High-efficiency drive system including a transmission for a hybrid electric vehicle

摘要

A high-efficiency drive system including a transmission for a hybrid electric vehicle is provided. The system includes a gear set having first, second and third elements. A non-friction clutch assembly is non-hydraulically controlled to change between a first coupling state for coupling the output shaft of an electrical machine to a transmission output shaft and an uncoupling state for uncoupling the output shaft of the electrical machine from the transmission output shaft. The clutch assembly is also non-hydraulically controlled to change between a second coupling state for coupling the output shaft of a non-electrical machine to the transmission output shaft and the uncoupling state for uncoupling the output shaft of the non-electrical machine from the transmission output shaft.

主权项

1. A high-efficiency drive system including a
transmission for a hybrid electric vehicle, the system comprising: a gear set including first, second and third elements, the first element connecting connectable with a transmission output shaft, an output shaft of a non-electrical machine connecting with the second element for driving the second element; a transmission housing; a first electrical machine having a first output shaft connectable with the first element and the transmission output shaft for driving the transmission output shaft in response to an electrical signal; a second electrical machine having a second output shaft connectable with the third element for driving the third element, the output shaft of the non-electrical machine connectable with the third element through the second element for driving the third element; and a non-friction clutch assembly being non-hydraulically controlled to change between a first coupled state for coupling either the first or second output shaft to the transmission output shaft and a first uncoupled state for uncoupling whichever of the first or second output shafts had been coupled from the transmission output shaft, the clutch assembly also being non-hydraulically controlled to change between a second coupled state for coupling the output shaft of the non-electrical machine to the transmission output shaft and a second uncoupled state for uncoupling the output shaft of the non-electrical machine from the transmission output shaft.