| 摘要 |
PROBLEM TO BE SOLVED: To provide an abnormality determination device of an internal-combustion engine capable of accurately determining the presence or absence of abnormality in a fuel-feeding condition of the internal-combustion engine, and eventually in a combustion condition even with a simple and low-cost constituent elements.SOLUTION: The abnormality determination device of the internal-combustion engine includes: a revolution speed information acquiring unit for acquiring revolution speed information on a revolution speed of each cylinder of the internal-combustion engine 1; a feedback controller for correcting the amount of fuel supply to the cylinder according to a feedback correction value so that the deviation of the revolution speed information among the cylinders is reduced; and an abnormality determination device for determining the presence or absence of the abnormality in the internal-combustion engine according to the feedback correction value and a predetermined value. The feedback correction value is set according to the deviation of the revolution speed information among the cylinders and a sensitivity constant which is varied under predetermined conditions. |
