Method for improving acceleration reponse of a hybrid vehicle

During vehicle deceleration, the target value of the reserve generated power of a generator (4) is computed so that the acceleration performance required by subsequent re-acceleration is ensured, the lower limit of the rotation speed of the generator (4) during deceleration is computed so that the reserve generated power of the generator (4) does not become smaller than the target value of the reserve generated power, and the rotation speed of the generator (4) is limited so that the rotation speed of the generator (4) does not decrease lower than the lower limit during vehicle deceleration. This prevents the rotation speed of the generator (4) and engine (1) from decreasing too much during deceleration, and ensures good acceleration performance at re-acceleration.