Plural Suns Braked Patents (Class 475/288)
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Patent number: 8371975Abstract: A power train for a hybrid vehicle comprising may include: a first planetary gear set including rotary elements; a second planetary gear set including rotary elements at least one of which is connected with at least one of the rotary elements of the first planetary gear set; a first clutch that is configured to connect/disconnect one of the rotary elements of the first planetary gear set with/from one of the rotary elements of the second planetary gear set; and a first brake that is configured to restrain rotation of one rotary element of the second planetary gear set, wherein at least two or more independent power sources and an output element are connected to come of the rotary elements of the first planetary gear set and the second planetary gear set.Type: GrantFiled: December 2, 2009Date of Patent: February 12, 2013Assignee: Hyundai Motor CompanyInventors: Kangsoo Seo, Hyutae Shim
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Patent number: 8360923Abstract: A transmission is provided that includes a first compound planetary gear set and a second planetary gear set. An input member, an output member and the planetary gear sets are arranged coaxially with one another to define a first axis of rotation. A first and a second layshaft are arranged coaxially with one another to define a second axis of rotation. A first set of intermeshing gears transfer torque from the input member to the first layshaft. A second set of intermeshing gears transfer torque from the second layshaft to the second planetary gear set. Seven torque-transmitting mechanisms are engagable in different combinations to establish multiple forward speed ratios and a reverse speed ratio between the input member and the output member.Type: GrantFiled: November 29, 2010Date of Patent: January 29, 2013Assignee: GM Global Technology Operations LLCInventors: Alexander Filippovich Kraynev, Vladimir Konstantinovich Astashev, Konstantin Borisovich Salamandra, Madhusudan Raghavan
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Patent number: 8360925Abstract: A transmission is provided that includes a first compound planetary gear set and a second simple planetary gear set. An input member, an output member and the planetary gear sets are arranged coaxially with one another to define a first axis of rotation. A first and a second layshaft are arranged coaxially with one another to define a second axis of rotation. A first set of intermeshing gears transfer torque from the input member to the first layshaft. A second set of intermeshing gears transfer torque from the second layshaft to the second planetary gear set. Seven torque-transmitting mechanisms are engagable in different combinations to establish multiple forward speed ratios and a reverse speed ratio between the input member and the output member.Type: GrantFiled: November 29, 2010Date of Patent: January 29, 2013Assignee: GM Global Technology Operations LLCInventors: Alexander Filippovich Kraynev, Vladimir Konstantinovich Astashev, Konstantin Borisovich Salamandra, Madhusudan Raghavan
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Patent number: 8343007Abstract: An automatic transmission includes an input shaft, an output shaft and four planetary gear assemblies each having a first, a second and a third element. The automatic transmission includes six fixed or rigid interconnections: one from a third element of the second planetary gear assembly to a second element of the fourth planetary gear assembly, one from a second element of the third planetary gear assembly to the second element of the fourth planetary gear assembly, one from a third element of the first planetary gear assembly to a second element of the second planetary gear assembly, one from a third element of the third planetary gear assembly to a first element of the fourth planetary gear assembly and one from an element of the second planetary gear assembly to an element of the first planetary gear assembly. The automatic transmission also includes four clutches and three brakes which may be selectively engaged to provide nine, ten or eleven speed transmission operation.Type: GrantFiled: January 31, 2011Date of Patent: January 1, 2013Assignee: GM Global Technology Operations LLCInventors: James M. Hart, Scott H. Wittkopp, Bret M. Olson
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Patent number: 8298111Abstract: An automatic transmission includes an input shaft, an acceleration/deceleration output unit that is coupled to the input shaft and has a first element that selectively outputs a decelerated rotation or an accelerated rotation of the input shaft and a second element that outputs a same number of rotations as the input shaft, a multiple planetary gear set for shifting having third, fourth, fifth and sixth elements, a first clutch coupling the first element and the sixth element selectively, a second clutch coupling the input shaft and the fourth element selectively, a third clutch coupling the first element and the third element selectively, a fourth clutch coupling the second element and the third element selectively, a first brake fixing the third element selectively, a second brake fixing the fourth element selectively and an output shaft coupled directly to the fifth element.Type: GrantFiled: July 3, 2008Date of Patent: October 30, 2012Assignee: Aisin AW Co., Ltd.Inventors: Hiroshi Kato, Masaaki Nishida
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Patent number: 8292767Abstract: A powertrain is provided having a multi-speed transmission. The 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: May 11, 2009Date of Patent: October 23, 2012Assignee: GM Global Technology Operations LLCInventors: James B. Borgerson, Donald L. Dusenberry, Andrew W. Phillips, Scott H. Wittkopp, Clinton E. Carey, James M. Hart
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Patent number: 8277356Abstract: 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: July 12, 2011Date of Patent: October 2, 2012Assignee: GM Global Technology Operations LLCInventors: James M. Hart, Clinton E. Carey, Andrew W. Phillips, Scott H. Wittkopp
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Patent number: 8251856Abstract: A transmission of the present invention has 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. The torque transmitting devices are selectively engageable in combinations of at least two to establish at least eight forward speed ratios and at least one reverse speed ratio.Type: GrantFiled: January 15, 2010Date of Patent: August 28, 2012Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey
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Patent number: 8241167Abstract: A front wheel drive transmission is provided having a transmission input member, a transmission 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 a brake arranged within a transmission housing.Type: GrantFiled: January 27, 2009Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8241169Abstract: 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 clutches or brakes.Type: GrantFiled: August 4, 2011Date of Patent: August 14, 2012Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey, Madhusudan Raghavan
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Patent number: 8226521Abstract: 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 clutches or brakes. The torque transmitting devices 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.Type: GrantFiled: June 13, 2011Date of Patent: July 24, 2012Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips, Clinton E. Carey
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Patent number: 8206257Abstract: A multi-speed transmission having four gearsets, eight shafts and six shifting elements. The sun gear of gearset (P2) couples, via shaft (5) and brake (05), the housing (G), and, via clutch (15) the drive shaft. The carriers of gearsets (P2, P3) communicate, via shaft (4) and brake (04), with housing (G), and the sun gear of gearset (P3) communicates, via shaft (8) and clutch (18), with the drive shaft. The ring gears of gearsets (P2, P3) communicate, via shaft (6), with the ring gear of gearset (P4) and the sun gear of gearset (P1). The ring gear of gearset (P4) and the sun gear of gearset (P1) are connected with one another. The sun gear of gearset (P4) communicates, via shaft (3) and brake (03), with housing (G). The carriers of gearsets (P1, P4) communicate, via shaft (7) and clutch (17), with the drive shaft and the output shaft couples the ring gear of gearset (P1).Type: GrantFiled: August 11, 2009Date of Patent: June 26, 2012Assignee: ZF Friedrichshafen AGInventors: Gerhard Gumpoltsberger, Martin Brehmer, Peter Ziemer, Peter Tiesler, Gabor Diosi, Josef Haupt
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Patent number: 8206252Abstract: A hybrid powertrain includes an internal combustion engine, at least one electric machine and a multi-speed transmission. The electric machine is connected to a shaft between the internal combustion engine and the multi-speed transmission. The 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: April 17, 2009Date of Patent: June 26, 2012Assignee: GM Global Technology Operations LLCInventors: Donald L. Dusenberry, James B. Borgerson, James M. Hart, Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey
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Patent number: 8202190Abstract: 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 brakes.Type: GrantFiled: July 16, 2008Date of Patent: June 19, 2012Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, Scott H. Wittkopp, James M. Hart, Clinton E. Carey
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Patent number: 8197378Abstract: A front wheel drive 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: November 19, 2008Date of Patent: June 12, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8192321Abstract: An automatic transmission includes 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 clutches or brakes.Type: GrantFiled: March 9, 2011Date of Patent: June 5, 2012Assignee: GM Global Technology Operations LLCInventors: James M. Hart, Andrew W. Phillips, Scott H. Wittkopp, Clinton E. Carey, Madhusudan Raghavan
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Patent number: 8192320Abstract: A front wheel drive 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 a brake arranged within a transmission housing.Type: GrantFiled: January 27, 2009Date of Patent: June 5, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8187138Abstract: A front wheel drive 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: December 1, 2008Date of Patent: May 29, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8187139Abstract: A multiple speed power transmission, comprising: a gearbox input shaft; an output shaft; and a collection of gears, friction clutches, and passive couplers capable of transmitting power from the gearbox input shaft to the output shaft with eight forward speed ratios and one reverse speed ratio wherein the first forward speed ratio is selected by engaging friction brakes using electromechanical actuators.Type: GrantFiled: February 6, 2009Date of Patent: May 29, 2012Assignee: Ford Global Technologies, LLCInventor: Reid Alan Baldwin
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Patent number: 8177676Abstract: A front wheel drive transmission is provided having a transmission input member, a transmission 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 a brake arranged within a transmission housing.Type: GrantFiled: February 6, 2009Date of Patent: May 15, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8167767Abstract: A front wheel drive transmission is provided having a transmission input member, a transmission 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 a brake arranged within a transmission housing.Type: GrantFiled: December 11, 2008Date of Patent: May 1, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Publication number: 20120071290Abstract: The present invention relates to a multistage transmission, comprising: a center shaft arranged in a frame such that the center shaft does not rotate; an input member arranged coaxially to the center shaft such that the input member is rotatable; a hub arranged coaxially to the center shaft such that the hub is rotatable; an epicyclic gear set which is coupled to the input member and mounted on the hub, and which is arranged coaxially to the center shaft such that the epicyclic gear set is rotatable, and which has at least two pairs of epicyclic gears, wherein each of the epicyclic gears has a sun gear, a ring gear, a satellite carrier and a pinion; an axial clutch which is involved in the operation of the sun gear which is selectively coupled to or separated from at least one of the peripheral members; a clutch assembly in which at least one of the clutches in a rotating direction are arranged in correspondence with the respective sun gears, wherein said clutches in the rotating direction are involved in theType: ApplicationFiled: May 26, 2010Publication date: March 22, 2012Inventor: Donghwan Byun
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Patent number: 8123650Abstract: A front wheel drive 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: November 19, 2008Date of Patent: February 28, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8123651Abstract: A front wheel drive 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: November 26, 2008Date of Patent: February 28, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8123649Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide at least seven forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, and three 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 two to establish at least seven forward speed ratios and one reverse speed ratio.Type: GrantFiled: January 14, 2009Date of Patent: February 28, 2012Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey
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Patent number: 8123652Abstract: A front wheel drive 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: November 26, 2008Date of Patent: February 28, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8118700Abstract: A front wheel drive 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: November 12, 2008Date of Patent: February 21, 2012Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8088033Abstract: A transmission having gearsets (P1-P4), shafts (1-8) and shifting elements (03, 04, 05, 48, 67, 78). Shaft (1) couples an input and carrier of gearset (P1), shaft (2) couples the output and carriers of gearsets (P3, P4), shaft (3) couples the ring gear of gearset (P2) and the sun gear of gearset (P1), shaft (4) couples the ring gear of gearset (P3) and the sun gear of gearset (P4), shaft (5) couples the ring gear of gearset (P4), shaft (6) couples the sun gear of gearset (P2) and the ring gear of gearset (P1), shaft (7) is connected to the sun gear of gearset (P3), and shaft (8) is connected to the carrier of gearset (P2). Shafts (3, 4 and 5) can each engage housing (G) by way of respective brakes (03, 04, 05), clutches (48; 67; 78) can couple, respectively, shafts (4, 8; 6, 7; 7, 8).Type: GrantFiled: December 6, 2007Date of Patent: January 3, 2012Assignee: ZF Friedrichshafen AGInventors: Ralf Boss, Gerhard Gumpoltsberger, Hans-Peter Freudenreich
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Patent number: 8083630Abstract: The transmission includes a housing, input and output shafts, and four planetary gear trains each having at least three members including a ring gear, at least one carrier, and a sun gear. The input and output shafts are is continuously interconnected with gear(s) and/or carrier(s). Links continuously interconnect the carrier(s) and/or gears between gear trains. The six torque-transmitting mechanisms are engagable in combinations of two to establish at least seven forward speed ratios and at least one reverse speed ratio between the input shaft and the output shaft.Type: GrantFiled: December 22, 2008Date of Patent: December 27, 2011Assignee: Caterpillar Inc.Inventors: James S. Rice, Kevin G. Meyer, Michael W. Krause, Larry W. Carpenter
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Patent number: 8083631Abstract: A planetary gear type gearbox includes a front-stage transmission section and rear-stage transmission section. The front-stage transmission section is for transmitting power from an input shaft to an intermediate shaft. The front-stage transmission section includes first, second and third clutches, two sets of planetary gear trains axially adjoining to each other. The first planetary gear train includes a sun gear, a carrier, a ring gear and planet gears. The second planetary gear train includes a sun gear, a carrier, a ring gear and two sets of planet gears. In the activation of second and third clutches, power is inputted into the carrier from the input shaft and is then outputted from the ring gear of the first planetary gear train.Type: GrantFiled: August 27, 2008Date of Patent: December 27, 2011Assignee: Komatsu Ltd.Inventor: Masaki Shiohara
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Patent number: 8066610Abstract: 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 at least one brake.Type: GrantFiled: November 10, 2010Date of Patent: November 29, 2011Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, Clinton E. Carey
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Patent number: 8047952Abstract: A front wheel drive transmission is provided having a transmission input member, a transmission 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 a brake arranged within a transmission housing.Type: GrantFiled: December 8, 2008Date of Patent: November 1, 2011Assignee: GM Global Technology Operations LLCInventors: Clinton E. Carey, Scott H. Wittkopp, James M. Hart, Andrew W. Phillips
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Patent number: 8007394Abstract: 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 brakes.Type: GrantFiled: October 17, 2008Date of Patent: August 30, 2011Assignee: GM Global Technology Operations LLCInventors: Andrew W. Phillips, Clinton E. Carey, James M. Hart, Scott H. Wittkopp
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Publication number: 20110183807Abstract: A transmission with forward and reverse gears comprising planetary gearsets, shafts and shift elements. The sun gear of gearset (P1) couples shaft (5) that is connectable, via brake (05), to housing (G). The carriers of gearsets (P1, P2) couple shaft (8) which is connectable, via clutch (18), to drive input shaft (1). Input shaft (1) is connectable, via clutches (16, 14), respectively to shafts (6, 4). Shaft (6) couples the ring gear of gearset (P3). Shaft (4) is connectable, via brake (04), to housing (G) and couples the sun gears of gearsets (P4, P3). The ring gears of gearsets (P1, P2) couple drive output shaft (2). The carrier of gearset (P3) couples shaft (7) which couples a component connecting the ring gear of gearset (P4) and the sun gear of gearset (P2). The carrier of gearset (P4) couples shaft (3) which is connectable, via brake (03), to housing (G).Type: ApplicationFiled: August 7, 2009Publication date: July 28, 2011Applicant: ZF FRIEDRICHSHAFEN AGInventors: Gerhard Gumpoltsberger, Martin Brehmer, Peter Ziemer, Peter Tiesler, Gabor Diosi, Josef Haupt
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Patent number: 7980985Abstract: A gear train of an automatic transmission for a vehicle may include four planetary gear sets with three clutches and two brakes and realizes eight forward speeds, and the gear train of an automatic transmission for a vehicle may minimize the number of friction elements, simplify the scheme of an transmission, and enhance transmitting power efficiency and fuel efficiency. The four planetary gear sets may include a first planetary gear set including a first sun gear, a first planet carrier, and a first ring gear, a second planetary gear set including a second sun gear, a second planet carrier, and a second ring gear, a third planetary gear set including a third sun gear, a third planet carrier, and a third ring gear, and a fourth planetary gear set including a fourth sun gear, a fourth planet carrier, and a fourth ring gear.Type: GrantFiled: November 12, 2008Date of Patent: July 19, 2011Assignee: Hyundai Motor CompanyInventors: Kang Soo Seo, Hyu Tae Shim
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Patent number: 7976425Abstract: 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 clutches or brakes.Type: GrantFiled: March 19, 2008Date of Patent: July 12, 2011Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, James M. Hart, Andrew W. Phillips, Clinton E. Carey
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Patent number: 7887457Abstract: 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: February 15, 2011Assignee: GM Global Technology Operations LLCInventors: Scott H. Wittkopp, Andrew W. Phillips, James M. Hart, Clinton E. Carey, Madhusudan Raghavan
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Publication number: 20110015029Abstract: A transmission is provided having an input member, an output member, a three planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. The planetary gear sets include first, second and third members. The torque transmitting devices include two clutches and two brakes.Type: ApplicationFiled: June 24, 2010Publication date: January 20, 2011Applicant: GM GLOBAL TECHNOLOGY OPERATIONS, INC.Inventors: Andrew W. Phillips, James M. Hart, Scott H. Wittkopp, James B. Borgerson
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Patent number: 7862468Abstract: 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, three fixed interconnections and a grounded member. 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 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 11, 2007Date of Patent: January 4, 2011Assignee: 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: 7841960Abstract: A multiple speed power transmission comprising: four epicyclic gearing assemblies each having first, second, and third rotating elements with specified interconnections, an input shaft connected to one of the rotating elements, an output shaft, two rotating clutches releasably connecting the input shaft to rotating elements, and four brakes selectively holding rotating elements against rotation. Clutches and brakes are applied in combinations of two to produce eight forward ratios and one reverse ratio.Type: GrantFiled: March 18, 2008Date of Patent: November 30, 2010Assignee: Ford Global TechnologiesInventor: Reid Alan Baldwin
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Patent number: 7833119Abstract: A powertrain includes an engine with an engine output member, such as a crankshaft, and a first motor/generator having a first rotor connected to the crankshaft for rotation therewith. A transmission includes a transmission input member, a transmission output member, and a differential gearing arrangement selectively operatively connecting the transmission input member and the transmission output member. A plurality of torque transmitting devices is selectively engageable to provide a plurality of fixed speed ratios between the transmission input member and the transmission output member. A second motor/generator includes a second rotor connected to the gearing arrangement to provide torque to the transmission output member. The transmission input member is selectively connectable to the engine output member and the first rotor to alternate between a series hybrid drive mode and a fixed ratio mode of powertrain operation. A corresponding method is also provided.Type: GrantFiled: September 23, 2005Date of Patent: November 16, 2010Assignee: GM Global Technology Corporation, Inc.Inventors: Donald Klemen, Michael R. Schmidt
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Patent number: 7828691Abstract: 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 at least one brake.Type: GrantFiled: January 25, 2008Date of Patent: November 9, 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: 7828690Abstract: 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: GrantFiled: March 4, 2009Date of Patent: November 9, 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: 7824302Abstract: A transmission having gearsets (RS1-RS4), shafts (1-8) and shifting elements (A-E). A carrier of gearset (RS4) and an input shaft forming shaft (1), a carrier of gearset (RS3) and an output shaft form shaft (2), sun gears of gearsets (RS3, RS4) form shaft (3). A ring gear of gearset (RS1) forms shaft (4). Ring and sun gears respectively of gearsets (RS2, RS1) couple as shaft (5), a carrier of gearset (RS1) and a ring gear of gearset (RS3) form shaft (6), sun and ring gears respectively of gearsets (RS2, RS4) couple as shaft (7). A carrier of gearset (RS2) forms shaft (8). Located in the flow of power: elements (A, B) are respectively between shafts (3, 4) and a 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: GrantFiled: March 15, 2006Date of Patent: November 2, 2010Assignee: ZF Friedrichshafen AGInventors: Gabor Diosi, Josef Haupt, Gerhard Gumpoltsberger, Peter Ziemer, Hagen Döpfert, Uwe Firzlaff, Martin Brehmer, Christoph Hutzel
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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: 7798935Abstract: 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 21, 2010Assignee: GM Global Technology Operations Inc.Inventors: Scott H. Wittkopp, Andrew W. Phillips, Clinton E. Carey, James M. Hart
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Patent number: 7794354Abstract: A variable speed transmission is disclosed. In one embodiment, a two shaft and two opposing planetary gearset arrangement is utilized. Drive and driven shafts are connected as respective inputs and outputs to opposing planetary gears of the planetary gearsets. Respective sun gears are rotatably coupled to each end of an intermediary shaft which traverses the span between the planetary gearsets. Respective ring gears are meshed to a pair of spur gears coupled to a secondary shaft which also traverses the span. In operation, the coordinated actuation of a pair of clutch-brake assemblies associated with the intermediary and secondary shafts substantially continuously varies the transmission of torque from the drive shaft to the driven shaft.Type: GrantFiled: February 8, 2008Date of Patent: September 14, 2010Inventor: Jeffrey W. Bradshaw
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Patent number: 7785225Abstract: 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 include clutches and a brake.Type: GrantFiled: March 10, 2008Date of Patent: August 31, 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: 7771305Abstract: 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, the transmission housing and each other, and are operated in combinations of three to establish at least ten forward speed ratios and one reverse speed ratio.Type: GrantFiled: February 16, 2009Date of Patent: August 10, 2010Assignee: GM Global Technology Operations, Inc.Inventors: James M. Hart, Andrew W. Phillips, Clinton E. Carey, Scott H. Wittkopp
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Patent number: 7736264Abstract: A transmission includes four planetary gearsets and five torque transmitting devices operative to provide eight forward speed ratios. At least one of the torque transmitting devices is engaged during two different speed ratios. The torque transmitting device includes a piston partially defining two separate and independently pressurizable chambers. Accordingly, the transmission enables both chambers to be pressurized for speed ratios in which a high torque capacity is required of the torque transmitting device, and only one of the chambers to be pressurized for speed ratios in which a low torque capacity is required of the torque transmitting device.Type: GrantFiled: September 27, 2007Date of Patent: June 15, 2010Assignee: GM Global Technology Operations, Inc.Inventors: Steven P. Moorman, John E. Marano, Andrew W. Phillips