| 摘要 |
A transmission for a hydraulic hybrid motor vehicle, comprising a planetary gear train (30) capable of differential operation, comprising a first element (32) linked to a heat engine (34), a second element (40) linked to the drive wheels (22), and a third element (36) linked to a hydraulic pump (64), this transmission (1) further comprising a means for driving the drive wheels (8) by a hydraulic machine (2), characterised in that the link between the third element (36) of the planetary gear train (30) and the hydraulic pump (64) comprises a speed reducer (38, 60) that provides, when the whole of this train is rotating at the same speed, a reduction in the speed of rotation of the pump relative to that of the heat engine (34) that is greater than a value of approximately two. |
