| 摘要 |
PROBLEM TO BE SOLVED: To reduces vibrations and noise by inhibiting hunting in ISC control without causing engine stalling during idle operation of a flexible fuel internal combustion engine (for example, engine 1) capable of using alcohol-containing fuel.SOLUTION: A determination is made whether a first condition that a temperature state of an internal combustion engine is cold at a predetermined value or below and an alcohol concentration of fuel is higher than or equal to a predetermined value is satisfied and whether a second condition that indicates that a probability that the internal combustion engine stalls is lower than or equal to a predetermined level is satisfied (steps S5, S7). When both of the first and second conditions are satisfied, control over an intake amount is limited (step S8); whereas, when at least one of the first and second conditions is not satisfied, the limit is not applied (step S6). |
