| 摘要 |
PURPOSE:To properly correct an amount of injection at all times by adding to an accumulated value of amounts of correction, one yielded by multiplying the amount of correction for every time estimated in response to deviations among variations of rotation for each cylinder by a coefficient of correction estimated in response to amounts of the variations of the rotation. CONSTITUTION:An ECU58 judges, in operation of an engine, whether or not a state of NE1 is two cylinders or more of being a minimum value Nl among NE1-NE4 for the same number of a cylinder in the rmp NEi (i=1-4) of an engine for each 45 deg. CA under the condition of the engine being under an idle stable state. Judged YES, the NE1 is determined to be the minimum rpm Nl, and furthermore the miximum rpm is retrieved among the rpms other than the NE1 and is designated as Nh. In succession, variations of rotation for each explosion cylinder are detected from a difference between the rpms Nh and Nl, and an amount of correction is estimated in conformity with a deviation between an averaged value of said detected variations of rotation and variations of rotation for each cylinder. An amount of injection of the engine is corrected on the basis upon a value yielded by multiplying said amount of correction by a coefficient of correction estimated in response to the amount of variations for each rotation. |
