PROBLEM TO BE SOLVED: To properly suppress hunting at which interruption and restart of fuel supply are repeated.SOLUTION: A fuel supply control device for a vehicle includes: a vehicle speed sensor which detects a vehicle speed; and a processor which calculates a requirement drive force on the basis of a relationship between the vehicle speed and a target vehicle speed, and performs hunting suppression control in place of normal control when there is detected hunting at which interruption and restart of fuel supply to an engine are repeated accompanied by an increase and decrease of the requirement drive force during the normal control which interrupts and restarts the fuel supply to the engine on the basis of the calculated requirement drive force. During the interruption of the fuel supply to the engine, the hunting suppression control restarts the fuel supply when the vehicle speed becomes lower than the target vehicle speed by a first prescribed value, and during the fuel supply to the engine, interrupts the fuel supply when the vehicle speed becomes higher than the target vehicle speed by a second prescribed value.
【課題】 燃料供給の中断及び再開が繰り返されるハンチングを適切に抑制すること。【解決手段】車両用燃料供給制御装置は、車速を検出する車速センサと、車速と目標車速との関係に基づいて要求駆動力を算出し、算出した要求駆動力に基づいてエンジンに対する燃料供給を中断及び再開する通常制御中に、前記要求駆動力の増減に伴ってエンジンに対する燃料供給の中断及び再開が繰り返されるハンチングを検出した場合に、前記通常制御に代えてハンチング抑制制御を実行する処理装置とを含み、前記ハンチング抑制制御は、エンジンに対する燃料供給の中断中は、車速が前記目標車速よりも第1の所定値以上小さくなった場合に燃料供給を再開し、エンジンに対する燃料供給中は、車速が前記目標車速よりも第2の所定値以上大きくなった場合に燃料供給を中断することを含む。【選択図】図1
FUEL SUPPLY CONTROL DEVICE FOR VEHICLE
車両用燃料供給制御装置
2015-09-28
Patent
Electronic Resource
Japanese
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