1261087 (1) 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，稱爲弓丨擎）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 糸δ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丨吴組（噴射彳吴組）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 w 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 €1 讀出的控制信號將注入器、點火線圈等驅動控制，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- (4) 1261087 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- (8) 1261087 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非同步噴射 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I )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 開始前（噴射行程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 (調整電路），將根據判定資訊，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) 1261087 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» (11) 1261087 射及非同步噴射時，將先判定同步噴射與非同步噴射的丰目 對性時機，根據此判定結果而調整同步噴射和非同步噴秦寸 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 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) 1261087 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 2 a 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 2 1a 柱塞通路 22 缸 23 線圈 24、 2 5、2 7 止回閥 -16-1261087 (1) Technical Field of the Invention 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 a bowing engine), and particularly relates to a supply. The driving source of the δ fuel is a fuel injection control device that is injected into the 丨 组 group (injection 彳 组 group) including a plunger pump that is sucked and pressurized by reciprocating movement. [Prior Art] As a fuel injection system that is loaded on an engine of a vehicle, an electronically controlled fuel injection system is usually used. In the control system, various information such as the rotational speed of the engine, the amount of intake air, the temperature of the engine, the opening of the throttle valve, the suction pressure, the force, and the concentration of 〇2 are detected by the detector, according to the detected funds. w The engine control unit (ECU) calculates the operating state of the engine at each instant, and selects the optimal ignition timing, mixing ratio (fuel injection amount, intake air amount), etc. from the control map obtained in advance from the experiment. Reading, the injector, the ignition coil, and the like are driven and controlled based on the control signal read by €1 to control the fuel injection amount, the injection timing, the ignition timing, and the like. For example, as shown in FIG. 7, the basic fuel injection amount of the engine rotation synchronous injection (synchronous injection) determined based on the information on the rotational speed (number of rotations) of the engine and the information based on the amount of intake air or the like, and the engine water temperature, section The information such as the valve opening degree, the intake pressure, and the 〇2 concentration is judged to be in the high-load state, the acceleration state, the warm-up state, and the like, and the engine will be rotated without changing the engine. Corrected fuel injection-5-(4) 1261087 When the timing of the injection overlaps the pressurization stroke or the injection stroke of the synchronous injection, the adjustment means will add the injection time of the asynchronous injection after the injection time of the synchronous injection. In the processing, when the determination means determines that the timing of the asynchronous injection overlaps with the suction stroke of the synchronous injection, the adjustment means performs a delay processing for delaying the start timing of the asynchronous injection to the end of the suction stroke of the synchronous injection. According to this configuration, since the injection timing of the asynchronous injection is added to the injection timing of the synchronous injection, the required fuel (basic fuel injection amount + corrected fuel amount) can be surely injected. Further, since the asynchronous injection is started after the end of the suction stroke of the synchronous injection, a full pressurizing stroke is performed during the non-synchronous injection period. Thereby, the required incremental correction or the like can be surely performed. In the above configuration, 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 performs the synchronous injection after the injection timing of the asynchronous injection. 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 of the synchronous injection to the end of the suction stroke of the asynchronous injection. The way in which the treatment is constructed. According to this configuration, since the injection timing of the subsequent synchronous injection is added to the injection timing of the asynchronous injection, the required fuel (corrected fuel amount + basic injected fuel amount) can be reliably injected. And, the synchronous injection is started after the end of the suction stroke of the asynchronous injection, and the full pressure stroke is performed in the synchronous injection. Thereby, it is possible to adjust the injection timing of the synchronous injection and the asynchronous injection with the delay processing of -8-(8) 1261087, etc., and then the control method of the synchronous injection and the asynchronous injection at various timings, according to FIG. 2 It is illustrated in Figure 6. Fig. 2 is a timing chart showing an injection curve when the control unit 4 1 (determination circuit) determines that the timing of the asynchronous injection does not overlap with the timing of the synchronous injection. In the injection curve, as shown in FIG. 2, during the period from the end of the closing valve (the suction stroke S) of the synchronous injection to the start of the opening of the next synchronous injection (the pressurizing stroke P), a non-period will be issued. Synchronous injection command signal. Therefore, the control unit 4 1 (adjustment circuit) controls the injection timing for setting the asynchronous injection in accordance with the command signal between the synchronous injection and the next synchronous injection based on the determination information. Thereby, the fuel corresponding to the basic injection amount by the synchronous injection and the corrected injection amount by the asynchronous injection will be reliably injected. Fig. 3 is a timing chart showing an injection curve when the control unit 4 1 (determination circuit) determines that the timing of the asynchronous injection is overlapped with the timing of the synchronous injection (the pressurizing stroke P or the injection stroke I). In the present injection curve, as shown in FIG. 3, a command for asynchronous injection is issued during the period T1 from the start of the valve opening (pressure stroke P) to the start of the valve closing (the end of the injection stroke I) of the synchronous injection. signal. Therefore, the control unit 4 1 (adjustment circuit) adds (in addition processing) the injection time of the asynchronous injection after the injection time of the synchronous injection based on the determination information, and resets the injection end period to adjust both. The timing of the injection timing. -12- (9) 1261087 Thus, the fuel required for the basic injection amount according to the synchronous injection and the corrected injection amount of the asynchronous injection will be reliably injected. Fig. 4 is a timing chart showing an injection curve when the control unit 4 1 (determination circuit) determines that the timing of the asynchronous injection is overlapped with the timing of the synchronous injection (suction stroke S). In the injection curve, as shown in FIG. 4, a command signal for asynchronous injection is issued during a period T2 from the start of the closing valve (suction stroke S) of the synchronous injection to the end of the closing of the valve (the suction stroke S ends). . Therefore, the control unit 4 1 (adjustment circuit) delays the start time (start of valve opening) of the asynchronous injection from the command signal issued until the suction stroke S of the synchronous injection (the valve is closed) based on the determination information. T3 'Resets the injection start timing and adjusts the injection timing of both. Accordingly, since the non-synchronous injection will be subjected to a full pressurization stroke, the fuel corresponding to the required incremental correction will be reliably ejected. Fig. 5 is a timing chart showing an injection curve when the control unit 4 1 (determination circuit) determines that the timing of the next synchronous injection overlaps with the timing of the asynchronous injection (pressurization stroke P or injection stroke I). In the injection curve, as shown in Fig. 5, the period T 4 from the start of the valve opening (pressure stroke P) of the asynchronous injection to the start of the valve closing (the end of the injection stroke I) is issued next. Synchronous injection command signal. Therefore, the control unit 4 1 (adjustment circuit) adds (in addition processing) the injection time of the synchronous injection to the injection time of the asynchronous injection based on the determination information, and sets the injection end time to adjust the injection of both - 13» (11) 1261087 When shooting and non-synchronous injection, the timing of synchronous injection and non-synchronous injection will be determined first, and the timing of synchronous injection and non-synchronous injection will be adjusted according to the result of the determination, for example, By adding or delaying the injection timing by controlling the fuel injection, it is possible to inject the most appropriate amount of fuel injection corresponding to the turning state of the internal combustion engine. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view showing a fuel injection system including a fuel injection control device of the present invention. Fig. 2 is a timing chart showing an injection curve of the fuel injection control device of the present invention. Fig. 3 is a timing chart showing other injection curves of the fuel injection control device of the present invention. Fig. 4 is a timing chart showing other injection curves of the fuel injection control device of the present invention. Fig. 5 is a timing chart showing other injection curves of the fuel injection control device of the present invention. Fig. 6 is a timing chart showing other injection -15-(12) 1261087 lines of the fuel injection control device of the present invention. Fig. 7 is an explanatory diagram showing the mourning of the fuel injection amount. [Fig. 8] A timing chart showing the operational characteristics of the injection module using the plunger pump. [Description of symbols] 1 Fuel tank 2 Engine 2 a Suction path 2b Crank angle detector 2c Water temperature detector 2d Suction pressure detector 2e Throttle valve opening detector 3 Feed tube 4 Low pressure filter 5 Return tube 10 Injection module 20 plunger pump 2 1 plunger 2 1a plunger passage 22 cylinder 23 coil 24, 2 5, 2 7 check valve-16-