Patent application number | Description | Published |
20110294617 | GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A gear train of an automatic transmission realizes at least ten forward speeds and one reverse speed by combining four simple planetary gear sets with four clutches and two brakes and three friction elements are operated at each shift-speed such that the gear train has advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy. | 12-01-2011 |
20120004066 | GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A gear train of an automatic transmission for vehicles which achieving at least ten forward speeds and one reverse speed, may include an input shaft receiving torque of an engine which may be driving source, an output gear outputting a changed torque, first, second, third, and fourth planetary gear sets respectively having first, second, third, and fourth sun gears, first, second, third, and fourth planet carriers, and first, second, third, and fourth ring gears as rotation elements thereof, eight rotation shafts formed by connecting one rotation element to other rotation element, the input shaft, or the output gear, or being the rotation element, and friction members provided with first, second, third, and fourth clutches disposed between selected rotation shafts and controls delivery of the torque therebetween and first and second brakes selectively connecting selected rotation shaft to a transmission housing. | 01-05-2012 |
20120270694 | PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A planetary gear train of an automatic transmission may include an input shaft configured to receive an engine torque, an output shaft configured to output a shifted torque, a first compound planetary gear set including first and second simple planetary gear sets having first and second sun gears, first and second planet carriers, and first and second ring gears as rotation elements, a second compound planetary gear set including third and fourth simple planetary gear sets having third and fourth sun gears, third and fourth planet carriers, and third and fourth ring gears as rotation elements, seven rotational shafts connecting to one to more rotation elements, and seven friction members including three clutches interposed between a rotational shaft and the input shaft to control the torque and four brakes selectively connecting a rotational shaft to a transmission housing. | 10-25-2012 |
20120277052 | PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A planetary gear train of an automatic transmission for vehicles may include an input shaft adapted to receive torque of an engine, an output gear adapted to output changed torque, a first planetary gear set having a first sun gear, a first planet carrier, and a first ring gear as rotation elements, a second planetary gear set having a second sun gear, a second planet carrier, and a second ring gear as rotation elements, a third planetary gear set having a third sun gear, a third planet carrier, and a third ring gear as rotation elements, seven rotation shafts connected or selectively connected to one or more rotation elements, other rotation shafts, or a transmission housing, and six friction members interposed selectively at connecting portions of the rotation shafts. | 11-01-2012 |
20120302393 | PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A planetary gear train of an automatic transmission may include an input shaft; an output gear; a first compound planetary gear set having four rotation elements by combining first and second planetary gear sets; a second compound planetary gear set having four rotation elements by combing third and fourth planetary gear sets; eight rotational members including two rotation elements connected to each other or one rotation element among the rotation elements of the first and second compound planetary gear sets; and seven friction members including three clutches interposed between a selected rotational member among the rotational members and the input shaft and adapted to selectively transmit the torque and four brakes interposed between a rotational member among the rotational members and a transmission housing. | 11-29-2012 |
20120302394 | PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A planetary gear train may include an input shaft, an output gear adapted to output a shifted torque, a first compound planetary gear set having four rotation elements by combining first and second planetary gear sets, a second compound planetary gear set having four rotation elements by combining third and fourth planetary gear sets, eight rotation shafts including two rotation elements connected to each other or one rotation element among the rotation elements of the first and second compound planetary gear sets, and six friction members including three clutches interposed between a selected rotational shaft among the rotational shafts and the input shaft and adapted to selectively transmit the torque and three brakes interposed between a selected rotational shaft among the rotational shafts and a transmission housing. | 11-29-2012 |
20130075216 | HYDRAULIC CLUTCH - A hydraulic pressure clutch includes a first connecting hub on an input shaft, an inner sleeve, a boss, an outer sleeve, a clutch drum, a second connecting hub, a first piston forming a first piston chamber together with the second connecting hub, first clutch plates disposed on an outer protrusion and selectively pushed by the first piston along an axial direction, first friction disks disposed alternately with the first clutch plates, a first balance wall forming a first balance chamber, a second piston forming a second piston chamber, second clutch plates selectively pushed by the second piston along an axial direction, second friction disks disposed alternately with the second clutch plates, and a second balance wall forming a second balance chamber, wherein the first piston penetrates through the outer protrusion for pushing the first clutch plates. | 03-28-2013 |
20130075217 | HYDRAULIC CLUTCH - A hydraulic pressure clutch includes a first connecting hub including first, second, and third oil holes, a transmission case having first, second, and third oil supply portions, an inner sleeve having first, second, and third oil passages, a boss having fourth, fifth, and sixth oil passages, an outer sleeve having seventh and eighth oil passages, a clutch drum, a second connecting hub, a first piston forming a first piston chamber, a plurality of first clutch plates, a plurality of first friction disks disposed alternately with the first clutch plates, a first balance wall forming a first balance chamber, a second piston forming a second piston chamber, a plurality of second clutch plates, a plurality of second friction disks disposed alternately with the second clutch plates, and a second balance wall forming a second balance chamber, wherein the first and second balance chambers are supplied simultaneously through one oil line. | 03-28-2013 |
20130150202 | Planetary Gear Train of Automatic Transmission for Vehicles - A planetary gear train may include an input shaft, an output gear, a compound planetary gear set including a first and second sun gears, a common planet carrier, and a common ring gear, a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear, a first rotational member consisting of the second sun gear, a second rotational member consisting of the common planet carrier selectively connected to the input shaft, a third rotational member consisting of the common ring gear connected to the output gear, a fourth rotational member consisting of the first sun gear, a fifth rotational member consisting of the third ring gear connected to the input shaft, a sixth rotational member consisting of the third planet carrier, a seventh rotational member consisting of the third sun gear operated as a selective fixed element, and friction members. | 06-13-2013 |
20140113765 | PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A planetary gear train of an automatic transmission may include a first planetary gear set including a first ring gear directly connected to a first shaft, a first planet carrier, and a first sun gear, a second planetary gear set disposed on a second shaft and including a second sun gear receiving an inverse rotation speed from the first planet carrier, a second ring gear selectively connected to the second shaft, and a second planet carrier, a third planetary gear set including a third sun gear directly connected to the second shaft, a third ring gear selectively connected to the first sun gear, and a third planet carrier directly connected to the second planet carrier and directly connected to an output gear, three transfer gears interposed between rotation elements, and five frictional elements selectively interconnecting the rotation elements or selectively connecting the rotation elements to a transmission housing. | 04-24-2014 |
20140148300 | PLANETARY GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE - A vehicular planetary gear train may include: a first input shaft; a second parallel shaft; a first planetary gear set including a first element selectively connected to the first shaft, a second element selectively connected to the first shaft and/or a transmission housing, and a third output element; a second planetary gear set including a fourth element connected to the second element, a fifth element connected to the third element and directly connected to an output gear, and a sixth element selectively connected to the first shaft through two paths; four transfer gears connecting the fourth and fifth elements respectively to the second and third elements, and connecting the sixth element to the first shaft through two paths; and frictional elements selectively connecting the first, second, and sixth elements to the first shaft, and a brake selectively connecting the second element to the transmission housing. | 05-29-2014 |