Patent application number | Description | Published |
20090124449 | GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE - A gear train of an automatic transmission for a vehicle according to an exemplary embodiment of the present invention includes a first planetary gear set, a second planetary gear set composed of two simple planetary gear sets, three clutches, and two brakes, and thus the gear train of an automatic transmission may realize six forward speeds and one reverse speed. | 05-14-2009 |
20090156352 | POWER TRAIN OF AN AUTOMATIC TRANSMISSION FOR VEHICLES - An eight-speed power train of a vehicle automatic transmission includes one simple double pinion planetary gear set, one compound planetary gear set, four clutches, and two brakes. The compound planetary gear set includes a simple single pinion planetary gear set, and a double pinion planetary gear set. | 06-18-2009 |
20090247351 | GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLE - A gear train of an automatic transmission for a vehicle may include four planetary gear sets with three clutches and two brakes and realizes eight forward speeds, and the gear train of an automatic transmission for a vehicle may minimize the number of friction elements, simplify the scheme of an transmission, and enhance transmitting power efficiency and fuel efficiency. The four planetary gear sets may include a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear, a second planetary gear set including a second sun gear, a second planet carrier, and a second ring gear, a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear, and a fourth planetary gear set including a fourth sun gear, a fourth planet carrier, and a fourth ring gear. | 10-01-2009 |
20090280947 | GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A gear train of an automatic transmission for vehicles has the advantages of improving power delivery performance and reducing fuel consumption as a consequence of realizing more than eight forward speeds by combining four planetary gear sets with three clutches and three brakes. | 11-12-2009 |
20100222176 | POWER TRAIN OF AUTOMATIC TRANSMISSION - A power train of an automatic transmission with eight forward speeds and two reverse speeds includes: a speed reduction unit including a first variable input member connected to an input shaft via a first clutch, first and second variably stopped members connected to a transmission case, and a reduced speed output member; an output unit including a reduced speed input member connected to the reduced speed output member, second and third variable input members connected to the input shaft via second and third clutches, respectively, a third variably stopped member connected to the transmission case, and a shifted speed output member connected to an output gear. A first brake variably stops the third variable stopped member; a second brake variably stops the first variable stopped member; and a third brake variably stops the second variable stopped member. | 09-02-2010 |
20100227731 | POWER TRAIN OF AUTOMATIC TRANSMISSION - A power train of an automatic transmission with eight forward speeds and two reverse speeds includes: a speed reduction unit including a first variable input member connected to an input shaft via a first clutch, first and second variably stopped members connected to a transmission case, and a reduced speed output member; an output unit including a reduced speed input member connected to the reduced speed output member, second and third variable input members connected to the input shaft via second and third clutches, respectively, a third variably stopped member connected to the transmission case, and a shifted speed output member connected to an output gear. A first brake variably stops the third variable stopped member; a second brake variably stops the first variable stopped member; and a third brake variably stops the second variable stopped member. | 09-09-2010 |
20120122625 | GEAR TRAIN OF AUTOMATIC TRANSMISSION FOR VEHICLES - A gear train of an automatic transmission for vehicles has the advantages of simplifying structures of the automatic transmission and improving power delivery performance and fuel economy as a consequence of realizing at least nine forward speeds and one reverse speed by combining three simple planetary gear sets with four clutches and three brakes. | 05-17-2012 |
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 |
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 |