1354728 六、發明說明： 【發明所屬之技術領域】 • 本發明係關於一種二次空氣裝置，尤指一種適用於機 • 車之二次空氣裝置。 5 【先前技術】 因環境保護意識日漸升高，許多相關法規應運而生， φ 要求車輛（例如機車）需提高引擎燃燒效率或減少廢氣排 放。為解決環保問題，減低空氣之污染，目前於機車之引 10 擎上皆會組設有一二次空氣裝置，此二次空氣裝置係連接 於引擎排氣系統，當引擎燃燒並排出廢氣時，於廢氣排出 前再導入新鮮空氣（即所謂之二次空氣），使廢氣再進行二次 燃燒’故可使廢氣中會造成污染之物質再進行燃燒轉換， 充分進行氧化作用，達到淨化廢氣，藉以減低空氣污染之 15 目的。 請參閱圖1係習知二次空氣裝置之系統架構圖，一般之 ® 二次空氣裝置包括有一二次空氣濾清器91、一電磁閥92、 以及一單向閥93，前述之各元件係彼此以一二次空氣導管 95組設，並且二次空氣導管95再連通至引擎之汽缸頭排氣 20 道94。 因此，二次空氣導入時，可先經由二次空氣濾清器Μ 過慮’並且以電磁閥92之開閉之大小控制空氣流量，之後 空氣會再經由單向閥93而流入汽缸頭排氣道94，使得引擎 燃燒後之廢氣於汽缸頭排氣道94排出前’可再進行二次燃 3 1354728 會 燒’並藉以燃燒轉換會造成污染之物質進而達到減低空 氣污染之目的。 工 」而傳統上有將上述之電磁閥92組設於汽缸頭上（戋 =蓋上)之作法者，但如此之作法卻會使汽虹頭之高溫 影響電磁閥92之運作，故容易造成電磁間92之損壞，並非 十分理想。 ίο 15 20 請再同時參閱卜圖2係習知機車車架之立 係圖2部分詳細零件之分解圖，其中顯示有 且此機車車架96包括有一左側車架961、以及一 ⑹，於傳統之另-作法上，係將上述之電磁閥㈣設於右 側車架962上，但如此之作，土” , 法部會影響其他組設於機車車架 或4 :::間。再者’若發生意外時，例如側撞 十:理想:、各扣擊到電磁閥92而使電磁閥92損壞，亦非 因於此，本於積極發明之精神 以解決上述問題之二次空氣 裡j 本發明。 虱裝置，幾經研究實驗終至完成 【發明内容】 本發明係有關於一種二次介 車上’機車具有一引擎、—進人口裝置，其係組設於-機 1古一士 A 運乳官、及一排氣管，且引鼙 二_:=汽缸頭具有-與進氣管連通之進氣道、及 與排乳官連通之排氣道。其中，二次空《置包括有： 4 1354728 一空氣濾清器、一具有一入口及一出口之空氣室、一電磁 閥、一單向閥、一通氣管、及一二次空氣導管。 5 10 15 20 上述通氣官之二端分別與空氣遽清器之一排氣口、及 進氣管連通，且通氣管之中端並設有一與空氣室之入口連 通之分歧管。此外，二次空氣導管依序連通空氣室之出口、 電磁閥、單向閥、及排氣管。 藉此，本發明之二次空氣裝置係直接由原有之空氣濾 清器引進乾淨之空氣’無需如習用再設置一二次空氣遽清 器，不僅可減少零組件數目，且二次空氣導管之長度也較 為縮短，更可減少整體二次空氣裝置之零件與組裝成本。 另空氣室之設置也具有消音之功能，可降低噪音之產生。 此外，上述電磁閥可固設於引擎後方之一引擎鎖付支 架上，當然也可固設於引擎後方之其他區域，俾使整體二 次空氣裝置裝設於引擎之後方，遠離引擎之汽缸頭，故電 受到汽細頭高溫之影響而產生損壞，且於機車發 生思外時，也可避免電磁閥產生撞擊而損壞。 另外，上述單向間可固設於引擎後方之 支架上，俾使單向均曰窃鎖付 ,均日益同時固設於消音器鎖付古如 ，可避免增加鎖付支架之數目，可節省成本。支表 閥門再者上述早向閥可為-簧片閥、或其他等效結構之 【實施方式】 5 1354728 明參閱圖4、及圖5係本發明一較佳實施例之上視圖、 及側視圖，本實施例之二次空氣裝置係組設於一機車（圖未 示）上，機車包括有一引擎10、一進氣管2〇、及一排氣管3〇， 引擎10具有一汽紅頭Π，且汽紅頭11包括有一與進氣管2〇 5 連通之進氣道、及一與排氣管30連通之排氣道，該二次空 氣裝置包括：一空氣濾清器40、一空氣室5〇、一電磁閥6〇、 一早向閥65、一通氣管70、及一二次空氣導管78。 其中’空氣室50包括有一入口 51、及一出口 52，通氣 丨官70之二端分別與空氣濾清器4〇之一排氣口 4丨、及進氣管 10 20連通，且通氣管70之中端並設有一與空氣室5〇之入口 51 連通之分歧管75。至於二次空氣導管78則依序連通空氣室 50之出口 52、電磁閥60、單向閥65、及排氣管30。 在本實施例中，電磁閥60係固設於引擎1 〇後方之引擎 鎖付支架15上，且單向閥65係與消音器8〇同時固設於引擎 15 10後方之消音器鎖付支架81，單向閥65則為一簧片閥。 藉此，本發明之二次空氣裝置係直接由原有之空氣濾 丨清器40引進乾淨之空氣，無需如習用再設置一二次空氣濾 清器，不僅可減少零組件，且二次空氣導管78之長度也較 為縮短，更可減少整體二次空氣裝置之組裝成本。另空氣 20室50之設置也具有消音之功能，可降低整體二次空氣裝置 所產生之嚷音。 此外’因電磁閥60可組設於引擎1〇後方之一引擎鎖付 支架15上，可使整體二次空氣裝置裝設於引擎1〇之後方， 遠離引擎10之汽缸頭11，故電磁閥6〇不會受到汽缸頭丨i高 6 1354728 也可避免電 溫之影響而產生損壞，且於機車發生意外時 磁閥60產生撞擊而損壞。 上述實施例僅係為了方便說明而舉例而 主張之權利範圍自應以中請專利範圍本發明所 於上述實施例。 ’而非僅限 【圖式簡單說明】 • 圖1係習知二次空氣裝置之系統架構圖。 圖2係習知機車車架之立體圖。 10圖3係圖2部分詳細零件之分解圖。 圖4係本發明一較佳實施例之上視圖。 圖5係本發明一較佳實施例之側視圖。 【主 要元件符號說明】 10 引擎 11 15 引擎鎖付支架 20 30 排氣管 40 41 排氣σ 50 51 入口 52 60 電磁閥 65 70 通氣管 75 78 二次空氣導管 80 81 消音器鎖付支架 91 92 電磁閥 931354728 VI. Description of the Invention: TECHNICAL FIELD OF THE INVENTION The present invention relates to a secondary air device, and more particularly to a secondary air device suitable for use in a vehicle. 5 [Prior Art] Due to the increasing awareness of environmental protection, many related regulations have emerged. φ requires vehicles (such as locomotives) to improve engine combustion efficiency or reduce exhaust emissions. In order to solve the environmental problems and reduce the pollution of the air, there is a secondary air device on the locomotive of the locomotive. The secondary air device is connected to the engine exhaust system. When the engine burns and exhausts the exhaust gas, Fresh air (so-called secondary air) is introduced before the exhaust gas is exhausted, so that the exhaust gas is re-burned again. Therefore, the pollutants in the exhaust gas can be burned and converted, and the oxidation can be fully performed to purify the exhaust gas. 15 purposes to reduce air pollution. Please refer to FIG. 1 for a system architecture diagram of a conventional secondary air device. The general® secondary air device includes a secondary air filter 91, a solenoid valve 92, and a check valve 93. The units are each assembled with a secondary air duct 95, and the secondary air duct 95 is reconnected to the cylinder head exhaust passage 94 of the engine. Therefore, when the secondary air is introduced, the air flow can be controlled first through the secondary air filter and the air flow rate can be controlled by the opening and closing of the electromagnetic valve 92, after which the air flows into the cylinder head exhaust passage 94 via the check valve 93. After the exhaust gas of the engine is exhausted in the cylinder head exhaust passage 94, it can be re-burned 3 1354728 and burned, and the pollutants generated by the combustion conversion can reduce the air pollution. Traditionally, there is a practice of setting the above-mentioned solenoid valve 92 on the cylinder head (戋=cap), but such a method causes the high temperature of the steam head to affect the operation of the solenoid valve 92, so it is easy to cause electromagnetic The damage between the 92 is not very satisfactory. Ίο 15 20 Please also refer to the exploded view of the detailed part of Figure 2 of the locomotive frame of Figure 2, which shows that the locomotive frame 96 includes a left side frame 961 and one (6). In another method, the above-mentioned solenoid valve (4) is placed on the right frame 962, but in this case, the soil, the law will affect other groups in the locomotive frame or 4::: In the event of an accident, such as a side collision: 10: ideal: each button is pressed to the solenoid valve 92 to damage the solenoid valve 92, and it is not because of this, the spirit of the active invention to solve the above problem in the secondary air虱 虱 , , , , 几 几 几 几 几 几 几 几 【 【 【 【 【 【 【 【 【 本 本 本 本 本 本 本 本 本 二次 本 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次 二次a milk official, and an exhaust pipe, and the second _:= cylinder head has an intake port that communicates with the intake pipe, and an exhaust passage that communicates with the milk discharge officer. : 4 1354728 An air filter, an air chamber with an inlet and an outlet, an electric a valve, a check valve, a vent pipe, and a secondary air conduit. 5 10 15 20 The two ends of the ventilator are respectively connected to an exhaust port of the air cleaner and the intake pipe, and are in the snorkel The end is provided with a branch pipe communicating with the inlet of the air chamber. Further, the secondary air duct sequentially connects the outlet of the air chamber, the electromagnetic valve, the check valve, and the exhaust pipe. Thereby, the secondary air device of the present invention It introduces clean air directly from the original air filter. 'There is no need to set up a secondary air cleaner as in the case of use, which not only reduces the number of components, but also shortens the length of the secondary air duct, and reduces the overall The parts and assembly cost of the secondary air device. The air chamber is also equipped with a sound-absorbing function to reduce the noise. In addition, the above-mentioned solenoid valve can be fixed on one of the engine lock brackets behind the engine, and of course it can be solid. In other areas behind the engine, the whole secondary air device is installed behind the engine and away from the cylinder head of the engine, so the electricity is damaged by the high temperature of the steam head and is damaged by the locomotive. In addition, the solenoid valve can be prevented from being damaged by impact. In addition, the one-way space can be fixed on the bracket at the rear of the engine, so that the one-way plagiarism locks are fixed at the same time. Fu Guru can avoid increasing the number of lock brackets, which can save costs. The valve of the watch table can be a reed valve or other equivalent structure. [Implementation] 5 1354728 See Figure 4 5 is a top view and a side view of a preferred embodiment of the present invention. The secondary air device of the present embodiment is assembled on a locomotive (not shown). The locomotive includes an engine 10 and an intake pipe. 2〇, and an exhaust pipe 3〇, the engine 10 has a steam red head, and the steam red head 11 includes an intake passage communicating with the intake pipe 2〇5, and an exhaust passage communicating with the exhaust pipe 30. The secondary air device includes an air cleaner 40, an air chamber 5A, a solenoid valve 6A, an early valve 65, a vent pipe 70, and a secondary air conduit 78. The air chamber 50 includes an inlet 51 and an outlet 52. The two ends of the ventilator 70 are respectively connected to an exhaust port 4丨 of the air cleaner 4 and the intake pipe 10 20, and the vent pipe 70 is connected. The intermediate end is provided with a branch pipe 75 communicating with the inlet 51 of the air chamber 5. As for the secondary air duct 78, the outlet 52 of the air chamber 50, the solenoid valve 60, the check valve 65, and the exhaust pipe 30 are sequentially connected. In this embodiment, the solenoid valve 60 is fixed on the engine lock bracket 15 behind the engine 1 , and the check valve 65 is fixed to the silencer lock bracket at the rear of the engine 15 10 at the same time as the silencer 8 . 81, the one-way valve 65 is a reed valve. Thereby, the secondary air device of the present invention directly introduces clean air from the original air filter cleaner 40, and does not need to provide a secondary air filter as in the prior art, thereby not only reducing components but also secondary air. The length of the conduit 78 is also shortened, which further reduces the assembly cost of the overall secondary air device. The air 20 chamber 50 is also equipped with a muffler function to reduce the noise generated by the overall secondary air unit. In addition, since the solenoid valve 60 can be assembled on one of the engine lock brackets 15 behind the engine 1 , the entire secondary air device can be installed behind the engine 1 , away from the cylinder head 11 of the engine 10 , so the solenoid valve 6〇 will not be damaged by the cylinder head 丨i high 6 1354728 can also avoid the influence of electric temperature, and the magnetic valve 60 will be damaged and damaged when the locomotive accident occurs. The above-described embodiments are merely exemplified for the convenience of the description, and the claims are intended to be within the scope of the invention. 'Not limited to a simple description of the drawings】 • Figure 1 is a system architecture diagram of a conventional secondary air device. Figure 2 is a perspective view of a conventional locomotive frame. 10 Figure 3 is an exploded view of the detailed parts of Figure 2. Figure 4 is a top plan view of a preferred embodiment of the present invention. Figure 5 is a side elevational view of a preferred embodiment of the present invention. [Main component symbol description] 10 Engine 11 15 Engine lock bracket 20 30 Exhaust pipe 40 41 Exhaust σ 50 51 Inlet 52 60 Solenoid valve 65 70 Vent pipe 75 78 Secondary air duct 80 81 Silencer lock bracket 91 92 Solenoid valve 93
汽虹頭 進氣管 空氣濾清器 空氣室 出口 單向閥 分歧管 消音器 二^欠空氣濾清器 單向閥 7 1354728 94 汽缸頭排氣道 95 96 機車車架 961 962 右側車架 二次空氣導管 左側車架Steam head air intake air filter air chamber outlet check valve branch pipe silencer two ^ under air filter check valve 7 1354728 94 cylinder head exhaust 95 96 locomotive frame 961 962 right frame twice Air duct left side frame