Patent ID: 9545841
Date: 2017-01-17
CPC Classifications: B60K,B60Y,F16H,Y02T,Y10S

Claim:
1. A hybrid powertrain unit for a motor vehicle, comprising: an internal-combustion engine; a gearbox device including: a differential, having a first crown wheel meshing with said output pinion of said at least one secondary shaft of the gearbox device; an electric machine adapted to operate both as an electric motor and as an electric generator and having a casing rigidly connected to a supporting structure of said powertrain unit, and a shaft connected by a transmission to a second crown wheel of said differential; an engagement device arranged, in said transmission, between the shaft of the electric machine and the second crown wheel of the differential; and an actuator arrangement for actuating said engagement device, wherein the shaft of the electric machine is connected to the shaft of the internal-combustion engine at an end thereof opposite to an end connected to the gearbox device by a belt transmission including an endless belt engaged on a first pulley connected to the shaft of the electric machine and on a second pulley connected to the shaft of the internal-combustion engine; wherein said unit further comprises one or more auxiliary devices of the motor vehicle, the one or more auxiliary devices including one or more of a compressor for an air-conditioning system and a source of negative pressure for the braking system; wherein said belt transmission controls said one or more auxiliary devices via an auxiliary shaft arranged coaxially with respect to the shaft of the electric machine; and wherein said one or more auxiliary devices are mounted coaxially with respect to the shaft of the electric machine.