Abstract: A method of controlling an add-on mobility includes measuring a force in a front-rear direction between a main body vehicle and the add-on mobility by a force sensor connecting the main body vehicle and the add-on mobility and controlling a driving force and a braking force of the add-on mobility according to a magnitude of the force in the front-rear direction measured by the force sensor.

Abstract: A powertrain apparatus for an electric vehicle, includes a planetary gear set including three rotation elements, a first motor connected to a first rotation element of the planetary gear set, a differential engaged to a second rotation element of the planetary gear set, a second motor connected to a third rotation element of the planetary gear set, and a synchronizer configured to selectively connect or disconnect between a driveshaft coupled to one side of the differential and the second motor and to selectively connect or disconnect between the second rotation element of the planetary gear set and the third rotation element of the planetary gear set.

Abstract: Disclosed is a powertrain for a hybrid vehicle including a first motor provided to be selectively connected to an engine, a second motor provided to be selectively connected to the first motor, and an output shaft provided to transfer the rotational force of the second motor to drive wheels of the vehicle.

Abstract: Disclosed is a powertrain for a hybrid vehicle including a first motor provided to be selectively connected to an engine, a second motor provided to be selectively connected to the first motor, and an output shaft provided to transfer the rotational force of the second motor to drive wheels of the vehicle.

Abstract: An embodiment hybrid powertrain for a vehicle includes a first input shaft configured to be interlocked with an engine, a second input shaft configured to be interlocked with a first motor and to be parallel to the first input shaft, a third input shaft configured to be interlocked with a second motor and to be parallel to the second input shaft, an output shaft mounted parallel to the third input shaft, a first selective mesh device configured to transmit power from the second input shaft to the output shaft at multiple different gear ratios, a second selective mesh device configured to transmit the power from the third input shaft to the output shaft at the multiple different gear ratios, and a third selective mesh device configured to transmit the power from the first input shaft to the second input shaft or the third input shaft.

Abstract: A power transmission apparatus of a hybrid electric vehicle may include an input shaft receiving an engine torque output from an engine, an output shaft disposed at a same axis with the input shaft and outputting a shifted torque, first and second motor/generators, a first shifting section including a first planetary gear set, outputting a rotation speed from the input shaft as inputted or increased, or forming an adjusted torque from the engine torque and torques of the first and second motor/generators, and outputting the adjusted torque, and a second shifting section including a compound planetary gear set formed as a combination of second and third planetary gear sets and outputting a shifted torque at least three stages from a torque received from the first shifting section to the output shaft.

Abstract: A power transmission apparatus of a hybrid electric vehicle may include an input shaft receiving an engine torque, an output shaft disposed at a same axis with the input shaft and outputting a shifted torque, first and second motor/generators, a first shifting section including a compound planetary gear set formed as a combination of first and second planetary gear sets, forming an adjusted torque from the engine torque received through two paths and torques of the first and second motor/generators, and outputting the adjusted torque, and a second shifting section including a third planetary gear set and outputting a shifted torque of two stages from a torque received from the first shifting section to the output shaft.

Abstract: A power transmission apparatus of a hybrid electric vehicle may include an input shaft receiving an engine torque, an output shaft disposed at a same axis with the input shaft and outputting a shifted torque, first and second motor/generators, a first shifting section including a compound planetary gear set formed as a combination of first and second planetary gear sets, forming an adjusted torque from the engine torque received through two paths and torques of the first and second motor/generators, and outputting the adjusted torque, and a second shifting section including a third planetary gear set and outputting a shifted torque of two stages from a torque received from the first shifting section to the output shaft.

Abstract: A power transmission apparatus of a hybrid electric vehicle may include an input shaft receiving an engine torque output from an engine, an output shaft disposed at a same axis with the input shaft and outputting a shifted torque, first and second motor/generators, a first shifting section including a first planetary gear set, outputting a rotation speed from the input shaft as inputted or increased, or forming an adjusted torque from the engine torque and torques of the first and second motor/generators, and outputting the adjusted torque, and a second shifting section including a compound planetary gear set formed as a combination of second and third planetary gear sets and outputting a shifted torque at least three stages from a torque received from the first shifting section to the output shaft.

Abstract: Disclosed are a power system for an electric vehicle and a control method of a power system for an electric vehicle. The power system may include a first motor and a second motor configured as a power source, first and second reduction gears connected to the first and second motors and having different deceleration ratios, a driving shaft transmitting outputs of the first and second reduction gears, and a motor controller configured to determine a first driving point where the first motor responds according to a demand torque of a driver and a driving condition of the vehicle and a second driving point where the second motor responds according to the demand torque of the driver and the driving condition of the vehicle, and control driving by using at least one of an output torque of the first motor and/or an output torque of the second motor according to the determined driving point.

Abstract: Disclosed is system for a hybrid vehicle that includes an engine, a transmission, and a battery. The system may further include a first clutch configured to connect the engine with the transmission and having a first part and a second part; a first motor/generator configured to be connected to the first part and directly connected to the transmission; a second motor/generator configured to be connected to the second part; and a second clutch configured to connected the second motor/generator with the transmission. In particular, the first part and the second part may be clutches that can operate independently.

Abstract: Disclosed are a power system for an electric vehicle and a control method of a power system for an electric vehicle. The power system may include a first motor and a second motor configured as a power source, first and second reduction gears connected to the first and second motors and having different deceleration ratios, a driving shaft transmitting outputs of the first and second reduction gears, and a motor controller configured to determine a first driving point where the first motor responds according to a demand torque of a driver and a driving condition of the vehicle and a second driving point where the second motor responds according to the demand torque of the driver and the driving condition of the vehicle, and control driving by using at least one of an output torque of the first motor and/or an output torque of the second motor according to the determined driving point.

Abstract: A hydraulic power train for a hybrid vehicle is provided, which can selectively transmit power of a hydraulic driving unit or an engine to driving wheels using a double pinion planetary gear and a synchro sleeve in addition to the hydraulic driving unit. More specifically, a hydraulic power train for a hybrid vehicle is provided, which can achieve various driving modes and maximize the fuel efficiency, by combining a hydraulic driving unit, a double pinion planetary gear, and a synchro-type transmission to implement a continuously variable transmission for a hybrid vehicle that can selectively transmit power of an engine or a hydraulic driving unit.

Abstract: Disclosed is a power delivery device for a vehicle that improves power delivery efficiency. More specifically, the power delivery device includes a first motor having a first drive shaft directly connected to an output shaft of an engine, a second motor having a second drive shaft directly connected to an input shaft of a gearbox, and a clutch selectively connecting the output shaft of the engine with the input shaft of the gearbox.

Abstract: Disclosed is system for a hybrid vehicle that includes an engine, a transmission, and a battery. The system may further include a first clutch configured to connect the engine with the transmission and having a first part and a second part; a first motor/generator configured to be connected to the first part and directly connected to the transmission; a second motor/generator configured to be connected to the second part; and a second clutch configured to connected the second motor/generator with the transmission. In particular, the first part and the second part may be clutches that can operate independently.

Abstract: A power transmitting apparatus of hybrid vehicles that transmits torque from an engine and first and second motor/generators to an output shaft is provided. The apparatus may include: a first planetary gear set having a first operating member fixedly connected to the second motor/generator, a second operating member selectively connected to the first operating member, and a third operating member; and a second planetary gear set having a fourth operating member fixedly connected to the engine and selectively connected to the second operating member, a fifth operating member fixedly connected to the first motor/generator and selectively connected to the second operating member, and a sixth operating member fixedly connected to the third operating member and the output shaft. With the apparatus, fuel efficiency can be remarkably improved.

Abstract: Disclosed are a power train structure that can operate hybrid vehicles in an electric mode at its startup and/or lower speed stages and a method of operation of the same.

Abstract: A power transmitting apparatus of hybrid vehicles that transmits torque from an engine and first and second motor/generators to an output shaft is provided. The apparatus may include: a first planetary gear set having a first operating member fixedly connected to the second motor/generator, a second operating member selectively connected to the first operating member, and a third operating member; and a second planetary gear set having a fourth operating member fixedly connected to the engine and selectively connected to the second operating member, a fifth operating member fixedly connected to the first motor/generator and selectively connected to the second operating member, and a sixth operating member fixedly connected to the third operating member and the output shaft. With the apparatus, fuel efficiency can be remarkably improved.

Abstract: A double clutch transmission is described that ideally changes torque received from an engine and a motor by providing an optimal layout in power transmission scheme and motor location. Such a double clutch transmission is optimally adapted to a hybrid electric vehicle, and an optimal operation method for such a double clutch transmission is also provided, overcoming inefficiency in application of a conventional CVT to an HEV.

Abstract: Disclosed are a power train structure that can operate hybrid vehicles in an electric mode at its startup and/or lower speed stages and a method of operation of the same.