| 摘要 |
PROBLEM TO BE SOLVED: To provide a fuel injection control device that enables short engine start time in an internal combustion engine driven by alcohol mixed fuel.SOLUTION: A fuel injection control device includes a control section for controlling a start injection amount Qs injected from a fuel injection valve. When an alcohol concentration of alcohol mixed fuel is higher than a predetermined concentration, the control section executes injection amount control for controlling the amount of the alcohol mixed fuel injected from the fuel injection valve per fuel injection to an amount smaller than that enabling an air-fuel ratio to be a combustible air-fuel ratio in fuel injection until initial explosion is generated after start of cranking. Thus this can inhibit a cylinder air-fuel ratio from becoming excessively rich after the initial explosion, so as to enable short engine start time. |
