| 摘要 |
PROBLEM TO BE SOLVED: To prevent the occurrence of a misfire and the deterioration in operability when the air-fuel ratio becomes extremely lean because liquefied petroleum gas vaporized inside an injector is injected and supplied when liquefied fuel gas is supposed to be injected and supplied into and to an internal combustion engine in a liquid state, in a fuel supply control device of the internal combustion engine for supplying fuel to the internal combustion engine by selectively or simultaneously controlling first and second fuel supply means according to the operation state of the internal combustion engine, on the basis of the first fuel supply means for supplying the liquefied petroleum gas to the internal combustion engine, the second fuel supply means for supplying liquid fuel or gas fuel to the internal combustion engine. SOLUTION: When starting operation of the internal combustion engine by only supply of the liquefied petroleum gas, the liquefied petroleum gas is injected by an almost minimum fuel injection quantity of a fuel injector for the liquefied petroleum gas in a prescribed period, and the liquid fuel or the gas fuel is simultaneously injected for satisfying a required fuel supply quantity determined by a prescribed condition of the internal combustion engine. Afterwards, the operation is switched to operation by only the liquefied petroleum gas. COPYRIGHT: (C)2003,JPO |
