Patent ID: 8020461

Claim:
A travel drive system for a hybrid vehicle, comprising; a thermal engine with an engine output shaft carrying a clutch, a driven shaft connected to said clutch and linked to a speed variation means, at least one electric machine with a rotor, a motion transmission chain between said speed variation means and wheels of the vehicle, said chain comprising an output shaft for the speed variation means and a motive axle connected to said output shaft for the speed variation means, a first disengageable coupling between one of the elements of the transmission chain and said rotor of said at least one electric machine, the first disengageable coupling comprising a pinion axially mobile along said rotor and a first part provided on said one element of said transmission chain and said rotor and engageable with said pinion, and a second disengageable coupling between said output shaft of said thermal engine and said rotor, the second disengageable coupling comprising said pinion and a second part provided on said engine output shaft and engageable with said pinion.