Renault S.a.s.

Compagnie Generale Des Etablissements Michelin

Michelin Recherche Et Technique S.a.

Olivier Scheffges

Abdelmalek Maloum

Ahmed Ketfi-Cherif

Maxime Debert

Gregory Launay

Herve Couetoux

Nicolas Guilloz

Grégory Launay

A method controls a motor vehicle including an internal combustion engine coupled to a first axle set and to at least two electric machines each one coupled to one wheel of a second axle set. The method includes determining the speed of at least one of the electric machines; comparing the determined speed against a threshold; and altering, if the determined speed is above the threshold, the maximum torque of the electric machines so as to limit the rotational speed of the machines.

System and method for controlling a motor vehicle with independent rear electric machines

A method for controlling actuation of a control device to be integrated into a starter of a combustion engine. The device includes a solenoid controlling a position of a starter sprocket capable of being inserted into a ring gear kinematically connected to a crankshaft of the engine. The sprocket can be driven by an electric motor of the starter by closing a first switched power line between a battery and the starter. The device includes an auxiliary relay and at least one power resistor mounted in series, thus forming a second switched power line parallel to the first switched line for powering, with a supply current lower than the maximum current, the electric motor of the starter driving the sprocket. The method switches the auxiliary relay to accelerate the sprocket of the starter, determines rotation speed of the ring gear, determines duration of the acceleration phase of the sprocket, inserts the sprocket of the starter into the engine ring, switches the first switched power line, withdraws the sprocket of the starter from the engine ring, and cuts any power supply to the electric motor of the starter.

Method for controlling the starter of a combustion engine and application thereof

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Clamart, France

Olivier Scheffges