HYBRID POWERTRAIN UNIT FOR MOTOR VEHICLES WITH A BELT TRANSMISSION DEVICE BETWEEN ELECTRIC MACHINE AND DIFFERENTIAL

摘要

A hybrid power train unit comprises an internal combustion engine (E) and a gear box device (C). The gear box device (C) comprises a first shaft (3) which can be connected to a shaft (5) of the internal combustion engine (E) via a clutch device (6). The gear box device (C) includes a second shaft (7) comprising an output pinion (9) interlocked with the first crown wheel (10) of a differential gear device (D), and a casing (11) thereof is connected to a casing (2) of the gear box device (C) strongly. A unit includes an electric machine (M) which is configured to function as both an electric motor and an electric generator, and the electric machine comprises a shaft (16) connected to a second crown wheel (19) of the differential gear device (D) by a transmission device. During connection of the transmission device, an engagement device (25) able to be driven through an electronic control operator is arranged between the second crown wheel (19) of the differential gear device (D) and the shaft (16) of the electric machine (M). The shaft (16) of the electric machine (M) is connected to the shaft (5) of the internal combustion engine (E) at a side opposite to the gear box device. The transmission device connecting the shaft (16) of the electric machine (M) to the second crown wheel (19) of the differential gear device (D) includes at least one gear deceleration jump constituted by a belt transmission device (29).