PROBLEM TO BE SOLVED: To provide a gaseous fuel engine control device capable of avoiding an erroneous determination about a residual amount of fuel while assuring a combustion stability.SOLUTION: A gaseous fuel engine control device for reducing pressure of hydrogen in a hydrogen tank with a regulator 109 and supplying it to an engine 10 comprises a pressure sensor 110 for detecting a pressure of hydrogen after its pressure is reduced by the regulator 109; a fuel injection executing part 100a for setting an injection pulse width on the basis of a requisite fuel injection amount set on the basis of a vehicle running state and a pressure detected by the pressure sensor 110 and executing the fuel injection with the injection pulse width with a maximum injection pulse width set on the basis of a predetermined combustion stability limit until a predetermined waiting period elapses being applied as an upper limit when the pressure detected by the pressure sensor 110 is lower than the predetermined threshold; and a determination part 100b judging that a residual amount of hydrogen in the hydrogen tank is reduced less than the predetermined reference residual amount when the pressure detected by the pressure sensor 110 is lower than the threshold also after the waiting period elapses.SELECTED DRAWING: Figure 2
【課題】燃焼安定性を確保しつつ燃料残量の誤判断を回避できる気体燃料エンジンの制御装置を提供する。【解決手段】水素タンク内の水素をレギュレータ109で減圧してエンジン10に供給する気体燃料エンジンの制御装置は、レギュレータ109で減圧された後の水素の圧力を検出する圧力センサ110と、車両の走行状態に基き設定される要求燃料噴射量と圧力センサ110で検出される圧力とに基き噴射パルス幅を設定し、圧力センサ110で検出される圧力が所定の閾値よりも低いときは、所定の待機期間が経過するまで所定の燃焼安定限界に基き設定される最大噴射パルス幅を上限として上記噴射パルス幅で燃料噴射を実行する燃料噴射実行部100aと、上記待機期間が経過した後も圧力センサ110で検出される圧力が上記閾値よりも低いときに水素タンク内の水素残量が所定の基準残量よりも少なくなったと判断する判断部100bとを備える。【選択図】図2
GASEOUS FUEL ENGINE CONTROL DEVICE
気体燃料エンジンの制御装置
2016-08-12
Patent
Electronic Resource
Japanese
IPC: | F02D CONTROLLING COMBUSTION ENGINES , Steuern oder Regeln von Brennkraftmaschinen / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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 / F02B INTERNAL-COMBUSTION PISTON ENGINES , Brennkraftmaschinen mit innerer Verbrennung mit Verdrängerwirkung / F02M Zuführen von Brennstoff-Luft-Gemischen oder deren Bestandteilen bei Brennkraftmaschinen allgemein , SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF |
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