Abstract: A lubrication system of a transmission includes a plurality of oil passages formed in an upper portion of a transmission case and supplied with churning oil, a plurality of oil outlets branched from respective oil passages formed in the transmission case and allowing oil supplied from the oil passages to free-fall, and an oil collecting portion formed at an interior of the case wall between the gear case and the motor case. In particular, the oil collecting portion collects oil free-falling from at least one oil outlet branched from at least one oil passage at the gear case, through a through-hole formed at a case wall of the gear case, and then supplies the collected oil to an exterior lubrication portion.

Abstract: An electronic brake system includes an electromagnet housing in which an inner disk install end is integrally formed around the inside surface. An electromagnet is disposed inside of the electromagnet housing. A motor plate is installed at a motor/generator, and in which an outer disk install end disposed outside of the inner disk install end in a radial direction is integrally formed around one side surface. A disk unit is provided in which a plurality of the inner disks and the outer disks are overlapped between the inner disk install end and the outer disk install end to be combined each other through friction by virtual pressure. A piston is disposed according to the inside surface of the electromagnet housing, connected with a plunger being introduced along the support end of the rear cover, and operated by electromagnetic force of the electromagnet to supply virtual pressure to the disk unit.

Abstract: A power transmission apparatus for a hybrid vehicle may include a planetary gear set as a torque branching device disposed on the same axis with the engine; and a final reduction device having a final reduction gear receiving a torque of the engine and a torque of the second motor/generator, wherein, the torque of the engine is delivered to the final reduction gear through the planetary gear set, an intermediate shaft, and an output gear formed on an output shaft, and the torque of the second motor/generator is delivered to the final reduction gear through a shifting device facilitating multi-stages of torque transmission.

Abstract: A torque vectoring system may include a first planetary gear set that may include first, second, and third rotation elements, wherein the first rotation element is selectively connectable to one of the left-side output shaft and the right-side output shaft through a coupling element, the second rotation element is selectively connectable to the one output shaft through a coupling element, and the third rotation element is fixedly connected to a housing; and a second planetary gear set that may include fourth, fifth, and sixth rotation elements, and the fourth rotation element is fixedly connected to the first rotation element, the fifth rotation element is connected to the differential such that power may be transmitted thereto, and the sixth rotation element is fixedly connected to the second rotation element.

Abstract: A pulse width modulation resonance converter is provided that includes a transformer and a switching unit including first to fourth switches electrically connected to a primary coil of the transformer and configured to convert a DC voltage into an AC voltage by a switching operation of the first to fourth switches in which each switch is switched from an off state to an on state when a voltage difference between both ends is about 0. Additionally, a rectifying unit includes an output capacitor, first to fourth diodes electrically connected to a secondary coil of the transformer, and a resonance tank having a resonance capacitor and a resonance inductor which are electrically connected to the secondary coil of the transformer. The plurality of switches connected to the primary side of the transformer perform the zero-voltage switching using the magnetized inductance of the primary side to minimize the switching loss.

Abstract: A transmission for a hybrid vehicle may include an input shaft into which power generated by an engine is input, an output shaft disposed coaxially with the input shaft, a first planetary gear set, a second planetary gear set, and a third planetary gear set disposed between the input shaft and the output shaft to transmit rotational force, each of the first to third planetary gear sets having first, second and third rotary elements, a first motor generator and a second motor generator each connected to the first to third rotary elements of the first to third planetary gear sets, and at least three shifting elements each connected to the first to third rotary elements of the first to third planetary gear sets.

Abstract: A power transmission system for a hybrid electric vehicle may include an engine, a planetary gear set, and first and second motor/generators, and transmit rotational power of the engine and rotational power of the second motor/generator to a final reduction gear including a differential through independent paths, respectively, in which a sun gear is directly connected with the first motor/generator through a first motor shaft and selectively connectable with a transmission housing, a planet carrier is directly connected with an input shaft and connected with the transmission housing with a one-way clutch and a torque limiter positioned therebetween, a ring gear is directly connected with a first output gear and connected with a final reduction gear through a first intermediate shaft, and the second motor/generator is directly connected with a second output gear through a second motor shaft and connected with the final reduction gear through a second intermediate shaft.

Abstract: A lubrication system of a transmission includes a plurality of oil passages formed in an upper portion of a transmission case and supplied with churning oil, a plurality of oil outlets branched from respective oil passages formed in the transmission case and allowing oil supplied from the oil passages to free-fall, and an oil collecting portion formed at an interior of the case wall between the gear case and the motor case. In particular, the oil collecting portion collects oil free-falling from at least one oil outlet branched from at least one oil passage at the gear case, through a through-hole formed at a case wall of the gear case, and then supplies the collected oil to an exterior lubrication portion.

Abstract: A power transmission apparatus for a hybrid vehicle may include a planetary gear set as a torque branching device disposed on the same axis with the engine; and a final reduction device having a final reduction gear receiving a torque of the engine and a torque of the second motor/generator, wherein, the torque of the engine is delivered to the final reduction gear through the planetary gear set, an intermediate shaft, and an output gear formed on an output shaft, and the torque of the second motor/generator is delivered to the final reduction gear through a shifting device facilitating multi-stages of torque transmission.

Abstract: A lubrication system of a transmission provides oil passages in an upper portion of a transmission case, and an oil dispensing guider at the transmission case for dispensing churning oil to the oil passages. The oil dispensing guider includes a guiding surface bent at multiple points along a length direction so as to fit bottoms of the oil passages, a slanted guide surface formed along the guiding surface and being slant upward so as to guide oil on the slanted guide surface to the guiding surface, sockets integrally formed at the guiding surface and respectively inserted into the oil passages, and an oil collecting portion formed along an exterior edge of the guiding surface and the slanted guide surface and bent from the exterior edge so as to collect the churning oil splashed toward the oil dispensing guider.

Abstract: An electronic brake system includes an electromagnet housing in which an inner disk install end is integrally formed around the inside surface. An electromagnet is disposed inside of the electromagnet housing. A motor plate is installed at a motor/generator, and in which an outer disk install end disposed outside of the inner disk install end in a radial direction is integrally formed around one side surface. A disk unit is provided in which a plurality of the inner disks and the outer disks are overlapped between the inner disk install end and the outer disk install end to be combined each other through friction by virtual pressure. A piston is disposed according to the inside surface of the electromagnet housing, connected with a plunger being introduced along the support end of the rear cover, and operated by electromagnetic force of the electromagnet to supply virtual pressure to the disk unit.

Abstract: A power transmission system for a hybrid electric vehicle may include an engine, a planetary gear set, and first and second motor/generators, and transmit rotational power of the engine and rotational power of the second motor/generator to a final reduction gear including a differential through independent paths, respectively, in which a sun gear is directly connected with the first motor/generator through a first motor shaft and selectively connectable with a transmission housing, a planet carrier is directly connected with an input shaft and connected with the transmission housing with a one-way clutch and a torque limiter positioned therebetween, a ring gear is directly connected with a first output gear and connected with a final reduction gear through a first intermediate shaft, and the second motor/generator is directly connected with a second output gear through a second motor shaft and connected with the final reduction gear through a second intermediate shaft.

Abstract: A DC-DC converter includes: a clamp capacitor having one terminal connected with a ground terminal of a voltage source; a switching circuit including first and second switches connected with each other in series between a positive terminal and the ground terminal of the voltage source, and third and fourth switches connected with each other in series between both terminals of the clamp capacitor; and a forward-flyback transformer including a plurality of primary coils connected between a first connection node between the first and second switches and a second connection node between the third and fourth switches.

Abstract: A transmission structure of a hybrid electric vehicle (HEV) may include an engine connected to a front wheel of the hybrid vehicle, a planetary gear part connected to the engine, a first motor generator connected to the planetary gear part, an overdrive brake connected to the first motor generator, and a second motor generator connected to a rear wheel of the hybrid vehicle.

Abstract: A transmission for a hybrid vehicle includes a planetary gear set including at least three rotary members of which one is connected to an engine. A first anti-rotator selectively restricts rotation of the rotary member connected to the engine. A first motor generator is connected to another one of the rotary members of the planetary gear set. A second motor generator is connected to the remaining one of the rotary members of the planetary gear set. An output shaft has a first output gear thereon, which is externally engaged with the rotary member connected to the first motor generator. A second anti-rotator selectively restricts rotation of the rotary member connected to the second motor generator.

Abstract: A method for controlling a hybrid vehicle is provided. The method includes setting a driving path of the vehicle based on an input destination and current position and predicting a future speed of the vehicle using information regarding the driving path, environmental information, and driving pattern information of a driver. An optimum power distribution map is derived including an optimum SOC trajectory and a power distribution ratio of the engine and the motor using the predicted future speed. Additionally, engine power and motor power is distributed using the optimum SOC trajectory and a power distribution ratio of the engine and the motor.

Abstract: A power transmission system of a hybrid electric vehicle may include an engine being a power source, a torque transmission device including four rotation shafts and a compound planetary gear set, the torque transmission device converting torque input from the engine, and outputting a converted torque, two supplemental power sources respectively connected to two rotation shafts among the four rotation shafts of the torque transmission device and supplying generated torque to the torque transmission device, two friction members selectively connecting two rotation shafts among the four rotation shafts of the torque transmission device to a transmission housing, an output device outputting torque transmitted from the torque transmission device, and a final reducing device decelerating torque transmitted from the output device and outputting the decelerated torque through a differential apparatus.

Abstract: A hybrid transmission for a vehicle may include an input shaft configured to receive a power of an engine transferred thereto, an input clutch configured to connect the input shaft to the engine or to intercept connection of the input shaft to the engine, a motor directly connected to the input shaft, a first output shaft and a second output shaft provided with a plurality of driven gears that are tooth-engaged with a plurality of drive gears installed on the input shaft to form a plurality of gear shift stages, and a power control device provided to switch the power of the engine that is transferred to the first output shaft or the second output shaft.

Abstract: A method for controlling a hybrid vehicle is provided. The method includes setting a driving path of the vehicle based on an input destination and current position and predicting a future speed of the vehicle using information regarding the driving path, environmental information, and driving pattern information of a driver. An optimum power distribution map is derived including an optimum SOC trajectory and a power distribution ratio of the engine and the motor using the predicted future speed. Additionally, engine power and motor power is distributed using the optimum SOC trajectory and a power distribution ratio of the engine and the motor.

Abstract: A transmission for a hybrid vehicle may include an input shaft into which power generated by an engine is input, an output shaft disposed coaxially with the input shaft, a first planetary gear set, a second planetary gear set, and a third planetary gear set disposed between the input shaft and the output shaft to transmit rotational force, each of the first to third planetary gear sets having first, second and third rotary elements, a first motor generator and a second motor generator each connected to the first to third rotary elements of the first to third planetary gear sets, and at least three shifting elements each connected to the first to third rotary elements of the first to third planetary gear sets.