Hybrid motor vehicle

A hybrid powertrain system for a motor vehicle comprising:

• a heat engine;
• a first motor/generator having a rotor with a rotor shaft, the rotor shaft having first and second opposite ends;
• a first clutch operatively connected between an output shaft of said heat engine and the first end of the rotor shaft of said first motor/generator;
• a second motor/generator having a rotor with a rotor shaft, the rotor shaft having first and second opposite ends;
• a second clutch operatively connected between the second end of the rotor shaft of said first motor/generator and the first end of the rotor shaft of said second motor/generator;
• a final drive unit operatively connected to the second end of the rotor shaft of the second motor/generator;
• a battery;
• and
• a control unit for selectively controlling the heat engine and the first and second clutches, and for selectively connecting the battery to the first and second motor/generators, wherein during low vehicle speeds, the first clutch may be closed and the second clutch may be opened for permitting the heat engine to drive the first motor/generator for recharging the battery and for permitting only the second motor/generator to propel the vehicle, and during high vehicle speeds, both of the first and second clutches may be closed for propelling the vehicle by the engine and the first and second motor/generators.