| 摘要 |
An internal combustion engine control apparatus controls an internal combustion engine including: an exhaust passage (4) comprised of branch portions (5L, 5R) provided for the left and right banks (2L, 2R) and a common portion (6) in which an exhaust gas purification device (7) is provided; and a fuel supply system (10) that supplies fuel to the respective engine cylinders (3). In the internal combustion engine, in order to recover the exhaust gas purification device (7), a bank control is executed in which the air-fuel ratio of the cylinders (3) of the left bank (2L) is made rich while the air-fuel ratio of the cylinders (3) of the right bank (2R) is made lean. The internal combustion engine is capable of running on alcohol-containing fuel and has an alcohol concentration sensor (13). The amount of unburned fuel to be supplied to the exhaust gas purification device (7) during the bank control is adjusted based on the alcohol concentration in fuel. |
