FUEL SUPPLY DEVICE, FUEL SUPPLY DEVICE CONTROL METHOD AND VEHICLE

To provide a technique which inexpensively improves start-up performance of an internal combustion engine when a temperature is low in order to contribute to carbon neutrality.SOLUTION: A fuel supply device which supplies mixed fuel including alcohol fuel comprises: a fuel tank which stores the mixed fuel; main piping which leads the mixed fuel to a fuel injection device; sub-piping which leads the mixed fuel to the fuel injection device; temperature information acquisition means which acquires external temperature information when an internal combustion engine is started up; concentration information acquisition means which acquires concentration information on an alcohol concentration of the mixed fuel stored in the fuel tank; and control means which switches a lead-out route of the mixed fuel from the fuel tank to the fuel injection device between the main piping and the sub-piping. The sub-piping is preliminarily provided with the mixed fuel having the alcohol concentration equal to or less than a predetermined concentration stored in the fuel tank. The control means switches between the main piping and the sub-piping on the basis of the external temperature information and the concentration information.SELECTED DRAWING: Figure 1 【課題】カーボンニュートラルに貢献するために、低温時における内燃機関の始動性の向上を低コストに行う技術を提供すること。【解決手段】アルコール燃料を含む混合燃料を供給する燃料供給装置は、混合燃料を貯留する燃料タンクと、燃料噴射装置へ混合燃料を導出するためのメイン配管と、燃料噴射装置へ混合燃料を導出するためのサブ配管と、内燃機関の始動時の外気温情報を取得する温度情報取得手段と、燃料タンクに貯留された混合燃料のアルコール濃度の濃度情報を取得する濃度情報取得手段と、燃料タンクから燃料噴射装置への混合燃料の導出経路を、メイン配管とサブ配管とで切り替える制御手段と、を備え、サブ配管には、燃料タンクに貯留されていた、アルコール濃度が所定濃度以下の混合燃料が事前に貯留され、制御手段は、始動時に、外気温情報と濃度情報とに基づいて、メイン配管とサブ配管とで切り替える。【選択図】図１