Method for starting an internal combustion engine ignition control has

At launch, the internal combustion engine is coupled to an electric machine (10) and supplied with air via an intake manifold (2) provided with a member (4) flow control of air motorise.Selon the invention, following a start command, the electric machine is controlled (10) so that it delivers its total available power, the member (4) flow control and advance ignition (6) being at minimales.Pendant positions the rotation of the electric machine, comparing the speed to a speed threshold and the pressure in the intake manifold (2) to a fuel pression.Du threshold is injected as soon as the following combined conditions are satisfied: the speed threshold is exceeded upwards and the pressure threshold has been crossed downward. Then, cutting the electric machine (10). Then, engine operating parameters is controlled to establish its idling speed.