201043775 六、發明說明 【發明所屬之技術領域】 本發明係關於引擎的技術，特別是有關於具備引擎在 冷機啓動時，執行引擎轉數控制之控制裝置之引擎的技 術。 【先前技術】 —直以來’在引擎冷機啓動時，因爲引擎內之燃燒室 的溫度較低而無法促進燃料的蒸發。因此，爲了改善引擎 冷機一啓動後所產生的黑煙，較爲大眾所知的技術有：縮 小燃料噴射閥的噴口面積'或者是加大噴口的角度等。 (例如：參照專利文獻1) [先前技術文獻] [專利文獻] [專利文獻1]特開2003_42037號公報 【發明內容】 [發明所欲解決之課題] 但是’如果縮小燃料噴射閥的噴口面積，或者是加大 噴口的角度，會使燃費惡化，因爲高引擎負荷時的燃料噴 射壓力上昇，也會增加Nox的排出量，所以會降低引擎 性能。再者’如果爲了輔助引擎啓動而裝設了加熱器等附 加裝置的話，則又會增加成本。 因此，本發明鑑於此課題，即提供一種在引擎冷機啓 -5- 201043775 動時，可提昇燃料的燃燒效率’減少黑煙產生量的引擎。 [用以解決課題之手段] 本發明所欲解決之課題如上所述，接下來就針對用以 解決該課題的手段來加以說明。 意即，本發明的引擎係具備：執行引擎之冷卻的冷卻 水的水溫檢測手段、引擎轉數檢測手段、用來切換離合器 機構的切換手段、決定設定引擎轉數的引擎轉數設定手 段、以及可以自動控制目標引擎轉數的控制裝置；上述控 制裝置在引擎啓動時之冷卻水的水溫爲預定之溫度以下 時，執行轉數補正控制，該轉數補正控制係將目標引擎轉 數設定爲：高於由引擎轉數決定手段所設定的設定引擎轉 數。 在本發明中，上述控制裝置在引擎啓動時的冷卻水溫 度到達預定之溫度時，解除轉數補正控制。 在本發明中，上述控制裝置在執行轉數補正控制時， 係根據轉數補正控制開始時的引擎轉數、以及被記憶在設 於上述控制裝置之記憶裝置的轉數補正圖來執行轉數補正 控制。 在本發明中，上述控制裝置在轉數補正控制爲有效期 間’在藉由上述切換手段將離合器機構切換至「開」時， 於將離合器機構切換至「開」後，即解除轉數補正控制， 並根據將離合器機構切換至「開」之時機點的引擎轉數、 以及被記憶在設於上述控制裝置之記憶裝置的轉數補正圖 -6- 201043775 來執行轉數補正解除控制。 在本發明中，上述控制裝置在執行轉數補正解除控制 時，之後一旦引擎停止，若沒有再度啓動就不會執行轉數 補正控制。 在本發明中，在引擎啓動前，若判斷水溫檢測手段爲 故障時，就不會執行轉數補正控制。 [發明效果] 本發明可達到如下所述的效果。 在本發明中，可藉由提高引擎轉數來提昇燃料的燃燒 效率，降低冷機一啓動時的黑煙排出量。並且，可促進引 擎的溫度上昇，使黑煙提早消失。 在本發明中，提高引擎轉數的結果，引擎溫度上昇到 一定溫度時，便能以經作業者設定的設定引擎轉數來運 轉。 在本發明中，藉由控制冷機啓動時之引擎轉數的變化 量，即可使引擎轉數順暢移行。 在本發明中，將離合器機構切換至「開」之後，藉由 控制引擎轉數的變化量，即可使引擎轉數緩慢減少，朝設 定引擎轉數移行。因此，當引擎爲船舶用引擎，爲驅動推 進單元之引擎時，可防止船舶操縱性的惡化。 在本發明中，在已進入操船動作狀態下，可防止不斷 地執行轉數補正控制。 在本發明中，可防止除了在冷機啓動時以外，錯誤執 -7- 201043775 行轉數補正控制。 【實施方式】 首先，利用第1圖來說明本發明之實施形態的引擎 100。引擎100係被搭載在船舶，做爲船舶用引擎’而驅 動推進單元110的引擎。又，本引擎並非只限定於當做船 舶用引擎，爲驅動推進單元110的引擎，也可以爲使用於 其他用途的引擎。此外，引擎100係具備：引擎本體 1 0、以及執行燃料噴射時期之進角控制的控制裝置20。 引擎本體10係爲柴油引擎。引擎本體10的輸出軸 11係與推進單元110連接。又，在引擎本體10的輸出軸 11係設有飛輪12。推進單元110係爲藉由輸出軸11的驅 動，透過無圖示的傳達機構來驅動螺旋槳111的單元。此 外，還設有用來執行出力軸與推進單元之間的接連、切 斷；以及正轉、反轉的切換的離合器機構23。該離合器 機構23係由油壓離合器等所構成，與控制裝置20連接、 離合。 引擎本體10係具備：做爲燃料噴射裝置的燃料噴射 泵21 ;以及噴射器22、22、22、22。燃料係被燃料噴射 泵21所壓送’利用噴射器22、22、22、22噴射至各個汽 缸內。 控制裝置20係爲在引擎低速區域須進行加速時，執 行燃料噴射時期之進角控制的裝置。控制裝置2 0係由： 引擎控制單兀（Engine Control Unit(以下稱爲ECU)40、加 -8 - 201043775 速器操作檢測手段41、做爲切換手段之離合器操作檢測 手段42、引擎轉數感測器44、齒條制動器（rack actuator)46、做爲選擇手段的接點輸入裝置47、以及水溫 感測器48所連接構成。 ECU40係具備：運算裝置50、以及記憶裝置5 1。 加速器操作檢測手段4 1以及離合器操作檢測手段 42，係設置在船舶的操舵席。此外，加速器操作檢測手段 π 41係設置在設定引擎轉數之加速器桿的轉動基部，對 〇 ECU40而言，具有輸入設定弓|擎轉數Nset的功能。又， 離合器操作檢測手段42係被設置在執行離合器機構23之 連接、切斷；以及正轉、反轉之切換操作的離合器桿的轉 動基部，將轉動操作的檢測訊號輸入至ECU40，以切換離 合器機構23。 引擎轉數感測器44係設於引擎100的輸出軸1 1附 近。又，引擎轉數感測器44係做爲實際引擎轉數檢測手 Q 段，具有檢測出實際引擎轉數Ne，並送訊至ECU40的功 m ° 齒條致動器46係爲根據目標噴射量來調整燃料噴射 量的裝置。 接點輸入裝置47係做爲選擇手段’針對引擎100的 各項功能，具有執行選擇或設定的功能° 水溫感測器48係具有檢測出用於引擎1 00之冷卻的 冷卻水的水溫T，並送訊至ECU的功能。上述水溫感測 器4 8係被設置在例如爲無圖示的冷卻水通路’檢測出因 -9 - 201043775 爲外氣或引擎之運轉狀態而變動的冷卻水的水溫τ ° 接下來，針對引擎冷機啓動時的引擎轉數控制來加以 說明。 控制裝置20在引擎啓動時，當冷卻水的水溫T在預 定之溫度以下時（冷機啓動時），執行轉數補正控制’該 轉數補正控制係將最終目標引擎轉數Nsetf設定爲：高於 由加速器操作檢測手段41所輸入之設定引擎轉數Nset的 補正目標引擎轉數Nset’。 在上述轉數補正控制中，如第2圖所示’於引擎啓動 開始之時機點to以後，在辨識引擎啓動之時機點ti’當 由上述水溫感測器48所檢測出之冷卻水的水溫T在下限 水溫T1以下時，上述控制裝置20的ECU40會使最終目 標引擎轉數Nsetf往高於設定引擎轉數Nset的補正目標 引擎轉數Nset’上昇。此外，如第3圖所示，當辨識出由 上述水溫感測器48所檢測出之引擎啓動的時機點tl的冷 卻水溫的水溫T高於下限水溫Τ1時，上述控制裝置2 0 的ECTU40不會執行轉數補正控制。 藉由如此構成，利用在冷機啓動時提高引擎轉數’可 以提昇噴射之燃料的燃燒效率，減少冷機一啓動時的黑煙 排出量。此外，還可促進引擎1 〇〇的溫度上昇，使黑煙提 早消失。 此外，在上述轉數補正控制中，藉由操作上述離合器 操作檢測手段42，在連接離合器機構23，切換至「開」 的情況下，可使最終目標引擎轉數Nsetf往補正目標引擎 -10- 201043775 轉數Nset’上昇，所以可降低切換時之引擎轉數的低下 量，謀求船舶操縱性的提昇。 又，上述轉數補正控制開始後，當冷卻水的水溫T上 昇時，上述控制裝置20的ECU40會執行轉數補正解除控 制，該轉數補正解除控制係將最終目標引擎轉數Ns etf設 定爲：與由加速器操作檢測手段4 1所輸入之設定引擎轉 數Nset相同的値。在上述轉數補正控制中，如第2圖所 Λ 示，當由上述水溫感測器48所檢測出的冷卻水的水溫Τ 〇 上昇到解除水溫Τ2以上時，上述控制裝置20的ECU40 會從該時機點t2開始，將最終目標引擎轉數Nsetf設定 爲：與由加速器操作檢測手段41所輸入之設定引擎轉數 Nset相同的値。 再者，在執行上述轉數補正控制當中，藉由操作上述 離合器操作檢測手段42，連接離合器機構23，切換至 「開」的情況下，上述控制裝置20的ECU40會執行轉數 Q 補正解除控制，該轉數補正解除控制係將最終目標引擎轉 數Nsetf設定爲：與由加速器操作檢測手段41所輸入之 設定引擎轉數Nset相同的値。在上述轉數補正解除控制 中，如第4圖所示，連接離合器機構23，切換至「開」 時，從該時機點t3開始，最終目標引擎轉數Nsetf不會 爲：高於由操縱者所輸入之設定引擎轉數Nset以上的引 擎轉數。如此一來，就可用操縱者預設的引擎轉數來操縱 船舶。 又，連接離合器機構23，切換至「開」，執行上述 -11 - 201043775 轉數補正解除控制時，之後一旦停止引擎，如果沒有再予 以啓動’上述控制裝置20的ECU40就不會執行轉數補正 控制。 例如如第4圖所示，一旦連接離合器機構23，切換 至「開」’執行上述轉數補正解除控制後，切斷離合器機 構2 3，切換至「關」時，即使該時機點t4的冷卻水的水 溫T爲下限水溫T1以下，上述控制裝置20的ECU40也 不會執行上述轉數補正控制。 之後，一旦引擎100停止，予以再啓動時，只要冷卻 水的水溫T在下限水溫T1以下，上述控制裝置20的 ECU40就會執行轉數補正控制。 如此一來，就可用操縱者預設的引擎轉數來操縱船 舶。 再者，當水溫感測器48故障時，如第5圖所示，上 述控制裝置20的ECU40不會執行使最終目標引擎轉數 Ns etf上昇的控制。藉由如此的構成，就可防止除了在冷 機啓動時以外，上述控制裝置20的ECU40錯誤地執行轉 數補正控制。 如上所述，引擎1 〇〇係具備：執行引擎1 00之冷卻的 冷卻水的水溫感測器48、引擎轉數感測器44、用來切換 離合器機構23的離合器操作檢測手段42、決定設定引擎 轉數Nset的加速器操作檢測手段4 1、以及可自動控制最 終目標引擎轉數Ns etf的控制裝置20 ;當引擎啓動時之冷 卻水的水溫T爲預定之溫度T1以下時，上述控制裝置2 0 -12- 201043775 會執行轉數補正控制’該轉數補正控制係將最終目標引擎 轉數Nsetf設定成：高於由加速器檢測手段41所設定之 設定引擎轉數Ns et的補正目標引擎轉數Ns et’。 藉由如此構成，利用提高引擎轉數即可提昇燃料的燃 燒效率，減少冷機一啓動時的黑煙排出量。此外，還可促 進引擎100的溫度上昇，提早使黑煙消失。 當引擎啓動時之冷卻水的水溫T到達預定的溫度T2 時，上述控制裝置20即解除轉數補正控制。 藉由如此構成，提高引擎轉數的結果，在引擎溫度穩 定上昇的情況下，可用作業者設定的設定引擎轉數Nset 來運轉。 上述控制裝置20在執行轉數補正控制時，係根據轉 數補正控制開始時的引擎轉數、以及被記憶在設於上述控 制裝置20之記憶裝置51的轉數補正圖f(N)，來執行轉數 補正控制。 藉由如此構成，利用控制冷機啓動時之引擎轉數的變 化量，即可使引擎轉數順利移行。 此外，上述控制裝置2 0在轉數補正控制爲有效的期 間，利用上述離合器操作檢測手段42，將離合器機構23 切換到「開」的情況下，在將離合器機構23切換至 「開」以後，解除轉數補正控制，根據把離合器機構23 切換至「開」之時機點的引擎轉數、以及被記憶在設於上 述控制裝置20之記憶裝置51的轉數補正圖f’（N)來執行 轉數補正解除控制。 -13- 201043775 藉由如此的構成，在把離合器機構23切換至「開」 以後，可利用控制引擎轉數的變化量，使引擎轉數漸漸減 少，朝設定引擎轉數Nset移行。因此，當引擎100 ’例 如做爲船舶引擎，爲驅動推進單元110的引擎時’即可防 止船舶操縱性的惡化。 再者，上述控制裝置20在執行轉數補正解除控制 時，引擎1 00 —旦停止，若沒有再度啓動就不會執行轉數 補正控制。 藉由如此構成，可防止在進入操船的狀態下’不斷地 執行轉數補正控制。 又，若在引擎啓動前，判斷水溫感測器48爲故障 時，就不執行轉數補正控制。 藉由如此構成，即可防止除了在冷機啓動時以外’錯 誤地執行轉數補正控制。 [產業上之利用可能性] 本發明係可用於引擎，特別是具備在引擎冷機啓動 時，可執行引擎轉數控制之控制裝置的引擎。 【圖式簡單說明】 第1圖係顯示有關本發明之一實施例之引擎全體構成 的槪略前視圖。 第2圖係顯示引擎轉數以及冷卻水溫度與時間之關係 的座標圖。 -14- 201043775 第3圖係顯示引擎轉數以及冷卻水溫度與時間之關係 的座標圖。 第4圖係顯示引擎轉數以及冷卻水溫度與時間之關係 的座標圖。 第5圖係顯示引擎轉數以及冷卻水溫度與時間之關係 的座標圖。 0 【主要元件符號說明】 10 :引擎本體 20:控制裝置 23:離合器機構BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the technology of an engine, and more particularly to a technology having an engine that controls a device for controlling the number of revolutions of an engine when the engine is started up. [Prior Art] - At the time of engine cold start, the evaporation of fuel cannot be promoted because the temperature of the combustion chamber in the engine is low. Therefore, in order to improve the black smoke generated after the engine is started, the well-known techniques include: reducing the orifice area of the fuel injection valve or increasing the angle of the nozzle. (For example, refer to Patent Document 1) [PRIOR ART DOCUMENT] [Patent Document 1] JP-A-2003-42037 SUMMARY OF INVENTION [Problems to be Solved by the Invention] However, if the orifice area of the fuel injection valve is reduced, Or, increasing the angle of the spout will deteriorate the fuel cost, because the fuel injection pressure at the time of high engine load increases, and the discharge amount of Nox is also increased, so that the engine performance is lowered. Furthermore, if an additional device such as a heater is installed to assist the engine start, the cost will increase. Accordingly, the present invention has been made in view of the object of the present invention to provide an engine that can improve the combustion efficiency of fuel and reduce the amount of black smoke generated when the engine is cold-started. [Means for Solving the Problems] The problems to be solved by the present invention are as described above, and the means for solving the problems will be described next. In other words, the engine of the present invention includes: a water temperature detecting means for executing cooling of the engine, a engine speed detecting means, a switching means for switching the clutch mechanism, and an engine number setting means for determining the number of engine revolutions. And a control device that can automatically control the number of revolutions of the target engine; the control device performs a revolution correction control when the water temperature of the cooling water at the time of starting the engine is below a predetermined temperature, and the rotation correction control system sets the target engine revolution number It is higher than the set engine revolution number set by the engine revolution number determining means. In the present invention, the control device releases the revolution correction control when the temperature of the cooling water at the time of starting the engine reaches a predetermined temperature. In the present invention, when the number-of-rotation correction control is executed, the control device executes the number of revolutions based on the number of engine revolutions at the start of the number-of-rotation correction control and the number of revolutions corrected in the memory device provided in the control device. Correction control. In the present invention, when the number of revolutions correction control is enabled, when the clutch mechanism is switched to "on" by the switching means, when the clutch mechanism is switched to "on", the number of revolutions is corrected. Then, the number of revolutions is released based on the number of engine revolutions at which the clutch mechanism is switched to the "on" timing, and the number of revolutions corrected in the memory device provided in the control device -6 - 201043775. In the present invention, when the above-described control device executes the number-of-rotation correction release control, once the engine is stopped, the revolution correction control is not executed unless it is restarted. In the present invention, if it is judged that the water temperature detecting means is a failure before the engine is started, the revolution correction control is not executed. [Effect of the Invention] The present invention can attain the effects as described below. In the present invention, the combustion efficiency of the fuel can be improved by increasing the number of engine revolutions, and the amount of black smoke discharged when the refrigerator is started can be reduced. Moreover, it can promote the temperature rise of the engine and make the black smoke disappear early. In the present invention, as a result of increasing the number of engine revolutions, when the engine temperature rises to a certain temperature, it can be operated by the set engine revolution number set by the operator. In the present invention, the engine revolution can be smoothly moved by controlling the amount of change in the number of engine revolutions at the time of the cold start. In the present invention, after the clutch mechanism is switched to "ON", by controlling the amount of change in the number of revolutions of the engine, the number of revolutions of the engine can be slowly reduced, and the number of revolutions of the engine can be shifted. Therefore, when the engine is an engine for a ship and the engine of the propulsion unit is driven, the deterioration of the maneuverability of the ship can be prevented. In the present invention, it is possible to prevent the number of revolution correction control from being continuously performed while having entered the ship operation state. In the present invention, it is possible to prevent the error control -7-201043775 line number correction control except when the cold machine is started. [Embodiment] First, an engine 100 according to an embodiment of the present invention will be described using Fig. 1 . The engine 100 is an engine that is mounted on a ship and drives the propulsion unit 110 as a ship engine. Further, the present engine is not limited to being used as a ship engine, but is an engine for driving the propulsion unit 110, and may be an engine used for other purposes. Further, the engine 100 includes an engine body 10 and a control device 20 that performs the advancement control of the fuel injection timing. The engine body 10 is a diesel engine. The output shaft 11 of the engine body 10 is coupled to the propulsion unit 110. Further, a flywheel 12 is provided on the output shaft 11 of the engine body 10. The propulsion unit 110 is a unit that drives the propeller 111 through a transmission mechanism (not shown) by the drive of the output shaft 11. Further, a clutch mechanism 23 for performing switching between the output shaft and the propulsion unit, cutting, and switching between forward rotation and reverse rotation is provided. The clutch mechanism 23 is constituted by a hydraulic clutch or the like, and is connected and disconnected from the control device 20. The engine body 10 includes a fuel injection pump 21 as a fuel injection device, and injectors 22, 22, 22, and 22. The fuel system is pumped by the fuel injection pump 21 to be injected into the respective cylinders by the injectors 22, 22, 22, and 22. The control device 20 is a device that performs the advancement control of the fuel injection period when acceleration is required in the engine low speed region. The control device 20 is composed of: an engine control unit (hereinafter referred to as ECU) 40, an -8 - 201043775 speed operation detecting means 41, a clutch operation detecting means 42 as a switching means, and a sense of engine revolution The detector 44, a rack actuator 46, a contact input device 47 as a selection means, and a water temperature sensor 48 are connected. The ECU 40 includes an arithmetic unit 50 and a memory unit 5 1. The operation detecting means 4 1 and the clutch operation detecting means 42 are provided in the steering seat of the ship. Further, the accelerator operation detecting means π 41 is provided at the rotation base of the accelerator lever for setting the number of engine revolutions, and has an input to the ECU 40. The function of the bowing speed Nset is set. Further, the clutch operation detecting means 42 is provided at the rotation base of the clutch lever 23 which performs the connection and the disconnection of the clutch mechanism 23, and the switching operation of the forward rotation and the reverse rotation, and the rotation operation is performed. The detection signal is input to the ECU 40 to switch the clutch mechanism 23. The engine revolution number sensor 44 is disposed near the output shaft 1 1 of the engine 100. The sensor 44 is used as the actual engine revolution detecting hand Q segment, has the actual engine revolution Ne detected, and is sent to the ECU 40. The rack actuator 46 adjusts the fuel injection according to the target injection amount. The number of devices is used as a means of selection 'for the various functions of the engine 100, with the function of performing selection or setting. The water temperature sensor 48 has the function of detecting the cooling for the cooling of the engine 100. The water temperature T of the water is sent to the function of the ECU. The water temperature sensor 48 is installed in, for example, a cooling water passage (not shown) to detect the cause -9 - 201043775 for the operation of the external air or the engine. The water temperature τ ° of the cooling water that changes in the state is described below with respect to the engine speed control at the time of engine cold start. When the engine is started, when the water temperature T of the cooling water is below a predetermined temperature ( When the cold start is started, the rotation number correction control is executed. The revolution correction control system sets the final target engine revolution number Nsetf to be higher than the corrected target engine revolution number N of the set engine revolution number Nset input by the accelerator operation detecting means 41. In the above-described revolution correction control, as shown in FIG. 2, after the timing of the start of the engine start, the timing point ti' when the identification engine is started is detected by the water temperature sensor 48. When the water temperature T of the cooling water is equal to or lower than the lower limit water temperature T1, the ECU 40 of the control device 20 raises the final target engine revolution number Nsetf to the correction target engine revolution number Nset' higher than the set engine revolution number Nset. As shown in FIG. 3, when the water temperature T of the cooling water temperature at the timing t1 of the engine start detected by the water temperature sensor 48 is higher than the lower limit water temperature Τ1, the ECTU40 of the control device 20 is not The revolution correction control is executed. With such a configuration, the combustion efficiency of the injected fuel can be improved by increasing the number of revolutions of the engine when the cold engine is started, and the amount of black smoke discharged when the cold engine is started can be reduced. In addition, it can promote the temperature rise of the engine 1 to make the black smoke disappear early. Further, in the above-described revolution number correction control, when the clutch operation detecting means 42 is operated, when the clutch mechanism 23 is connected and "ON" is switched, the final target engine revolution number Nsetf can be corrected to the correction target engine -10- 201043775 The number of revolutions Nset' rises, so the number of engine revolutions at the time of switching can be reduced, and the maneuverability of the ship can be improved. When the water temperature T of the cooling water rises, the ECU 40 of the control device 20 executes the rotation number correction release control, and the rotation speed correction release control sets the final target engine revolution number Ns etf. It is the same as the set engine revolution number Nset input by the accelerator operation detecting means 41. In the above-described rotation number correction control, as shown in Fig. 2, when the water temperature 冷却 of the cooling water detected by the water temperature sensor 48 rises to the release water temperature Τ2 or more, the control device 20 The ECU 40 starts the timing point t2 and sets the final target engine revolution number Nsetf to be the same as the set engine revolution number Nset input by the accelerator operation detecting means 41. In the above-described rotation number correction control, when the clutch operation detecting means 42 is operated and the clutch mechanism 23 is connected to "ON", the ECU 40 of the control device 20 executes the rotation number Q correction release control. The revolution correction cancellation control system sets the final target engine revolution number Nsetf to be the same as the set engine revolution number Nset input by the accelerator operation detecting means 41. In the above-described rotation number correction release control, as shown in Fig. 4, when the clutch mechanism 23 is connected and "ON" is switched, the final target engine revolution number Nsetf is not higher than the operator by the timing point t3. The number of engine revolutions above the set number of engine revolutions is set. In this way, the ship can be manipulated by the number of engine revolutions preset by the operator. Further, when the clutch mechanism 23 is connected to "ON" and the -11 - 201043775 rpm correction release control is executed, if the engine is stopped afterwards, if the ECU 40 of the control device 20 is not activated, the number of revolutions will not be corrected. control. For example, as shown in Fig. 4, when the clutch mechanism 23 is connected, the operation is switched to "ON", and after the above-described rotation number correction release control is executed, the clutch mechanism 23 is turned off, and when the switch is turned "OFF", even if the timing point t4 is cooled. The water temperature T of the water is equal to or lower than the lower limit water temperature T1, and the ECU 40 of the control device 20 does not perform the above-described number of revolution correction control. Thereafter, when the engine 100 is stopped and restarted, the ECU 40 of the control device 20 executes the number of revolutions correction control as long as the water temperature T of the cooling water is equal to or lower than the lower limit water temperature T1. In this way, the ship can be manipulated by the number of engine revolutions preset by the operator. Further, when the water temperature sensor 48 fails, as shown in Fig. 5, the ECU 40 of the control device 20 does not perform control for raising the final target engine revolution number Ns etf. With such a configuration, it is possible to prevent the ECU 40 of the control device 20 from erroneously executing the revolution correction control except when the refrigerator is started. As described above, the engine 1 includes a water temperature sensor 48 that performs cooling of the cooling water of the engine 100, an engine revolution number sensor 44, a clutch operation detecting means 42 for switching the clutch mechanism 23, and a determination. The accelerator operation detecting means 41 for setting the engine revolution number Nset, and the control device 20 for automatically controlling the final target engine revolution number Ns etf; when the water temperature T of the cooling water at the time of engine start is equal to or lower than the predetermined temperature T1, the above control The device 2 0 -12- 201043775 performs the revolution correction control. The revolution correction control sets the final target engine revolution number Nsetf to be higher than the corrected target engine set by the accelerator detecting means 41 to set the engine revolution number Ns et The number of revolutions Ns et'. With this configuration, the fuel efficiency of the fuel can be improved by increasing the number of engine revolutions, and the amount of black smoke discharged when the refrigerator is started can be reduced. In addition, the temperature rise of the engine 100 can be promoted to cause the black smoke to disappear early. When the water temperature T of the cooling water at the start of the engine reaches the predetermined temperature T2, the control device 20 cancels the rotation number correction control. According to this configuration, as a result of increasing the number of engine revolutions, when the engine temperature rises steadily, the engine number Nset set by the operator can be operated. When the number-of-rotation correction control is executed, the control device 20 adjusts the number of engine revolutions at the start of the rotation correction control and the number of revolutions correction map f(N) stored in the memory device 51 of the control device 20 Perform the revolution correction control. With this configuration, the engine revolution can be smoothly moved by controlling the amount of change in the number of revolutions of the engine when the refrigerator is started. Further, when the number of rotations correction control is enabled, the control device 20 switches the clutch mechanism 23 to "ON" by the clutch operation detecting means 42 and switches the clutch mechanism 23 to "ON". The number-of-turns correction control is executed based on the number of engine revolutions at the timing when the clutch mechanism 23 is switched to "on" and the number of revolutions correction map f'(N) stored in the memory device 51 of the control device 20 The number of revolutions is corrected to release the control. -13- 201043775 With such a configuration, after the clutch mechanism 23 is switched to "ON", the amount of change in the number of revolutions of the engine can be controlled to gradually reduce the number of revolutions of the engine and shift toward the set engine revolution number Nset. Therefore, when the engine 100' is used as a ship engine, for driving the engine of the propulsion unit 110, the deterioration of the maneuverability of the ship can be prevented. Further, when the above-described control device 20 executes the number-of-rotation correction release control, the engine 100 is stopped, and the number-of-turns correction control is not executed unless it is restarted. With such a configuration, it is possible to prevent the number of revolution correction control from being continuously performed in the state of entering the ship. Further, if it is judged that the water temperature sensor 48 is malfunctioning before the engine is started, the revolution correction control is not executed. With this configuration, it is possible to prevent the number of revolution correction control from being erroneously executed except when the cold engine is started. [Industrial Applicability] The present invention is applicable to an engine, particularly an engine having a control device that can perform engine revolution control when the engine is cold-started. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic front view showing the overall configuration of an engine according to an embodiment of the present invention. Figure 2 is a graph showing the number of engine revolutions and the relationship between cooling water temperature and time. -14- 201043775 Figure 3 is a graph showing the number of engine revolutions and the relationship between cooling water temperature and time. Figure 4 is a graph showing the number of engine revolutions and the relationship between cooling water temperature and time. Figure 5 is a graph showing the number of engine revolutions and the relationship between cooling water temperature and time. 0 [Description of main component symbols] 10: Engine body 20: Control device 23: Clutch mechanism
40 ： ECU 41 :加速器操作檢測手段 42 :離合器操作檢測手段 44 =引擎轉數感測器 〇 47 :接點輸入裝置 48 :水溫感測器 5〇 :運算裝置 5 1 :記億裝置 100：弓丨擎40: ECU 41: accelerator operation detecting means 42: clutch operation detecting means 44 = engine revolution number sensor 47: contact input means 48: water temperature sensor 5: arithmetic means 5 1 : remembering 100: Bow 丨 丨
Nset :設定引擎轉數 Ne :實際引擎轉數 -15-Nset : Set engine revolutions Ne : Actual engine revolutions -15-