Transmission Includes Three Relatively Rotatable Sun Gears Patents (Class 475/275)
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Publication number: 20110009226Abstract: An automatic transmission includes a first single-pinion planetary gear mechanism including a first sun gear, a first ring gear, and a first carrier that each correspond to one of first to third elements in a velocity diagram. The second element is connected to the input shaft. A second single-pinion planetary gear mechanism including a second sun gear, a second ring gear, and a second carrier that each correspond to one of fourth to sixth elements in a velocity diagram. The fourth element is connected to the first element to form a first connected body. A double-pinion third planetary gear mechanism includes a third sun gear, a third ring gear, and a third carrier that each correspond to one of seventh to ninth elements in a velocity diagram. The eighth element is connected to the fifth element to form a second connected body that is connected to the output member.Type: ApplicationFiled: July 2, 2010Publication date: January 13, 2011Applicant: HONDA MOTOR CO., LTD.Inventors: Kohei IIZUKA, Noriaki Saitoh, Soichi Sugino, Mirko Leesch, Joerg Mueller, Rico Resch
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Publication number: 20110009228Abstract: A multi-stage transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The carriers of gearsets (P1, P2) couple via shaft (4) which couples the sun gear of gearset (P3). The ring gear of the gearset (P1) couples the sun gear of gearset (P2) via shaft (8), which couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). The sun gear of gearset (P4) couples housing (G). Shaft (6) couples shaft (1) via clutch (16) and carrier of gearset (P3). Shaft (9) couples shaft (4) via clutch (49) and the ring gear of gearset (P4). Output shaft (2) couples the ring gear and the carrier respectively of gearsets (P3, P4).Type: ApplicationFiled: February 4, 2009Publication date: January 13, 2011Applicant: ZF FRIEDRICHSHAFEN AGInventors: Gert Bauknecht, Gerhard Gumpoltsberger, Peter Ziemer, Mark Mohr
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Patent number: 7867127Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: September 11, 2007Date of Patent: January 11, 2011Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Scott H. Wittkopp
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Patent number: 7867131Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices include clutches and a brake.Type: GrantFiled: April 14, 2008Date of Patent: January 11, 2011Assignee: GM Global Technology Operations LLCInventors: James M. Hart, Andrew W. Phillips, Scott H. Wittkopp, Clinton E. Carey
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Patent number: 7862463Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: September 11, 2007Date of Patent: January 4, 2011Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Scott H. Wittkopp
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Patent number: 7862465Abstract: An automatic transmission that includes two clutches that are provided in mutually different positions in a radial direction while overlapping each other in an axial direction. The two clutches each include a clutch drum; a piston that structures a operating oil chamber while using a part of the clutch drum as a cylinder; a plurality of friction plates that engage the clutch drum; and a cancel oil chamber that is disposed on a back face side of the piston and that cancels a centrifugal hydraulic pressure acting on the operating oil chamber.Type: GrantFiled: February 22, 2008Date of Patent: January 4, 2011Assignee: Aisin AW Co., Ltd.Inventors: Masaaki Nishida, Hiroshi Katou, Masashi Kitou, Kohei Iizuka
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Patent number: 7862464Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: September 11, 2007Date of Patent: January 4, 2011Assignee: GM Global Technology Operations, Inc.Inventors: Scott H. Wittkopp, James M. Hart
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Patent number: 7862466Abstract: 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. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing.Type: GrantFiled: June 29, 2010Date of Patent: January 4, 2011Assignee: GM Global Technology Operations, Inc.Inventors: Clinton E. Carey, James M. Hart, Scott H. Wittkopp, Andrew W. Phillips, Edwin T. Grochowski, Elizabeth I. Wooden
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Publication number: 20100331135Abstract: A gear train of an automatic transmission for vehicles has advantages of improving power delivery performance and reducing fuel consumption as a consequence of realizing eight forward speeds and one reverse speed by combining two simple planetary gear sets and one compound planetary gear set with two clutches and four brakes.Type: ApplicationFiled: November 9, 2009Publication date: December 30, 2010Applicant: HYUNDAI MOTOR COMPANYInventors: Wookjin JANG, Jinhyung Kong
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Publication number: 20100331136Abstract: A gear train of an automatic transmission for vehicles is provided to improve power delivery performance and reduce fuel consumption as a consequence of realizing eight forward speeds and two reverse speeds by combining two simple planetary gear sets and one compound planetary gear set with two clutches and four brakes.Type: ApplicationFiled: November 12, 2009Publication date: December 30, 2010Applicant: HYUNDAI MOTOR COMPANYInventors: Wookjin JANG, Ho Rim Yang
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Publication number: 20100331138Abstract: An eight, nine, eleven or thirteen speed automatic transmission has an input and output, four planetary gear assemblies, four connecting members for coupling certain elements of the planetary gear assemblies to other elements, four brakes for selectively connecting certain elements of the planetary gear assemblies to ground and three friction clutches for selectively connecting certain elements of the planetary gear assemblies to other elements. Sequenced operation of the brakes and clutches provides, eight, nine, eleven or thirteen forward speeds or gear ratios and reverse.Type: ApplicationFiled: January 11, 2010Publication date: December 30, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventor: Andrew W. Phillips
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Publication number: 20100331137Abstract: A transmission having input and output shafts, gearsets (RS1-RS4), shafts (1-8) and elements (A-E). Carriers of gearsets (RS4, RS3) are respectively connected to the input and the output forming shafts (1, 2). Sun gears of gearsets (RS1, RS4) are coupled forming shaft (3). The ring gear and a carrier respectively of gearsets (RS1, RS2) form shafts (4, 8). Ring gears of gearsets (RS2, RS4) respectively couple sun gears of gearsets (RS3, RS2) forming shafts (5, 7). A carrier of gearset (RS1) and a ring gear of gearset (RS3) are connected forming shaft (6). In the power flow, elements (A, B) are respectively arranged between shafts (3, 4) and a transmission housing, element (C) between shafts (5, 1), element (D) between shafts (8, 2) or (8, 6), and element (E) between two of shafts (5, 7, 8).Type: ApplicationFiled: September 8, 2010Publication date: December 30, 2010Applicant: ZF FRIEDRICHSHAFEN AGInventors: Michael KAMM, Gabor DIOSI, Josef HAUPT, Gerhard GUMPOLTSBERGER, Peter ZIEMER, Martin BREHMER
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Publication number: 20100323843Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches.Type: ApplicationFiled: August 30, 2010Publication date: December 23, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey
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Publication number: 20100323842Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices are clutches and a brake.Type: ApplicationFiled: August 30, 2010Publication date: December 23, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips, Clinton E. Carey
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Patent number: 7854677Abstract: A power train of an automatic transmission that realizes eight forward speeds and two reverse speeds by using two or three planetary gear sets, five clutches, and one brake, wherein a speed reduction unit generates a reduced rotational speed and an output unit receives a rotational speed of an input shaft and the reduced rotational speed and generates the eight forward speeds and the two reverse speeds.Type: GrantFiled: October 8, 2007Date of Patent: December 21, 2010Assignee: Hyundai Motor CompanyInventor: Hyun Seok Choi
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Publication number: 20100311535Abstract: The present invention relates to a power transmission apparatus using a planetary gear having a plurality of gear trains and methods of use thereof. The object of the present invention is to provide a power transmission apparatus and methods of use thereof using a planetary gear having a plurality of gear trains, wherein a ring gear set is included. The ring gear set includes ring gears which are respectively meshed with a planet gear set comprising a plurality of planet gears with different gear ratios. Various speed change ratios can be established through a sun gear by fixing a ring gear when the power is inputted through a carrier.Type: ApplicationFiled: February 12, 2009Publication date: December 9, 2010Inventor: Keun Soo Yun
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Publication number: 20100311536Abstract: An automatic transmission includes a first planetary gear set including first to third rotating elements; a second planetary gear set including fourth to sixth rotating elements; a third planetary gear set including seventh to sixth to ninth rotating elements; an input shaft constantly connected with the first rotating element; an output shaft constantly connected with the second rotating element; and at least five friction elements including a first friction element capable of locking a rotation of the eighth rotating element, a second friction element configured to selectively connect the second rotating element with the fifth rotating element, a third friction element configured to selectively connect the second rotating element with a second rotating member defined by the sixth and seventh rotating elements, a fourth friction element configured to selectively connect the fifth rotating element with the eighth rotating element, and a fifth friction element configured to selectively connect the first rotatiType: ApplicationFiled: November 14, 2008Publication date: December 9, 2010Inventors: Kazuaki Aota, Takashi Fujioka, Naoki Kobayashi, Kazuo Oguri, Takeo Hiramatsu
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Patent number: 7846057Abstract: 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.Type: GrantFiled: May 17, 2010Date of Patent: December 7, 2010Assignee: Hyundai Motor CompanyInventor: Hyu Tae Shim
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Publication number: 20100298086Abstract: Provided is an automatic transmission capable of reducing friction loss. The automatic transmission is provided with an input shaft (2) coupled with a sun gear (Sa), an output member (3), a first to third planetary gear mechanisms (4, 5, 6), a first engagement mechanism (C1) coupling the input shaft (2) with a ring gear (Rc) releasably, a second engagement mechanism (C2) coupling a carrier (Ca) with a carrier (Cc) releasably, a third engagement mechanism (C3) coupling the carrier (Ca) with a second coupling body (Rb-Sc) releasably, a fourth engagement mechanism (B1) fixing a first coupling body (Ra-Cb) to a transmission case (1) releasably, a fifth engagement mechanism (B2) fixing a sun gear (Sb) to the transmission case (1) releasably, and a sixth engagement mechanism (B3) fixing the ring gear (Rc) to the transmission case (1) releasably.Type: ApplicationFiled: April 30, 2010Publication date: November 25, 2010Applicant: HONDA MOTOR CO., LTD.Inventors: Kohei Iizuka, Noriaki Saitoh, Soichi Sugino, Jörg Müller, Rico Resch, Mirko Leesch
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Publication number: 20100298087Abstract: An output side transfer member 103 of a second clutch C-2 extends around the outer circumferences of the output side transfer members 101, 102 of the third and first clutches C-3, C-1, the output side transfer member 104 (or 13, 101) of a fourth clutch C-4 and the output side transfer member 101 of a third clutch C-3 are linked to a sun gear S2, the output side transfer member 104 (or 13, 101) of a fourth clutch C-4, an output side transfer member 101 of a third clutch C-3, and a sun gear S2, which rotate integrally, are disposed radially inward with respect to the output side transfer member 102 of the first clutch C-1. Thereby, it becomes possible to reduce the diameter of the output side transfer member 104 (or 13, 101) of the fourth clutch C-4, to reduce the weight and inertia, and to improve the controllability of the automatic transmission 1.Type: ApplicationFiled: July 7, 2010Publication date: November 25, 2010Applicant: AISIN AW CO., LTD.Inventors: Toshihiko AOKI, Minoru Todo, Kazuhisa Ozaki, Takuya Ishii, Satoshi Fukuyama, Tomochika Inagaki, Yousuke Andoh
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Patent number: 7833121Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing.Type: GrantFiled: July 22, 2008Date of Patent: November 16, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Clinton E. Carey, Scott H. Wittkopp, Andrew W. Phillips, James M. Hart
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Patent number: 7833122Abstract: A transmission is disclosed having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include five clutches and one brake arranged within a transmission housing.Type: GrantFiled: July 22, 2008Date of Patent: November 16, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey
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Patent number: 7828688Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide ten forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish ten forward speed ratios and one reverse speed ratio.Type: GrantFiled: July 9, 2007Date of Patent: November 9, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Andrew W. Phillips, Scott H. Wittkopp, James M. Hart, Clinton E. Carey
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Patent number: 7828096Abstract: The invention proposes a hybrid drive for a vehicle with a power train, which has a first electric machine (4), which is permanently connected to an input shaft (3) of the vehicle transmission (2) arranged between an internal combustion engine (1) and a vehicle transmission (2) with changeable gear ratio, and which can be operated as an engine or as a generator, and a hydraulic pump (5) for the vehicle transmission (2), in which at least one first shiftable clutch device (7) is arranged between the internal combustion engine (1) and the vehicle transmission (2), and in which the hydraulic pump (5) is torque-proof connected to the input shaft (3) of the vehicle transmission (2). A hybrid drive is also proposed, which comprises two electric machines, in which the hydraulic pump (5) is coupled via at least one element for force transfer to the input shaft (3) of the vehicle transmission (2).Type: GrantFiled: July 13, 2007Date of Patent: November 9, 2010Assignee: ZF Friedrichshafen AGInventors: Markus Hoher, Linus Eschenbeck
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Patent number: 7828689Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, a split sun gear, two fixed interconnections and a grounded member. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of two to establish eight forward speed ratios and one reverse speed ratio.Type: GrantFiled: August 24, 2007Date of Patent: November 9, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Andrew W. Phillips, Scott H. Wittkopp, James M. Hart, Clinton E. Carey, Madhusudan Raghavan
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Patent number: 7828687Abstract: An apparatus and method for a planetary gear assembly and drive is provided. The planetary gear assembly and drive has a space index of 60 and includes at least one planet gear with 15 teeth. The gear assembly and drive is capable of employing 1, 2, 3, 4, or 5 planet gears and if multiple planet gears are employed, they are equally spaced about the circumference of the sun gear. The planetary gear assembly and drive further achieves a low frequency of tooth reconnection.Type: GrantFiled: October 25, 2006Date of Patent: November 9, 2010Assignee: Remy Technologies, L.L.C.Inventors: Attila Nagy, Balazs Palfai
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Publication number: 20100279814Abstract: An automatic planetary transmission comprising a drive input shaft (AN), a drive output shaft (AB), first, second, third and fourth planetary gearsets (RS1, RS2, RS3, RS4) and six shifting elements (A, B, C, D, E, F). By the selectively engagement, in each case, three of the six shifting elements (A, B, C, D, E, F), ten forward gears and up to two reverse gears can be engaged without any range shifts.Type: ApplicationFiled: December 8, 2008Publication date: November 4, 2010Applicant: ZF FRIEDRICHSHAFEN AGInventors: Martin Brehmer, Gabor Diosi, Josef Haupt
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Patent number: 7824300Abstract: An automatic 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may be either brakes or clutches. Eight forward speeds or gear ratios and reverse are achieved by engaging various combinations of the brakes and clutches.Type: GrantFiled: January 4, 2008Date of Patent: November 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey
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Patent number: 7824298Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having six torque-transmitting mechanisms and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members, and with the transmission housing, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: October 23, 2007Date of Patent: November 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Andrew W. Phillips, Clinton E. Carey, Scott H. Wittkopp, Madhusudan Raghavan
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Patent number: 7824299Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.Type: GrantFiled: December 12, 2007Date of Patent: November 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Andrew W. Phillips, Madhusudan Raghavan
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Patent number: 7824301Abstract: A gear train in an automatic transmission for vehicles may include: a first planetary gear set outputting reduced and same rotational speeds through two pathways by using torque received from an input shaft through one input pathway; a second planetary gear set outputting reversed and same outputs by using the reduced rotational speed from the first planetary gear set, and outputting an increased input when the reduced and same rotational speeds are simultaneous inputted from the first planetary gear set; and a third planetary gear set outputting six forward speeds and one reverse speed by using the outputs from the second planetary gear set and torque from the input shaft.Type: GrantFiled: July 22, 2008Date of Patent: November 2, 2010Assignee: Hyundai Motor CompanyInventor: Woo Yeol Kim
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Patent number: 7824297Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing.Type: GrantFiled: July 19, 2007Date of Patent: November 2, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Clinton E. Carey, Andrew W. Phillips, Edwin T. Grochowski, Scott H. Wittkopp, James M. Hart
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Patent number: 7819772Abstract: A powershiftable multistage transmission (LMG) between an input shaft (an), which can be connected to a first transmission shaft (1), and an output shaft (ab=2) as a second transmission shaft, comprising two shaft-lines (WS1 and WS2) which are arranged in parallel in a transmission housing (0), three transfer gears (SG) between these shaft-lines, three planetary gears (PG) each with a sun gear (So), a ring gear (Ho) and a planet-carrier (Pt) with single planets, and a plurality, preferably five, shifting elements (SE). With only five shifting elements eight forward gears and one reverse gear can be switched. The six gear elements have ratios which can be designed easily even if the total ratio range is somewhere between 7<?ges<9. Due to the distribution of the gear elements on two shaft-lines, the transmission gearbox has a short length and is suitable for front-cross-applications as well as inline-applications. All shifting elements can be easily fed with oil to control them.Type: GrantFiled: September 23, 2009Date of Patent: October 26, 2010Assignee: EGS Entwicklungsgesellschaft fuer Getriebesysteme mbHInventor: Peter Tenberge
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Patent number: 7815541Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of interconnecting members and a plurality of torque transmitting devices. Each of the planetary gear sets includes first, second and third members. A first interconnecting member continuously interconnects the third member of the first planetary gear set with the third member of the third planetary gear set. A second interconnecting member continuously interconnects the second member of the first planetary gear set with the third member of the second planetary gear set. A third interconnecting member continuously interconnects the first member of the second planetary gear set with the first member of the third planetary gear set. A fourth interconnecting member continuously interconnects the second member of the third planetary gear set with a third member of the fourth planetary gear set. The torque transmitting devices may include clutches and brakes.Type: GrantFiled: August 1, 2007Date of Patent: October 19, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Andrew W. Phillips, Scott H. Wittkopp, James M. Hart, Clinton E. Carey, Madhusudan Raghavan
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Patent number: 7811197Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets having five torque-transmitting mechanisms, two fixed interconnections and two grounded members. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The five torque-transmitting mechanisms provide interconnections between various gear members, and are operated in combinations of three to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: October 11, 2007Date of Patent: October 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Madhusudan Raghavan
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Patent number: 7811196Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having six torque-transmitting devices and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and with the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.Type: GrantFiled: October 11, 2007Date of Patent: October 12, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey, Madhusudan Raghavan
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Publication number: 20100248891Abstract: The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, one fixed interconnection, three external gear sets and a final drive gear set. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with one of the external gear sets. The five torque-transmitting devices provide interconnections between various planetary and external gear members, the input shaft, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.Type: ApplicationFiled: March 27, 2009Publication date: September 30, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, James M. Hart, James B. Borgerson
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Publication number: 20100248890Abstract: A multiple speed power transmission comprising: four epicylic gearing assemblies each having first, second, and third rotating elements with specified interconnections, an input shaft, an output shaft, three clutches, and two brakes. Clutches and brakes are applied in combinations of three to produce eight forward ratios and one reverse ratio.Type: ApplicationFiled: March 30, 2009Publication date: September 30, 2010Inventor: Reid Alan Baldwin
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Publication number: 20100248889Abstract: The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, three external gear sets and a final drive gear set. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with one of the external gear sets. The five torque-transmitting devices provide interconnections between various planetary and external gear members, the input shaft, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.Type: ApplicationFiled: March 25, 2009Publication date: September 30, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, James M. Hart, James B. Borgerson
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Publication number: 20100248882Abstract: The hybrid transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The hybrid transmission includes a motor/generator, three planetary gear sets, five torque-transmitting devices, three external gear sets and a final drive gear set. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with the final drive gear set. The five torque-transmitting devices provide interconnections between various planetary and external gear members, the input shaft, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.Type: ApplicationFiled: March 25, 2009Publication date: September 30, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, James M. Hart, James B. Borgerson
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Patent number: 7803082Abstract: A transmission including an input and output shafts, gearsets (RS1-RS4), shafts (1-8) and elements (A-E). Carriers respectively of gearsets (RS4, RS3) and the input and output shafts respectively form shafts (1, 2), sun gears of gearsets (RS1, RS4) form shaft (3). A ring gear and carrier respectively of gearsets (RS1, RS2) form shafts (4, 8). A ring and sun gear respectively of gearsets (RS2, RS3) form shaft (5), a carrier a ring gear respectively of gearsets (RS1, RS3) form shaft (6), a sun gear of gearset (RS2) and a ring gear of gearset (RS4) form shaft (7). In the power flow, elements (A, B) are respectively between shafts (3, 4) and the housing; element (C) between shafts (5, 1), element (D) between shafts (8, 2) or (8, 6); element (E) between two of shafts (5, 7, 8). Gearsets (RS2, RS4) are axially and radially aligned between gearsets (RS1, RS3).Type: GrantFiled: March 15, 2006Date of Patent: September 28, 2010Assignee: ZF Friedrichshafen AGInventors: Gabor Diosi, Josef Haupt, Peter Ziemer, Martin Brehmer
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Patent number: 7803083Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.Type: GrantFiled: January 4, 2008Date of Patent: September 28, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Clinton E. Carey, James M. Hart, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 7798933Abstract: A motor vehicle transmission device which, in order to form a plurality of gears, forms a Lepelletier transmission. At least one torsional damper is provided in the Lepelletier transmission, and also to a motor vehicle drive train, which has a Lepelletier motor vehicle transmission device.Type: GrantFiled: April 20, 2009Date of Patent: September 21, 2010Assignee: Luk Lamellen und Kupplungsbau Beteiligungs KGInventors: Thorsten Krause, Jan Loxtermann
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Patent number: 7794351Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.Type: GrantFiled: January 4, 2008Date of Patent: September 14, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips, Clinton E. Carey
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Patent number: 7794352Abstract: 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. Each of the planetary gear sets includes first, second and third members. The torque transmitting devices may include clutches and brakes.Type: GrantFiled: January 4, 2008Date of Patent: September 14, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Andrew W. Phillips, Clinton E. Carey, Scott H. Wittkopp
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Publication number: 20100227730Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.Type: ApplicationFiled: March 4, 2009Publication date: September 9, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey
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Publication number: 20100227729Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide at least ten forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets, six torque-transmitting devices, and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members and the transmission housing, and are operated in combinations of three to establish at least ten forward speed ratios and one reverse speed ratio.Type: ApplicationFiled: March 4, 2009Publication date: September 9, 2010Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey
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Patent number: 7789787Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: September 11, 2007Date of Patent: September 7, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Scott H. Wittkopp, James M. Hart
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Patent number: 7789789Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: September 11, 2007Date of Patent: September 7, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Scott H. Wittkopp, James M. Hart
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Patent number: 7789790Abstract: A transmission is provided having an input member, an output member, three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and a brake arranged within a transmission housing.Type: GrantFiled: September 11, 2007Date of Patent: September 7, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Scott H. Wittkopp