮筒室10，在浮筒室10設 有：下部的主噴嘴1 1 a沉沒於燃料液面下而上部開口於文 丘里部8的主噴管11、及下部的慢速噴嘴1 2a沉沒於燃料 液面下而上部開口於慢速空氣通路1 4的慢速噴管1 2。 在主噴管11從活塞閥5的底部朝下方***突出的噴嘴 針1 1 b，在第1圖未圖示但介由主空氣通路3的上流側及主 空氣噴嘴1 3a (參考第5圖）使流通的主空氣通路1 3 (參考 第5圖）連結於主噴管1 1的途中。 此外在浮筒室10設有導入燃料的浮筒閥17。 在較主空氣通路3的文丘里部8更下流側配設有節流 閥18。 前述慢速空氣通路1 4，較慢速噴管1 2更下流側的端部 在主空氣通路3以節流閥18的閉鎖附近與開口的分流孔15 本紙張尺度適用中國國家標準（CNS ) Α4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁)565654 A7 B7 V. Description of the invention (1) [Technical field to which the invention belongs] This invention relates to the fuel supply regulation device for carburetor in internal combustion engine (please read the precautions on the back before filling this page). [Leading technology] Patent applications include: in addition to the main system mixed gas supply mechanism, a slow system mixed gas supply mechanism is provided, and the throttle valve opening degree when fully loaded with low load and without load includes a fully closed small valve. When the opening degree is replaced, the main system mixture gas supply mechanism is used to supply the slow system mixture gas supply mechanism to the carburetor of the internal combustion engine. When the ignition circuit is turned on or decelerated, the unburned mixture gas is discharged to the exhaust system. A device used to regulate fuel supply, such as melting of catalysts in exhaust purification devices. An example is disclosed in Japanese Patent Application Laid-Open No. 59-229040 in addition to an example in which a solenoid valve is interposed in a fuel passage to directly regulate fuel supply (Patent No. 2860084). FIG. 7 shows Japanese Patent Application No. Sho 59- Examples described in 229040. The Carburetor 01 is printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. It has a throttle valve 03 and a pontoon chamber 04 that open and close the main air passage 02, and a venturi is formed between the upstream side of the throttle valve 03 and the main air passage 02. The piston valve 06 in the inner part (Venturi) 05 is slidably arranged up and down, and a piston negative pressure chamber 08 is provided above the partition supporting the upper part of the piston valve 06. In the float chamber 04, a lower main nozzle 〇9a is provided. The nozzle 09 sunk below the fuel liquid level and the upper part opening in the venturi part 05 of the main air passage 02, and the slow nozzle 010a at the lower part sinking below the fuel liquid level and the upper part opening slowly. The paper size applies Chinese national standards ( CNS) A4 specification (210X297 mm) -4- 565654 V. Description of the invention (2-speed slow-flow nozzle Q1Q of the air passage 012. The main nozzle 09 is inserted with a protruding downward from the bottom wall of the piston valve 06. Nozzle needle 〇9b. (Please read the precautions on the back before filling this page) The main nozzle 09 is connected with the main air passage 〇2 through the main air passage 〇11. Slow air passage 012, the upper end is open at the main The upstream side of the air passage 02 'and the downstream side It is connected with the shunt hole 〇1 2a near the lock of the throttle valve 〇3, and then communicates with the slow hole 〇2b opened on the downstream side. The buoy chamber 04 is also upstream of the main air passage 〇2 through the air leakage nozzle 03. In addition, the piston valve 06 is formed with a communication hole 06a that connects the venturi portion 05 and the piston negative pressure chamber 08. The carburetor is provided with the main system mixed gas supply mechanism and the slow system mixed gas supply mechanism as described above. The downstream side of the throttle valve 03 of the buoy chamber 04 and the main air passage 02 and the piston negative pressure chamber 08 are connected to the first negative pressure passage 021, the second negative pressure passage 022, and the third negative pressure passage 023, respectively. Solenoid switching valve 020 〇 The electromagnetic of the solenoid switching valve 020 printed by the Employees ’Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs is connected to the power source 027 via a series disconnect switch 025 and main switch 026 of the engine ignition circuit. The main switch 026 is in the off state. When normally traveling, the electromagnetic is excited, and the electromagnetic switching valve 020 communicates the first negative pressure path 021 with the air to bring the float chamber 04 to an atmospheric pressure state, and the other second and third negative pressure paths 02. 2,023 is not connected With the start of the throttle valve 03, the negative pressure of Venturi's 〇5 is applied to the piston. The paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -5-565654 A7 B7 V. Description of the invention (3 ) The negative pressure chamber 08 raises and lowers the piston valve 〇6 by the atmospheric pressure difference from the buoyant chamber 04 and supplies the mixture to the internal combustion engine through the main system mixture supply mechanism. (Please read the precautions on the back before filling this page) The disconnect switch 025 is in an open state to block the ignition circuit from the power source 27 and when the throttle valve 03 is closed, as shown in FIG. 7, the demagnetizing electromagnetic and electromagnetic switching valve 020 blocks the first negative pressure path 021 from the air and disconnects the air from the first The 2 negative pressure passages 022 and the third negative pressure passage 023 communicate with each other. Therefore, the high negative pressure generated on the downstream side of the throttle valve 03 is guided from the second negative pressure passage 022 to the piston negative pressure chamber 08 through the third negative pressure passage 023, and is guided to the float chamber 04 through the second negative pressure passage 021. The negative pressure guided to the pontoon chamber 04 is leaked through the air leakage nozzle 〇13 and adjusted to the negative pressure level of the speed, so the fuel injection from the main nozzle 09 is stopped, and the fuel injection from the slow nozzle 〇 1〇 is also regulated. The fuel supply is greatly regulated when the ignition circuit is turned on or decelerated, and the unburned gas mixture is discharged to the exhaust system to prevent the catalyst of the exhaust purification device from melting. [Problems to be Solved by the Invention] The Employee Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed an electromagnetic switch valve in the fuel passage to directly regulate the fuel supply (Patent No. 2860084), which had problems in ensuring fuel tightness, and The on-off valve may leak fuel due to its use in wet conditions. In the case of the example shown in Figure 7 (Japanese Patent Application Laid-Open No. 59-229040), the piping is often complicated and the assembly is troublesome. The space efficiency is not good. Furthermore, because the length and volume of the piping for introducing negative pressure are in the pontoon chamber, the paper size of the paper is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -6-565654 A7 ____ B7 V. Description of the invention (5) Slow regulation Fuel supply in high-speed systems. (Please read the precautions on the back before filling this page) Therefore, the fuel consumption rate can be improved, and the fuel supply can be prevented by regulating the fuel supply by the catalyst equipped with an exhaust purification device when the ignition circuit is on or the deceleration is on. Catalyst melting loss, etc. Since a control valve is provided in the middle of the second slow air passage, the dry-type control valve has valvelessness and fuel leakage problems, which can reduce costs. The simple piping that connects the second slow air passage between the connection point to the slow fuel passage of the slow air passage and the slow air nozzle has excellent reactivity in regulating and releasing fuel supply. The invention described in item 2 of the scope of patent application is a fuel supply regulating device for a carburetor as described in item 1 of the scope of patent application, and is characterized in that the second slow air passage and the control valve are integrally installed. In the carburetor body box. Since the second slow air passage and the aforementioned control valve are integrally mounted on the carburetor body box, piping and the like do not surround the carburetor body, and simple assembly of the piping will not be bothersome, inexpensive, and space efficient. The Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs printed the invention described in item 3 of the patent scope of this application, such as the fuel supply regulation device of the carburetor described in item 1 of the patent scope of application, which is characterized by The speed air passage includes a second slow air nozzle. The second slow air passage is provided with a second slow air nozzle, and the control valve is opened, and the air-fuel ratio can be appropriately set when the mixture is thinned. [Implementation form] This paper size applies Chinese National Standard (CNS) A4 specification (210X297 mm) -8-565654 A7 B7 V. Description of the invention (6) For the following one embodiment of the present invention, according to Fig. 1 to Fig. 6 Explain. Fig. 1 is a sectional view showing a carburetor 1 according to this embodiment, and Fig. 2 is a side view showing a part of the sectional view. The carburetor 1 is mainly constituted by fitting a main air passage 3 and a piston valve 5 from the carburetor body box 2 into a slidable cylindrical portion 4 in a direction perpendicular to the main air passage 3. A piston negative pressure chamber 7 is provided on the partition plate 6 supporting the upper portion of the piston valve 5 fitted in the cylindrical portion 4, and a venturi portion 8 is formed between the bottom wall of the piston valve 5 and the main air passage 3. A pontoon box 9 is installed below the carburetor body box 2 and a pontoon chamber 10 for temporarily holding fuel is formed below the venturi portion 8. The pontoon chamber 10 is provided with a lower main nozzle 1 1 a sunk on the fuel liquid surface The main nozzle 11 with the lower part and the upper part opening in the venturi 8 and the slow nozzle 12a with the lower part sinking under the fuel liquid surface and the slow nozzle 12 with the upper part opening in the slow air passage 14. A protruding nozzle needle 1 1 b is inserted into the main nozzle 11 downward from the bottom of the piston valve 5, and is not shown in FIG. 1 but passes through the upstream side of the main air passage 3 and the main air nozzle 1 3 a (refer to FIG. 5). ) The main air passage 13 (see FIG. 5) in circulation is connected to the main nozzle 11 on the way. A pontoon valve 17 for introducing fuel is provided in the pontoon chamber 10. A throttle valve 18 is disposed on the downstream side of the venturi portion 8 of the main air passage 3. The slow air passage 1 4 mentioned above, the end on the downstream side of the slower nozzle 12 2 is located near the main air passage 3 with the throttle 18 closed and the opening 15 is divided. This paper size applies to the Chinese National Standard (CNS) Α4 specification (210X297 mm) (Please read the precautions on the back before filling in this page)
、1T 經濟部智慧財產局員工消費合作社印製 -9- 565654 A7 B7 五、發明説明（7 ) 在更下流側連通於開口的慢速孔1 6。 (請先閱讀背面之注意事項再填寫本頁) 較慢速空氣通路14的慢速噴管12更上流側，如第2圖 所示將化油器本體箱2的側壁朝上方穿孔介由慢速空氣噴 嘴14a連通於與主空氣通路3的上流側連通的隔板6的下 方空間。 如以上的化油器基本構成下本化油器1，形成有以下的 第2慢速空氣通路21。 從前述慢速空氣通路1 4的慢速空氣噴嘴14a朝下向在 與延伸的上流側平行，第2慢速空氣通路21介由第2慢速 空氣噴嘴21a朝下方穿孔，連通於閥輸入孔21b。 該閥輸入孔2 1 b，與第2慢速空氣通路21 —起在化油 器本體箱2的側壁被一體形成，在朝閥輸入孔21b之外方 的開口周設閥座2 1 c，並在該開口周圍形成有凹部2 1 d，從 外部覆蓋外接的閥蓋構件22而凹部2 1 d用來構成閥輸出孔 〇 該閥輸出孔連通於前述慢速空氣通路14。 在該閥蓋構件22的中央安裝有電磁閥23。 經濟部智慧財產局員工消費合作社印製 朝向電磁閥23的閥輸入孔21b在突出之桿23a的前端 固裝閥體23b，以桿23a之移動閥體23b可用來開關閥輸入 孔2 1 b的開口。 桿23a，藉由彈簧25彈推於關閉電磁閥23之閥的方向 ，藉由朝電磁的勵磁使桿23a反抗於彈簧25打開退縮閥。 如第4圖所示藉由勵磁使電磁閥23之閥呈開狀態，則 第2慢速空氣通路21介於閥輸入孔21b及閥輸出孔（凹部 -10- 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） 經濟部智慧財產局員工消費合作社印製 565654 A7 五、發明説明（8 2 1 d )連通於慢速空氣通路1 4。 藉由消磁使電磁閥23之閥呈關狀態，則如第3圖所示 關閉第2慢速空氣通路2 1。 第5圖是顯示以上之燃料及空氣的供給系統流程模示 圖。 構成有：具有通過主空氣噴嘴13a的主空氣通路13並 通過主噴嘴11 a從主噴管11供給燃料到文丘里部8的主系 統混口熱供fe機構，及具有通過慢速空氣噴嘴14 a的主空 氣通路1 4並通過慢速噴嘴1 2a從慢速噴管1 2供給燃料到分 流孔1 5、慢速孔1 6的慢速系統混合氣供給機構。 而且以較與慢速空氣通路14中之慢速噴管1 2的連接 點更上流側在較慢速空氣噴嘴1 4a更下流側連通有第2慢 速空氣通路2 1。 在第2慢速空氣通路21介裝有第2慢速空氣噴嘴21a 及電磁閥2 3。 藉由電磁閥2 3之閥的開關，可改變慢速空氣通路14 及第2慢速空氣通路2 1的合計剖面積，可適當規制從慢速 系統混合氣供給機構的燃料供給量。 在主系統混合氣供給機構無影響由於第2慢速空氣通 路2 1的開關，不會規制燃料供給。 其次第6圖是顯示簡單說明控制系統的槪略圖。 上述電磁閥23藉由點火單元30所控制，在點火單元 3 0從電源輸入有通過連接成串聯的的點火開關3 1及切斷開 關3 2，電磁閥2 3之線圈的一端與點火開關31及切斷開關 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閱讀背面之注意事項再填寫本頁}Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs of the 1T. -9-565654 A7 B7 V. Description of the invention (7) Slow hole 16 communicating with the opening on the more downstream side. (Please read the precautions on the back before filling this page.) The slower nozzle 12 of the slower air passage 14 is more upstream. As shown in Figure 2, the side wall of the carburetor body box 2 is perforated upward through the slower The quick air nozzle 14 a communicates with a space below the partition plate 6 communicating with the upstream side of the main air passage 3. The above carburetor basically constitutes the lower carburetor 1 as described above, and the following second slow air passage 21 is formed. The slow air nozzle 14a from the slow air passage 14 is downward and parallel to the extended upstream side, and the second slow air passage 21 is perforated downward through the second slow air nozzle 21a and communicates with the valve input hole. 21b. This valve input hole 2 1 b is integrally formed with the second slow air passage 21 on the side wall of the carburetor body box 2, and a valve seat 2 1 c is provided around the opening outside the valve input hole 21 b. A recessed portion 2 1 d is formed around the opening, and the externally connected bonnet member 22 is covered from the outside, and the recessed portion 2 1 d is used to form a valve output hole. The valve output hole communicates with the aforementioned slow air passage 14. A solenoid valve 23 is attached to the center of the bonnet member 22. The employee's cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs prints the valve input hole 21b facing the solenoid valve 23. The valve body 23b is fixed at the front end of the protruding rod 23a. The valve body 23b can be used to open and close the valve input hole 2 1 b. Opening. The lever 23a is elastically pushed in the direction of closing the valve of the solenoid valve 23 by the spring 25, and the lever 23a is opened against the spring 25 by the electromagnetic excitation to open the retraction valve. As shown in Figure 4, the valve of the solenoid valve 23 is opened by excitation, and the second slow air passage 21 is interposed between the valve input hole 21b and the valve output hole (concave part-10- this paper size applies to Chinese national standards (CNS) A4 size (210X297 mm) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 565654 A7 V. Description of the invention (8 2 1 d) Connected to the slow air passage 14 4. The solenoid valve 23 is demagnetized by demagnetization In the closed state, the second slow air passage 21 is closed as shown in Fig. 3. Fig. 5 is a model diagram showing the flow of the above fuel and air supply system. It is composed of a main unit that passes through a main air nozzle 13a. Air passage 13 and the main system mixed-port heat supply mechanism for supplying fuel from the main nozzle 11 to the venturi 8 through the main nozzle 11 a, and the main air passage 14 through the slow air nozzle 14 a and through the slow speed The nozzle 1 2a supplies fuel from the slow nozzle 12 to the slow-flow system mixed gas supply mechanism of the split hole 15 and the slow hole 16. Moreover, the nozzle 1 2a is slower than the slow nozzle 12 in the slow air passage 14. The connection point is connected to the upstream side of the slower air nozzle 1 4a. 2 Slow air passage 2 1. A second slow air passage 21a and a solenoid valve 2 3 are interposed in the second slow air passage 21. The slow air passage 14 can be changed by opening and closing the solenoid valve 2 3 And the total cross-sectional area of the second slow air passage 21 can appropriately regulate the fuel supply amount from the slow system air supply mechanism. There is no effect on the main system mixture air supply mechanism due to the switch of the second slow air passage 21 The fuel supply will not be regulated. Next, Fig. 6 is a schematic diagram showing a simple description of the control system. The solenoid valve 23 is controlled by the ignition unit 30, and an ignition switch connected in series is connected to the ignition unit 30 from the power input. 3 1 and cut-off switch 3 2, One end of the coil of solenoid valve 2 3 and ignition switch 31 and cut-off switch The paper size is applicable to China National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back first Fill out this page again}
-11 - 565654 A7 B7 五、發明説明（9 ) 32之間的電線連接，另一端連接於點火單元30的端子。 切斷開關32之下流側端子，通過並聯的點火線圈33、 (請先閱讀背面之注意事項再填寫本頁) 3 4並連接於點火單元3 0的端子。 又切斷開關32的下流側端子，通過啓動開關35、啓動 磁鐵線圈36，進而通過二極體37連接於點火單元30的一 端子，並且通過離合式開關38連接於點火單元30的一端 子’離合式開關38連接於側立開關39的上側端子。 此外點火開關3 1及切斷開關32之間的電線通過中間 指示器40、二極體41、中間開關42被接地。 而且在點火單元30，從節流感測器43輸入節流閥開度 的檢測信號，並從脈衝振盪器44輸入曲軸角及引擎迴轉數 的檢測信號，從車速感測器45輸入車速檢測信號。 如以上的控制系統中，電磁閥23藉由點火單元30所 控制。 點火單元30，藉由節流感測器43所檢測的節流閥開度 及藉由車速感測器45所檢測的車速以及根據離合式開關呈 〇N · OFF狀態來控制電磁閥23。 經濟部智慧財產局員工消費合作社印製 從檢測車速判斷正在行走，且從檢測節流閥開度當判 斷節流閥全閉或小開度時，則電磁閥23控制呈開狀態。 即在行走中放開汽車加速踏板當踩引擎剎車減速時， 使電磁閥23呈開態。 當引擎剎車作動時，關閉節流閥1 8並在節流閥1 8之 下流側加上大的負壓，從慢速空氣通路14的慢速孔16會 有吸出必要以上燃料的傾向，但將電磁閥23呈開狀態用來 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -12- 565654 A7 ___ B7 五、發明説明（10 ) 開放第2慢速空氣通路2 1，減低加在慢速噴管1 2的負壓可 控制燃料的吸出，改善燃料消耗率。 (請先閱讀背面之注意事項再填寫本頁) 因而改善燃料消耗率，並且在排氣管藉由觸媒具備排 氣淨化裝置的內燃機中，使控制閥呈開狀態來規制燃料供 給可防止觸媒的熔損等。 又引擎刹車作動達到長時間，則觸媒的溫度過於變低 會有降低再加速時的淨化率，但控制電磁閥23的驅動使吐 出微量的燃料將觸媒的溫度維持某程度可防止再加速時之 淨化率的降低。 此外從減速狀態到停止的情況下，切斷離合器當離合 器開關3 8呈OFF狀態時，電磁閥23控制呈關狀態來解除 燃料規制並防止引擎停機的發生。 電磁閥23介裝於第2慢速空氣通路2 1的途中，所以以 乾式使用，不會有閥密封性和燃料洩漏的問題，可謀求成 本的減低。 經濟部智慧財產局員工消費合作社印製 將第2慢速空氣通路2 1及電磁閥23 —體地安裝在化油 器本體箱2，所以配管等不會圍繞於化油器本體的周圍，配 管簡單組裝不會麻煩既廉價並且空間效率佳。 又配管也短藉由電磁閥23的開關驅動具有優異地燃料 供給的規制及解除的敏感度。 此外將第2慢速空氣通路2 1的開關以電磁閥23進行， 但亦可當減速時在輸入孔由產生的負壓藉由作用的隔板進 行閥的開關。 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） -13- 565654 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明説明（11 ) 【圖面之簡單說明】 第1圖是有關本發明一實施形態的化油器剖面圖。 第2圖是作爲上述化油器之一部分的側視圖。 第3圖是電磁閥呈關狀態時的上述要部剖面圖。 第4圖是電磁閥呈開狀態時的上述要部剖面圖。 弟5圖是顯不燃料及空氣之供給系統的流程模式圖。 第6圖是控制系統的槪略圖。 第7圖是先行的化油器構成圖。 【圖號說明】 1···化油器 2…化油器本體箱 3…主空氣通路 4…圓筒部 5…活塞閥 6…隔板 7…活塞負壓室 8…文丘里部 9…浮筒箱 10…浮筒室 11…主噴管 12…慢速噴管 13···主空氣通路 14…慢速空氣通路 本紙張尺度適用中國國家標準（CNS ) A4規格（210><297公釐） (請先閲讀背面之注意事項再填寫本頁)-11-565654 A7 B7 V. Description of the invention (9) The wire connection between 32 and the other end is connected to the terminal of ignition unit 30. The downstream side terminal of the cut-off switch 32 is connected to the terminal of the ignition unit 30 through the ignition coil 33 in parallel (please read the precautions on the back before filling in this page) 3 4. The downstream terminal of the switch 32 is cut off, and is connected to one terminal of the ignition unit 30 through the start switch 35, the magnet coil 36, and the diode 37, and is connected to one terminal of the ignition unit 30 through the clutch switch 38. The clutch switch 38 is connected to an upper terminal of the side switch 39. The electric wire between the ignition switch 31 and the cut-off switch 32 is grounded via the intermediate indicator 40, the diode 41, and the intermediate switch 42. In the ignition unit 30, a throttle opening detection signal is input from the influenza detector 43, a detection signal of the crank angle and the number of engine revolutions is input from the pulse oscillator 44, and a vehicle speed detection signal is input from the vehicle speed sensor 45. As in the above control system, the solenoid valve 23 is controlled by the ignition unit 30. The ignition unit 30 controls the solenoid valve 23 by the throttle valve opening degree detected by the influenza sensor 43 and the vehicle speed detected by the vehicle speed sensor 45 and by the ON / OFF state of the clutch switch. Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs. It is judged that the vehicle is walking from the detection of the vehicle speed, and from the detection of the opening degree of the throttle valve, when it is judged that the throttle valve is fully closed or small, the solenoid valve 23 is in the open state. That is, when the vehicle's accelerator pedal is released while walking, when the engine brake is depressed, the solenoid valve 23 is opened. When the engine brake is actuated, the throttle valve 18 is closed and a large negative pressure is applied to the downstream side of the throttle valve 18. The slow hole 16 of the slow air passage 14 tends to suck more fuel than necessary, but Use the solenoid valve 23 in the open state to apply the Chinese National Standard (CNS) A4 specification (210X297 mm) to this paper size -12- 565654 A7 ___ B7 V. Description of the invention (10) Open the second slow air passage 2 1, Reducing the negative pressure applied to the slow nozzle 12 can control the suction of the fuel and improve the fuel consumption rate. (Please read the precautions on the back before filling in this page) Therefore, the fuel consumption rate is improved. In an internal combustion engine with an exhaust pipe equipped with an exhaust purification device through a catalyst, regulating the fuel supply by opening the control valve can prevent contact. Media loss. When the engine brake is operated for a long time, the temperature of the catalyst is too low, which will reduce the purification rate during re-acceleration. However, the control of the driving of the solenoid valve 23 causes a small amount of fuel to be discharged to maintain the temperature of the catalyst to a certain extent to prevent re-acceleration. Decrease in purification rate. In addition, from the deceleration state to the stop state, when the clutch switch 38 is turned off, the solenoid valve 23 is controlled to be turned off to release the fuel regulation and prevent the engine from stopping. Since the solenoid valve 23 is installed in the middle of the second slow air passage 21, it can be used in a dry type without the problems of valve tightness and fuel leakage, and the cost can be reduced. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. The second slow air passage 21 and the solenoid valve 23 are integrally installed in the carburetor body box 2. Therefore, piping and the like will not surround the carburetor body. Simple assembly is not bothersome, cheap and space efficient. In addition, the piping is also short-actuated by the on-off driving of the solenoid valve 23, and has excellent sensitivity for regulation and release of fuel supply. In addition, the second slow air passage 21 is opened and closed by the solenoid valve 23. However, the valve can be opened and closed by a negative pressure generated in the input hole through a functioning diaphragm during deceleration. This paper size applies the Chinese National Standard (CNS) A4 specification (210X297 mm) -13- 565654 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (11) [Simplified description of the drawing] Figure 1 A sectional view of a carburetor according to an embodiment of the present invention. Fig. 2 is a side view of a part of the carburetor. Fig. 3 is a cross-sectional view of the main part when the solenoid valve is closed. Fig. 4 is a cross-sectional view of the main part when the solenoid valve is opened. Figure 5 is a flow diagram of the fuel and air supply system. Figure 6 is a schematic diagram of the control system. Fig. 7 is a block diagram of a preceding carburetor. [Illustration of drawing number] 1 ... Carburetor 2 ... Carburetor body box 3 ... Main air passage 4 ... Cylinder part 5 ... Piston valve 6 ... Separator 7 ... Piston negative pressure chamber 8 ... Venturi 9 ... Float box 10 ... Float chamber 11 ... Main nozzle 12 ... Slow nozzle 13 ... Main air passage 14 ... Slow air passage This paper is sized to Chinese National Standard (CNS) A4 (210 > < 297 mm) ) (Please read the notes on the back before filling this page)
-14 - 565654 A7 B7 經濟部智慧財產局員工消費合作社印製 五、發明説明（12 ) 1 5…分流孑L 1 6…慢速孔 1 7…浮筒閥 18…節流閥 21…第2慢速空氣通路 22…閥蓋構件 23…電磁閥 25…彈簧 30…點火單元 31…點火開關 32…切斷開關 33 ^ 34 … 點 火 線 35·· •啓 動 開 關 36.. .啓 動 磁 鐵 線 37·. •二 極 體 38·· .離 合 式 開 關 39·· •側 、r. 開 關 40·· •中 間 指 示 器 4卜 •二 極 體 42.· .中 間 開 關 43·· •節 流 感 測 器 44 ·· .脈 衝 振 盪 器 45" .車 速 感 測 器 本紙張尺度適用中國國家標準（CNS ) A4規格（210X297公釐） (請先閲讀背面之注意事項再填寫本頁) -15--14-565654 A7 B7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention (12) 1 5 ... Diversion 孑 L 1 6 ... Slow hole 1 7 ... Float valve 18 ... Throttle valve 21 ... 2nd slow Speed air passage 22 ... Valve cover member 23 ... Solenoid valve 25 ... Spring 30 ... Ignition unit 31 ... Ignition switch 32 ... Cut-off switch 33 ^ 34 ... Ignition line 35 ... • Start switch 36 ... Start magnet line 37 ... • Diode 38 ··· Clutch switch 39 ··· Side, r. Switch 40 ··· Intermediate indicator 4 · • Diode 42 ··· Intermediate switch 43 ··· Flu tester 44 ·· .Pulse Oscillator 45 ". Vehicle Speed Sensor This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) (Please read the precautions on the back before filling this page) -15-