Abstract: A powertrain apparatus may include a planetary gear set including a first rotary member connected to a first motor and selectively operating as an input element or a fixing element, a second rotary member supplied with power from an engine and selectively operating as an input element, and a third rotary member connected to an output shaft and selectively operating as an output element, a second motor supplying power to a motor input shaft, and a transmission including a plurality of pairs of engaged gears forming different transmission gear ratios, the pairs of engaged gears being provided on the motor input shaft and the output shaft, respectively, with an engaging unit provided on the motor input shaft at a location between the pairs of engaged gears and selecting one of the pairs of engaged gears corresponding to a driving speed.

Abstract: A hybrid vehicle powertrain may include input shafts, clutches, output shafts, a transmission path selector, a planetary gear unit, and a gear stage forming mechanism. The transmission path selector may bring engagement of a first input shaft with second or third input shaft. The planetary gear unit may have three rotary elements, with motor power or engine power being input via a second rotary element, and being output with two transmission gear ratios under the control of a first rotary element in response to engagement of an engaging unit. The gear stage forming mechanism may be formed by engagement of gear pairs having different transmission gear ratios with second and third input shafts and a first output shaft, and function to transmit the power from the second or third input shaft to the first output shaft while changing a speed by selecting a gear pair in accordance with a vehicle running speed using a gear pair selector.

Abstract: A system and method of controlling a transmission having a synchro-mesh type shifting mechanism are provided. The method includes disengaging a sleeve of a synchronizer from a first clutch gear to engage the sleeve with the second clutch gear. A speed of the second clutch gear is synchronized with a speed of the sleeve. Engagement of the sleeve with the second clutch gear is the completed together with the synchronization. Therefore, the length of torque interruption is reduced and smoother shifting is achieved.

Abstract: A hybrid power train for a vehicle is capable of improving fuel efficiency of the vehicle by preventing a motor from being driven by power of an engine for a period in which the vehicle is driven by the engine. The hybrid power train may include an input shaft installed to selectively receive power of an engine, an engine side driving gear provided at the input shaft, an output shaft disposed in parallel with the input shaft, an engine side driven gear provided at the output shaft so as to be engaged with the engine side driving gear, a motor side driving gear installed to be rotated by a motor while forming a concentric axis with the input shaft, a motor side driven gear rotatably provided at the output shaft so as to be engaged with the motor side driving gear, and a clutch unit installed to switch a state in which the motor side driven gear is fixed to the output shaft.

Abstract: A powertrain for a hybrid vehicle may include a first input shaft connected to a motor generator and coupled to a dog clutch apparatus, and a second input shaft connected to an engine and coupled to a planetary gear set, in which when the vehicle is overdriven, the dog clutch apparatus is engaged and restricts one component of the planetary gear set.

Abstract: A transmission for a vehicle may include an input shaft connected to a power source, an output shaft disposed in parallel with the input shaft, a synchromesh type shift mechanism including at least two pairs of external gear pairs and a synchronous device which may be installed on the input shaft and the output shaft, and a clutch device provided on a power transfer path connected from the input shaft to the output shaft through the external gear pair and configured to connect the synchronous device in parallel with the power transfer path.

Abstract: A transmission apparatus for an electric vehicle may include an input shaft receiving torque from a power source, an output shaft disposed in parallel with the input shaft, a first driving gear disposed on the input shaft, a second driving gear disposed on the input shaft, a first driven gear disposed on the output shaft and generating a first transmission gear ratio by engaging with the first driving gear, a second driven gear disposed on the output shaft to rotate integrally with the output shaft and generating a second transmission gear ratio by engaging with the second driving gear, a first clutch member changing connection of the first driving gear or the second driving gear to the input shaft, a second clutch member changing connection of the first driving gear to the input shaft, and a third clutch member changing connection of the second driving gear to the input shaft.

Abstract: A two-speed transmission for a vehicle may include a first input shaft, a second input shaft connected to a motor, and a clutch unit for selectively transmitting the power of the motor to an output shaft from the first input shaft and/or the second input shaft. The clutch unit may synchronize rotation speeds of the first input shaft and the second input shaft when the power of the motor is transmitted to the output shaft from the first input shaft.

Abstract: A two-speed transmission for a vehicle may include an input shaft that receives power from a motor, a planetary gear unit that receives power from the input shaft and transmits it to an output shaft, and a clutch unit that is installed on the planetary gear unit and determines an element concerning variation of a rotation speed of the motor.

Abstract: An automated manual transmission includes an input, an output disposed in parallel with the input, a common use planetary gear device disposed on the input or the output, a shift gear device in which a plurality of external gear mates having different shift ratios are disposed on the input and the output, and a friction member disposed to transmit the rotation power transmitted to the input at the time of the braking to the output through the external gear mates.

Abstract: An automated manual transmission may include a first input shaft and a second input shaft disposed in parallel with each other to form a plurality of stages with a common output shaft, a first switching mechanism that directly transmits or cuts power provided from a flywheel of an engine to or from the first input shaft or the second input shaft, and a second switching mechanism that transmits or cuts power provided from the flywheel through the clutch to or from the first input shaft or the second input shaft.

Abstract: A hybrid power train for vehicles, including a drive shaft rotated by engine power, an engine-side drive gear concentrically installed on the drive shaft so as to be rotated by drive shaft power, first and second power transmission control units configured to form different power transmission paths for transmitting power from the drive shaft to the engine-side drive gear, and to control respective power transmission states, an output shaft arranged in parallel to the drive shaft, an engine-side driven gear rotatably provided on the output shaft so as to mesh with the engine-side drive gear, a clutch unit for switching the operating state of the engine-side driven gear between a fixed state and a released state relative to the output shaft, a motor-side drive gear rotated by motor power, and a motor-side driven gear fixedly provided on the output shaft so as to mesh with the motor-side drive gear.

Abstract: A hybrid transmission for a vehicle may include a first input shaft receiving power from an engine through a first clutch, a second input shaft disposed parallel to the first input shaft and receiving power from the engine through a path different from that of the first input shaft, a power control unit selectively transmitting the power of the first input shaft to the second input shaft, an output shaft disposed parallel to the first input shaft and the second input shaft, a common shift module including a plurality of shift gears and synchronous apparatuses to form any one shift stage, a motor connected to the first input shaft, and a planetary gear set having rotary elements connected to one shift gear on the first input shaft and the second input shaft, respectively, and another rotary element capable of changing a fixed state.

Abstract: A hybrid vehicle powertrain may include input shafts, clutches, output shafts, a transmission path selector, a planetary gear unit, and a gear stage forming mechanism. The transmission path selector may bring engagement of a first input shaft with second or third input shaft. The planetary gear unit may have three rotary elements, with motor power or engine power being input via a second rotary element, and being output with two transmission gear ratios under the control of a first rotary element in response to engagement of an engaging unit. The gear stage forming mechanism may be formed by engagement of gear pairs having different transmission gear ratios with second and third input shafts and a first output shaft, and function to transmit the power from the second or third input shaft to the first output shaft while changing a speed by selecting a gear pair in accordance with a vehicle running speed using a gear pair selector.

Abstract: A hybrid vehicle powertrain may include input shafts, clutches, output shafts, a transmission path selector, a planetary gear unit, and a gear stage forming mechanism. The transmission path selector may bring engagement of a first input shaft with second or third input shaft. The planetary gear unit may have three rotary elements, with motor power or engine power being input via a first or second rotary element and being output with any one of two transmission gear ratios under the control of first or third rotary element in response to engagement of first and second engaging units. The gear stage forming mechanism may be formed by engagement of gear pairs having different transmission gear ratios with second and third input shafts and a first output shaft, and function to transmit the power from the second or third input shaft to the first output shaft while changing a speed by selecting a gear pair in accordance with a vehicle running speed using a gear pair selector.

Abstract: An automated manual transmission for a vehicle may include a shifting section between an input shaft and an output shaft, and a continuously variable power transfer unit disposed between the output shaft and the power providing device, wherein the continuously variable power transfer unit includes, a driving circular plate engaged to the power providing device, a driven circular plate engaged to the output shaft of the shifting section and arranged in parallel to the driving circular plate, the driven circular plate being rotatable around a first rotation shaft spaced in parallel from a second rotation shaft of the driving circular plate, a driving member disposed between the driven circular plate and the driving circular plate and a driving member adjustment device selectively moving the driving member.

Abstract: A hybrid power train for a vehicle may include an input shaft, an engine side driving gear mounted at the input shaft, an output shaft, an engine side driven gear fixedly mounted at the output shaft and meshed with the engine side driving gear, a motor side driving gear and mounted to rotate by the motor, a motor side driven gear fixedly mounted at the output shaft and meshed with the motor side driving gear, an output gear rotatably mounted at the output shaft, a one way clutch mounted between the output gear and the output shaft, a clutch device mounted on the output shaft, and a planetary gear apparatus engaging between the output shaft and the output gear.

Abstract: An automated manual transmission apparatus for a vehicle, may include a shifting unit having a plurality of stages between an input shaft and an output shaft and selectively cutting power to the input shaft and the output shaft when shifting between the stages, and a continuous transmission mechanism that may be disposed between the output shaft and a power supply that supplies the power to the input shaft of the shifting unit, wherein the continuous transmission mechanism selectively transmits the power from the power supply to the output shaft with a continuous transmission gear ratio.

Abstract: A hybrid power train for a vehicle may include an input shaft, an engine-side drive gear provided on the input shaft, an output shaft, an engine-side driven gear rotatably provided on the output shaft and meshed with the engine-side drive gear, a motor-side drive gear rotated by a motor, a motor-side driven gear fixedly provided on the output shaft and meshed with the motor-side drive gear, an output gear rotatably provided on the output shaft, a one way clutch installed between the output gear and the output shaft, a clutch unit provided to switch an operating state of the output gear and to switch an operating state of the engine-side driven gear between a fixed state and a released state relative to the output shaft, and a planetary gear mechanism installed to couple the output shaft and the output gear to each other.

Abstract: A hybrid power train for a vehicle may include a shift module with a plurality of shift steps of a synchro-mesh type provided on a first input shaft and an output shaft, a second input shaft driven by a motor and arranged coaxially with the first input shaft, a shaft clutch means for coupling/decoupling the second input shaft and the first input shaft, a motor side driving gear arranged rotatably on the second input shaft, a motor side driven gear arranged rotatably on the output shaft to be meshed with the motor side driving gear, a first clutch means for coupling/decoupling the motor side driving gear to/from the second input shaft, a second clutch means provided for coupling/decoupling the motor side driven gear to/from the output shaft, and a variable gear ratio providing means provided on the second input shaft to alternatively transfer a rotational force of the second input shaft to the output shaft.