Hyundai Motor Company

Talchol Kim

Changwook Lee

Jongsool Park

Byungsoon Min

Yeonho Kim

Baekyu Kim

YoungChul Kim

Kyungha Kim

Jaeshin Yi

Wansoo Kim

Heera Lee

The transmissions for a hybrid vehicle according to the present invention provide multiple electric vehicle modes, multiple power split modes, and multiple fixed-gear ratio modes, thereby increasing driving performance and fuel efficiency.

Transmission for hybrid vehicle

Disclosed is a power train of a hybrid vehicle that includes a first, second and third planetary gear sets each having first, second and third elements; a first motor generator connected with the first element of the second planetary gear set and the first element of the third planetary gear set; a second motor generator connected with the first element of the first planetary gear set; an engine connected with the second element of the second planetary gear set and the second element of the third planetary gear set; an output shaft connected with the second element of the first planetary gear set and the third element of the second planetary gear set; a brake selectively restraining rotation of the third element of the first planetary gear set; and a clutch selectively engaging/disengaging the third element of the first planetary gear set with the third element of the third planetary gear set.

Power train of hybrid vehicle

A power train according to an embodiment of the invention includes three sets of planetary gear sets, one clutch, and two brakes, such that it provides two electric vehicle modes, two hybrid modes, and two engine modes of overdrive shift ratio. Further, the power train of a hybrid vehicle has a simple configuration, high power performance, and reduced weight and fuel consumption, while being easily equipped in the vehicle. In particular, since an engine mode that makes it possible to reduce a significant amount of fuel consumption especially when a vehicle is traveling at a constant high-velocity.

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Incheon, South Korea

Talchol Kim