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US 8,998,761 B2Granted
Transmission for hybrid vehicle
AssigneeHyundai Motor Company
InventorsBaekyu Kim, Kyungha Kim, Yeonho Kim
Life of this patent
Estimating the term…
Abstract
A transmission for a hybrid vehicle is provided to implement one or more electric vehicle modes, two or more power split modes, and a plurality of fixed-gear ratio modes that can improve driving performance and fuel efficiency.
Claims6
A transmission for a hybrid vehicle comprising:
- a first planetary gear set that includes at least four rotary members, including a rotary member connected to an engine and two rotary members selectively connected with each other;
- a second planetary gear set that includes at least three rotary members including a rotary member continuously connected to a rotary member of the first planetary gear set and a rotary member both connected to an output member and selectively connected to another rotary member of the first planetary gear set;
- a first fixing device that is provided to restrict rotation of a rotary member of the second planetary gear set other than the rotary member continuously connected to the rotary member of the first planetary gear set and the rotary member both connected to the output member and selectively connected to another rotary member of the first planetary gear set;
- a second fixing device that is provided to restrict rotation of a rotary member of the first planetary gear set other than the rotary members selectively connected with each other and the rotary member continuously connected with the rotary member of the second planetary gear set;
- a third torque transfer device that is disposed to selectively connect and disconnect a rotary member of the first planetary gear set and a rotary member of the second planetary gear set;
- a fourth torque transfer device that is disposed to selectively connect and disconnect two rotary members of the first planetary gear set;
- a first motor generator that is connected to a rotary member of the first planetary gear set;
- and a second motor generator that is connected to a rotary member of the second planetary gear set.
5 more elements
Dependencies are inferred from the claim text.