Patent ID: 10118478

Abstract:
An input shaft (1) connectable to an engine (5), an output gear (2), a transmission case (3) and a Ravigneaux planetary gear unit (4) are provided. Four rotational elements of the Ravigneaux planetary gear unit (4) are a single pinion side sun gear (Ss), a carrier (C), a ring gear (R) and a double pinion side sun gear (Sd) which are arranged orderly on a common speed diagram. The single pinion side sun gear (Ss) is constantly connected to a motor/generator (6), and the ring gear (R) is constantly connected to the output gear (2). And, with usage of a low & reverse clutch (L&R/C), a high clutch (H/C) and a low brake (L/B), a first speed (1st), a second speed (2nd), a third speed (3rd) and a stepless change speed (eCVT) are established.