To more surely reduce exhaust emission at a start of an engine.SOLUTION: A fuel injection control device of an internal combustion engine comprises: a fuel injection valve; and a heating mechanism for heating engine cooling water by a lubricant of a power transmission device, and heating a cylinder bore wall by supplying the heated engine cooling water to the internal combustion engine. At a restart of the engine after the lapse of a preset set time from a stop of an operation of the engine, injection to a piston is performed after performing injection to the bore wall over an injection time tB to the bore wall. When the heating mechanism has been already operated at the restart of the engine, the injection time tB to the bore wall is set long compared with the case when the heating mechanism is stopped at the restart of the engine.SELECTED DRAWING: Figure 6
【課題】機関始動時に排気エミッションをより確実に低減する。【解決手段】内燃機関の燃料噴射制御装置は、燃料噴射弁と、機関冷却水を動力伝達装置の潤滑油により加熱するとともに、加熱された機関冷却水を内燃機関に供給することによりシリンダボア壁を加熱するように構成された加熱機構と、を備える。先の機関運転停止からあらかじめ定められた設定時間を経過した後の機関再始動時には、ボア壁向け噴射をボア壁向け噴射時間tBにわたり行った後に、ピストン向け噴射を行う。機関再始動時に加熱機構が既に作動されているときには機関再始動時に加熱機構が停止されているときに比べて、ボア壁向け噴射時間tBを長く設定する。【選択図】図6
FUEL INJECTION CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
内燃機関の燃料噴射制御装置
2019-09-19
Patent
Electronic Resource
Japanese
IPC: | F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / F01M Schmierung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , LUBRICATING OF MACHINES OR ENGINES IN GENERAL / F01P Kühlung von Kraft- und Arbeitsmaschinen oder Kraftmaschinen allgemein , COOLING OF MACHINES OR ENGINES IN GENERAL |
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