Abstract: A hybrid vehicle and operating method, wherein, given a pending change in the rotational speed of a combustion engine of the hybrid vehicle, provides for a battery, independently of the power to be transmitted to the driving wheels, to be so charged or discharged in a directed manner that the change in rotational speed is effected as swiftly as possible. With regard to fuel consumption, pollutant emission and/or care of the engine, optimal operating points are passed through. On the one hand in the case of a pending increase in power of the combustion engine, it is provided for the battery to be more heavily discharged or less heavily charged according to the initial situation, and in the case of a pending reduction in power, to be more heavily charged or less heavily discharged.

Abstract: The invention concerns a driving system for a hybrid-powered motor vehicle. It includes a generator set producing a direct current used by a driving set with an electric motor for driving at least one driving wheel of the vehicle. Using an accelerator, the driver gives a power set-point signal that is used by a first adjusting device which acts on the thermal engine, the generator, and the AC/DC converter of the generator set. A second adjusting device adjusts the power of the driving set as a slave of the generator set, according to the variations in the voltage of the supply circuit with respect to a desired voltage, without considering the signal from the accelerator.

Abstract: The invention concerns a method for adjusting the electric power distribution in a direct voltage supply circuit (2) in a motor vehicle, e.g. a hybrid-powered vehicle comprising an electric generator set (1) and one or several electric elements (3, 6, 7, 8) capable of consuming and/or producing power in the supply circuit, one of said electric elements being an electric driving set (3) capable of driving the driving wheels (4) of the vehicle.The power of the generator set is adjusted on the basis of a power demand given by the driver. One (3, 7) of said electric elements is defined as a power balancing element. A desired voltage (U.sub.0c) of the supply circuit is determined, the effective voltage (U.sub.0) of said circuit is continuously monitored, and the power of the balancing element is adjusted so as to maintain the effective voltage at the level of the desired voltage.