| 摘要 |
The present disclosure provides a power split transmission (10a) with three forward Electric Variable Transmission (EVT) modes, one reverse EVT mode, and five fixed gears for use in hybrid electrical vehicles. The present disclosure utilizes two electric motors (14,16), an engine, three planetary gear sets (18, 20, 22), three selectively engageable clutches (30, 32, 38), and two selectively engageable brakes (34, 36). The clutches (30, 32, 38) and brakes (34, 36) are engaged in different combinations to engage the different gears and EVT modes. In the five fixed gears, power is transmitted only on the mechanical path for the highest transmission efficiency. In the EVT modes, a part of the power is transmitted electrically. Additionally, the present disclosure includes a front E-motor designed allowing scalable E-motors (14, 16) and a modular transmission design and a center E-motor design. |
