Power transmission device for hybrid vehicle
AssigneeHyundai Motor Company
InventorsJun Hoi Huh, Buhm Joo Suh, Seok Joon Kim
Life of this patent
Estimating the term…
Abstract
A power transmission device for a hybrid vehicle includes a series-parallel type power transmission path capable of varying an engine output for each driving mode, using a Ravigneaux gear train and two or more clutches, to improve the fuel efficiency of the hybrid vehicle. The power transmission device includes two or more kinds of engine fixing gear stages capable of distributing the output of the engine to a driving wheel, which are implemented using the Ravigneaux gear train, in which a single pinion planetary gear is integrally configured with a double pinion planetary gear including a carrier obtained by combining two pinion gears with the two or more clutches.
Claims18
A power transmission device for a hybrid vehicle, comprising:
- an engine;
- a first motor for generation, connected to a first input shaft from the engine on a same axle;
- a first planetary gear set connected to the first input shaft extended from the engine via the first motor so that power of the engine is transmitted from the first planetary gear set to the first input shaft;
- a first clutch mounted at an end portion of the first input shaft, so as to transmit or disconnect the power of the engine to or from any one of a plurality of operational elements of the first planetary gear set through a second input shaft;
- a second clutch mounted at the end portion of the first input shaft, so as to transmit or disconnect the power of the engine to or from another of the plurality of operational elements of the first planetary gear set through a third input shaft;
- a second planetary gear set integrally combined with the first planetary gear set, so as to output the power of the engine, transmitted from the first planetary gear set, to a driving wheel through an output shaft or to directly output the power of a second motor for driving to the driving wheel through the output shaft;
- the second motor connected to any one of operational elements of the second planetary gear set so as to directly output the power of the engine to the driving wheel;
- and
- a battery to or from which electric power generated through charging/discharging of the first and second motors driven by the power of the engine is input/output.
A hybrid vehicle, comprising:
- a power transmission device, comprising:
- an engine;
- a first motor for generation, connected to a first input shaft from the engine on a same axle;
- a first planetary gear set connected to the first input shaft extended from the engine via the first motor so that power of the engine is transmitted from the first planetary gear set to the first input shaft;
- a first clutch mounted at an end portion of the first input shaft, so as to transmit or disconnect the power of the engine to or from any one of a plurality of operational elements of the first planetary gear set through a second input shaft;
- a second clutch mounted at the end portion of the first input shaft, so as to transmit or disconnect the power of the engine to or from another of the plurality of operational elements of the first planetary gear set through a third input shaft;
- and
- a second planetary gear set integrally combined with the first planetary gear set, so as to output the power of the engine, transmitted from the first planetary gear set, to a driving wheel through an output shaft or to directly output the power of a second motor for driving to the driving wheel through the output shaft,
- wherein the second motor is connected to any one of operational elements of the second planetary gear set so as to directly output the power of the engine to the driving wheel.
Dependencies are inferred from the claim text.