| 摘要 |
PROBLEM TO BE SOLVED: To provide a torsional vibration damping method for a vehicle driving system, capable of efficiently and quickly damping torsional vibration generated on a driving system in accelerating or decelerating. SOLUTION: In this vibration damping method, fluctuation of the engine rotational speed to be fluctuated by torsional vibration generated on a driving system in accelerating or decelerating of a vehicle is detected, and the fuel injection amount is successively increased or decreased and corrected so as to negate the fluctuation. In this case, the basic fuel injection amount Qbase is found from the accelerator opening APS and the engine rotational speed RPM, the torque minimum fuel injection amount Qbad in which driving force is started to be applied to the vehicle is found from the water temperature Tw and the engine rotational speed RPM, the difference Qabs is found by subtracting the torque minimum fuel injection amount Qbad from the basic fuel injection amount Qbase, and the rotational fluctuation correcting fuel injection amount Qacl2 for negating the fluctuation of the engine rotational speed RPM on the basis of the difference Qabs, the engine rotational speed RPM, and the engine rotational speed fluctuation amounts Delta RPM, DDeltaRPM.
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