200303958200303958
CD 玖、發明說明 【發明所屬之技術領域】 本發明，係關於朝向內燃機（以下，稱爲引擎）的吸 氣通路噴射燃料之燃料噴射控制裝置，特別係有關做爲供 結燃料的驅動源，使用包含藉由往復移動而進行吸引及加 壓的柱塞栗浦之注入模組（噴射模組）的燃料噴射控制裝 置。 【先前技術】 做爲被裝載在車輛之引擎的燃料噴射系統，通常是利 用電子控制燃料噴射系統。在該控制系統，係將引擎之旋 轉速度、吸入空氣量、引擎的水溫、節流閥開度、吸氣壓 力、〇2濃度等各種資訊由察覺器檢出，根據所檢出之資 訊以引擎控制單元（ECU)，算出其每瞬間的引擎之運轉 狀態，將最適切的點火時機，混合率（燃料噴射量、吸入 空氣量）等，從事先由實驗被求得之控制圖讀出，根據被 讀出的控制信號將注入器、點火線圏等驅動控制，而控制 燃料噴射量、噴射時機、點火時機等者。 例如，圖7所示，根據引擎之旋轉速度（旋轉數）， 與根據吸入空氣量等的資訊而被決定之引擎旋轉同步噴射 (同步噴射）的基本燃料噴射量，和根據引擎水溫、節流 閥開度、吸氣壓力、〇2濃度等之資訊’被判斷引擎在高 負載狀態、加速狀態、暖機狀態等的運轉狀態時，將不拘 引擎之旋轉而爲了進行增量修正從將噴射的修正燃料噴射 -5- (2) (2)200303958 量，決定實際噴射之實燃料噴射量。 然後，當同步噴射的時機與非同步噴射之時機重疊時 ，在已往的注入器，係進行實噴射時間之加法處理。在注 入器，因藉由燃壓調整器而內部的燃壓被保持一定，即使 在閉閥動作中被進行開閥指令’也能進行正確之噴射。 另一方面，做爲被適用在機車等所裝載的引擎之燃料 噴射系統，例如在特開平200 1 -22 1 1 3 7號公報所揭示，已 知有將從燃料槽導引至進給管的燃料，利用呈一體地或呈 H 獨立個體地具備有電磁驅動型之柱塞泵及噴射噴嘴的注入 模組（IM )，吸引及加壓而噴射到吸氣通路內者。 做爲噴射模組之動作特性（IM舉動），如圖8所示， 一旦被發出脈波狀的驅動信號時，係以：藉由柱塞把燃料 加壓之加壓行程（開閥行程）P ;噴射被加壓成預定水準 的燃料之噴射行程I ;柱塞藉由彈簧的推力而一面回復至 休止位置一面將燃料吸引之吸引行程（關閉行程）S的三 個行程來完成1次之燃料噴射。 # 〔發明所要解決之課題〕 可是，在使用這種注入模組的燃料噴射系統，如果應 ， 用以往的這種非同步噴射時，特別當同步噴射處於吸引行 程S (關閥開始〜關閥結束爲止的關閥行程）時，如果非同 步噴射之時機重疊的話，在燃料的吸引尙未結束之時刻， 將再移行至噴射行程，因此無法正確地控制燃料噴射量。 本發明，係鑑於上述之問題點而開發完成者，其目的 -6 - (3) (3)200303958 係在：針對使用以柱塞泵做爲供給燃料的驅動源之注入模 組的燃料噴射系統，提供能夠因應引擎之運轉狀態高精確 度地控制燃料的噴射量之燃料噴射控制裝置。 【發明內容】 〔爲了解決課題之方法〕 本發明之燃料噴射控制裝置，係備有利用由加壓 行程、噴射行程，及吸引行程吸引行程所組成的柱塞之往 復動作而將燃料噴射的注入模組；和控制與內燃機之旋轉 同步而將燃料噴射的同步噴射及對應內燃機之運轉狀態進 行噴射燃料的修正之非同步噴射的控制手段之燃料噴射控 制裝置，其特徵爲：上述控制手段係包含：判定同步噴射 和非同步噴射的相對性之時機的判定手段；和根據判定手 段之資訊調整同步噴射與非同步噴射之間的噴射時機之調 整手段。 依據本構成時，判定手段將判定同步噴射與同步噴射 是處在何種時機關係，亦即，非同步噴射和同步噴射是否 重疊在一起，並且，如果是重疊的話，非同步噴射和同步 噴射是在各自的加壓行程、噴射行程、吸引行程的那一個 領域中重疊在一起。然後，依據這種判定資訊，調整手段 會將非同步噴射與同步噴射的時機，調整到最適當的時機 。由此，能夠控制成使之成爲對應內燃機的運轉狀態之最 適當的燃料噴射量。 在上述構成中，能夠採用：當判定手段判定出非同步 (4) (4)200303958 噴射的時機重疊在同步噴射之加壓行程或噴射行程時，調 整手段將在同步噴射的噴射時間之後，進行將非同步噴射 的噴射時間加上去之加法處理，當判定手段判斷出非同步 噴射的時機與同步噴射之吸引行程重疊時，調整手段將進 行使非同步噴射的開始時期延遲至同步噴射之吸引行程結 束爲止的延遲處理之構成方式。 根據本構成方式時，因在同步噴射的噴射時間上又被 加入非同步噴射之噴射時間，可確實地噴射出被要求的燃 料（基本燃料噴射量+修正燃料量）。並且，因在同步噴 射之吸引行程結束後才開始非同步噴射，所以在非同步噴 射期間中將進行完全的加壓行程。由此，將可確實地進行 所要求之增量修正等。 在上述構成方式中，能採用：當判定手段判定出在非 同步噴射的加壓行程或噴射行程中，同步噴射之時機重疊 時，調整手段將進行在非同步噴射的噴射時間之後加上同 步噴射的噴射時間之加法處理，當判定手段判斷出在非同 步噴射的吸引行程中，同步噴射的時機重疊時，調整手段 將進行使同步噴射之開始時期延遲至非同步噴射的吸引行 程結束爲止之延遲處理的構成方式。 根據這種構成方式，因在非同步噴射的噴射時間又被 加上其後接續之同步噴射的噴射時間，所以將可確實地噴 射出所要求之燃料（修正燃料量+基本噴射燃料量）。並 且，因在非同步噴射的吸引行程結束後才開始同步噴射， 在同步噴射中將進行完全之加壓行程。由此，將可確實地 -8- (5) (5)200303958 噴射出所要求的燃料（基本燃料噴射量）。 【實施方式】 〔發明之實施形態〕 以下，根據附圖說明本發明之實施形態。 圖1係顯示備有本發明的燃料噴射控制裝置之燃料噴 射系統的槪略之構成圖，圖2至圖6係顯示各種噴射曲線的 時間圖。 本燃料噴射系統，係如圖1所示，備有燃料槽1，被配 置在引擎2的吸氣通路2a將燃料噴射之注入模組10，將燃 料供給的進給管3，被配置在進給管3之中途的低壓過瀘器 4，將被供給之燃料的一部份（混合蒸氣之剩餘燃料）送 回燃料槽1的回行管5，做爲控制全體的控制手段之引擎控 制單元（ECU) 40等。 注入模組10，係由柱塞泵20，和噴射噴嘴30被形成。 柱塞泵20，係如圖1所示，備有由電磁啓動力及回行 彈簧往復動的柱塞2 1，將柱塞2 1自由滑動地收容之缸2 2， 爲了使配置在缸2 2的外側之軛（未圖示）發生磁力線用的 激磁用之線圏23，只容許向被畫定在缸22的前端側之加壓 室P C內的流程之止回閥2 4，在柱塞2 1內所形成的柱塞通 路21a只容許從加壓室PC向回行管5之止回閥25，在加壓行 程的初始領域之終點封閉柱塞通路2 1 a的溢流閥26，加壓 室PC內之燃料被加壓成所定壓力以上時容許吐出的止回 閥2 7等。再者，線圏2 3非通電時，柱塞2 1係由回行彈簧（ -9 - (6) (6)200303958 未圖示）被加勢而定位在待命位置（圖1之以實線表示的 位置）。 噴射噴嘴3 0，係如圖1所示，備有被縮小爲所定口徑 的小孔之小孔噴嘴3 1，通過小孔噴嘴3 1的燃料成爲所定壓 力以上時將開閥之提動閥3 2，爲了將燃料霧化用的空氣供 給之協助空氣管3 3等。 在由上述構成而成的注入模組1 0，係如圖8所示，當 線圈2 3以所定以上的脈波塞度被通電而發生電磁驅動力時 # ，將開始燃料的加壓行程P，在其初始領域（柱塞2 1移 動至以二點叉線S表示之位置溢流閥2 6關閥爲止），被加 壓成所定壓力的混合蒸氣之燃料將經由止回閥2 5從柱塞通 路21a被排出回行管5。 柱塞2 1從初始領域移動至後期領域時，將更把加壓室 PC內的燃料加壓。然後，被加壓成所定壓力以上之燃料 ，將使止回閥2 7開閥同時使提動閥3 2開閥而移行至噴射行 程I，與協動空氣一起向吸氣通路2a成霧狀被噴射。 暴 一方面，對線圏23的通電被切斷時，將終了噴射行程 I，由回行彈簧之加勢力，柱塞2 1將一面被推回待命位置 而移行至吸引行程S。此時，止回閥24將開閥而燃料將從 進給管3向加壓室PC內被吸引，待命以備下一噴射。 v 做爲控制手段的引擎控制單元4 0，係備有進行各種演 算處理同時將發出控制信號之CPU等的控制部4 1，驅動注 入模組1 〇 (柱塞泵2 0 )的驅動電路4 2，檢出各種狀態量向 控制部4 1輸出之檢出電路43，被記憶包含引擎2的運轉資 -10 - (7) (7)200303958 訊（事先由實驗被求得之控制圖）的各種資訊之記憶部44 等。 檢出電路4 3 ’將由檢出由檢出引擎旋轉數（旋轉速度 )的曲軸角度察覺器2b，水溫察覺器2c，吸氣壓察覺器2d ，節流閥開度察覺器2e等所得的對應引擎2之運轉狀態的 各種狀態量，而送至控制部4 1。 控制部4 1，將根據從檢出電路43之檢出資訊，算出其 每瞬間的引擎2之運轉狀態（在高負載運轉狀態、中負載 運轉狀態、加速運轉狀態、低負載運轉狀態等的那一運轉 狀態），根據被記憶在記憶部44之控制圖決定最適當的點 火時期，混合率（燃料噴射量、吸入空氣量）等，需要燃 料的增量修正時，除了同步噴射將加上非同步噴射之指令 信號發出。 並且，控制部4 1，係除了進行各種演算同時發出各種 控制信號的電路之外，包含有判定同步噴射與非同步噴射 的相對性時機之做爲判定手段的判定電路，根據該判定電 路之判定資訊調整同步噴射及非同步噴射的噴射時機之做 爲調整手段的調整電路等。 調整電路，將對應同步噴射的各行程（加壓行程P、 噴射行程I、吸引行程S )和非同步噴射之各行程（加壓行 程P、噴射行程I、吸引行程S )的相對性時機，進行將同 步噴射之噴射時間和非同步噴射的噴射時間加算之加算處 理，或者，使非同步噴射的開始時期延遲至同步噴射之結 束後或使同步噴射的開始時期延遲至非同步噴射之結束後 -11 - (8) (8)200303958 的延遲處理等，而調整同步噴射與非同步噴射之噴射時機 〇 接著，將同步噴射和非同步噴射在各種時機的控制手 法，根據圖2乃至圖6說明。 圖2，係顯示控制部4 1 (判定電路）判定非同步噴射 的時機不會與同步噴射之時機重疊時的噴射曲線之時間圖 。在該噴射曲線’係如圖2所示，在同步噴射的從關閥（ 吸引行程S )結束後至下一同步噴射之開閥（加壓行程p ) 開始前爲止的期間，將被發出非同步噴射之指令信號。 因此，控制部4 1 (調整電路），將根據判定資訊，在 同步噴射和下一同步噴射之間，進行設定依照指令信號的 非同步噴射之噴射時機的控制。 由此’對應由同步噴射的基本噴射量及由同步噴射之 修正噴射量的燃料將被確實地噴射。 圖3，係顯示控制部4 1 (判定電路），判斷爲非同步 噴射的時機將與同步噴射之時機（加壓行程p或噴射行程工 )重疊時的噴射曲線之時間圖。在本噴射曲線，係如圖3 所示，在同步噴射的從開閥（加壓行程P )開始後至閉閥 開始則（噴射f了程I結束）之期間T 1，被發出非同步噴射 的指令信號。 因此’控制部4 1 ( gjf整電路），將根據判定畜訊，在 同步噴射的噴射時間之後把非同步噴射的噴射時間加上（ 加法處理）’將其噴射終了時期再設定，而進行調整兩者 的噴射時機之控制。 -12- (9) (9)200303958 由此，對應根據同步噴射的基本噴射量及非同步噴射 之修正噴射量所要求的燃料將被確實地噴射。 圖4，係顯示控制部4 1 (判定電路），判斷爲非同步 噴射的時機將與同步噴射之時機（吸引行程S )重疊時的 噴射曲線之時間圖。在該噴射曲線，如圖4所示，將在從 同步噴射的關閥（吸引行程S )開始後至關閥結束前（吸 引行程S結束）爲止之期間T2，被發出非同步噴射的指令 信號。 · 因此，控制部4 1 (調整電路），將根據判定資訊，到 同步噴射的吸引行程S (關閥結束）爲止，從被發出指令 信號使非同步噴射的開始時間（開始開閥）只延遲時間T3 ，把其噴射開始時期再設定，進行調整兩者的噴射時機之 控制。 據此，因在非同步噴射將被進行完全的加壓行程，對 應被要求的增量修正之燃料將被確實地噴射。 圖5，係顯示控制部4 1 (判定電路）判斷爲下一同步 # 噴射的時機會重疊在非同步噴射之時機（加壓行程P或噴 射行程I )時噴射曲線的時間圖。在該噴射曲線，將如圖5 所示地，在從非同步噴射的開閥（加壓行程P )開始後至 關閥開始前（噴射行程I終了）爲止之期間T 4，被發出下 一同步噴射的指令信號。 ~ 因此，控制部4 1 (調整電路），將根據判定資訊，在 非同步噴射的噴射時間之後加上（加法處理）同步噴射的 噴射時間，再設定其噴射終了時間進行調整兩者之噴射時 -13- (10) (10)200303958 機的控制。 由此，對應根據非同步噴射之修正噴射量及根據同步 噴射的基本噴射量被要求之燃料，將被確實地噴射。 圖6，係控制部4 1 (判定電路），判斷下一同步噴射 的時機將重疊在非同步噴射之時機（吸引行程S )時的噴 射曲線之時間圖。在該噴射曲線，係如圖6所示，將在從 非同步噴射的關閥（吸引行程S )開始後至關閥結束前（ 吸引行程S終了）爲止之期間T5，被發出下一同步噴射之 φ 指令信號。 因此，控制部4 1 (調整電路），將根據判定資訊，在 非同步噴射的吸引行程S結束（關閥結束）爲止，從被發 出指令信號使同步噴射之開始時間（開始開閥）延遲時間 T6，再設定其噴射開始時期，進行調整兩者的噴射時機之 控制。 由此，在下一同步噴射將被進行完全的加壓行程，對 應被要求之基本噴射量的燃料，將被確實地噴射。 β 在上述實施形態，雖然做爲注入模組，顯示柱塞泵20 和噴射噴嘴3 0被一體地形成者，可是並不限於此，柱塞泵 20和噴射噴嘴30成爲獨立者等，只要係適用柱塞泵者由其 他構成所成者也可以。 〔發明之效果〕 如上所述，根據本發明之燃料噴射控制裝置時，利用 藉由柱塞的往復動作而噴射燃料之注入模組，進行同步噴 -14- (11) (11)200303958 射及非同步噴射時，將先判定同步噴射與非同歩_ _ @ _ 對性時機，根據此判定結果而調整同步噴射和非胃# 之噴射時機，例如，藉由控制燃料噴射使之進行噴射時間 的加法處理或延遲處理，能夠使其噴射出對應內燃機的運 轉狀態之最適當量的燃料噴射。 【圖式簡單說明】 〔圖1〕 係顯示包含本發明之燃料噴射控制裝置的燃料噴射系 統之槪略的構成圖。 〔圖2〕 係顯示本發明之燃料噴射控制裝置的噴射曲線之時間 圖。 〔圖3〕 係顯示本發明之燃料噴射控制裝置的其他噴射曲線之 時間圖。 〔圖4〕 係顯示關於本發明之燃料噴射控制裝置的其他噴射曲 線之時間圖。 〔圖5〕 係顯示關於本發明之燃料噴射控制裝置的其他噴射曲 線之時間圖。 〔圖6〕 係顯示關於本發明之燃料噴射控制裝置的其他噴射曲 -15- (12) (12)200303958 線之時間圖。 〔圖7〕 係顯示燃料噴射量的槪念之說明圖。 〔圖8〕 係顯示使用柱塞泵的注入模組之動作特性的時間圖。 【符號說明】 1 燃料槽 # 2 引擎 2a 吸氣通路 2b 曲軸角度察覺器 2c 水溫察覺器 2d 吸氣壓察覺器 2e 節流閥開度察覺器 3 進給管 4 低壓過濾器 5 回行管 10 注入模組 20 柱塞泵 2 1 柱塞 23 線圏 24、 25、27 止回閥 26 溢流閥 3 0 噴射噴嘴 -16- (13) (13)200303958 40引擎控制單元（控制手段） 4 1 控制部（判定手段、調整手段） 42 驅動電路 4 3 檢出電路 44 記憶部CD 发明 Description of the invention [Technical field to which the invention belongs] The present invention relates to a fuel injection control device that injects fuel toward an intake passage of an internal combustion engine (hereinafter, referred to as an engine), and particularly relates to a driving source for supplying fuel. A fuel injection control device including an injection module (injection module) of Kuriura plunger that sucks and pressurizes by reciprocating movement is used. [Prior art] As a fuel injection system of an engine mounted on a vehicle, an electronically controlled fuel injection system is usually used. In this control system, various information such as the rotation speed of the engine, the amount of air taken in, the water temperature of the engine, the opening of the throttle valve, the suction pressure, and the concentration of 02 are detected by the detector, and based on the detected information, The engine control unit (ECU) calculates the operating state of the engine at each instant, and reads the most appropriate ignition timing, mixing rate (fuel injection amount, intake air amount), etc. from the control chart obtained in advance through experiments. According to the read control signal, the injector, the ignition wire, and the like are driven and controlled to control the fuel injection amount, injection timing, ignition timing, and the like. For example, as shown in FIG. 7, the basic fuel injection amount of the synchronous rotation injection (synchronous injection) of the engine rotation determined based on the information such as the intake air amount and the engine rotation speed (the number of rotations), and Information such as the valve opening degree, suction pressure, and 02 concentration is determined when the engine is operating under high load, acceleration, or warm-up conditions. The amount of modified fuel injection -5- (2) (2) 200303958 determines the actual fuel injection amount for actual injection. Then, when the timing of the synchronous injection and the timing of the non-synchronous injection overlap, the actual injection time addition processing is performed in the previous injector. In the injector, the internal fuel pressure is maintained constant by the fuel pressure regulator, and even if a valve opening command is issued during the valve closing operation, the correct injection can be performed. On the other hand, as a fuel injection system applied to an engine mounted in a locomotive or the like, for example, it is disclosed in Japanese Patent Application Laid-Open No. 200 1 -22 1 1 3 7 that it is known to guide a fuel tank to a feed pipe. The fuel is sucked and pressurized into the intake passage by an injection module (IM) having an electromagnetically driven plunger pump and an injection nozzle that are integral or independent. As the operating characteristics (IM behavior) of the injection module, as shown in FIG. 8, once a pulse-shaped driving signal is issued, it is based on the pressurizing stroke (valve opening stroke) of pressurizing the fuel by the plunger. P; injection stroke I of fuel that is pressurized to a predetermined level I; plunger is completed by three strokes of the suction stroke (closed stroke) S of the fuel while returning to the rest position by the thrust of a spring Fuel injection. # [Problems to be Solved by the Invention] However, in a fuel injection system using such an injection module, if such a conventional asynchronous injection is used, especially when the synchronous injection is in the suction stroke S (close valve start to close valve) At the end of the valve closing stroke), if the timing of non-synchronous injection overlaps, it will move to the injection stroke when the fuel suction is not finished, so the fuel injection amount cannot be controlled accurately. The present invention has been developed in view of the above-mentioned problems, and its purpose is to provide a fuel injection system for an injection module using a plunger pump as a driving source for supplying fuel. Provide a fuel injection control device capable of controlling the fuel injection amount with high accuracy in accordance with the operating state of the engine. [Summary of the Invention] [Methods for Solving the Problems] The fuel injection control device of the present invention is equipped with a fuel injection injection using a reciprocating action of a plunger consisting of a pressure stroke, an injection stroke, and a suction stroke and a suction stroke. A module; and a fuel injection control device that controls synchronous injection of fuel injection synchronized with the rotation of the internal combustion engine and asynchronous injection control that corrects the injection of fuel in accordance with the operating state of the internal combustion engine, characterized in that the control means includes : Judging means for judging the relative timing of synchronous injection and asynchronous injection; and adjusting means for adjusting the injection timing between synchronous injection and asynchronous injection according to the information of the judging method. According to this configuration, the determination means determines the timing relationship between the synchronous injection and the synchronous injection, that is, whether the asynchronous injection and the synchronous injection are overlapped, and if they are overlapped, the asynchronous injection and the synchronous injection are They overlap in the areas of the respective pressure stroke, injection stroke, and suction stroke. Then, based on this determination information, the adjustment means adjusts the timing of asynchronous injection and synchronous injection to the most appropriate timing. Thereby, it is possible to control the fuel injection amount so as to be optimal for the operating state of the internal combustion engine. In the above configuration, when the judging means determines that the non-synchronous (4) (4) 200303958 injection timing overlaps the pressurizing stroke or injection stroke of the synchronous injection, the adjusting means performs the injection after the synchronous injection time. Add the injection time of the asynchronous injection to the addition processing. When the judgment means determines that the timing of the asynchronous injection overlaps with the suction stroke of the synchronous injection, the adjustment means will delay the start time of the asynchronous injection to the suction stroke of the synchronous injection. The structure of the delay processing until the end. According to this configuration, the injection time of the non-synchronous injection is added to the injection time of the synchronous injection, so that the required fuel can be reliably injected (the basic fuel injection amount + the corrected fuel amount). In addition, since the asynchronous injection is started after the suction stroke of the synchronous injection is completed, a full pressurizing stroke is performed during the asynchronous injection period. As a result, the required incremental correction and the like can be performed with certainty. In the above configuration mode, when the determination means determines that the timing of the synchronous injection overlaps in the pressurization stroke or the injection stroke of the asynchronous injection, the adjustment means will add the synchronous injection after the injection time of the asynchronous injection. Addition processing of injection time, when the determination means determines that the timing of the synchronous injection overlaps in the suction stroke of the asynchronous injection, the adjustment means delays the start time of the synchronous injection until the suction stroke of the asynchronous injection ends How the process is structured. According to this configuration, since the injection time of the asynchronous injection is added to the injection time of the subsequent synchronous injection, the required fuel can be reliably injected (corrected fuel amount + basic injection fuel amount). In addition, since the synchronous injection is started after the suction stroke of the asynchronous injection is completed, a full pressurizing stroke is performed during the synchronous injection. As a result, the required fuel (basic fuel injection amount) can be reliably injected (-8) (5) (5) 200303958. [Embodiment] [Embodiment of the invention] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 is a diagram showing a schematic configuration of a fuel injection system provided with a fuel injection control device of the present invention, and Figs. 2 to 6 are timing charts showing various injection curves. This fuel injection system, as shown in FIG. 1, is provided with a fuel tank 1, which is arranged in an intake path 2 a of an engine 2 and injects fuel into a module 10, and a feed pipe 3 for supplying fuel is arranged in an inlet. The low-pressure relay 4 in the middle of the pipe 3 returns a part of the supplied fuel (the remaining fuel of the mixed vapor) to the return pipe 5 of the fuel tank 1 as an engine control unit for controlling the entire control means. (ECU) 40 and so on. The injection module 10 is formed by a plunger pump 20 and an injection nozzle 30. As shown in FIG. 1, the plunger pump 20 is provided with a plunger 21 that is reciprocated by an electromagnetic starting force and a return spring. The plunger 21 is slidably accommodated in the cylinder 2 2. The outer yoke (not shown) of 2 generates the magnetic field line 圏 23 for the magnetic field lines, and the check valve 2 4 is only allowed to flow into the pressure chamber PC which is drawn on the front end side of the cylinder 22, in the column The plunger passage 21a formed in the plug 2 1 allows only the check valve 25 from the pressurizing chamber PC to the return pipe 5 and closes the relief valve 26 of the plunger passage 2 1 a at the end of the initial area of the pressurization stroke. When the fuel in the pressurizing chamber PC is pressurized to a pressure higher than a predetermined pressure, the check valve 27 and the like allow discharge. In addition, when the wire coil 23 is not energized, the plunger 21 is positioned at the standby position by the return spring (-9-(6) (6) 200303958 not shown) (see the solid line in Figure 1). s position). The injection nozzle 30, as shown in FIG. 1, is provided with a small-hole nozzle 3 1 that is reduced to a small hole with a predetermined diameter. A poppet valve 3 that opens the valve when the fuel passing through the small-hole nozzle 3 1 becomes a predetermined pressure or more 2. Assist air pipe 3 3 etc. for supplying air for fuel atomization. In the injection module 10 configured as described above, as shown in FIG. 8, when the coil 23 is energized with a pulse wave degree of more than a predetermined value to generate an electromagnetic driving force, the pressurizing stroke P of the fuel is started. In its initial area (the plunger 21 moves to the position indicated by the two-point cross line S until the relief valve 26 closes the valve), the fuel of the mixed vapor pressurized to a predetermined pressure will pass through the check valve 2 5 from The plunger passage 21 a is discharged from the return pipe 5. When the plunger 21 is moved from the initial area to the late area, the fuel in the pressurizing chamber PC is further pressurized. Then, when the fuel is pressurized to a predetermined pressure or higher, the check valve 27 is opened and the poppet valve 32 is opened to move to the injection stroke I, and together with the assisted air, it is misted toward the intake path 2a. Being sprayed. On the other hand, when the power to the coil 23 is cut off, the injection stroke I will be terminated. The plunger 21 will be pushed back to the standby position by the force of the return spring and moved to the suction stroke S. At this time, the check valve 24 will be opened and the fuel will be sucked into the pressurizing chamber PC from the feed pipe 3 and stand by for the next injection. v The engine control unit 40, which is a control means, is provided with a control unit 41 that performs various calculation processes and a control signal such as a CPU, and a drive circuit 4 that drives the injection module 1 0 (plunger pump 2 0). 2. The detection circuit 43 that outputs various state quantities to the control unit 41 is stored, and contains the operating data of the engine 2 -10-(7) (7) 200303958 (the control chart obtained by experiments in advance). Memory section 44 for various information. The detection circuit 4 3 ′ detects the correspondence obtained by detecting the crank angle sensor 2b, the water temperature sensor 2c, the suction pressure sensor 2d, the throttle opening sensor 2e, etc., by detecting the engine rotation number (rotation speed). Various state quantities of the running state of the engine 2 are sent to the control unit 41. The control unit 41 calculates the operating state of the engine 2 (in a high-load operation state, a medium-load operation state, an accelerated operation state, a low-load operation state, etc.) every instant based on the detection information from the detection circuit 43. (Operating state), the most appropriate ignition timing, mixing rate (fuel injection quantity, intake air quantity), etc. are determined based on the control chart memorized in the memory section 44. When incremental correction of fuel is required, in addition to synchronous injection, non- The command signal for synchronous injection is issued. In addition, the control unit 41 is a judgment circuit which includes various circuits for performing various calculations and simultaneously sends various control signals, and includes a judgment circuit for judging the relative timing of the synchronous injection and the asynchronous injection as a judging means. Information adjusts the timing of synchronous injection and non-synchronous injection as timing adjustment circuits. The adjustment circuit adjusts the relative timing of each stroke corresponding to the synchronous injection (pressurization stroke P, injection stroke I, suction stroke S) and each stroke of the asynchronous injection (pressurization stroke P, injection stroke I, suction stroke S), Performing an addition process of adding the injection time of the synchronous injection and the injection time of the asynchronous injection, or delaying the start time of the asynchronous injection until the end of the synchronous injection or delaying the start time of the synchronous injection until the end of the asynchronous injection -11-(8) (8) 200303958, etc., to adjust the injection timing of synchronous injection and asynchronous injection. Next, control methods of synchronous injection and asynchronous injection at various timings will be explained with reference to FIGS. 2 to 6 . FIG. 2 is a timing chart showing the injection curve when the control section 41 (determination circuit) determines that the timing of the asynchronous injection does not overlap with the timing of the synchronous injection. As shown in FIG. 2, this injection curve is issued after the closing of the synchronous injection valve (suction stroke S) and before the opening of the next synchronous injection valve (pressurization stroke p). Command signal for synchronous injection. Therefore, the control unit 41 (adjustment circuit) controls the setting of the injection timing of the asynchronous injection according to the command signal between the synchronous injection and the next synchronous injection based on the determination information. Accordingly, the fuel corresponding to the basic injection amount by the synchronous injection and the corrected injection amount by the synchronous injection is surely injected. Fig. 3 is a timing chart showing the injection curve when the timing of the asynchronous injection is determined by the control unit 41 (determination circuit) to overlap with the timing (pressurization stroke p or injection stroke operation) of the synchronous injection. In this injection curve, as shown in FIG. 3, asynchronous injection is issued during the period T 1 from the start of the valve opening (pressurization stroke P) to the start of the valve closing (injection f ends the stroke I) of the synchronous injection. Command signal. Therefore, the 'control unit 41 (the entire circuit of gjf) will adjust the injection time of the non-synchronized injection (addition process) after the injection time of the synchronous injection according to the determination of the animal news, and then set the injection end time to adjust it. Control of injection timing of both. -12- (9) (9) 200303958 As a result, the fuel required for the basic injection amount of synchronous injection and the corrected injection amount of asynchronous injection is reliably injected. Fig. 4 is a timing chart showing the injection curve when the timing of the asynchronous injection is overlapped with the timing (suction stroke S) of the synchronous injection by the control unit 41 (determination circuit). In this injection curve, as shown in FIG. 4, a command signal for asynchronous injection is issued during a period T2 from the start of the valve closing (suction stroke S) of the synchronous injection to the end of the valve closing (the suction stroke S ends). . · Therefore, the control unit 41 (adjustment circuit) will delay the start time of non-synchronous injection (valve opening) from the command signal until the suction stroke S (valve closing) of the synchronous injection is determined based on the determination information. At time T3, the injection start time is reset to control the timing of injection of both. Accordingly, since the full pressurization stroke is performed during the asynchronous injection, the fuel corresponding to the required incremental correction is surely injected. Fig. 5 is a timing chart showing the injection curve when the control unit 41 (determination circuit) judges that the timing of the next synchronous # injection overlaps with the timing of the asynchronous injection (pressurization stroke P or injection stroke I). In this injection curve, as shown in FIG. 5, the next period T 4 from the start of the valve opening (pressurization stroke P) of the asynchronous injection to the start of the valve closing (the end of the injection stroke I) will be issued. Command signal for synchronous injection. ~ Therefore, the control unit 41 (adjustment circuit) will add the injection time of the synchronous injection (addition processing) to the injection time of the asynchronous injection based on the determination information, and then set the injection end time to adjust the injection time of both. -13- (10) (10) 200303958 Machine control. Therefore, the fuel corresponding to the corrected injection amount based on the asynchronous injection and the basic injection amount based on the synchronous injection is surely injected. Fig. 6 is a timing chart of the injection curve at the time when the timing of the next synchronous injection (suction stroke S) is superimposed by the control unit 41 (determination circuit). In this injection curve, as shown in FIG. 6, the next synchronous injection is issued during a period T5 from the start of the non-synchronous injection valve closing (suction stroke S) to the end of the valve closing (the suction stroke S ends). Φ command signal. Therefore, the control unit 41 (adjustment circuit) will delay the start time (start valve opening) of the synchronous injection from the command signal until the suction stroke S of the asynchronous injection ends (valve closing) based on the determination information. At T6, the injection start time is set again to control the timing of injection of both. Therefore, in the next synchronous injection, a full pressurizing stroke is performed, and fuel corresponding to the required basic injection amount is surely injected. β In the above embodiment, although the plunger pump 20 and the injection nozzle 30 are integrally formed as the injection module, it is not limited to this. The plunger pump 20 and the injection nozzle 30 are independent, as long as the system The plunger pump can be formed by other structures. [Effects of the Invention] As described above, when the fuel injection control device according to the present invention uses the injection module that injects fuel by the reciprocating action of the plunger, synchronous injection is performed. 14- (11) (11) 200303958 For non-synchronous injection, the timing of synchronous injection and non-synchronous _ _ @ _ will be determined first, and the timing of synchronous injection and non-stomach injection will be adjusted based on the result of this determination. For example, by controlling the fuel injection to make injection time The addition processing or the delay processing can be made to inject the most appropriate amount of fuel injection corresponding to the operating state of the internal combustion engine. [Brief description of the drawings] [Fig. 1] A schematic configuration diagram showing a fuel injection system including a fuel injection control device of the present invention. [Fig. 2] A time chart showing an injection curve of the fuel injection control device of the present invention. [Fig. 3] A timing chart showing other injection curves of the fuel injection control device of the present invention. [Fig. 4] A timing chart showing other injection curves of the fuel injection control device of the present invention. [Fig. 5] A timing chart showing other injection curves of the fuel injection control device of the present invention. [Fig. 6] It is a timing chart showing other injection curves of the fuel injection control device of the present invention. (15) (12) (12) 200303958 line. [Fig. 7] An explanatory diagram showing the concept of fuel injection amount. [Fig. 8] A timing chart showing the operating characteristics of an injection module using a plunger pump. [Symbol description] 1 Fuel tank # 2 Engine 2a Suction path 2b Crankshaft angle sensor 2c Water temperature sensor 2d Suction pressure sensor 2e Throttle valve opening sensor 3 Feed pipe 4 Low pressure filter 5 Return pipe 10 Injection module 20 plunger pump 2 1 plunger 23 line 24, 25, 27 check valve 26 relief valve 3 0 injection nozzle -16- (13) (13) 200303958 40 engine control unit (control means) 4 1 Control section (determination means, adjustment means) 42 Drive circuit 4 3 Detection circuit 44 Memory section
-17--17-