Process for controlling the motor assembly of a hybrid vehicle

The method involves determining a set of possible values of irreversible engine power of consumption in instantaneous energy, and power delivered to a pure reversible engine from estimated speed value, torque set point and pre-registered data. A point is chosen as a functioning point from the values such that a specified relation is satisfied to control irreversible and reversible engines if functioning mode is a hybrid mode. The wheel torque set point desired by a driver is estimated based on a variable depending on action of driver on acceleration control.