# US 2013/0157797 A1 · Automatic transmission gear and clutch arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0157797 A1 - Document ID: US20130157797A1 - Status: Published application - Kind: A1 - Application number: 13/325,886 - Filed: 2011-12-14 - Published: 2013-06-20 - Earliest claimed: 2011-12-14 - Assignees: GM Global Technology Operations LLC - Inventors: John A. Diemer; Douglas John Dwenger - Web page: https://patentgrep.com/patent/US20130157797A1 ## CPC - F16H 3/66: composed of a number of gear trains without drive passing from one train to another - F16H 63/3026: {comprising friction clutches or brakes (band brake actuating mechanisms F16H63/3003)} - F16H 2057/087: {Arrangement and support of friction devices in planetary gearings, e.g. support of clutch drums, stacked arrangements of friction devices} - F16H 2061/0046: {Details of fluid supply channels, e.g. within shafts, for supplying friction devices or transmission actuators with control fluid} - F16H 2200/006: the gear ratios comprising eight forward speeds - F16H 2200/2012: with four sets of orbital gears - F16H 2200/2043: with five engaging means - F16H: GEARING ## 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. ## Claims ### Claim 1 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. ### Claim 2 (depends on 1) The multi-speed transmission of claim 1 wherein a first of the plurality of the interconnecting members continuously interconnecting the first member of the first planetary gear set and the third member of the second planetary gear set, a second of the plurality of the interconnecting members continuously interconnecting the second member of the first planetary gear set with the second member of the fourth planetary gear set, a third of the plurality of the interconnecting members continuously interconnecting the first member of the second planetary gear set and the first member of the third planetary gear set, a fourth of the plurality of the interconnecting members continuously interconnecting the second member of the third planetary gear set with the third member of the fourth planetary gear set, and the intermediate member is continuously interconnected with the first member of the fourth planetary gear set. ### Claim 3 (depends on 2) The multi-speed transmission of claim 2 wherein the first of the plurality of torque-transmitting mechanisms is selectively engageable to interconnect the input member with the intermediate member. ### Claim 4 (depends on 3) The multi-speed transmission of claim 3 wherein the second of the plurality of torque-transmitting mechanisms is selectively engageable to interconnect the intermediate member with the first of the plurality of interconnecting members. ### Claim 5 (depends on 4) The multi-speed transmission of claim 4 wherein the third of the plurality of torque-transmitting mechanisms is selectively engageable to interconnect the intermediate member with the third member of the first planetary gear set. ### Claim 6 (depends on 5) The multi-speed transmission of claim 5 wherein a fourth of the plurality of torque-transmitting mechanisms is selectively engageable to interconnect a third of the plurality of interconnecting members with the transmission housing. ### Claim 7 (depends on 6) The multi-speed transmission of claim 6 wherein a fifth of the plurality of torque-transmitting mechanisms is selectively engageable to interconnect the third member of the third planetary gear set with the transmission housing. ### Claim 8 (depends on 1) The multi-speed transmission of claim 1 wherein the torque-transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member. ### Claim 9 (depends on 1) The multi-speed transmission of claim 1 wherein the first apply fluid passage includes a first apply passage and a first side port of the front portion of the transmission housing and the first of the plurality of radial bores and the first of a plurality of chamber ports of the input member, and wherein the first apply fluid passage is in communication with the first of the plurality of radial bores through the first side port and the first of the plurality of radial bores is in communication with an apply chamber of the actuating assembly of the first of the plurality of torque transmitting mechanisms through first chamber port of the input member. ### Claim 10 (depends on 9) The multi-speed transmission of claim 9 wherein the second apply fluid passage includes a second apply passage of the front portion of the transmission housing, a first of the plurality of axial bores and a first and second of the plurality of side ports of the input member, and a first of the plurality of the radial bores and a first of the plurality of chamber ports of the intermediate rotating member, and wherein the second apply fluid passage is in communication with the first of the plurality of axial bores through the first side port and a first annular channel formed between the input member and the transmission housing, the first of the plurality of radial bores is in communication with the first of the plurality of axial bores through the second of the plurality of side ports and a second annular channel formed between the input member and the intermediate rotating member, and the first of the plurality of radial bores is in communication with the apply chamber of the second of the plurality of torque transmitting mechanisms through the first chamber port of the intermediate rotating member. ### Claim 11 (depends on 10) The multi-speed transmission of claim 10 wherein the third apply fluid passage includes a third apply passage of the front portion of the transmission housing, a second of the plurality of axial bores and a third and fourth of the plurality of side ports of the input member, and a second of the plurality of the radial bores and a second of the plurality of chamber ports of the intermediate rotating member, and wherein the third apply passage is in communication with the second of the plurality of axial bores through the third of the plurality of side port of the input member and a third annular channel formed between the input member and the transmission housing, the second of the plurality of radial bores is in communication with the second of the plurality of axial bores through the fourth of the plurality of side ports of the input member and a fourth annular channel formed between the input member and the intermediate rotating member, and the second of the plurality of radial bores is in communication with the apply chamber of the third of the plurality of torque transmitting mechanisms through the second of the plurality of chamber ports of the intermediate rotating member. ### Claim 12 (depends on 11) The multi-speed transmission of claim 11 wherein the first dam fluid passage includes a first dam passage of the front portion of the transmission housing, a second radial bore, a third of the plurality of axial bores, a fifth and sixth of the plurality of side ports, and an end port of the input member, and a central bore, a side port, and a third and fourth of the plurality of the radial bores of the intermediate rotating member, wherein the first dam passage is in communication with the dam chamber of the first of the plurality of torque transmitting mechanisms through the second radial bore and the second chamber port of the input member and a second side port of the transmission housing, the first dam passage is in communication with the third of the plurality of axial bores of the input member through an open end of the first dam passage, a fifth annular channel formed between the transmission housing and the input member, and the fifth of the plurality of side ports of the input member, the third radial bore of the intermediate rotating member is in communication with the third axial bore of the input member through a sixth of the plurality of side ports, a radial passage formed through a bearing between the input member and the intermediate rotating member, and the third radial bore is in communication with the dam chamber of the second of the plurality of torque transmitting mechanisms through a fourth chamber port of the seventh interconnecting member, the fourth radial bore of the intermediate rotating member is in communication with the third axial bore of the input member through the side port and the central bore of the intermediate rotating member and the end port of the input member, and the fourth radial bore is in communication with the dam chamber of the third of the plurality of torque transmitting mechanisms through a fifth chamber port of the intermediate rotating member. ### Claim 13 (depends on 12) The multi-speed transmission of claim 12 wherein the fourth apply fluid passage is in communication with the apply chamber of the fourth of the plurality of torque transmitting mechanisms through a chamber port of the transmission housing. ### Claim 14 (depends on 13) The multi-speed transmission of claim 13 wherein the fifth apply fluid passage is in communication with the apply chamber of the fifth of the plurality of torque transmitting mechanisms through a second chamber port of the transmission housing and the second dam fluid passage is in communication with the dam chamber of the fifth of the plurality of torque transmitting mechanisms through a third chamber port of the transmission housing. ### Claim 15 (depends on 14) The multi-speed transmission of claim 14 wherein the first members of the planetary gear sets are sun gears, the second members of the planetary gear sets are ring gears, and the third members of the planetary gear sets are carrier members. ### Claim 16 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. ### Claim 17 (depends on 16) The multi-speed transmission of claim 16 wherein the first of the five torque-transmitting mechanisms is selectively engageable to interconnect the input member with the intermediate rotating member. ### Claim 18 (depends on 17) The multi-speed transmission of claim 17 wherein the second of the five torque-transmitting mechanisms is selectively engageable to interconnect the intermediate rotating member with first interconnecting member. ### Claim 19 (depends on 18) The multi-speed transmission of claim 18 wherein the third of the five torque-transmitting mechanisms is selectively engageable to interconnect the intermediate rotating member with the third member of the first planetary gear set. ### Claim 20 (depends on 19) The multi-speed transmission of claim 19 wherein the fourth of the five torque-transmitting mechanisms is selectively engageable to interconnect the third interconnecting member with the transmission housing. ### Claim 21 (depends on 20) The multi-speed transmission of claim 20 wherein the fifth of the five torque-transmitting mechanisms is selectively engageable to interconnect the third member of the third planetary gear set with the transmission housing. ### Claim 22 (depends on 21) The multi-speed transmission of claim 21 wherein the first members of the planetary gear sets are sun gears, the second members of the planetary gear sets are ring gears, and the third members of the planetary gear sets are carrier members. ### Claim 23 (depends on 16) The multi-speed transmission of claim 16 wherein the torque-transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member. ### Claim 24 (depends on 16) The multi-speed transmission of claim 16 wherein the first apply fluid passage includes a first apply passage and a first side port of the front portion of the transmission housing and the first of the plurality of radial bores and the first of a plurality of chamber ports of the input member, and wherein the first apply fluid passage is in communication with the first of the plurality of radial bores through the first side port and the first of the plurality of radial bores is in communication with an apply chamber of the actuating assembly of the first of the plurality of torque transmitting mechanisms through first chamber port of the input member. ### Claim 25 (depends on 24) The multi-speed transmission of claim 24 wherein the second apply fluid passage includes a second apply passage of the front portion of the transmission housing, a first of the plurality of axial bores and a first and second of the plurality of side ports of the input member, and a first of the plurality of the radial bores and a first of the plurality of chamber ports of the intermediate rotating member, and wherein the second apply fluid passage is in communication with the first of the plurality of axial bores through the first side port and a first annular channel formed between the input member and the transmission housing, the first of the plurality of radial bores is in communication with the first of the plurality of axial bores through the second of the plurality of side ports and a second annular channel formed between the input member and the intermediate rotating member, and the first of the plurality of radial bores is in communication with the apply chamber of the second of the plurality of torque transmitting mechanisms through the first chamber port of the intermediate rotating member. ### Claim 26 (depends on 25) The multi-speed transmission of claim 25 wherein the third apply fluid passage includes a third apply passage of the front portion of the transmission housing, a second of the plurality of axial bores and a third and fourth of the plurality of side ports of the input member, and a second of the plurality of the radial bores and a second of the plurality of chamber ports of the intermediate rotating member, and wherein the third apply passage is in communication with the second of the plurality of axial bores through the third of the plurality of side port of the input member and a third annular channel formed between the input member and the transmission housing, the second of the plurality of radial bores is in communication with the second of the plurality of axial bores through the fourth of the plurality of side ports of the input member and a fourth annular channel formed between the input member and the intermediate rotating member, and the second of the plurality of radial bores is in communication with the apply chamber of the third of the plurality of torque transmitting mechanisms through the second of the plurality of chamber ports of the intermediate rotating member. ### Claim 27 (depends on 26) The multi-speed transmission of claim 26 wherein the first dam fluid passage includes a first dam passage of the front portion of the transmission housing, a second radial bore, a third of the plurality of axial bores, a fifth and sixth of the plurality of side ports, and an end port of the input member, and a central bore, a side port, and a third and fourth of the plurality of the radial bores of the intermediate rotating member, wherein the first dam passage is in communication with the dam chamber of the first of the plurality of torque transmitting mechanisms through the second radial bore and the second chamber port of the input member and a second side port of the transmission housing, the first dam passage is in communication with the third of the plurality of axial bores of the input member through an open end of the first dam passage, a fifth annular channel formed between the transmission housing and the input member, and the fifth of the plurality of side ports of the input member, the third radial bore of the intermediate rotating member is in communication with the third axial bore of the input member through a sixth of the plurality of side ports, a radial passage formed through a bearing between the input member and the intermediate rotating member, and the third radial bore is in communication with the dam chamber of the second of the plurality of torque transmitting mechanisms through a fourth chamber port of the seventh interconnecting member, the fourth radial bore of the intermediate rotating member is in communication with the third axial bore of the input member through the side port and the central bore of the intermediate rotating member and the end port of the input member, and the fourth radial bore is in communication with the dam chamber of the third of the plurality of torque transmitting mechanisms through a fifth chamber port of the intermediate rotating member. ### Claim 28 (depends on 27) The multi-speed transmission of claim 27 wherein the fourth apply fluid passage is in communication with the apply chamber of the fourth of the plurality of torque transmitting mechanisms through a chamber port of the transmission housing. ### Claim 29 (depends on 28) The multi-speed transmission of claim 28 wherein the fifth apply fluid passage is in communication with the apply chamber of the fifth of the plurality of torque transmitting mechanisms through a second chamber port of the transmission housing and the second dam fluid passage is in communication with the dam chamber of the fifth of the plurality of torque transmitting mechanisms through a third chamber port of the transmission housing. ### Claim 30 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. ### Claim 31 (depends on 30) The multi-speed transmission of claim 30 wherein the torque-transmitting mechanisms are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio between the input member and the output member. ### Claim 32 (depends on 31) The multi-speed transmission of claim 31 wherein the first apply fluid passage includes a first apply passage and a first side port of the front portion of the transmission housing and the first of the plurality of radial bores and the first of a plurality of chamber ports of the input member, and wherein the first apply fluid passage is in communication with the first of the plurality of radial bores through the first side port and the first of the plurality of radial bores is in communication with an apply chamber of the actuating assembly of the first torque transmitting mechanism through first chamber port of the input member. ### Claim 33 (depends on 32) The multi-speed transmission of claim 32 wherein the second apply fluid passage includes a second apply passage of the front portion of the transmission housing, a first of the plurality of axial bores and a first and second of the plurality of side ports of the input member, and a first of the plurality of the radial bores and a first of the plurality of chamber ports of the intermediate rotating member, and wherein the second apply fluid passage is in communication with the first of the plurality of axial bores through the first side port and a first annular channel formed between the input member and the transmission housing, the first of the plurality of radial bores is in communication with the first of the plurality of axial bores through the second of the plurality of side ports and a second annular channel formed between the input member and the intermediate rotating member, and the first of the plurality of radial bores is in communication with the apply chamber of the second torque transmitting mechanism through the first chamber port of the intermediate rotating member. ### Claim 34 (depends on 33) The multi-speed transmission of claim 33 wherein the third apply fluid passage includes a third apply passage of the front portion of the transmission housing, a second of the plurality of axial bores and a third and fourth of the plurality of side ports of the input member, and a second of the plurality of the radial bores and a second of the plurality of chamber ports of the intermediate rotating member, and wherein the third apply passage is in communication with the second of the plurality of axial bores through the third of the plurality of side port of the input member and a third annular channel formed between the input member and the transmission housing, the second of the plurality of radial bores is in communication with the second of the plurality of axial bores through the fourth of the plurality of side ports of the input member and a fourth annular channel formed between the input member and the intermediate rotating member, and the second of the plurality of radial bores is in communication with the apply chamber of the third torque transmitting mechanism through the second of the plurality of chamber ports of the intermediate rotating member. ### Claim 35 (depends on 34) The multi-speed transmission of claim 34 wherein the first dam fluid passage includes a first dam passage of the front portion of the transmission housing, a second radial bore, a third of the plurality of axial bores, a fifth and sixth of the plurality of side ports, and an end port of the input member, and a central bore, a side port, and a third and fourth of the plurality of the radial bores of the intermediate rotating member, wherein the first dam passage is in communication with the dam chamber of the first torque transmitting mechanism through the second radial bore and the second chamber port of the input member and a second side port of the transmission housing, the first dam passage is in communication with the third of the plurality of axial bores of the input member through an open end of the first dam passage, a fifth annular channel formed between the transmission housing and the input member, and the fifth of the plurality of side ports of the input member, the third radial bore of the intermediate rotating member is in communication with the third axial bore of the input member through a sixth of the plurality of side ports, a radial passage formed through a bearing between the input member and the intermediate rotating member, and the third radial bore is in communication with the dam chamber of the second torque transmitting mechanism through a fourth chamber port of the seventh interconnecting member, the fourth radial bore of the intermediate rotating member is in communication with the third axial bore of the input member through the side port and the central bore of the intermediate rotating member and the end port of the input member, and the fourth radial bore is in communication with the dam chamber of the third torque transmitting mechanism through a fifth chamber port of the intermediate rotating member. ### Claim 36 (depends on 35) The multi-speed transmission of claim 35 wherein the fourth apply fluid passage is in communication with the apply chamber of the fourth torque transmitting mechanism through a chamber port of the transmission housing. ### Claim 37 (depends on 36) The multi-speed transmission of claim 36 wherein the fifth apply fluid passage is in communication with the apply chamber of the fifth torque transmitting mechanism through a second chamber port of the transmission housing and the second dam fluid passage is in communication with the dam chamber of the fifth torque transmitting mechanism through a third chamber port of the transmission housing.