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US 2013/0157797 A1Published application
Automatic transmission gear and clutch arrangement
AssigneeGM Global Technology Operations LLC
InventorsJohn A. Diemer, Douglas John Dwenger
Life of this patent
Estimating the term…
Abstract
A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from a hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission housing, input member and other coupling members.
Claims37
A multi-speed transmission comprising:
- a transmission housing having a front portion, a center portion, and a rear portion, the front portion including a portion of each of a first, second, and third apply fluid passages and a first dam fluid passage, the center portion including a fourth apply fluid passage, and the central and rear portion including a fifth apply fluid passage and a second dam fluid passage;
- and
- a first, a second, a third, and a fourth planetary gear sets each having a first, a second, and a third members;
- a plurality of torque-transmitting mechanisms each having an actuating assembly and a clutch pack for selectively interconnecting one of the first, second, and third members of one of the planetary gear sets with another one of the first members, second members, third members of another of the planetary gear sets, and the transmission housing;
- a plurality of interconnecting members each continuously interconnecting one of the first, second, and third members of one of the planetary gear sets with another one of the first members, second members, third members of another of the planetary gear sets;
- an input member continuously interconnected to the second member of the second planetary gear set and rotatably supporting the actuating assembly of a first of the plurality of torque transmitting mechanisms, the input member having a plurality of axial bores, a plurality of radial bores, a plurality of chamber ports, a plurality of side ports, and an end port, wherein a first of the plurality of radial bores and a first of the plurality of chamber ports includes a portion of the first apply fluid passage, a first of the plurality of axial bores and a first and second of the plurality of side ports include a portion of the second apply fluid passage, a second of the plurality of axial bores and a third and fourth of the plurality of side ports include a portion of the second apply fluid passage, and a third of the plurality of axial bores, a second of the plurality of radial bores, a fifth and sixth of the plurality of side ports, and the end port include a portion of the first dam fluid passage;
- an intermediate rotating member rotatably supporting the actuating assemblies of a second and third of the plurality of torque transmitting mechanisms, the intermediate rotating member having a center bore, a plurality of radial bores and a plurality of ports, wherein a first of the plurality of radial bores and a first of the plurality of ports include a portion of the second apply fluid passage, a second of the plurality of radial bores and a second of the plurality of ports include a portion of the third fluid apply passage, and a third and fourth of a plurality of radial bores, a third and fourth of a plurality of ports, and the central bore include a portion of the first dam fluid passage;
- and
- an output member continuously interconnected to the second member of the fourth planetary gear set;
- and
- wherein the first apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the first of the plurality of torque transmitting mechanisms, the second apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the second of the plurality of torque transmitting mechanisms, the third apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the third of a plurality of torque transmitting mechanisms, the fourth apply fluid passage is in communication with the actuating assembly of a fourth of the plurality of the torque transmitting mechanisms, and the fifth apply fluid passage and the second dam fluid passage are in communication with the actuating assembly of a fifth of the plurality of torque transmitting mechanisms.
8 more elements
A multi-speed transmission comprising:
- a transmission housing having a front portion, a center portion, and a rear portion, the front portion including a portion of each of a first, second, and third apply fluid passages and a first dam fluid passage, the center portion including a fourth apply fluid passage, and the central and rear portion including a fifth apply fluid passage and a second dam fluid passage;
- and
- a first, a second, a third, and a fourth planetary gear sets each having a first, a second, and a third members;
- a plurality of torque-transmitting mechanisms each having an actuating assembly and a clutch pack for selectively interconnecting one of the first, second, and third members of one of the planetary gear sets with another one of the first members, second members, third members of another of the planetary gear sets, and the transmission housing;
- an input member continuously interconnected to the second member of the second planetary gear set and rotatably supporting the actuating assembly of a first of the plurality of torque transmitting mechanisms, the input member having a plurality of axial bores, a plurality of radial bores, a plurality of chamber ports, a plurality of side ports, and an end port, wherein a first of the plurality of radial bores and a first of the plurality of chamber ports includes a portion of the first apply fluid passage, a first of the plurality of axial bores and a first and second of the plurality of side ports include a portion of the second apply fluid passage, a second of the plurality of axial bores and a third and fourth of the plurality of side ports include a portion of the second apply fluid passage, and a third of the plurality of axial bores, a second of the plurality of radial bores, a fifth and sixth of the plurality of side ports, and the end port include a portion of the first dam fluid passage;
- an intermediate rotating member rotatably supporting the actuating assemblies of a second and third of the plurality of torque transmitting mechanisms, the intermediate rotating member having a center bore, a plurality of radial bores and a plurality of ports, wherein a first of the plurality of radial bores and a first of the plurality of ports include a portion of the second apply fluid passage, a second of the plurality of radial bores and a second of the plurality of ports include a portion of the third fluid apply passage, and a third and fourth of a plurality of radial bores, a third and fourth of a plurality of ports, and the central bore include a portion of the first dam fluid passage;
- a first interconnecting member continuously interconnecting the first member of the first planetary gear set and the third member of the second planetary gear set;
- a second interconnecting member continuously interconnecting the second member of the first planetary gear set with the second member of the fourth planetary gear set;
- a third interconnecting member continuously interconnecting the first member of the second planetary gear set and the first member of the third planetary gear set;
- a fourth interconnecting member continuously interconnecting the second member of the third planetary gear set with the third member of the fourth planetary gear set;
- and
- an output member continuously interconnected to the second member of the fourth planetary gear set;
- and
- wherein the first apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the first of the plurality of torque transmitting mechanisms, the second apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the second of the plurality of torque transmitting mechanisms, the third apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the third of a plurality of torque transmitting mechanisms, the fourth apply fluid passage is in communication with the actuating assembly of a fourth of the plurality of the torque transmitting mechanisms, and the fifth apply fluid passage and the second dam fluid passage are in communication with the actuating assembly of a fifth of the plurality of torque transmitting mechanisms.
11 more elements
A multi-speed transmission comprising:
- a transmission housing having a front portion, a center portion, and a rear portion, the front portion including a portion of each of a first, second, and third apply fluid passages and a first dam fluid passage, the center portion including a fourth apply fluid passage, and the central and rear portion including a fifth apply fluid passage and a second dam fluid passage;
- an input member;
- an intermediate rotating member;
- a first, a second, a third, and a fourth planetary gear sets each having a sun gear, a ring gear, and a carrier member;
- a first interconnecting member continuously interconnecting the sun gearof the first planetary gear set and the carrier member of the second planetary gear set;
- a second interconnecting member continuously interconnecting the ring gear of the first planetary gear set with the ring gear of the fourth planetary gear set;
- a third interconnecting member continuously interconnecting the sun gear of the second planetary gear set and the sun gear of the third planetary gear set;
- a fourth interconnecting member continuously interconnecting the ring gear of the third planetary gear set with the carrier member of the fourth planetary gear set;
- a first torque-transmitting mechanism having an actuating assembly and a clutch pack, the first torque-transmitting mechanism selectively engageable to interconnect the input member with the intermediate rotating member
- a second torque-transmitting mechanism having an actuating assembly and a clutch pack, the second torque-transmitting mechanism selectively engageable to interconnect the intermediate rotating member with the first interconnecting member;
- a third torque-transmitting mechanism having an actuating assembly and a clutch pack, the third torque-transmitting mechanism selectively engageable to interconnect the intermediate rotating member with the carrier member of the first planetary gear set;
- a fourth torque-transmitting mechanism having an actuating assembly and a clutch pack, the fourth torque-transmitting mechanism selectively engageable to interconnect the third interconnecting member with the transmission housing;
- and
- a fifth torque-transmitting mechanism having an actuating assembly and a clutch pack, the fifth torque-transmitting mechanism is selectively engageable to interconnect the carrier member of the third planetary gear set with the transmission housing;
- and
- wherein the input member is continuously interconnected to the ring gear of the second planetary gear set and rotatably supporting the actuating assembly of a first of the plurality of torque transmitting mechanisms, the input member having a plurality of axial bores, a plurality of radial bores, a plurality of chamber ports, a plurality of side ports, and an end port, wherein a first of the plurality of radial bores and a first of the plurality of chamber ports includes a portion of the first apply fluid passage, a first of the plurality of axial bores and a first and second of the plurality of side ports include a portion of the second apply fluid passage, a second of the plurality of axial bores and a third and fourth of the plurality of side ports include a portion of the second apply fluid passage, and a third of the plurality of axial bores, a second of the plurality of radial bores, a fifth and sixth of the plurality of side ports, and the end port include a portion of the first dam fluid passage;
- wherein the intermediate rotating member rotatably supporting the actuating assemblies of a second and third of the plurality of torque transmitting mechanisms, the intermediate rotating member having a center bore, a plurality of radial bores and a plurality of ports, wherein a first of the plurality of radial bores and a first of the plurality of ports include a portion of the second apply fluid passage, a second of the plurality of radial bores and a second of the plurality of ports include a portion of the third fluid apply passage, and a third and fourth of a plurality of radial bores, a third and fourth of a plurality of ports, and the central bore include a portion of the first dam fluid passage;
- and
- wherein the first apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the first torque transmitting mechanism, the second apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the second torque transmitting mechanism, the third apply fluid passage and the first dam fluid passage are in communication with the actuating assembly of the third torque transmitting mechanism, the fourth apply fluid passage is in communication with the actuating assembly of the fourth torque transmitting mechanism, and the fifth apply fluid passage and the second dam fluid passage are in communication with the actuating assembly of the fifth torque transmitting mechanism.
16 more elements
Dependencies are inferred from the claim text.