Patent
Multiple speed overdrive transmission for a motor vehicle
TLDR
In this paper, a multiple speed transmission for motor vehicles includes three simple planetary gearsets, and hydraulically actuated friction clutches and brakes for controlling operation of the gearsets and altering the torque delivery path between an input shaft and an output shaft.Abstract:
A multiple speed transmission for motor vehicles includes three simple planetary gearsets, and hydraulically actuated friction clutches and brakes for controlling operation of the gearsets and altering the torque delivery path between an input shaft and an output shaft. A friction brake is provided for operation in reverse drive to share the torque reaction with another friction brake. The transmission is suited to produce six or seven forward speed ratios and a reverse drive ratio.read more
Citations
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Patent
Multi-speed transmission
Scott H. Wittkopp,James M. Hart +1 more
TL;DR: A multi-speed transmission has three planetary gear sets and six torque-transmitting mechanism packaged in various ones of five zones within a transmission cavity as discussed by the authors, each planetary gear set has a ring gear member, a sun gear member and a carrier member that rotatably supports a plurality of pinion gears that intermesh with both the sun gear members and the ring gear members.
Patent
Multi-speed power transmission
TL;DR: In this article, a power transmission has a planetary gear arrangement that includes three planetary gear sets, one dedicated gear set is a reaction member (reaction member is continuously connected to a stationary member and another (input member) is continually connected with an input drive member.
Patent
9-Speed Transmission
TL;DR: In this paper, the authors present a transmission with a plurality of members that can be utilized in powertrains to provide nine forward speed ratios and one reverse speed ratio, and the transmission includes four planetary gear sets, six torque-transmitting devices, and four fixed interconnections.
Patent
Multi step transmission
TL;DR: In this article, a multi-step transmission of a planetary design is described, which includes a transmission input shaft and a transmission output shaft, and at least six shift elements, including first and second brakes and first, second, third, fourth, fifth, sixth, seventh and eighth shafts.
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Patent
Speed change gear system
TL;DR: In this paper, a speed change gear system for providing at least four forward drive speed ranges and one reverse drive speed range includes planetary gear sets of the single-pinion type and simple planetary gear set of the double-pinions type as well as a plurality of clutches and brakes.
Patent
Gear train arrangements
TL;DR: In this paper, the gear train arrangements for transmitting a power from a driving source to a driven member at more than three speeds in one direction and another speed in the opposite direction are presented.
Patent
Automatic planetary gear transmission
Toshiyuki Asada,Suzuki Toshitake,Yasunori Nakawaki,Yasuhiko Higashiyama,Akiharu Abe,Naoki Moriguchi +5 more
TL;DR: In this article, a planetary gear device having a first and a second singlepinion planetary gear unit (1, 2) and a third double-pinion unit (3), which are coaxially disposed so as to provide different speed reduction ratios, is presented.
Patent
Multiple speed automatic transmission for automotive vehicles
TL;DR: In this paper, a multiple speed ratio automatic transmission consisting of a first gearset (36), a second gear set (30), first and second gear units (44,54), each gear unit having a sun gear (46,56) ring gear (48,58) planet pinions (52,62) meshing with the sun gear and ring gear, and carrier (50,60) rotatably supporting the planet pinion, the sun gears (46) of the first gear unit, carrier (60), and the second gear unit's output shaft mutually drive
Patent
Lubricating system for automatic transmission
TL;DR: In this paper, a first lubricating circuit which usually supplies lubricant to planetary gear sets, bearings and the like, and a second lubricant circuit which supplies lubricants to friction elements during a shift.