200944653 六、發明說明： 【發明所屬之技術領域】 本發明關於一種緊密形成的喷油裝置，包括一燃料 泵、一壓力調節器、一喷油器及一空氣調整器。 【先前技術】 在先前技術中，喷油裝置有各種不同習知類型。特別 是基於成本及構造空間理由’小型内燃機（它們只有一個或 二個汽缸及一個小的行程室）需要有獨立的解決方案。舉例 而言，這類小型内燃機的使用領域為二輪車或三輪車或刈 草機（Rosnmahler)。習知的喷油裝置一般在一油箱中包含具 一壓力調節器的一燃料泵，其中該燃料泵將燃料以一預定 壓力送入一管路，例如一個通道（Rail)或類似物中。在管路 末端設有一喷油器（Injeht〇r)，該喷油器受一控制裝置將燃 料喷入一吸取管中或直接喷入一燃燒室。但這類喷油裝置 很繁複且貴’因此它們同樣使小型内燃機變得很貴。 在歐洲專利EP 1 340 906 B1發表了一種具有電子控制 手段的噴油裝置，其中喷油器設在一泵活塞附近。此外， 此處設有一預壓閥，以在活塞回流到油箱的活流管路時在 活塞的一壓力行程的起始階段定時施一預壓力到燃料。在 此，該預壓閥將一壓力室中的燃料的一部分排空到回授 管如此’特別是可將喷油器内蒸汽泡形成的情事可減少。 然而其構造較複雜，且此裝置佔很大的構造空間。 【發明内容】 與之相較’具有申請專利範圍第1項的特徵的本發明 200944653 的喷油裝置有一優點，即其構造很緊密，此外本發明的喷 油裝置可特別簡單而廉價地製造。此外，依本發明，泵的 及取脈動作用（Saugpulsati〇n，英：sucking p心ati〇n)可減 少，特別是可避免在燃料供應管路中產生蒸氣泡，此外， 本發明的喷油裝置特別可用在小型内燃機，例如在二輪車 或刈草機或其類似者。這點依本發明達成之道為：該喷油 裝置有一燃料泵、一用於調節喷入壓力的壓力調節器、一 ❾喷油器及一空氣調節器，它們為一喷模組的整合構件。噴 油模組為一緊密小構造的構件，在此，壓力調節器為噴油 器的整合構件。此外，該喷油裝置包含一吸取室，它是該 一噴油模組的整合構件，吸取室經一第一止回閥與燃料泵 至連接。在此，泵室的體積比吸取室的體積，且宜小了多 倍。泵室的體積尤宜比吸取室的體積小了十倍或更多在 吸取室中設有一充以氣體的區域及一含流體燃料的燃料區 域。在此該充以氣體的區域的目的係將吸取室中燃料泵的 Q 吸取脈動作緩衝。此外，可能存在燃料管路中的蒸汽泡上 升到吸取室之充以氣體的區域，因為吸取室係設在燃料供 應管路的一開口與燃料泵之間，在此喷油模組可完全地預 安裝，因此它只須接到所需的接頭上，並可直接建構在車 子中。在此，喷油模組的構件宜設在噴油模組一共同殼體 中。除了喷油模組緊密外還有另一好處，即：喷油模組用 的其他構件也可最小化。 申請專利範圍附屬項顯示本發明較佳的進一步特點。 此外’該噴油裝置更包含一回授室，該回授室經一第 5 200944653 止回閥與泵室連接。在此，回授室的體積宜大於泵室的 體積，且宜大十倍。回授室的目的為：如果在泵室中已形 成蒸氣泡或蒸氣泡被吸入泵室，則可（特別是在燃料泵的壓 力階段開始時）將該蒸氣泡經第二止回閥導離到回授室中， 在此，燃料泵的一活塞的一端形成一控制緣，它在活塞運 動的進一步過程中將第二止回閥的一接頭關閉以在泵室中 建立壓力’如此’在泉室中的原來的麼力建立階段就稍微 延遲。 特佳的方式中，回授室同樣包含一充以氣體的區域， 如此’可藉著設二個充以氣趙的區域---個在回授室， 一個在吸取室 將燃料泵的吸取脈動作用進一步減少。 如此’如果蒸氣泡被入回授室，則將它們收集在回授室中。 回授室宜用油壓方式設成一共同的環形室，如此可使 構造特別簡單’且該共同的室有二充以氣體的區---個 在回授區域，一個在吸取區域。 此外一有利做法，係將回授室與一油箱連接，如此可 將由泵室折出的蒸氣泡送回到油箱中。在此，為了在回授 室中維持一個充以氣體的區域’大約在回授室的一個最上 方（沒垂直方向最上方）的區域下方宜設一個油箱接頭。 依本發明另一變更設計，該回授室與空氣調節器連 接。如此，送入回授室中蒸氣泡經該回路空氣管路導至吸 取管。由於在每個噴油過程，空氣調節器及燃料泵或喷油 器同時被動作，故在回授室中收集的燃料蒸氣經空氣調節 器進入吸取管，因此可將經喷油器噴入吸取管的燃料量減 200944653 少。 〇 為了防止液體燃 管路進入空氣調節器 子閥包含一浮子體， 管路中導進。二者間 路密封。所用浮子體 別的密封元件的浮子 空氣調節器的一 此位置在吸取管中沿 方’如此可防止引擎 接管路到空氣調節器 境。 空氣調節 中宜設一 燃料上。 可在一浮 可為一球 吸取管中 密封作用 燃料從回 取管到引 料經回授室與 ，故在連接管 該浮子體浮在 留有間隙，且 ，舉例而言， 體。 導離管路宜在 流動方向在一 直立的場合， 並由該處經吸 浮子閥。該浮 浮子體在連接 子閥室上將管 體或一個具分 一位置開口， 的節流蓋片前 授室蒸發經連 擎進入周圍環 此外，回授室與空氣調節器之間的連接管將宜開口到 空氣調節器的-位置，使連接管路的一開口被空氣調節器 的-封閉元件開放或關閉。因此，該空氣調節器的封閉元 件除了將空氣調節㈣放及關，還有將連接通道開放 與關閉的功能。如λ ’如果節流蓋片不完全封閉，燃料蒸 發到周圍環繞的情事也可避免。 … 在此，尤宜使連接管路平行於一開氣供應管開口到空 氣調節器。如此可達成空氣調節器的簡單而廉價的構造， 且將該連接管路與空氣調節器同時開放及關閉。如不採此 方式’也可使連接管路對空氣調節器的空氣供應管路成9〇 度開口，如此，可用簡罝古七收Ba _ 間旱方式將開口與空氣調節器在不同 時間開放及關閉。 200944653 此外，宜將從油箱到吸取室的供應及吸取室與泵室之 間的第一止回閥沿油裝置的軸向設在互相錯開的位置。如 此可防止可能發生的壓力波（它由燃料管路傳送）不直接經 開放的第—止回閥傳輸到泵室中。此外如此可防止從燃料 供應管路出來的蒸氣泡不直接被泵吸取，而可能會先在吸 取室中向氣態區域的方向在吸取室中上升。在此，錯開的 "又置方式係選設成使第一止回閥沿噴油裝置的水平方向設 在比燃料管路在吸取室中的開口更低之處。 噴入裝置宜剛好包含一動作器，它同時將燃料泵和空 氣調整器動作。如&，特別可省却分別的動作器以分別將 空氣調節器或燃料泵動作，因此構件的數目明顯減少。如 此，當然也使成本降低。如此，該共同的動作器擔任泵驅 動的功能，也擔任空氣調節器之調整驅動器的功能。此， 共同動作器可將燃料泵與空氣調節器同時動作，其中該動 作器包含一線圈、一第一電樞及一第二電樞，在此，第一 電栖與空氣調節器配合，第二電樞與燃料泵配合，且二電 樞可利用其共同線圈活化。如不採此方式，空氣調節器也 了和燃料栗不相干地動作β 該整合到噴油器中的壓力調節器宜包含一向外開放的 閥元件以及一個將此閥元件施預應力的彈簧元件，以將喷 油壓力調節》換言之，喷油器設成向外開放的噴油器形成， 它在施預定壓力時開放，其中克服彈簧元件的彈簧力量。 在此’當喷油器上的壓力再降到動作壓力以下時，則喷油 動作結束’因此向外開放的閥元件受到彈簧元件影響，再 200944653 復位到起始位置。 為了提供一儘量緊密的構a « „ ^ 油構化，第一電樞宜為空氣調節 器的朴，第二電樞宜為燃料泵的—部分。 電樞為空氣調節器的一閥元# 件而第一電樞為燃料泵的活200944653 VI. Description of the Invention: [Technical Field] The present invention relates to a closely formed fuel injection device comprising a fuel pump, a pressure regulator, an injector and an air conditioner. [Prior Art] In the prior art, the fuel injection device has various conventional types. Especially for cost and construction space reasons, small internal combustion engines (they have only one or two cylinders and a small stroke chamber) require an independent solution. For example, the use of such small internal combustion engines is in the field of two-wheeled vehicles or tricycles or rakes (Rosnmahler). Conventional fuel injection devices typically include a fuel pump having a pressure regulator in a fuel tank, wherein the fuel pump delivers fuel at a predetermined pressure into a line, such as a rail or the like. An injector (Injeht〇r) is provided at the end of the pipeline, and the injector is injected by a control device into a suction pipe or directly into a combustion chamber. However, such fuel injection devices are cumbersome and expensive, so they also make small internal combustion engines expensive. An injection unit with electronic control means is disclosed in the European patent EP 1 340 906 B1, in which the injector is arranged in the vicinity of a pump piston. In addition, a pre-pressure valve is provided here to periodically apply a pre-pressure to the fuel at the beginning of a pressure stroke of the piston as the piston returns to the flow line of the fuel tank. Here, the pre-pressure valve evacuates a portion of the fuel in a pressure chamber to the return pipe so that, in particular, the formation of vapor bubbles in the injector can be reduced. However, its construction is complicated, and this device occupies a large construction space. SUMMARY OF THE INVENTION The fuel injection device of the present invention having the characteristics of claim 1 of the invention has an advantage that the construction thereof is very compact, and the fuel injection device of the present invention can be manufactured particularly simply and inexpensively. In addition, according to the present invention, the pumping and pulsing action (Saugpulsati〇n, English: sucking p heart ati〇n) can be reduced, in particular, the generation of vapor bubbles in the fuel supply line can be avoided, and in addition, the fuel injection of the present invention The device is particularly useful in small internal combustion engines, such as on two-wheelers or lawn mowers or the like. According to the invention, the fuel injection device has a fuel pump, a pressure regulator for adjusting the injection pressure, a fuel injector and an air conditioner, which are integrated components of a spray module. . The fuel injection module is a compact, low-profile construction where the pressure regulator is an integral component of the injector. In addition, the fuel injection device includes a suction chamber which is an integrated member of the fuel injection module, and the suction chamber is connected to the fuel pump via a first check valve. Here, the volume of the pump chamber is smaller than the volume of the suction chamber and should be as small as possible. The volume of the pump chamber is particularly ten times smaller than the volume of the suction chamber. A gas-filled region and a fuel-containing fuel region are provided in the suction chamber. The purpose of the gas-filled region is to buffer the Q-absorption pulse of the fuel pump in the suction chamber. In addition, there may be a vapor bubble in the fuel line rising to the gas-filled region of the suction chamber, because the suction chamber is disposed between an opening of the fuel supply line and the fuel pump, where the fuel injection module can be completely Pre-installed, so it only needs to be connected to the required connector and can be built directly into the car. Here, the components of the fuel injection module are preferably arranged in a common housing of the fuel injection module. In addition to the tightness of the fuel injection module, there is another advantage in that other components for the fuel injection module can also be minimized. Appendices to the scope of the patent application show preferred further features of the invention. In addition, the fuel injection device further includes a feedback chamber connected to the pump chamber via a fifth 200944653 check valve. Here, the volume of the feedback chamber should be larger than the volume of the pump chamber, and should be ten times larger. The purpose of the feedback chamber is that if a vapor bubble or vapor bubble has been formed in the pump chamber and is drawn into the pump chamber, the vapor bubble can be guided away from the second check valve (especially at the beginning of the pressure phase of the fuel pump). In the feedback chamber, at one end of a piston of the fuel pump, a control edge is formed which closes a joint of the second check valve during the further movement of the piston to establish a pressure in the pump chamber. The original force-building phase in the spring room was slightly delayed. In a particularly good way, the feedback room also contains a gas-filled area, so that 'there can be two air-filled areas--in the feedback room, one sucking the fuel pump in the suction chamber The pulse action is further reduced. Thus, if vapor bubbles are introduced into the feedback chamber, they are collected in a feedback room. The feedback chamber should be hydraulically set to a common annular chamber so that the construction is particularly simple' and the common chamber has two gas filled zones - one in the feedback zone and one in the suction zone. In addition, it is advantageous to connect the feedback chamber to a fuel tank so that the vapor bubbles folded out of the pump chamber can be returned to the fuel tank. Here, in order to maintain a gas-filled area in the feedback chamber, a tank joint is preferably provided below an uppermost portion of the feedback chamber (not at the uppermost in the vertical direction). According to another variant of the invention, the feedback chamber is connected to an air conditioner. Thus, the vapor bubbles fed into the feedback chamber are led to the suction tube through the circuit air line. Since the air conditioner and the fuel pump or the injector are simultaneously operated during each fuel injection process, the fuel vapor collected in the feedback chamber enters the suction pipe through the air conditioner, so that the fuel injector can be injected into the suction pipe. The amount of fuel in the pipe is less than 200944653. 〇 In order to prevent the liquid fuel line from entering the air regulator, the sub-valve contains a float body that is guided in the line. The road is sealed between the two. The float of the float body used is a position of the air conditioner in the suction pipe. This prevents the engine from connecting the pipe to the air conditioner. A fuel should be provided in the air conditioning. The float can be used as a ball in the suction tube. The fuel is supplied from the return pipe to the feed through the feedback chamber, so that the float body floats in the connection pipe, and, for example, the body. The pilot line should be in an upright position in the direction of flow and from there through the suction valve. The floater body evaporates the tubular body or a throttle cover front chamber on the connector valve chamber through the continuous engine into the surrounding ring, and the connection pipe between the feedback chamber and the air conditioner It is preferred to open to the position of the air conditioner such that an opening of the connecting line is opened or closed by the closing element of the air conditioner. Therefore, the closing member of the air conditioner has the function of opening and closing the connecting passage in addition to the air conditioning (four). If λ ′ if the throttle cover is not completely closed, the fuel can be evaporated to the surrounding surroundings. ... Here, it is particularly desirable to have the connecting line parallel to the opening of an open gas supply pipe to the air conditioner. In this way, a simple and inexpensive construction of the air conditioner can be achieved, and the connecting line can be opened and closed simultaneously with the air conditioner. If this method is not adopted, the connection line can be opened to the air supply line of the air conditioner by 9 degrees. Thus, the opening and the air conditioner can be opened at different times in a simple manner. And closed. 200944653 In addition, it is preferred that the supply from the fuel tank to the suction chamber and the first check valve between the suction chamber and the pump chamber are disposed at mutually offset positions along the axial direction of the oil device. This prevents possible pressure waves (which are transmitted by the fuel line) from being transmitted directly into the pump chamber via the open first check valve. In addition, it prevents the vapor bubbles coming out of the fuel supply line from being directly sucked by the pump, and may first rise in the suction chamber in the direction of the gaseous region in the suction chamber. Here, the staggered "replacement mode is selected such that the first check valve is disposed lower in the horizontal direction of the fuel injection device than the opening of the fuel line in the suction chamber. The injection device should preferably include an actuator that simultaneously operates the fuel pump and the air conditioner. For example, &, in particular, the separate actuators can be omitted to operate the air conditioner or the fuel pump, respectively, so the number of components is significantly reduced. As such, of course, the cost is also reduced. In this way, the common actuator functions as a pump drive and also functions as an adjustment actuator for the air conditioner. In this case, the common actuator can simultaneously operate the fuel pump and the air conditioner, wherein the actuator comprises a coil, a first armature and a second armature, wherein the first electric habitat cooperates with the air conditioner, The two armatures cooperate with the fuel pump and the two armatures can be activated with their common coils. If this is not the case, the air regulator also acts incompatible with the fuel pump. The pressure regulator integrated into the injector preferably comprises an outwardly open valve element and a spring element that prestresses the valve element. In order to regulate the injection pressure, in other words, the injector is formed as an outwardly open injector which is open when a predetermined pressure is applied, wherein the spring force of the spring element is overcome. Here, when the pressure on the injector drops below the operating pressure, the injection action ends. Therefore, the valve element that is open to the outside is affected by the spring element, and is reset to the starting position in 200944653. In order to provide a tightly structured a « „ ^ oil composition, the first armature should be the air conditioner, the second armature should be the part of the fuel pump. The armature is a valve element of the air conditioner# And the first armature is the fuel pump's live
此外，本發明關於一種内 正好二個汽缸以及一本發明的 含一油箱’它設在該喷油模組 設计得很小。 燃機，它包好正好一汽缸或 噴油裝置。該内燃機尤宜包 上方’如此特別是燃料泵可 以下配合附圖詳細說明本發明的實施例。 【實施方式】 以下配合® 1及圖2詳細說明一小型引擎⑴，它具有 第一實施例的本發明喷油裝置。 圖1的示意圖顯示小型引擎（1)的構造，它設計成單汽 缸引擎形成。此小型引擎（1)包含一汽缸（3)、一可在汽缸中 〇 來回運動的活塞（4)、-控制單元（5)及一油箱（6)、油箱⑹ 經一燃料供應管路（6a)與一喷油模組（2)連接。一燃料回授管 路（6a)從該喷油模組（2)回到油箱（6)。如圖一示意方式所 不，油箱（6)設在噴入模組（2)上方。如此，燃料由於重力經 燃料供應管路（6a)進到喷油模組（2)。喷油模組（2)以示意的 方式的圖示。且包含一燃料泵、一具有整合之壓力調節器 的噴油器、及一空氣調節器’因此喷油模組（2)構造很緊密。 此外該小型引擎（1)包含一節流蓋片（7)，它設在一吸取 管（8)中。此外’汽缸（3)上設有一火星塞（9)、一入口閥（1〇) 200944653 及一出口閥（11)。圖號（12)表示空氣的一旁路管路。它將空 氣從吸取管（8)從一區域沿空氣流動方向在節流蓋片（7)前方 分枝並直接進入該整合到噴油模組（2)中的空氣調節器中。 該旁路管路（12)的一出口（ι2ζ)在節流蓋片（7)後方開口於吸 管（8)中。 此外該小型引擎（1)包含一廢氣管路（1 3)，它利用出口閥 (11)開啟或封閉。此外在廢氣管路（13)上設有一氧感測器 (14)，它與控制單元（5)連接，且控制單元（5)再與一冷却水 感測器（15)、一油溫度感測器（16)、及一感測器單元（17)[用 於檢出節流閥位置、吸取管（8)的溫度、及吸取管（8)中的壓 力]連接《在此，控制單元（5)利用所接收的信號控制噴油模 組（2)。 節器、一喷油器、及一空氣調節器的喷油模組形式，且 設計成特別緊密及小構造。此外，本發明的喷油裝置可 廉價地製造且預先呈完整之喷油模組形式特別乾淨倒落 預安裝。目此它只須呈緊密構造組形式建入小型引擎( 中:因此’藉著將該四個的個別部件··燃料泵、壓力調節器 喷油器 '及空氣調節器―整合’可確保製造簡單及廉價， 此，該燃料泵及空氣調節器由一共同 u的動作器動作，如此 舉例而言，本發明的喷油裝置可用於二輪車或别草 (Rasenmaher)的小型引擎中。 知。喷油模組（2)中整合了 噴油器（20c)及空氣調節器 圖2顯示該喷油模組（2)的細 燃料泵（20a)、壓力調節器（2〇b)、 200944653 (20d)，為此設有一多部分殼體（25)(圖2中只作示意顯示）。 在此，壓力調節器（2〇b)係喷油器（20c)的構件。在此，一共 同的動作器同時將燃料泵（2〇a)和空氣調節器（2〇d)動作。此 共同動作器包含一線圈（21)、一第一電樞（22)及一第二電樞 (23)。如圖2所示，該一電柩（22)為空氣調整器（2〇d)的一部 为，其中電樞（22)—端形成一閥元件（22a)，它可在旁路管路 (12)的一閥座（12a)將旁路管路（12)開啟或關閉。此外有一第 一回復彈簧（28)與空氣調整器（20d)配合。此外動作器包含— ® 第二電樞（23)，它在此實施例中係燃料泵（2〇a)的一部分。在 此，第二電樞（23)與燃料泵（20a)的一活塞（26)牢接。如不採 此方式，第二電樞（2 5)與活塞（26)可以只接觸而不作牢接。 第二電樞（23)—圓柱形構件，且在線圈（2丨）内部利用一導引 元件（19)導進。導引元件（19)除了導引功能外，還有支持第 一回復彈簧（28)的功能。圖號（29)表示一非磁性元件，它關 於將線圈（21)的磁鐵回路中斷。在此，如果線圈（21)通道， ❾則它將第一電樞（22)及第二電樞（23)動作。線圈（21)供電停 掉後’第一回復彈簧（28)或第二電樞用的第二回復彈簧再將 二電樞復位到圖2所示的起始位置。在此，第二回復彈簧 支持在一殼艎塊（25a)及第二電樞（23)的一端側上。 如圖2所示，燃料供應管路（6a)和燃料回授管路（6b)設 在殼體（25)上。在此，燃料供應管路（6幻開口到一吸取室（3〇) 中。燃料回授管路（6b)由一回授室（32)出發。在此，吸取室 (3 0)與回授室的趙積用油壓方式互相連接。此外，在殼體塊 (25a)中形成一泵室（3 1)。此果室（3〇)經由孔與吸取室（3〇)、 200944653 回授室（32)或喷油器（20c)或喷油器（20c)的一壓力室（42)連 接。在此’在吸取室（30)與泵室（32)之間設一第一止回閥 (33)。在泵室（31)與壓力室（32)之間設一第二止回閥（34)，且 在泵室（31)與回授室（32)之間設一第三止回閥（35)。在此， 泵室為燃料室（2 Ob)的一部分。如圖2所示，燃料泵的活塞 (26)設在殼體塊（25a)中的方式，使它能將泵室（31)中的流體 施壓。在此活塞（26)與第二電樞（23)牢接。在此，圖2中所 示的位置係在燃料泵（2〇a)的一吸取行程末端的位置。在Further, the present invention relates to a cylinder having exactly two cylinders and a fuel tank of the present invention, which is designed to be small in the fuel injection module. The gas turbine, which packs exactly one cylinder or fuel injection device. The internal combustion engine is particularly preferably packaged above. Thus, in particular, a fuel pump can be described in detail with reference to the accompanying drawings. [Embodiment] A small engine (1) having the fuel injection device of the present invention of the first embodiment will be described in detail below with reference to Fig. 1 and Fig. 2. The schematic of Figure 1 shows the construction of a small engine (1) designed to be formed by a single cylinder engine. The small engine (1) comprises a cylinder (3), a piston (4) movable back and forth in the cylinder, a control unit (5) and a fuel tank (6), and a fuel tank (6) via a fuel supply line (6a) ) is connected to a fuel injection module (2). A fuel return pipe (6a) is returned from the fuel injection module (2) to the fuel tank (6). As shown in Fig. 1, the fuel tank (6) is disposed above the injection module (2). Thus, the fuel enters the fuel injection module (2) through the fuel supply line (6a) due to gravity. The fuel injection module (2) is illustrated in a schematic manner. It also includes a fuel pump, an injector with integrated pressure regulator, and an air conditioner. Therefore, the fuel injection module (2) is constructed very tightly. Furthermore, the small engine (1) comprises a throttle flap (7) which is arranged in a suction tube (8). In addition, the cylinder (3) is provided with a spark plug (9), an inlet valve (1〇) 200944653 and an outlet valve (11). Figure (12) shows a bypass line for air. It branches air from the suction pipe (8) from an area in the direction of air flow in front of the throttle cover (7) and directly into the air conditioner integrated into the fuel injection module (2). An outlet (ι2) of the bypass line (12) opens into the suction tube (8) behind the throttle flap (7). Furthermore, the small engine (1) comprises an exhaust gas line (13) which is opened or closed by means of an outlet valve (11). In addition, an oxygen sensor (14) is disposed on the exhaust gas line (13), which is connected to the control unit (5), and the control unit (5) is further coupled with a cooling water sensor (15), an oil temperature sense. Detector (16), and a sensor unit (17) [for detecting the position of the throttle valve, the temperature of the suction tube (8), and the pressure in the suction tube (8)] "here, the control unit (5) The fuel injection module (2) is controlled by the received signal. A fuel injection module in the form of a throttle, an injector, and an air conditioner, and designed to be particularly compact and small in construction. In addition, the fuel injection device of the present invention can be manufactured inexpensively and in advance in the form of a complete fuel injection module, which is particularly clean and pre-installed. In this way, it only needs to be built into a small engine in the form of a tight structural group (middle: therefore, 'by integrating the four individual components, the fuel pump, the pressure regulator injector, and the air conditioner' to ensure manufacturing) Simple and inexpensive, the fuel pump and the air conditioner are operated by a common u-actuator. For example, the fuel injection device of the present invention can be used in a two-wheeled vehicle or a small engine of Rasenmaher. Injector (20c) and air conditioner integrated in the oil module (2). Figure 2 shows the fine fuel pump (20a), pressure regulator (2〇b), 200944653 (20d) of the fuel injection module (2) For this purpose, a multi-part housing (25) is provided (shown schematically in Fig. 2). Here, the pressure regulator (2〇b) is a component of the injector (20c). Here, a common The actuator simultaneously operates the fuel pump (2〇a) and the air conditioner (2〇d). The common actuator includes a coil (21), a first armature (22) and a second armature (23). As shown in FIG. 2, the electric cymbal (22) is a part of the air conditioner (2〇d), wherein the armature (22)-end forms a valve element. (22a), which can open or close the bypass line (12) in a valve seat (12a) of the bypass line (12). In addition, a first return spring (28) cooperates with the air regulator (20d). Furthermore, the actuator comprises - a second armature (23), which in this embodiment is part of a fuel pump (2〇a), here a second armature (23) and a fuel pump (20a) The piston (26) is firmly connected. If this is not the case, the second armature (25) and the piston (26) can only be in contact without being firmly connected. The second armature (23) - cylindrical member, and in the coil ( 2)) The inside is guided by a guiding element (19). In addition to the guiding function, the guiding element (19) also has the function of supporting the first return spring (28). Figure (29) shows a non-magnetic element. It is about interrupting the magnet circuit of the coil (21). Here, if the coil (21) is in the channel, it will act on the first armature (22) and the second armature (23). The coil (21) is powered off. After the fall, the first return spring (28) or the second return spring for the second armature resets the two armatures to the starting position shown in Figure 2. Here, the second return spring is supported at On one end side of the shell block (25a) and the second armature (23), as shown in Fig. 2, a fuel supply line (6a) and a fuel return line (6b) are provided on the casing (25). Here, the fuel supply line (6 is opened into a suction chamber (3〇). The fuel feedback line (6b) is started by a feedback chamber (32). Here, the suction chamber (30) and back The Zhao Ji of the teaching room is connected to each other by hydraulic pressure. In addition, a pump chamber (3 1) is formed in the housing block (25a). This fruit chamber (3〇) is returned through the hole and the suction chamber (3〇), 200944653 The pressure chamber (42) of the chamber (32) or the injector (20c) or the injector (20c) is connected. Here, a first check valve (33) is provided between the suction chamber (30) and the pump chamber (32). A second check valve (34) is disposed between the pump chamber (31) and the pressure chamber (32), and a third check valve (35) is disposed between the pump chamber (31) and the feedback chamber (32). ). Here, the pump chamber is part of the fuel chamber (2 Ob). As shown in Fig. 2, the piston (26) of the fuel pump is disposed in the housing block (25a) in such a manner as to pressurize the fluid in the pump chamber (31). Here the piston (26) is in close contact with the second armature (23). Here, the position shown in Fig. 2 is at the end of a suction stroke of the fuel pump (2〇a). in
此，泵室（31)、第一電樞（22)及第二電樞（23)在一共同轴χ χ Q 上。 如圖2所示，第三止回閥（35)沿喷油模組（2)的轴方向 x-x設在比第一止回閥（33)更接近線圈（21)的一位置。 〇 在此，第二止回閥（35)用於在壓力階段開始時可將可 能存在的氣泡從泵室(31)送出，進入到回授室(32)中。在此 活塞（26)的末端構成—控制緣（26a)，它在活塞（26)運動的進 -步過程中將第三止回閥（35)的接頭封閉。因此如此在 泵室(31)中的燃料之原來壓力建構階段開始。此外，第二止 回閥（3句設計成他從泵室（31)内的—小小過壓力起就開放。 因此，燃料可流入喷油器(2〇c)的壓入室(42)。喷油器 (」[匕同時也包含壓力調節器(2〇b)以調節喷油壓力]從壓 至(42)巾預疋壓力起就著彈簧元件⑷)的力量打 中閥元件（40)為一向外 丹 料喷入吸取管（5)中/間①件。在此喷油器（2〇C)將燃 如圖3所示’吸取室(30)的上端(沿垂直方向的上端)有 12 200944653 一充以氣體的區域（30a)。上充以氣體的區域（30&)當作緩衝 墊。以將從燃料供應管路（6a)回到吸取室（3〇)的壓力波緩 衝。在此，圖號（3 Ob)表示該吸取管的一個充以液體燃料的 區域。此外如圖2所示’燃料供應管路（6a)的一開口設在吸 取室（30)的一位置，此位置沿垂直方向位於比第一止回閥 (33)更接近線圈（21)之處《如此可防止壓力波及蒸氣泡從燃 料應管路直接進一步導入或吸到泵室（31)中。在此，來自燃 料供應管路蒸氣泡可毫無問題地向上氣化掉。而壓力波則 © 先被殼體塊（25a)彈回然後利用氣態的區域（3〇a)—齊緩衝。 在回授室（32)中以相似方式設一充以氣體的區域 (32a)。在此實施例中，回授室（32)和吸取室（30)構成一大致 環形的共同的室，其中央設有殼體塊（25 a)或線圈（21)。在 此，該共同室的一半形吸取室（30)，另一半形成回授室（32)。 吸取室（30)和回授室（32)的共同空間體積為泵室（3丨）的體積 的倍數’例如為其總體積的十倍。在此，燃料回授管路（6b) φ 如圖2所示，不設在回授室（32)的上端，而且在其下方一點 的地方’俾防止回授室（32)内的氣體緩衝墊直接被導回油箱 中〇 在此，本發明的喷油模組（2)的功能如下：燃料果（2〇a) 的吸取階段經第二回復元件（24)進入，其中第二回復元件 (24)的復位作用定義出吸取的終點。在吸取階段時，第一止 回閥（33)開放’第二止回閥（34)與第三止回閥（35)關閉。如 此，燃料可經開放的第一止回閥（33)流入泵室（3 1}中。然後 將線圈通電’因此第二電樞（23)沿箭頭A方向運動，俾使杲 13 200944653 ， 室（31)中的流體受壓力。如此’第一止回閥（3 3)關閉，且只 要栗室（3 1)中還有小小壓力位置，則第二止回閥（34)同樣保 持關閉。在壓力階段開始時，第三止回閥（35)打開，俾將可 能存在泵室（31)中的氣體推出到回授室（32)中。一旦活塞（26) 的控制緣（26a)將第三止回閥（35)的接頭完全封閉，則在栗室 (31)中開始建立壓力。如此，從一預定壓力位準起，第二止 回閥（34)就打開’因此受壓力的流體可流入喷油器（2〇)的壓 力室（42)中’且從一預定壓力位準起就由該處獨立喷入。隨 著燃料泵（20a)動作，在線圈（21)通電時，空氣調整體（2〇d) 的第一電樞（22)也沿箭頭B方向被吸引。如此，空氣調節器 (20d)開放’因此空氣可流經旁路管路（12)，如此，空氣經由 出口（12z)流到吸取管（8)。 在喷油完成後，將線圈（21)的通電終止。因此回復彈簧 (24)及（28)將第一及第二電樞（22)(23)再復位其起始位置。如 此，空氣調整器（20d)再關閉，且在第二電樞（23)回復時活塞 (26)—齊被拉回，因此再開始吸取程序。要注意，回復彈簧 (24)及（28)的回復力#設計成使得#線圈（21)只通以小電流 時，空氣調節器（2〇d)也可分別動作，而不將燃料果動作。 此時，燃料泵（20a)的吸取脈動作用—如上述―利用該態 區域㈣[它在吸取室⑽中呈緩衝墊的作用]緩衝。此外： 在供應管路中，由於燃料泵（2〇a)週期性的吸取造成的干擾 性燃料蒸氣可受防止以免-直侵人到泵室⑼中。如果在燃 料供應管路_中產生蒸氣泡，則它們由於吸取室⑽的體 積大而在吸取室⑽中向上跑掉1因此不會被燃料泵（術） 200944653 , 吸取。此外，由於在回授室（32)中也設有緩衝墊（32a)e故在 回授室（32)中造成儲存作肖，因此產生低壓的作用以及脈動 傳播到燃料供應管路中的作用減少。因此產生蒸氣泡的傾 向變此外，回授室（32)中的燃料醴積也同樣可減少泵室 (3 1)中蒸乳泡形成的傾向。 因此依本發明可提供一種緊密喷油裝置，其中形成蒸 氣泡之虞減少。且特別可避免蒸氣泡經喷油器（2〇c)喷入吸 ❹取管（8)中。且因此使所需之喷入燃料量由於蒸氣泡一齊噴 入而被混淆的情事。 此外’噴油模組（2)有一共同動作器以將燃料泵（2〇a)和 空氣調整體（20d)動作。如此，只需一個線圈及第一電末端 級[它具有配線進入燃料泵（2〇a)及空氣調整器（2〇b)中]。此 外，空氣調整器（20d)在小型引擎（1)的一些操作狀態[在這些 狀態中該空氣調整器不一定需要]可確保雖然和燃料泵（2〇a) 共用動作器但燃料泵（2〇a)的動作不會延遲或受到其他方式 Q 妨礙。在此，在本實施例中係將一磁動作器藉著將一線圈 通電當作動作器。但要注意，基本上也可使用其他可能的 動作器。例如壓電（Piezo)或動作器。此外要注意，上述定 義調整器（20d)的關閉元件（22a)也可設計成變細窄端區域的 方式’特別是電樞（22)的錐形端區域。或呈任何其他方式， 例如球體或部分球艎的方式。 以下配合圖3詳述本發明一第二實施例的一喷油裝置 (1) ^相同或功能相同的部件用與第一實施例相同的圖號表 7[\ 〇 15 200944653 此第二實施例大致相當於第一實施例，其中與第一實 施例不同者，在第二實施例中，不設有接到油箱的燃料回 授管路。取而代之者，如圖3所示，係在回授室（32)與空氣 調節器（20d)[更正確地說，是與一室（12b)]之間在空氣調節 器的區域中設一連接管路（50)。此外設有一浮子閥（5)，它設 在該連接管路（50)中。浮子閥（5丨）包含一浮球（52)，它可受 一般上升的液柱壓迫頂向連接管路（5〇)中的一閥座（53)。如 此連接管（50)可關閉。浮子闊（51)防止液體燃料跑入空氣調 整器並因此使回授室（32)與空氣調整器（2〇d)之間的連接管 路堵住。在此’浮球（52)的直徑使它設在回授室（32)的區域 在連接管路（50)下方，而與回授室間留有縫隙，因此蒸氣泡 可毫無問題地在浮球（52)上跑越過去。 如果此時稍微形成蒸氣泡，則回授室（32)中燃料位面上 升。因此浮球（52)將閥座（53)封閉。如此，不會有燃料蒸氣 空氣調整器（20d)跑到吸取管（8)，因此吸入模組只將燃料經 喷油器（20c)喷入。 在此’浮子閥（51)沿喷油模組（2)的軸方向χ_χ的設置 方式選設成，使得可確保在吸取室（3〇)[它平行於回授室（32) 設置]中在區域（30a)留著一氣體的體積空間。如此，在吸取 室（30)中的緩衝功能可以保持。 由於喷入模組（2)同時將燃料泵（20a)和空氣調節器（2〇d) 動作，因此可能存在的燃料蒸氣可經連接管路（5〇)及空氣調 節器（20d)的導離管路（l2z)送入吸取管（8)中。如此，燃料經 喷油器（20c)喷入的量減少。 200944653 圖4顯示依本發明一第三實施例該浮子閥（51)的一變 更設計的-視圖。如圖4所示，浮子閥（51)設計成具有一分 別的密封元件（55)的浮體（54)形式。除此之外此實施例相 當於第二實施例。因此其細節可參考以上說明。 圖5顯示本發明第四實施例的一喷油模組（2)，相同的 或功能相同的部件用與以上實施例相同的圖號表示。 此第四實施例大致相當於第二實施例，其中與第二實 施例不同者，該連接管路（50)開口到空氣調節器（2〇d)的區域 設計成不同。如圖5所示，連接管路（5〇)的開口（5〇a)設置成 使它平行於空氣調節器（2〇d)的空氣的旁路管路（2)的一開 口。空氣調節器（20d)的閥關閉元件（22a)有較大的直徑且同 時將回授室（32)及空氣節器的室〇215)之間的連接管路（5〇) 以及供應管路（12)(見圖5)封閉。如果此時線圈（21)通電，則 閥關閉元件（22a)同時將供應管路（12)及連接管路（5〇)開 放。如此可確保，燃料蒸氣只有當空氣調節器（22d)動作時 φ 才會經空氣調節器（22d)到吸取管（8)，在此，空氣調節器（22d) 只在引擎操作時動作，因為只有此時才連蒸氣、空氣混合 物也吸取《因此，在引擎靜止狀態時，可能發生的燃料蒸 氣留在連接管路（50)或回流室（32)中，因此可確保在引擎靜 止狀態時’燃料蒸氣不會吸出。 因此留著燃料蒸氣經由空氣調節器（2〇d)一同利用，此 外可省却回授到油箱的燃料回授管路。此外，此實施例和 前面實施例相當。因此細節可參考後者的說明。 圖6顯示本發明第五實施的一喷油模組，其中相同 17 200944653 ' 或功能相同的部件用與前面實施例相同之圖號表示。 此第五實施例大致相當於第四實施例，其中與之不同 者為連接管路（50)到空氣調節器（20d)的開口（50a)不同，如 圖6所示，連接管路（5〇)相對於空氣供應管路（2)呈90。開 口到室（12b)中。由於空氣調節器（2〇d)的閥元件的直徑設計 成使它涵蓋室（12b)的整個面積。因此閥元件（22d)的一側面 (22c)用於將連接管路（50)的開口（5〇a)開放或關閉。在此， 在殼體（25)中設有一小的肩部（25b)之用。因此空氣供應管路 (12)和連接管路（50)在不同時間開放。在此，開放的順序為：0 空氣管路（12)先開放，然後連接管路（5〇)開放。因此閥元件 (22a)有移動器的功能’因此可用簡單方式使用開放時間錯 開。在此要注意，當然也可省却殼體中的肩部（25b)且開口 設在室（12b)中，使它直接設在室的上區域，如此’可使空 氣供應管路（12)與連接管路（5〇)同時開放，此外此實施例相 當於前面實施例，因此細節可參考後者的說明。 【圖式簡單說明】 圖1係具有依本發明第一實施例的喷油装置的一小型 〇 引擎的示意圖； 圖2係依第一實施例的喷油裝置的一示意圖； 圖3係依第一實施例的喷油裝置的一示意圖； 圖4係依一第三實施例的喷油裴置的一禾意圖； 圖5係依一第四實施例的噴油裝置的一禾意圖； 圖6係依一第五實施例的喷油裝置的一杀意圖。 【主要元件符號說明】 18 200944653Thus, the pump chamber (31), the first armature (22) and the second armature (23) are on a common axis χ Q . As shown in Fig. 2, the third check valve (35) is disposed closer to the coil (21) than the first check valve (33) in the axial direction x-x of the fuel injection module (2). 〇 Here, the second check valve (35) is used to send possible air bubbles from the pump chamber (31) to the feedback chamber (32) at the beginning of the pressure phase. At the end of the piston (26) is formed a control rim (26a) which closes the joint of the third check valve (35) during the further step of the movement of the piston (26). Therefore, the original pressure construction phase of the fuel in the pump chamber (31) is thus started. In addition, the second check valve (three sentences is designed such that he opens from a small overpressure in the pump chamber (31). Therefore, fuel can flow into the press-in chamber (42) of the injector (2〇c). The fuel injector ("[匕 also contains a pressure regulator (2〇b) to adjust the injection pressure] from the pressure to the (42) towel preload pressure on the spring element (4)) hit the valve element (40) Spray an outer material into the middle/small pipe (5). The injector (2〇C) will burn the upper end of the suction chamber (30) as shown in Figure 3 (upper end in the vertical direction). There is 12 200944653 a gas-filled area (30a). The gas-filled area (30 &) is used as a cushion to buffer the pressure wave from the fuel supply line (6a) back to the suction chamber (3〇). Here, the figure number (3 Ob) indicates a liquid fuel-filled area of the suction pipe. Further, as shown in FIG. 2, an opening of the fuel supply line (6a) is provided at a position of the suction chamber (30). This position is located closer to the coil (21) than the first check valve (33) in the vertical direction. "This prevents pressure waves and vapor bubbles from being directly introduced or sucked from the fuel line. In the chamber (31), the vapor bubbles from the fuel supply line can be vaporized upwards without any problem. The pressure waves are first bounced back by the housing block (25a) and then utilized in the gaseous region (3〇a - a buffer. A gas filled region (32a) is provided in a similar manner in the feedback chamber (32). In this embodiment, the feedback chamber (32) and the suction chamber (30) form a substantially annular shape. The common chamber is provided with a housing block (25a) or a coil (21) at the center. Here, the half chamber of the common chamber forms a suction chamber (30), and the other half forms a feedback chamber (32). The suction chamber (30) The common space volume with the feedback chamber (32) is a multiple of the volume of the pump chamber (3 ') 'for example, ten times its total volume. Here, the fuel feedback line (6b) φ is as shown in FIG. , not at the upper end of the feedback room (32), and at a point below it, 'the gas cushion in the feedback prevention chamber (32) is directly guided back into the oil tank. Here, the fuel injection mold of the present invention The function of group (2) is as follows: the suction phase of the fuel fruit (2〇a) enters via the second recovery element (24), wherein the resetting action of the second recovery element (24) is defined The end point of the suction. During the suction phase, the first check valve (33) opens and the second check valve (34) and the third check valve (35) are closed. Thus, the fuel can be opened through the first check. The valve (33) flows into the pump chamber (3 1}. The coil is then energized' so the second armature (23) moves in the direction of arrow A, causing the fluid in the chamber (31) to be pressurized. The first check valve (3 3) is closed and the second check valve (34) remains closed as long as there is a small pressure position in the chest chamber (31). At the beginning of the pressure phase, the third check The valve (35) is opened and the gas that may be present in the pump chamber (31) is pushed out into the feedback chamber (32). Once the control rim (26a) of the piston (26) completely closes the joint of the third check valve (35), pressure build up begins in the chest chamber (31). Thus, from a predetermined pressure level, the second check valve (34) opens 'so that pressurized fluid can flow into the pressure chamber (42) of the injector (2) and from a predetermined pressure level It will be sprayed separately from this place. As the fuel pump (20a) operates, the first armature (22) of the air-conditioning body (2〇d) is also attracted in the direction of the arrow B when the coil (21) is energized. Thus, the air conditioner (20d) is open so that air can flow through the bypass line (12) such that air flows to the suction tube (8) via the outlet (12z). After the fuel injection is completed, the energization of the coil (21) is terminated. The return springs (24) and (28) then reset the first and second armatures (22) (23) to their starting positions. Thus, the air conditioner (20d) is closed again, and the piston (26) is pulled back when the second armature (23) is returned, so the suction process is started again. It should be noted that the restoring forces # of the return springs (24) and (28) are designed such that when the #coil (21) is only passed through a small current, the air conditioner (2〇d) can also be operated separately without acting on the fuel. . At this time, the suction pulse action of the fuel pump (20a) is buffered by the state (4) [which acts as a cushion in the suction chamber (10) as described above. In addition: In the supply line, the interfering fuel vapor due to the periodic suction of the fuel pump (2〇a) can be prevented from intruding into the pump chamber (9). If vapor bubbles are generated in the fuel supply line _, they run up in the suction chamber (10) due to the large volume of the suction chamber (10) and thus are not sucked by the fuel pump 200944653. In addition, since the cushion (32a) e is also provided in the feedback chamber (32), the storage is caused in the feedback chamber (32), so that a low pressure is generated and the pulsation propagates into the fuel supply line. cut back. Therefore, the tendency of the vapor bubbles to change is also increased, and the fuel accumulation in the feedback chamber (32) can also reduce the tendency of the formation of the evaporated emulsion in the pump chamber (31). Thus, in accordance with the present invention, a compact fuel injection device can be provided in which the formation of vapor bubbles is reduced. In particular, it is possible to prevent vapor bubbles from being injected into the suction tube (8) via the injector (2〇c). And thus the amount of fuel injected required is confused by the simultaneous injection of vapor bubbles. Further, the fuel injection module (2) has a common actuator to operate the fuel pump (2〇a) and the air conditioner (20d). Thus, only one coil and the first electrical end stage [which has wiring into the fuel pump (2〇a) and the air conditioner (2〇b)] is required. In addition, the air conditioner (20d) is in some operating states of the small engine (1) [the air conditioner is not necessarily required in these states] to ensure that although the fuel pump (2〇a) shares the actuator but the fuel pump (2) The action of 〇a) is not delayed or interfered with by other methods. Here, in the present embodiment, a magnetic actuator is used as an actuator by energizing a coil. However, it should be noted that basically other possible actuators can also be used. For example, piezoelectric (piezo) or an actuator. Furthermore, it is to be noted that the closing element (22a) of the above-described definition adjuster (20d) can also be designed in such a way as to narrow the narrow end region, in particular the tapered end region of the armature (22). Or in any other way, such as a sphere or part of a ball. Hereinafter, a fuel injection device (1) according to a second embodiment of the present invention will be described in detail with reference to FIG. 3. The same or identical functional components are the same as those of the first embodiment. Table 7 [\ 〇 15 200944653 This second embodiment Roughly equivalent to the first embodiment, in which, unlike the first embodiment, in the second embodiment, no fuel feedback line to the fuel tank is provided. Instead, as shown in Figure 3, a connection tube is provided in the area of the air conditioner between the feedback chamber (32) and the air conditioner (20d) [more correctly, with a chamber (12b)] Road (50). Furthermore, a float valve (5) is provided which is arranged in the connecting line (50). The float valve (5丨) includes a float (52) that is pressed against a valve seat (53) in the top connecting line (5〇) by a generally rising liquid column. The connecting tube (50) can be closed. The float is wide (51) to prevent liquid fuel from entering the air conditioner and thereby blocking the connection between the feedback chamber (32) and the air conditioner (2〇d). Here, the diameter of the 'float ball (52) is such that it is located in the area of the feedback chamber (32) below the connecting line (50), leaving a gap with the feedback chamber, so that the vapor bubble can be used without problems. The float (52) runs over. If a vapor bubble is slightly formed at this time, the fuel level in the feedback chamber (32) rises. The float (52) thus closes the valve seat (53). Thus, there is no fuel vapor air conditioner (20d) running to the suction pipe (8), so the suction module only injects fuel through the injector (20c). Here, the setting of the 'float valve (51) along the axial direction of the fuel injection module (2) is selected so that it can be ensured in the suction chamber (3〇) [which is parallel to the feedback chamber (32) setting] A volume of gas is left in the area (30a). Thus, the buffering function in the suction chamber (30) can be maintained. Since the injection module (2) simultaneously operates the fuel pump (20a) and the air conditioner (2〇d), there may be a fuel vapor that can be guided through the connecting line (5〇) and the air conditioner (20d). It is sent to the suction pipe (8) from the pipe (l2z). Thus, the amount of fuel injected through the injector (20c) is reduced. 200944653 Figure 4 shows a modified design view of the float valve (51) in accordance with a third embodiment of the present invention. As shown in Figure 4, the float valve (51) is designed in the form of a floating body (54) having a separate sealing element (55). Other than this, this embodiment is equivalent to the second embodiment. Therefore, the details can be referred to the above description. Fig. 5 shows a fuel injection module (2) according to a fourth embodiment of the present invention, and the same or functionally identical components are denoted by the same reference numerals as in the above embodiment. This fourth embodiment is roughly equivalent to the second embodiment, in which, unlike the second embodiment, the area of the connecting duct (50) opening to the air conditioner (2〇d) is designed to be different. As shown in Fig. 5, the opening (5〇a) of the connecting pipe (5〇) is disposed such that it is parallel to an opening of the bypass line (2) of the air of the air conditioner (2〇d). The valve closing member (22a) of the air conditioner (20d) has a larger diameter and at the same time connects the connection line (5〇) between the feedback chamber (32) and the chamber 215) of the air conditioner and the supply line (12) (see Figure 5) closed. If the coil (21) is energized at this time, the valve closing member (22a) simultaneously opens the supply line (12) and the connecting line (5〇). This ensures that the fuel vapor passes through the air regulator (22d) to the suction pipe (8) only when the air conditioner (22d) is actuated, where the air regulator (22d) only operates when the engine is operating because Only then does the vapor and air mixture draw. "Thus, when the engine is at a standstill, fuel vapors that may occur remain in the connecting line (50) or the return chamber (32), thus ensuring that when the engine is at a standstill' Fuel vapor will not be sucked out. Therefore, the fuel vapor is used together with the air conditioner (2〇d), and the fuel return line fed back to the tank can be omitted. Moreover, this embodiment is comparable to the previous embodiment. Therefore, the details can be referred to the latter description. Fig. 6 shows a fuel injection module according to a fifth embodiment of the present invention, wherein the same 17 200944653 ' or functionally identical components are denoted by the same reference numerals as in the previous embodiment. This fifth embodiment is roughly equivalent to the fourth embodiment, except that the opening (50a) of the connecting pipe (50) to the air conditioner (20d) is different, as shown in FIG. 6, the connecting pipe (5) 〇) is 90 with respect to the air supply line (2). Open into the chamber (12b). Since the diameter of the valve element of the air conditioner (2〇d) is designed such that it covers the entire area of the chamber (12b). Therefore, a side surface (22c) of the valve member (22d) is used to open or close the opening (5〇a) of the connecting pipe (50). Here, a small shoulder (25b) is provided in the housing (25). Therefore, the air supply line (12) and the connecting line (50) are open at different times. Here, the order of opening is: 0 The air line (12) is opened first, and then the connecting line (5〇) is opened. Therefore, the valve element (22a) has the function of a mover' so that the open time can be used in a simple manner. It should be noted here that it is of course also possible to dispense with the shoulder (25b) in the housing and the opening in the chamber (12b) so that it is placed directly in the upper region of the chamber so that the air supply line (12) can be The connecting line (5 turns) is simultaneously open, and this embodiment is equivalent to the previous embodiment, so the details can be referred to the latter description. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view of a small sputum engine having a fuel injection device according to a first embodiment of the present invention; Fig. 2 is a schematic view of a fuel injection device according to a first embodiment; Figure 4 is a schematic view of a fuel injection device according to a third embodiment; Figure 5 is an illustration of a fuel injection device according to a fourth embodiment; Figure 6 It is an intention of the fuel injection device according to a fifth embodiment. [Main component symbol description] 18 200944653
(i) 小型引擎 (2) 喷油模組 (3) 汽缸 (4) 活塞 (5) 控制單元 (6) 油箱 (6a) 燃料供應管路 (6b) 燃料回授管路 (7) 節流蓋片 (8) 吸取管 (9) 火星塞 (10) 入口閥 (11) 出口閥 (12) 空氣的旁路管路 (12a) 閥座 (12b) 室 (12z) 出口（導離管路） (13) 廢氣管路 (14) 氧管測器 (15) 冷卻水感測器 (16) 油溫度感測器 (17) 感測器單元 (19) 導引元件 (20a) 燃料泵 19 200944653 (20b) 壓力調節器 (20c) 喷油器 (20d) 空氣調節器 (21) 線圈 (22) 第一電樞 (22a)(22d) 關閉元件（閥元件） (23) 第二電樞 (24) 第二回復元件（回復彈簧） (25) 殼體 (25a) 殼體塊 (25b) 肩部 (26) 活塞 (26a) 控制緣 (28) 回復彈簧（回復元件） (29) 非磁性元件 (30) 吸取室 (30a) 充以氣體的區域 (30b) 充以波體燃料的區域 (31) 泵室 (32) 回授室 (32a) 充以氣體的區域 (33) 第一止回閥 (34) 第二止回閥 (35) 第三止回閥 200944653 (40) 閥元件 (40a) 閥座 (41) 彈簧元件 (42) 壓力室 (50) 連接管路 (50a) 開口 (51) 浮子閥 (52) 浮球 (53) 閥室 〇 21(i) Small engine (2) Fuel injection module (3) Cylinder (4) Piston (5) Control unit (6) Fuel tank (6a) Fuel supply line (6b) Fuel feedback line (7) Throttle cover Sheet (8) Suction tube (9) Mars plug (10) Inlet valve (11) Outlet valve (12) Air bypass line (12a) Seat (12b) Chamber (12z) Outlet (drainage line) ( 13) Exhaust pipe (14) Oxygen pipe detector (15) Cooling water sensor (16) Oil temperature sensor (17) Sensor unit (19) Guide element (20a) Fuel pump 19 200944653 (20b Pressure regulator (20c) Injector (20d) Air regulator (21) Coil (22) First armature (22a) (22d) Closing element (valve element) (23) Second armature (24) Two return element (return spring) (25) Housing (25a) Housing block (25b) Shoulder (26) Piston (26a) Control edge (28) Return spring (recovery element) (29) Non-magnetic element (30) Suction chamber (30a) Gas filled area (30b) Filled with wave fuel area (31) Pump chamber (32) Feedback chamber (32a) Gas filled area (33) First check valve (34) Second check valve (35) third check valve 2009 44653 (40) Valve element (40a) Seat (41) Spring element (42) Pressure chamber (50) Connection line (50a) Opening (51) Float valve (52) Float (53) Valve chamber 〇 21