WO2016069361A1 - Multi-speed transmission - Google Patents
Multi-speed transmission Download PDFInfo
- Publication number
- WO2016069361A1 WO2016069361A1 PCT/US2015/056825 US2015056825W WO2016069361A1 WO 2016069361 A1 WO2016069361 A1 WO 2016069361A1 US 2015056825 W US2015056825 W US 2015056825W WO 2016069361 A1 WO2016069361 A1 WO 2016069361A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- planetary gearset
- interconnecting
- torque
- planetary
- transmitting mechanism
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H3/00—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion
- F16H3/44—Toothed gearings for conveying rotary motion with variable gear ratio or for reversing rotary motion using gears having orbital motion
- F16H3/62—Gearings having three or more central gears
- F16H3/66—Gearings having three or more central gears composed of a number of gear trains without drive passing from one train to another
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/003—Transmissions for multiple ratios characterised by the number of forward speeds
- F16H2200/006—Transmissions for multiple ratios characterised by the number of forward speeds the gear ratios comprising eight forward speeds
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2002—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears
- F16H2200/2012—Transmissions using gears with orbital motion characterised by the number of sets of orbital gears with four sets of orbital gears
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/203—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes
- F16H2200/2043—Transmissions using gears with orbital motion characterised by the engaging friction means not of the freewheel type, e.g. friction clutches or brakes with five engaging means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/20—Transmissions using gears with orbital motion
- F16H2200/2097—Transmissions using gears with orbital motion comprising an orbital gear set member permanently connected to the housing, e.g. a sun wheel permanently connected to the housing
Definitions
- the present disclosure relates to a multiple speed transmission, and in particular to a multiple speed transmission capable of achieving eight or more speeds.
- Multiple speed transmissions use a number of friction clutches or brakes, planetary gearsets, shafts, and other elements to achieve a plurality of gear or speed ratios.
- the architecture i.e., packaging or layout of the aforementioned elements, is determined based on cost, size, packaging constraints, and desired ratios.
- a multiple speed transmission includes an input member; an output member; first, second, third and fourth planetary gearsets each having first, second and third members; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque- transmitting mechanism selectively engageable to interconnect the second member of the second planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the first member of the fourth planetary gearset with the third member of the first planetary gearset and the second member of the third planetary gearset; a third torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the first member of the fourth planetary gearset; a fourth torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the second member of the fourth planetary gearset; and
- one member of the fourth planetary gearset is continuously interconnected with the input member and a different member of the fourth planetary gearset is continuously interconnected with the output member.
- the input member is continuously interconnected with the first member of the fourth planetary gearset and the output member is continuously interconnected with the second member of the fourth planetary gearset.
- the plurality of interconnecting members includes a first interconnecting member continuously
- the plurality of interconnecting members includes a second interconnecting member continuously interconnecting the third member of the first planetary gearset with the second member of the third planetary gearset.
- the plurality of interconnecting members includes a third interconnecting member continuously interconnecting the first member of the first planetary gearset to the first member of the second planetary gearset.
- the plurality of interconnecting members includes a fourth interconnecting member continuously interconnecting the second member of the second planetary gearset with the first member of the third planetary gearset.
- the plurality of interconnecting members includes a fifth interconnecting member continuously interconnecting the third member of the second planetary gearset with the third member of the fourth planetary gearset.
- the plurality of interconnecting members includes a sixth interconnecting member continuously connected to the third member of the third planetary gearset.
- the first torque-transmitting mechanism is selectively engageable to interconnect the first member of the third planetary gearset with the stationary member.
- a multiple speed transmission includes an input member; an output member; first, second, third and fourth planetary gearsets each having a sun gear, a ring gear, and a carrier member; a plurality of
- interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque-transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gearset and the sun gear of the third planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the fourth planetary gearset with the ring gear of the first planetary gearset and the carrier member of the third planetary gearset; a third torque- transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the sun gear of the fourth planetary gearset; a fourth torque- transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the carrier member of the fourth planetary gearset; and a fifth torque- transmitting mechanism selectively engageable to interconnect the sun gear of the first planetary gearset and the sun gear of the second planetary gearset with the carrier
- one member of the fourth planetary gearset is continuously interconnected with the input member and a different member of the fourth planetary gearset is continuously interconnected with the output member.
- the input member is continuously interconnected with the sun gear of the fourth planetary gearset and the output member is continuously interconnected with the carrier member of the fourth planetary gearset.
- the plurality of interconnecting members includes a first interconnecting member continuously interconnecting the carrier member of the first planetary gearset with the stationary member.
- the plurality of interconnecting members includes a second interconnecting member continuously interconnecting the ring gear of the first planetary gearset with the carrier member of the third planetary gearset.
- the plurality of interconnecting members includes a third interconnecting member continuously interconnecting the sun gear of the first planetary gearset to the sun gear of the second planetary gearset.
- the plurality of interconnecting members includes a fourth interconnecting member continuously interconnecting the carrier member of the second planetary gearset with the sun gear of the third planetary gearset.
- the plurality of interconnecting members includes a fifth interconnecting member continuously interconnecting the ring gear of the second planetary gearset with the ring gear of the fourth planetary gearset.
- the plurality of interconnecting members includes a sixth interconnecting member continuously connected to the ring gear of the third planetary gearset.
- a multiple speed transmission includes an input member; an output member; first, second, third and fourth planetary gearsets each having a sun gear, a ring gear, and a carrier member; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque- transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gearset and the sun gear of the third planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the fourth planetary gearset with the ring gear of the first planetary gearset and the carrier member of the third planetary gearset; a third torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the sun gear of the fourth planetary gearset; a fourth torque-transmitting mechanism selectively engageable to interconnectable to interconnect
- Fig. 1 is an exemplary block diagram and schematic view of one illustrative embodiment of a powered vehicular system
- FIG. 2 is a diagrammatic view of an embodiment of a multiple speed transmission
- Fig. 3 is a truth table presenting an example of a state of engagement of various torque transmitting mechanisms in each of the available forward and reverse speeds or gear ratios of the transmission illustrated in Fig. 2.
- Corresponding reference numerals are used to indicate corresponding parts throughout the several views.
- the drive unit 102 may include an internal combustion engine, diesel engine, electric motor, or other power-generating device.
- the drive unit 102 is configured to rotatably drive an output shaft 104 that is coupled to an input or pump shaft 106 of a conventional torque converter 108.
- the input or pump shaft 106 is coupled to an impeller or pump 1 10 that is rotatably driven by the output shaft 104 of the drive unit 102.
- the torque converter 108 further includes a turbine 112 that is coupled to a turbine shaft 14, and the turbine shaft 1 14 is coupled to, or integral with, a rotatable input shaft 124 of the transmission 1 18.
- the transmission 1 18 can also include an internal pump 120 for building pressure within different flow circuits (e.g., main circuit, lube circuit, etc.) of the
- the pump 120 can be driven by a shaft 116 that is coupled to the output shaft 104 of the drive unit 102.
- the drive unit 102 can deliver torque to the shaft 116 for driving the pump 120 and building pressure within the different circuits of the transmission 1 18.
- the transmission 118 can include a planetary gear system 122 having a number of automatically selected gears.
- An output shaft 126 of the transmission 118 is coupled to or integral with, and rotatably drives, a propeller shaft 128 that is coupled to a conventional universal joint 130.
- the universal joint 130 is coupled to, and rotatably drives, an axle 132 having wheels 134A and 134B mounted thereto at each end.
- the output shaft 126 of the transmission 118 drives the wheels 134A and 134B in a conventional manner via the propeller shaft 128, universal joint 130 and axle 132.
- a conventional lockup clutch 136 is connected between the pump 1 10 and the turbine 1 12 of the torque converter 108.
- the operation of the torque converter 108 is conventional in that the torque converter 108 is operable in a so-called "torque converter" mode during certain operating conditions such as vehicle launch, low speed and certain gear shifting conditions.
- the lockup clutch 136 is disengaged and the pump 1 10 rotates at the rotational speed of the drive unit output shaft 104 while the turbine 1 12 is rotatably actuated by the pump 110 through a fluid (not shown) interposed between the pump 1 10 and the turbine 1 12.
- torque multiplication occurs through the fluid coupling such that the turbine shaft 114 is exposed to drive more torque than is being supplied by the drive unit 102, as is known in the art.
- the torque converter 108 is alternatively operable in a so-called "lockup" mode during other operating conditions, such as when certain gears of the planetary gear system 122 of the transmission 118 are engaged.
- the lockup clutch 136 is engaged and the pump 1 10 is thereby secured directly to the turbine 1 12 so that the drive unit output shaft 104 is directly coupled to the input shaft 124 of the transmission 1 18, as is also known in the art.
- the transmission 1 18 further includes an electro-hydraulic system 138 that is fluidly coupled to the planetary gear system 122 via a number, J, of fluid paths, 140i-140j, where J may be any positive integer.
- the electro -hydraulic system 138 is responsive to control signals to selectively cause fluid to flow through one or more of the fluid paths, 140)- 140j, to thereby control operation, i.e., engagement and disengagement, of a plurality of corresponding friction devices in the planetary gear system 122.
- the plurality of friction devices may include, but are not limited to, one or more conventional brake devices, one or more torque transmitting devices, and the like.
- the operation, i.e., engagement and disengagement, of the plurality of friction devices is controlled by selectively controlling the friction applied by each of the plurality of friction devices, such as by controlling fluid pressure to each of the friction devices.
- the plurality of friction devices include a plurality of brake and torque transmitting devices in the form of conventional clutches that may each be
- the system 100 further includes a transmission control circuit 142 that can include a memory unit 144.
- the transmission control circuit 142 is illustratively
- the memory unit 144 generally includes instructions stored therein that are executable by a processor of the transmission control circuit 142 to control operation of the torque converter 108 and operation of the transmission 1 18, i.e., shifting between the various gears of the planetary gear system 122. It will be understood, however, that this disclosure contemplates other embodiments in which the transmission control circuit 142 is not microprocessor-based, but is configured to control operation of the torque converter 108 and/or transmission 118 based on one or more sets of hardwired instructions and/or software instructions stored in the memory unit 144,
- the transmission 118 include a number of sensors configured to produce sensor signals that are indicative of one or more operating states of the torque converter 108 and transmission 118, respectively.
- the torque converter 108 illustratively includes a conventional speed sensor 146 that is positioned and configured to produce a speed signal corresponding to the rotational speed of the pump shaft 106, which is the same rotational speed of the output shaft 104 of the drive unit 102.
- the speed sensor 146 is electrically connected to a pump speed input, PS, of the transmission control circuit 142 via a signal path 152, and the transmission control circuit 142 is operable to process the speed signal produced by the speed sensor 146 in a conventional manner to determine the rotational speed of the pump shaft 106/drive unit output shaft 104.
- the transmission 118 illustratively includes another conventional speed sensor 148 that is positioned and configured to produce a speed signal corresponding to the rotational speed of the transmission input shaft 124, which is the same rotational speed as the turbine shaft 114.
- the input shaft 124 of the transmission 118 is directly coupled to, or integral with, the turbine shaft 1 14, and the speed sensor 148 may alternatively be positioned and configured to produce a speed signal corresponding to the rotational speed of the turbine shaft 114.
- the speed sensor 148 is electrically connected to a transmission input shaft speed input, TIS, of the transmission control circuit 142 via a signal path 154, and the transmission control circuit 142 is operable to process the speed signal produced by the speed sensor 148 in a conventional manner to determine the rotational speed of the turbine shaft 1 14/transmission input shaft 124.
- the transmission 118 further includes yet another speed sensor 150 that is positioned and configured to produce a speed signal corresponding to the rotational speed of the output shaft 126 of the transmission 1 18.
- the speed sensor 150 may be conventional, and is electrically connected to a transmission output shaft speed input, TOS, of the transmission control circuit 142 via a signal path 156.
- the transmission control circuit 142 is configured to process the speed signal produced by the speed sensor 150 in a conventional manner to determine the rotational speed of the transmission output shaft 126.
- the transmission 118 further includes one or more actuators configured to control various operations within the transmission 118.
- the electro-hydraulic system 138 described herein illustratively includes a number of actuators, e.g., conventional solenoids or other conventional actuators, that are electrically connected to a number, J, of control outputs, CPi - CPj, of the transmission control circuit 142 via a corresponding number of signal paths 721 - 72j, where J may be any positive integer as described above.
- the actuators within the electro -hydraulic system 138 are each responsive to a corresponding one of the control signals, CP] - CPj, produced by the transmission control circuit 142 on one of the corresponding signal paths 72 j - 72j to control the friction applied by each of the plurality of friction devices by controlling the pressure of fluid within one or more corresponding fluid passageway 140] - 140j, and thus control the operation, i.e., engaging and disengaging, of one or more corresponding friction devices, based on information provided by the various speed sensors 146, 148, and/or 150.
- the friction devices of the planetary gear system 122 are illustratively controlled by hydraulic fluid which is distributed by the electro-hydraulic system in a conventional manner.
- the electro-hydraulic system 138 illustratively includes a conventional hydraulic positive displacement pump (not shown) which distributes fluid to the one or more friction devices via control of the one or more actuators within the electro-hydraulic system 138.
- the control signals, CPj - CPj are illustratively analog friction device pressure commands to which the one or more actuators are responsive to control the hydraulic pressure to the one or more frictions devices.
- each of the plurality of friction devices may alternatively be controlled in accordance with other conventional friction device control structures and techniques, and such other conventional friction device control structures and techniques are contemplated by this disclosure.
- the analog operation of each of the friction devices is controlled by the control circuit 142 in accordance with instructions stored in the memory unit 144.
- the system 100 further includes a drive unit control circuit 160 having an input/output port (I/O) that is electrically coupled to the drive unit 102 via a number, K, of signal paths 162, wherein may be any positive integer.
- the drive unit control circuit 160 may be conventional, and is operable to control and manage the overall operation of the drive unit 102.
- the drive unit control circuit 160 further includes a communication port, COM, which is electrically connected to a similar communication port, COM, of the transmission control circuit 142 via a number, L, of signal paths 164, wherein L may be any positive integer.
- the one or more signal paths 164 are typically referred to collectively as a data link.
- the drive unit control circuit 160 and the transmission control circuit 142 are operable to share information via the one or more signal paths 164 in a conventional manner.
- the drive unit control circuit 160 and transmission control circuit 142 are operable to share information via the one or more signal paths 164 in the form of one or more messages in accordance with a society of automotive engineers (SAE) J-1939 communications protocol, although this disclosure contemplates other embodiments in which the drive unit control circuit 160 and the transmission control circuit 142 are operable to share information via the one or more signal paths 164 in accordance with one or more other conventional communication protocols (e.g., from a conventional databus such as J1587 data bus, J 1939 data bus, IESCAN data bus, GMLAN, Mercedes PT-CAN).
- SAE society of automotive engineers
- a schematic representation or stick diagram illustrates one embodiment of a multi-speed transmission 200 according to the present disclosure.
- the transmission 200 includes an input shaft 202 and an output shaft 204.
- the input shaft 202 and output shaft 204 can be disposed along the same axis or centerline of the transmission 200.
- the different shafts can be disposed along different axes or centerlines.
- the different shafts can be disposed parallel to one another, but along different axes or centerlines. Other aspect can be appreciated by one skilled in the art.
- the transmission 200 can also include a plurality of planetary gearsets.
- the transmission 200 includes a first planetary gearset 206, a second planetary gearset 208, a third planetary gearset 210, and a fourth planetary gearset 212.
- Each planetary gearset can be referred to as a simple or compound planetary gearset.
- one or more of the plurality of planetary gearsets can be formed as an idler planetary gearset.
- each of the planetary gearsets is represented as being a simple planetary gearset.
- One or more of the plurality of planetary gearsets can be arranged in different locations within the transmission 200, but for sake of simplicity and in this particular example only, the planetary gearsets are aligned in an axial direction consecutively in sequence (i.e., first, second, third, and fourth between the input and output shafts).
- the transmission 200 may also include a plurality of torque-transmitting or gearshifting mechanisms.
- one or more of these mechanisms can include a clutch or brake.
- each of the plurality of mechanisms is disposed within an outer housing of the transmission 200. In another aspect, however, one or more of the mechanisms may be disposed outside of the housing.
- Each of the plurality of mechanisms can be coupled to one or more of the plurality of planetary gearsets, which will be described further below.
- the transmission 200 can include a first torque- transmitting mechanism 258 that is configured to function as a brake (e.g., the torque- transmitting mechanism is fixedly coupled to the outer housing of the transmission 200).
- the brake can be configured as a shiftable-friction-locked disk brake, shiftable friction- locked band brake, shiftable form-locking claw or conical brake, or any other type of known brake.
- the transmission 200 can include a second torque-transmitting mechanism 260, a third torque-transmitting mechanism 262, a fourth torque-transmitting mechanism 264, and a fifth torque-transmitting mechanism 266 that are configured to function as clutches.
- These can be shiftable friction-locked multi-disk clutches, shiftable form-locking claw or conical clutches, wet clutches, or any other known form of a clutch. With these five torque- transmitting mechanisms, selective shifting of at least eight forward gears and at least one reverse gear is possible.
- the transmission 200 of Fig. 2 may also include up to eight different shafts, which is inclusive of the input shaft 202 and output shaft 204.
- Each of these shafts designated as a first shaft 222, a second shaft 224, a third shaft 226, a fourth shaft 236, a fifth shaft 246, and a sixth shaft 248, are configured to be connected to one or more of the plurality of planetary gearsets or plurality of torque-transmitting mechanism between the input shaft 202 and output shaft 204.
- the first planetary gearset 206 can include a first sun gear 214, a first ring gear 216, and a first carrier member 218 that rotatably supports a set of pinion gears 220.
- the second planetary gearset 208 can include a second sun gear 228, a second ring gear 230, and a second carrier member 232 that rotatably supports a set of pinion gears 234.
- the third planetary gearset 210 can include a third sun gear 238, a third ring gear 240, and a third carrier member 242 that rotatably supports a set of pinion gears 244.
- the fourth planetary gearset 212 can include a fourth sun gear 250, a fourth ring gear 252, and a fourth carrier member 254 that rotatably supports a set of pinion gears 256.
- the transmission 200 is capable of transferring torque from the input shaft 202 to the output shaft 204 in at least eight forward gears or ratios and at least one reverse gear or ratio.
- Each of the forward torque ratios and the reverse torque ratios can be attained by the selective engagement of one or more of the torque-transmitting mechanisms (i.e., torque- transmitting mechanisms 258, 260, 262, 264, and 266).
- torque-transmitting mechanisms i.e., torque- transmitting mechanisms 258, 260, 262, 264, and 266
- Those skilled in the art will readily understand that a different speed ratio is associated with each torque ratio.
- at least eight forward speed ratios and at least one reverse speed ratio may be attained by
- kinematic coupling of the first planetary gearset 206 is shown in Fig. 2.
- the first sun gear 214 is coupled to the third shaft 226 for common rotation therewith.
- the first ring gear 216 is coupled to the second shaft 224 for common rotation therewith.
- First pinion gears 220 are configured to intermesh with the first sun gear 214 and first ring gear 216.
- First carrier member 218 is coupled to the first shaft 222, which is directly connected to a stationary member, e.g., transmission case, G.
- the second sun gear 228 is coupled to the third shaft 226 and first sun gear 214 for common rotation therewith.
- the second ring gear 230 is coupled to the fifth shaft 246 for common rotation therewith.
- Second pinion gears 234 are configured to intermesh with the second sun gear 228 and second ring gear 230, and the second carrier member 232 is coupled for common rotation with the fourth shaft 236.
- the third sun gear 238 of the third planetary gearset 210 is coupled to the fourth shaft 236 for common rotation therewith.
- the third sun gear 238 is coupled to the second carrier member 232 for common rotation therewith.
- the third ring gear 240 is coupled to the sixth shaft 248 for common rotation therewith.
- Third pinion gears are configured to intermesh with the third sun gear 238 and third ring gear 240, and the third carrier member 242 is coupled for common rotation with the second shaft 224.
- the kinematic relationship of the fourth planetary gearset 212 is such that the fourth sun gear 250 is coupled to the input shaft 202 for common rotation therewith.
- the fourth ring gear 252 is coupled to the fifth shaft 246, and hence the second ring gear 230, for common rotation therewith.
- the fourth pinion gears 256 are configured to intermesh with the fourth sun gear 250 and the fourth ring gear 252.
- the fourth carrier member 254 is coupled to the output shaft 204 for common rotation therewith.
- the multiple speed transmission 200 of Fig. 2 provides that the first torque-transmitting mechanism 258 is arranged within the power flow between the fourth shaft 236 and the housing G of the transmission 200. in this manner, the first torque-transmitting mechanism 258 is configured to act as a brake.
- the second torque- transmitting mechanism 260 is arranged within the power flow between the input shaft 202 and the second shaft 224. Thus, the second torque-transmitting mechanism 260 is configured to act as a clutch.
- one of the five torque-transmitting mechanisms is configured to act as a brake and the other four torque- transmitting mechanisms are configured to act as clutches.
- the third torque-transmitting mechanism 262 is arranged within the power flow between the input shaft 202 and the sixth shaft 248.
- the fourth torque- transmitting mechanism 264 is arranged within the power flow between the sixth shaft 248 and the output shaft 204.
- the fifth torque-transmitting mechanism 266 is arranged •within the power flow between the third shaft 226 and the fourth shaft 236.
- the kinematic couplings of the embodiment in Fig. 2 can further be described with respect to the selective engagement of the torque-transmitting mechanisms with respect to one or more components of the plurality of planetary gearsets.
- the first torque-transmitting mechanism 258 is selectively engageable to couple the second carrier member 232, the third ring gear 238, and the fourth shaft 236 to the housing G of the transmission 200.
- the second torque-transmitting mechanism 260 is selectively engageable to couple the fourth sun gear 250 and the input shaft 202 to the second shaft 224, the first ring gear 21 , and the third carrier member 242.
- the third torque-transmitting mechanism 262 is selectively engageable to couple the third ring gear 240 and the sixth shaft 248 to the input shaft 202 and fourth sun gear 250.
- the fourth torque-transmitting mechanism 264 is selectively engageable to couple the third ring gear 240 and the sixth shaft 248 to the fourth carrier member 256 and the output shaft 204.
- the fifth torque-transmitting mechanism 266 is selectively engageable to couple the first sun gear 214, the second sung gear 228, and the third shaft 226 to the second carrier member 232, the third sun gear 238, and the fourth shaft 236.
- the aforementioned embodiment is capable of transmitting torque from a respective input shaft to a respective output shaft in at least eight forward torque ratios and one reverse torque ratio.
- Fig. 3 one example of a truth table is shown representing a state of engagement of various torque transmitting mechanisms in each of the available forward and reverse speeds or gear ratios of the transmission illustrated in Fig. 2. It is to be understood that Fig. 3 is only one example of any number of truth tables possible for achieving at least eight forward ratios and one reverse ratio, and one skilled in the art is capable of configuring diameters, gear tooth counts, and gear configurations to achieve other ratios.
- the reverse ratio (Rev) can be achieved by the selective engagement of the torque-transmitting mechanisms as set forth in the table. As shown, the third torque-transmitting mechanism (C3) and the fifth torque-transmitting mechanism (C5) are selectively engaged to establish the reverse ratio. Thus, in transmission 200 of Fig. 2, the selective engagement of mechanisms 262 and 266 can establish the reverse ratio.
- none of the torque-transmitting mechanisms cany torque.
- One or more of the torque-transmitting mechanisms may be engaged in neutral but not carrying torque.
- the fifth torque-transmitting mechanism can be engaged in neutral, thereby resulting in the third torque-transmitting mechanism being disengaged between a shift between the one reverse ratio and neutral.
- a first forward ratio (shown as 1 st) in the table of Fig. 3 is achieved by engaging two clutches.
- the fourth torque-transmitting mechanism 264 and the fifth torque-transmitting mechanism 266 are engaged.
- the fifth torque-transmitting mechanism may already be engaged, and the fourth torque-transmitting mechanism is selectively engaged.
- a second or subsequent forward ratio indicated as 2nd in Fig. 3
- the first torque-transmitting mechanism and the fifth torque-transmitting mechanism are selectively engaged. Therefore, when transitioning between the first forward ratio and the second forward ratio, the fourth torque-transmitting mechanism is released and the first torque- transmitting mechanism is engaged.
- a third or subsequent forward ratio indicated as 3rd forward ratio in Fig. 3, the first torque-transmitting mechanism and fourth torque-transmitting mechanism are engaged.
- the fifth torque-transmitting mechanism is released and the fourth torque-transmitting mechanism is engaged.
- a fourth or the next subsequent forward ratio indicated as 4th in Fig. 3, the first torque-transmitting mechanism and third torque-transmitting mechanism are engaged.
- the fourth torque-transmitting mechanism is released and the third torque-transmitting mechanism is engaged.
- a fifth or the next subsequent forward ratio indicated as 5th in Fig. 3, the second torque-transmitting mechanism and first torque-transmitting mechanism are selectively engaged.
- the third torque-transmitting mechanism is released and the second torque- transmitting mechanism is engaged.
- a sixth or the next subsequent forward ratio indicated as 6th in Fig. 3
- the previously engaged torque-transmitting mechanisms are both released and two different torque-transmitting mechanisms are engaged.
- the third torque- transmitting mechanism and fourth torque-transmitting mechanism are engaged.
- the first and second torque-transmitting mechanisms are released and the third and fourth torque- transmitting mechanisms are engaged.
- a seventh or the next subsequent forward ratio indicated as 7th in Fig. 3, the second torque-transmitting mechanism and the fourth torque-transmitting mechanism are engaged.
- the third torque-transmitting mechanism is released and the second torque-transmitting mechanism is engaged.
- the present disclosure contemplates that downshifts follow the reverse sequence of the corresponding upshift (as described above), and several power-on skip-shifts that are single-transition are possible (e.g. from 1st to 3rd or 3rd to 1st).
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
Abstract
The present disclosure provides a multiple speed transmission having an input member, an output member, a plurality of planetary gearsets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. The plurality of planetary gear sets includes first, second and third members. The input member is continuously interconnected with at least one member of one of the plurality of planetary gear sets, and the output member is continuously interconnected with another member of one of the plurality of planetary gear sets. At least eight forward speeds and one reverse speed are achieved by the selective engagement of the five torque-transmitting mechanisms.
Description
MULTI-SPEED TRANSMISSION
RELATED APPLICATIONS
[0001] This applications claims priority to U.S. Provisional Patent Application Ser. No. 62/068,979, filed October 27, 2014, which is hereby incorporated by reference in its entirety.
FIELD OF THE DISCLOSURE
[0002] The present disclosure relates to a multiple speed transmission, and in particular to a multiple speed transmission capable of achieving eight or more speeds.
BACKGROUND
[0003] Multiple speed transmissions use a number of friction clutches or brakes, planetary gearsets, shafts, and other elements to achieve a plurality of gear or speed ratios. The architecture, i.e., packaging or layout of the aforementioned elements, is determined based on cost, size, packaging constraints, and desired ratios. There is a need for new architectural designs of multiple speed transmissions for achieving different ratios with improved performance, cost, efficiency, responsiveness, and packaging.
SUMMARY
[0004] In one embodiment of the present disclosure, a multiple speed transmission includes an input member; an output member; first, second, third and fourth planetary gearsets each having first, second and third members; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque- transmitting mechanism selectively engageable to interconnect the second member of the second planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the first member of the fourth planetary gearset with the third member of the first planetary gearset and the second member of the third planetary gearset; a third torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the first member of the fourth planetary
gearset; a fourth torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the second member of the fourth planetary gearset; and a fifth torque-transmitting mechanism selectively engageable to interconnect the first member of the first planetary gearset and the first member of the second planetary gearset with the second member of the second planetary gearset and the first member of the third planetary gearset; 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.
[0005] In one example of this embodiment, one member of the fourth planetary gearset is continuously interconnected with the input member and a different member of the fourth planetary gearset is continuously interconnected with the output member. In another example, the input member is continuously interconnected with the first member of the fourth planetary gearset and the output member is continuously interconnected with the second member of the fourth planetary gearset. In a third example, the plurality of interconnecting members includes a first interconnecting member continuously
interconnecting the second member of the first planetary gearset with the stationary member.
[0006] In a fourth example, the plurality of interconnecting members includes a second interconnecting member continuously interconnecting the third member of the first planetary gearset with the second member of the third planetary gearset. In a fifth example, the plurality of interconnecting members includes a third interconnecting member continuously interconnecting the first member of the first planetary gearset to the first member of the second planetary gearset. In a sixth example, the plurality of interconnecting members includes a fourth interconnecting member continuously interconnecting the second member of the second planetary gearset with the first member of the third planetary gearset.
[0007] In a seventh example, the plurality of interconnecting members includes a fifth interconnecting member continuously interconnecting the third member of the second planetary gearset with the third member of the fourth planetary gearset. In an eighth example, the plurality of interconnecting members includes a sixth interconnecting member continuously connected to the third member of the third planetary gearset. In a ninth
example, the first torque-transmitting mechanism is selectively engageable to interconnect the first member of the third planetary gearset with the stationary member.
[0008] In another embodiment of the present disclosure, a multiple speed transmission includes an input member; an output member; first, second, third and fourth planetary gearsets each having a sun gear, a ring gear, and a carrier member; a plurality of
interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque-transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gearset and the sun gear of the third planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the fourth planetary gearset with the ring gear of the first planetary gearset and the carrier member of the third planetary gearset; a third torque- transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the sun gear of the fourth planetary gearset; a fourth torque- transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the carrier member of the fourth planetary gearset; and a fifth torque- transmitting mechanism selectively engageable to interconnect the sun gear of the first planetary gearset and the sun gear of the second planetary gearset with the carrier member of the second planetary gearset and the sun gear of the third planetary gearset; 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.
[0009] In one example of this embodiment, one member of the fourth planetary gearset is continuously interconnected with the input member and a different member of the fourth planetary gearset is continuously interconnected with the output member. In another example, the input member is continuously interconnected with the sun gear of the fourth planetary gearset and the output member is continuously interconnected with the carrier member of the fourth planetary gearset. In a third example, the plurality of interconnecting members includes a first interconnecting member continuously interconnecting the carrier member of the first planetary gearset with the stationary member.
[0010] In a fourth example of this embodiment, the plurality of interconnecting members includes a second interconnecting member continuously interconnecting the ring gear of the first planetary gearset with the carrier member of the third planetary gearset. In a fifth example, the plurality of interconnecting members includes a third interconnecting member continuously interconnecting the sun gear of the first planetary gearset to the sun gear of the second planetary gearset. In a sixth example, the plurality of interconnecting members includes a fourth interconnecting member continuously interconnecting the carrier member of the second planetary gearset with the sun gear of the third planetary gearset. In a seventh example, the plurality of interconnecting members includes a fifth interconnecting member continuously interconnecting the ring gear of the second planetary gearset with the ring gear of the fourth planetary gearset. In an eighth example, the plurality of interconnecting members includes a sixth interconnecting member continuously connected to the ring gear of the third planetary gearset.
[0011] In a further embodiment of this disclosure, a multiple speed transmission includes an input member; an output member; first, second, third and fourth planetary gearsets each having a sun gear, a ring gear, and a carrier member; a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets; a first torque- transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gearset and the sun gear of the third planetary gearset with a stationary member; a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the fourth planetary gearset with the ring gear of the first planetary gearset and the carrier member of the third planetary gearset; a third torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the sun gear of the fourth planetary gearset; a fourth torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the carrier member of the fourth planetary gearset; and a fifth torque-transmitting mechanism selectively engageable to interconnect the sun gear of the first planetary gearset and the sun gear of the second planetary gearset with the carrier member of the second planetary gearset and the sun gear of the third planetary gearset; a first interconnecting member of the plurality
of interconnecting members continuously interconnecting the carrier member of the first planetary gearset with the stationary member; a second interconnecting member of the plurality of interconnecting members continuously interconnecting the ring gear of the first planetary gearset with the carrier member of the third planetary gearset; a third
interconnecting member of the plurality of interconnecting members continuously
interconnecting the sun gear of the first planetary gearset to the sun gear of the second planetary gearset; a fourth interconnecting member of the plurality of interconnecting members continuously interconnecting the carrier member of the second planetary gearset with the sun gear of the third planetary gearset; a fifth interconnecting member of the plurality of interconnecting members continuously interconnecting the ring gear of the second planetary gearset with the ring gear of the fourth planetary gearset; a sixth
interconnecting member of the plurality of interconnecting members continuously connected to the ring gear of the third planetary gearset; 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.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The above-mentioned aspects of the present disclosure and the manner of obtaining them will become more apparent and the disclosure itself will be better understood by reference to the following description of the embodiments of the disclosure, taken in conjunction with the accompanying drawings, wherein:
[0013] Fig. 1 is an exemplary block diagram and schematic view of one illustrative embodiment of a powered vehicular system;
[0014] Fig. 2 is a diagrammatic view of an embodiment of a multiple speed transmission; and
[0015] Fig. 3 is a truth table presenting an example of a state of engagement of various torque transmitting mechanisms in each of the available forward and reverse speeds or gear ratios of the transmission illustrated in Fig. 2.
[0016] Corresponding reference numerals are used to indicate corresponding parts throughout the several views.
DETAILED DESCRIPTION
[0017] The embodiments of the present disclosure described below are not intended to be exhaustive or to limit the disclosure to the precise forms disclosed in the following detailed description. Rather, the embodiments are chosen and described so that others skilled in the art may appreciate and understand the principles and practices of the present disclosure.
[0018] Referring now to Fig. 1, a block diagram and schematic view of one illustrative embodiment of a vehicular system 100 having a drive unit 102 and transmission 1 18 is shown. In the illustrated embodiment, the drive unit 102 may include an internal combustion engine, diesel engine, electric motor, or other power-generating device. The drive unit 102 is configured to rotatably drive an output shaft 104 that is coupled to an input or pump shaft 106 of a conventional torque converter 108. The input or pump shaft 106 is coupled to an impeller or pump 1 10 that is rotatably driven by the output shaft 104 of the drive unit 102. The torque converter 108 further includes a turbine 112 that is coupled to a turbine shaft 14, and the turbine shaft 1 14 is coupled to, or integral with, a rotatable input shaft 124 of the transmission 1 18. The transmission 1 18 can also include an internal pump 120 for building pressure within different flow circuits (e.g., main circuit, lube circuit, etc.) of the
transmission 118. The pump 120 can be driven by a shaft 116 that is coupled to the output shaft 104 of the drive unit 102. In this arrangement, the drive unit 102 can deliver torque to the shaft 116 for driving the pump 120 and building pressure within the different circuits of the transmission 1 18.
[0019] The transmission 118 can include a planetary gear system 122 having a number of automatically selected gears. An output shaft 126 of the transmission 118 is coupled to or integral with, and rotatably drives, a propeller shaft 128 that is coupled to a conventional universal joint 130. The universal joint 130 is coupled to, and rotatably drives, an axle 132 having wheels 134A and 134B mounted thereto at each end. The output shaft 126 of the transmission 118 drives the wheels 134A and 134B in a conventional manner via the propeller shaft 128, universal joint 130 and axle 132.
[0020] A conventional lockup clutch 136 is connected between the pump 1 10 and the turbine 1 12 of the torque converter 108. The operation of the torque converter 108 is conventional in that the torque converter 108 is operable in a so-called "torque converter" mode during certain operating conditions such as vehicle launch, low speed and certain gear shifting conditions. In the torque converter mode, the lockup clutch 136 is disengaged and the pump 1 10 rotates at the rotational speed of the drive unit output shaft 104 while the turbine 1 12 is rotatably actuated by the pump 110 through a fluid (not shown) interposed between the pump 1 10 and the turbine 1 12. In this operational mode, torque multiplication occurs through the fluid coupling such that the turbine shaft 114 is exposed to drive more torque than is being supplied by the drive unit 102, as is known in the art. The torque converter 108 is alternatively operable in a so-called "lockup" mode during other operating conditions, such as when certain gears of the planetary gear system 122 of the transmission 118 are engaged. In the lockup mode, the lockup clutch 136 is engaged and the pump 1 10 is thereby secured directly to the turbine 1 12 so that the drive unit output shaft 104 is directly coupled to the input shaft 124 of the transmission 1 18, as is also known in the art.
[0021] The transmission 1 18 further includes an electro-hydraulic system 138 that is fluidly coupled to the planetary gear system 122 via a number, J, of fluid paths, 140i-140j, where J may be any positive integer. The electro -hydraulic system 138 is responsive to control signals to selectively cause fluid to flow through one or more of the fluid paths, 140)- 140j, to thereby control operation, i.e., engagement and disengagement, of a plurality of corresponding friction devices in the planetary gear system 122. The plurality of friction devices may include, but are not limited to, one or more conventional brake devices, one or more torque transmitting devices, and the like. Generally, the operation, i.e., engagement and disengagement, of the plurality of friction devices is controlled by selectively controlling the friction applied by each of the plurality of friction devices, such as by controlling fluid pressure to each of the friction devices. In one example embodiment, which is not intended to be limiting in any way, the plurality of friction devices include a plurality of brake and torque transmitting devices in the form of conventional clutches that may each be
controllably engaged and disengaged via fluid pressure supplied by the electro -hydraulic system 138. In any case, changing or shifting between the various gears of the transmission
1 18 is accomplished in a conventional manner by selectively controlling the plurality of friction devices via control of fluid pressure within the number of fluid paths 140i-140j.
[0022] The system 100 further includes a transmission control circuit 142 that can include a memory unit 144. The transmission control circuit 142 is illustratively
microprocessor-based, and the memory unit 144 generally includes instructions stored therein that are executable by a processor of the transmission control circuit 142 to control operation of the torque converter 108 and operation of the transmission 1 18, i.e., shifting between the various gears of the planetary gear system 122. It will be understood, however, that this disclosure contemplates other embodiments in which the transmission control circuit 142 is not microprocessor-based, but is configured to control operation of the torque converter 108 and/or transmission 118 based on one or more sets of hardwired instructions and/or software instructions stored in the memory unit 144,
[0023] In the system 100 illustrated in Fig. 1, the torque converter 108 and the
transmission 118 include a number of sensors configured to produce sensor signals that are indicative of one or more operating states of the torque converter 108 and transmission 118, respectively. For example, the torque converter 108 illustratively includes a conventional speed sensor 146 that is positioned and configured to produce a speed signal corresponding to the rotational speed of the pump shaft 106, which is the same rotational speed of the output shaft 104 of the drive unit 102. The speed sensor 146 is electrically connected to a pump speed input, PS, of the transmission control circuit 142 via a signal path 152, and the transmission control circuit 142 is operable to process the speed signal produced by the speed sensor 146 in a conventional manner to determine the rotational speed of the pump shaft 106/drive unit output shaft 104.
[0024] The transmission 118 illustratively includes another conventional speed sensor 148 that is positioned and configured to produce a speed signal corresponding to the rotational speed of the transmission input shaft 124, which is the same rotational speed as the turbine shaft 114. The input shaft 124 of the transmission 118 is directly coupled to, or integral with, the turbine shaft 1 14, and the speed sensor 148 may alternatively be positioned and configured to produce a speed signal corresponding to the rotational speed of the turbine shaft 114. In any case, the speed sensor 148 is electrically connected to a transmission input
shaft speed input, TIS, of the transmission control circuit 142 via a signal path 154, and the transmission control circuit 142 is operable to process the speed signal produced by the speed sensor 148 in a conventional manner to determine the rotational speed of the turbine shaft 1 14/transmission input shaft 124.
[0025] The transmission 118 further includes yet another speed sensor 150 that is positioned and configured to produce a speed signal corresponding to the rotational speed of the output shaft 126 of the transmission 1 18. The speed sensor 150 may be conventional, and is electrically connected to a transmission output shaft speed input, TOS, of the transmission control circuit 142 via a signal path 156. The transmission control circuit 142 is configured to process the speed signal produced by the speed sensor 150 in a conventional manner to determine the rotational speed of the transmission output shaft 126.
[0026] In the illustrated embodiment, the transmission 118 further includes one or more actuators configured to control various operations within the transmission 118. For example, the electro-hydraulic system 138 described herein illustratively includes a number of actuators, e.g., conventional solenoids or other conventional actuators, that are electrically connected to a number, J, of control outputs, CPi - CPj, of the transmission control circuit 142 via a corresponding number of signal paths 721 - 72j, where J may be any positive integer as described above. The actuators within the electro -hydraulic system 138 are each responsive to a corresponding one of the control signals, CP] - CPj, produced by the transmission control circuit 142 on one of the corresponding signal paths 72 j - 72j to control the friction applied by each of the plurality of friction devices by controlling the pressure of fluid within one or more corresponding fluid passageway 140] - 140j, and thus control the operation, i.e., engaging and disengaging, of one or more corresponding friction devices, based on information provided by the various speed sensors 146, 148, and/or 150.
[0027] The friction devices of the planetary gear system 122 are illustratively controlled by hydraulic fluid which is distributed by the electro-hydraulic system in a conventional manner. For example, the electro-hydraulic system 138 illustratively includes a conventional hydraulic positive displacement pump (not shown) which distributes fluid to the one or more friction devices via control of the one or more actuators within the electro-hydraulic system 138. In this embodiment, the control signals, CPj - CPj, are illustratively analog friction
device pressure commands to which the one or more actuators are responsive to control the hydraulic pressure to the one or more frictions devices. It will be understood, however, that the friction applied by each of the plurality of friction devices may alternatively be controlled in accordance with other conventional friction device control structures and techniques, and such other conventional friction device control structures and techniques are contemplated by this disclosure. In any case, however, the analog operation of each of the friction devices is controlled by the control circuit 142 in accordance with instructions stored in the memory unit 144.
[0028] In the illustrated embodiment, the system 100 further includes a drive unit control circuit 160 having an input/output port (I/O) that is electrically coupled to the drive unit 102 via a number, K, of signal paths 162, wherein may be any positive integer. The drive unit control circuit 160 may be conventional, and is operable to control and manage the overall operation of the drive unit 102. The drive unit control circuit 160 further includes a communication port, COM, which is electrically connected to a similar communication port, COM, of the transmission control circuit 142 via a number, L, of signal paths 164, wherein L may be any positive integer. The one or more signal paths 164 are typically referred to collectively as a data link. Generally, the drive unit control circuit 160 and the transmission control circuit 142 are operable to share information via the one or more signal paths 164 in a conventional manner. In one embodiment, for example, the drive unit control circuit 160 and transmission control circuit 142 are operable to share information via the one or more signal paths 164 in the form of one or more messages in accordance with a society of automotive engineers (SAE) J-1939 communications protocol, although this disclosure contemplates other embodiments in which the drive unit control circuit 160 and the transmission control circuit 142 are operable to share information via the one or more signal paths 164 in accordance with one or more other conventional communication protocols (e.g., from a conventional databus such as J1587 data bus, J 1939 data bus, IESCAN data bus, GMLAN, Mercedes PT-CAN).
[0029] Referring to Fig. 2, a schematic representation or stick diagram illustrates one embodiment of a multi-speed transmission 200 according to the present disclosure. The transmission 200 includes an input shaft 202 and an output shaft 204. The input shaft 202
and output shaft 204 can be disposed along the same axis or centerline of the transmission 200. In another aspect, the different shafts can be disposed along different axes or centerlines. In a further aspect, the different shafts can be disposed parallel to one another, but along different axes or centerlines. Other aspect can be appreciated by one skilled in the art.
[0030] The transmission 200 can also include a plurality of planetary gearsets. In the illustrated embodiment of Fig. 2, the transmission 200 includes a first planetary gearset 206, a second planetary gearset 208, a third planetary gearset 210, and a fourth planetary gearset 212. Each planetary gearset can be referred to as a simple or compound planetary gearset. For example, in some aspects, one or more of the plurality of planetary gearsets can be formed as an idler planetary gearset. In Fig. 2, however, each of the planetary gearsets is represented as being a simple planetary gearset.
[0031] One or more of the plurality of planetary gearsets can be arranged in different locations within the transmission 200, but for sake of simplicity and in this particular example only, the planetary gearsets are aligned in an axial direction consecutively in sequence (i.e., first, second, third, and fourth between the input and output shafts).
[0032] The transmission 200 may also include a plurality of torque-transmitting or gearshifting mechanisms. For example, one or more of these mechanisms can include a clutch or brake. In one aspect, each of the plurality of mechanisms is disposed within an outer housing of the transmission 200. In another aspect, however, one or more of the mechanisms may be disposed outside of the housing. Each of the plurality of mechanisms can be coupled to one or more of the plurality of planetary gearsets, which will be described further below.
[0033] In the embodiment of Fig. 2, the transmission 200 can include a first torque- transmitting mechanism 258 that is configured to function as a brake (e.g., the torque- transmitting mechanism is fixedly coupled to the outer housing of the transmission 200). The brake can be configured as a shiftable-friction-locked disk brake, shiftable friction- locked band brake, shiftable form-locking claw or conical brake, or any other type of known brake. The transmission 200 can include a second torque-transmitting mechanism 260, a third torque-transmitting mechanism 262, a fourth torque-transmitting mechanism 264, and a
fifth torque-transmitting mechanism 266 that are configured to function as clutches. These can be shiftable friction-locked multi-disk clutches, shiftable form-locking claw or conical clutches, wet clutches, or any other known form of a clutch. With these five torque- transmitting mechanisms, selective shifting of at least eight forward gears and at least one reverse gear is possible.
[0034] The transmission 200 of Fig. 2 may also include up to eight different shafts, which is inclusive of the input shaft 202 and output shaft 204. Each of these shafts, designated as a first shaft 222, a second shaft 224, a third shaft 226, a fourth shaft 236, a fifth shaft 246, and a sixth shaft 248, are configured to be connected to one or more of the plurality of planetary gearsets or plurality of torque-transmitting mechanism between the input shaft 202 and output shaft 204.
[0035] In Fig. 2, the first planetary gearset 206 can include a first sun gear 214, a first ring gear 216, and a first carrier member 218 that rotatably supports a set of pinion gears 220. The second planetary gearset 208 can include a second sun gear 228, a second ring gear 230, and a second carrier member 232 that rotatably supports a set of pinion gears 234. The third planetary gearset 210 can include a third sun gear 238, a third ring gear 240, and a third carrier member 242 that rotatably supports a set of pinion gears 244. The fourth planetary gearset 212 can include a fourth sun gear 250, a fourth ring gear 252, and a fourth carrier member 254 that rotatably supports a set of pinion gears 256.
[0036] The transmission 200 is capable of transferring torque from the input shaft 202 to the output shaft 204 in at least eight forward gears or ratios and at least one reverse gear or ratio. Each of the forward torque ratios and the reverse torque ratios can be attained by the selective engagement of one or more of the torque-transmitting mechanisms (i.e., torque- transmitting mechanisms 258, 260, 262, 264, and 266). Those skilled in the art will readily understand that a different speed ratio is associated with each torque ratio. Thus, at least eight forward speed ratios and at least one reverse speed ratio may be attained by
transmission 200. An example of the gear ratios that may be obtained using the
embodiments of the present disclosure are also shown in Fig. 3. Of course, other gear ratios are achievable depending on the gear diameter, gear tooth count and gear configuration selected.
[0037] As for the transmission 200, kinematic coupling of the first planetary gearset 206 is shown in Fig. 2. The first sun gear 214 is coupled to the third shaft 226 for common rotation therewith. The first ring gear 216 is coupled to the second shaft 224 for common rotation therewith. First pinion gears 220 are configured to intermesh with the first sun gear 214 and first ring gear 216. First carrier member 218 is coupled to the first shaft 222, which is directly connected to a stationary member, e.g., transmission case, G.
[0038] With respect to the second planetary gearset 208, the second sun gear 228 is coupled to the third shaft 226 and first sun gear 214 for common rotation therewith. The second ring gear 230 is coupled to the fifth shaft 246 for common rotation therewith. Second pinion gears 234 are configured to intermesh with the second sun gear 228 and second ring gear 230, and the second carrier member 232 is coupled for common rotation with the fourth shaft 236.
[0039] The third sun gear 238 of the third planetary gearset 210 is coupled to the fourth shaft 236 for common rotation therewith. Thus, the third sun gear 238 is coupled to the second carrier member 232 for common rotation therewith. The third ring gear 240 is coupled to the sixth shaft 248 for common rotation therewith. Third pinion gears are configured to intermesh with the third sun gear 238 and third ring gear 240, and the third carrier member 242 is coupled for common rotation with the second shaft 224.
[0040] The kinematic relationship of the fourth planetary gearset 212 is such that the fourth sun gear 250 is coupled to the input shaft 202 for common rotation therewith. The fourth ring gear 252 is coupled to the fifth shaft 246, and hence the second ring gear 230, for common rotation therewith. The fourth pinion gears 256 are configured to intermesh with the fourth sun gear 250 and the fourth ring gear 252. The fourth carrier member 254 is coupled to the output shaft 204 for common rotation therewith.
[0041] With regards to the kinematic coupling of the five torque-transmitting
mechanisms to the previously described shafts, the multiple speed transmission 200 of Fig. 2 provides that the first torque-transmitting mechanism 258 is arranged within the power flow between the fourth shaft 236 and the housing G of the transmission 200. in this manner, the first torque-transmitting mechanism 258 is configured to act as a brake. The second torque- transmitting mechanism 260 is arranged within the power flow between the input shaft 202
and the second shaft 224. Thus, the second torque-transmitting mechanism 260 is configured to act as a clutch. In this embodiment of the transmission 200 therefore one of the five torque-transmitting mechanisms is configured to act as a brake and the other four torque- transmitting mechanisms are configured to act as clutches.
[0042] The third torque-transmitting mechanism 262, for example, is arranged within the power flow between the input shaft 202 and the sixth shaft 248. The fourth torque- transmitting mechanism 264 is arranged within the power flow between the sixth shaft 248 and the output shaft 204. Moreover, the fifth torque-transmitting mechanism 266 is arranged •within the power flow between the third shaft 226 and the fourth shaft 236.
[0043] The kinematic couplings of the embodiment in Fig. 2 can further be described with respect to the selective engagement of the torque-transmitting mechanisms with respect to one or more components of the plurality of planetary gearsets. For example, in the transmission 200, the first torque-transmitting mechanism 258 is selectively engageable to couple the second carrier member 232, the third ring gear 238, and the fourth shaft 236 to the housing G of the transmission 200. The second torque-transmitting mechanism 260 is selectively engageable to couple the fourth sun gear 250 and the input shaft 202 to the second shaft 224, the first ring gear 21 , and the third carrier member 242.
[0044] The third torque-transmitting mechanism 262 is selectively engageable to couple the third ring gear 240 and the sixth shaft 248 to the input shaft 202 and fourth sun gear 250. The fourth torque-transmitting mechanism 264 is selectively engageable to couple the third ring gear 240 and the sixth shaft 248 to the fourth carrier member 256 and the output shaft 204. Lastly, the fifth torque-transmitting mechanism 266 is selectively engageable to couple the first sun gear 214, the second sung gear 228, and the third shaft 226 to the second carrier member 232, the third sun gear 238, and the fourth shaft 236.
[0045] As previously described, the aforementioned embodiment is capable of transmitting torque from a respective input shaft to a respective output shaft in at least eight forward torque ratios and one reverse torque ratio. Referring to Fig. 3, one example of a truth table is shown representing a state of engagement of various torque transmitting mechanisms in each of the available forward and reverse speeds or gear ratios of the transmission illustrated in Fig. 2. It is to be understood that Fig. 3 is only one example of any
number of truth tables possible for achieving at least eight forward ratios and one reverse ratio, and one skilled in the art is capable of configuring diameters, gear tooth counts, and gear configurations to achieve other ratios.
[0046] In the example of Fig. 3, the reverse ratio (Rev) can be achieved by the selective engagement of the torque-transmitting mechanisms as set forth in the table. As shown, the third torque-transmitting mechanism (C3) and the fifth torque-transmitting mechanism (C5) are selectively engaged to establish the reverse ratio. Thus, in transmission 200 of Fig. 2, the selective engagement of mechanisms 262 and 266 can establish the reverse ratio.
[0047] In neutral (Neu), none of the torque-transmitting mechanisms cany torque. One or more of the torque-transmitting mechanisms, however, may be engaged in neutral but not carrying torque. For example, the fifth torque-transmitting mechanism can be engaged in neutral, thereby resulting in the third torque-transmitting mechanism being disengaged between a shift between the one reverse ratio and neutral.
[0048] A first forward ratio (shown as 1 st) in the table of Fig. 3 is achieved by engaging two clutches. In Fig. 2, for example, the fourth torque-transmitting mechanism 264 and the fifth torque-transmitting mechanism 266 are engaged. Thus, when transitioning between neutral and the first forward range, the fifth torque-transmitting mechanism may already be engaged, and the fourth torque-transmitting mechanism is selectively engaged.
[0049] In a second or subsequent forward ratio, indicated as 2nd in Fig. 3, the first torque-transmitting mechanism and the fifth torque-transmitting mechanism are selectively engaged. Therefore, when transitioning between the first forward ratio and the second forward ratio, the fourth torque-transmitting mechanism is released and the first torque- transmitting mechanism is engaged.
[0050] In a third or subsequent forward ratio, indicated as 3rd forward ratio in Fig. 3, the first torque-transmitting mechanism and fourth torque-transmitting mechanism are engaged. To transition from the second forward ratio to the third forward ratio, for example, the fifth torque-transmitting mechanism is released and the fourth torque-transmitting mechanism is engaged.
[0051] In a fourth or the next subsequent forward ratio, indicated as 4th in Fig. 3, the first torque-transmitting mechanism and third torque-transmitting mechanism are engaged. Thus,
to transition from the third forward ratio and upshift to the fourth forward ratio, the fourth torque-transmitting mechanism is released and the third torque-transmitting mechanism is engaged.
[0052] In a fifth or the next subsequent forward ratio, indicated as 5th in Fig. 3, the second torque-transmitting mechanism and first torque-transmitting mechanism are selectively engaged. Thus, to transition from the fourth forward ratio and upshift to the fifth forward ratio, the third torque-transmitting mechanism is released and the second torque- transmitting mechanism is engaged.
[0053] In a sixth or the next subsequent forward ratio, indicated as 6th in Fig. 3, the previously engaged torque-transmitting mechanisms are both released and two different torque-transmitting mechanisms are engaged. Here, for example, the third torque- transmitting mechanism and fourth torque-transmitting mechanism are engaged. Thus, to transition from the fifth forward ratio and upshift to the sixth forward ratio, the first and second torque-transmitting mechanisms are released and the third and fourth torque- transmitting mechanisms are engaged.
[0054] In a seventh or the next subsequent forward ratio, indicated as 7th in Fig. 3, the second torque-transmitting mechanism and the fourth torque-transmitting mechanism are engaged. Thus, to transition from the sixth forward ratio and upshift to the seventh forward ratio, the third torque-transmitting mechanism is released and the second torque-transmitting mechanism is engaged.
[0055] In an eighth or the next subsequent forward ratio, indicated as 8th in Fig. 3, the second torque-transmitting mechanism and third torque-transmitting mechanism are engaged. Thus, to transition from the seventh forward ratio and upshift to the eighth forward ratio, the fourth torque-transmitting mechanism is released and the third torque-transmitting
mechanism is engaged.
[0056] The present disclosure contemplates that downshifts follow the reverse sequence of the corresponding upshift (as described above), and several power-on skip-shifts that are single-transition are possible (e.g. from 1st to 3rd or 3rd to 1st).
[0057] While exemplary embodiments incorporating the principles of the present disclosure have been disclosed hereinabove, the present disclosure is not limited to the
disclosed embodiments. Instead, this application is intended to cover any variations, uses, or adaptations of the disclosure using its general principles. Further, this application is intended to cover such departures from the present disclosure as come within known or customary practice in the art to which this disclosure pertains and which fall within the limits of the appended claims.
Claims
1. A multiple speed transmission, comprising:
an input member;
an output member;
first, second, third and fourth planetary gearsets each having first, second and third members;
a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets;
a first torque-transmitting mechanism selectively engageable to interconnect the second member of the second planetary gearset with a stationary member;
a second torque-transmitting mechanism selectively engageable to interconnect the first member of the fourth planetary gearset with the third member of the first planetary gearset and the second member of the third planetary gearset;
a third torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the first member of the fourth planetary gearset; a fourth torque-transmitting mechanism selectively engageable to interconnect the third member of the third planetary gearset with the second member of the fourth planetary gearset; and
a fifth torque-transmitting mechanism selectively engageable to interconnect the first member of the first planetary gearset and the first member of the second planetary gearset with the second member of the second planetary gearset and the first member of the third planetary gearset;
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.
2. The multiple speed transmission of claim 1 , wherein one member of the fourth planetary gearset is continuously interconnected with the input member and a different
member of the fourth planetary gearset is continuously interconnected with the output member.
3. The multiple speed transmission of claim 2, wherein the input member is
continuously interconnected with the first member of the fourth planetary gearset and the output member is continuously interconnected with the second member of the fourth planetary gearset.
4. The multiple speed transmission of claim 1, wherein the plurality of interconnecting members includes a first interconnecting member continuously interconnecting the second member of the first planetary gearset with the stationary member.
5. The multiple speed transmission of claim 1 , wherein the plurality of interconnecting members includes a second interconnecting member continuously interconnecting the third member of the first planetary gearset with the second member of the third planetary gearset.
6. The multiple speed transmission of claim 1 , wherein the plurality of interconnecting members includes a third interconnecting member continuously interconnecting the first member of the first planetary gearset to the first member of the second planetary gearset.
7. The multiple speed transmission of claim 1, wherein the plurality of interconnecting members includes a fourth interconnecting member continuously interconnecting the second member of the second planetary gearset with the first member of the third planetary gearset.
8. The multiple speed transmission of claim 1, wherein the plurality of interconnecting members includes a fifth interconnecting member continuously interconnecting the third member of the second planetary gearset with the third member of the fourth planetary gearset.
9. The multiple speed transmission of claim 1 , wherein the plurality of interconnecting
members includes a sixth interconnecting member continuously connected to the third member of the third planetary gearset.
10. The multiple speed transmission of claim 1 , wherein the first torque-transmitting mechanism is selectively engageable to interconnect the first member of the third planetary gearset with the stationary member.
1 1. A multiple speed transmission, comprising:
an input member;
an output member;
first, second, third and fourth planetary gearsets each having a sun gear, a ring gear, and a carrier member;
a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets;
a first torque-transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gearset and the sun gear of the third planetary gearset with a stationary member;
a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the fourth planetary gearset with the ring gear of the first planetary gearset and the carrier member of the third planetary gearset;
a third torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the sun gear of the fourth planetary gearset;
a fourth torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the carrier member of the fourth planetary gearset; and
a fifth torque-transmitting mechanism selectively engageable to interconnect the sun gear of the first planetary gearset and the sun gear of the second planetary gearset with the carrier member of the second planetary gearset and the sun gear of the third planetary gearset;
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.
12. The multiple speed transmission of claim 1 1 , wherein one member of the fourth planetary gearset is continuously interconnected with the input member and a different member of the fourth planetary gearset is continuously interconnected with the output member.
13. The multiple speed transmission of claim 12, wherein the input member is continuously interconnected with the sun gear of the fourth planetary gearset and the output member is continuously interconnected with the carrier member of the fourth planetary gearset.
14. The multiple speed transmission of claim 11, wherein the plurality of interconnecting members includes a first interconnecting member continuously interconnecting the carrier member of the first planetary gearset with the stationary member.
15. The multiple speed transmission of claim 11 , wherein the plurality of interconnecting members includes a second interconnecting member continuously interconnecting the ring gear of the first planetary gearset with the carrier member of the third planetary gearset.
16. The multiple speed transmission of claim 11 , wherein the plurality of interconnecting members includes a third interconnecting member continuously interconnecting the sun gear of the first planetary gearset to the sun gear of the second planetary gearset. ί 7. The multiple speed transmission of claim 11 , wherein the plurality of mterconnecting members includes a fourth interconnecting member continuously interconnecting the carrier member of the second planetary gearset with the sun gear of the third planetary gearset.
18. The multiple speed transmission of claim 1 1 , wherein the plurality of interconnecting members includes a fifth interconnecting member continuously interconnecting the ring gear of the second planetary gearset with the ring gear of the fourth planetary gearset.
19. The multiple speed transmission of claim 11 , wherein the plurality of interconnecting members includes a sixth interconnecting member continuously connected to the ring gear of the third planetary gearset.
20. A multiple speed transmission, comprising:
an input member;
an output member;
first, second, third and fourth planetary gearsets each having a sun gear, a ring gear, and a carrier member;
a plurality of interconnecting members each connected between at least one of the first, second, third, and fourth planetary gearsets and at least another of the first, second, third, and fourth planetary gearsets;
a first torque-transmitting mechanism selectively engageable to interconnect the carrier member of the second planetary gearset and the sun gear of the third planetary gearset with a stationary member;
a second torque-transmitting mechanism selectively engageable to interconnect the sun gear of the fourth planetary gearset with the ring gear of the first planetary gearset and the carrier member of the third planetary gearset;
a third torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the sun gear of the fourth planetary gearset;
a fourth torque-transmitting mechanism selectively engageable to interconnect the ring gear of the third planetary gearset with the carrier member of the fourth planetary gearset; and
a fifth torque-transmitting mechanism selectively engageable to interconnect the sun gear of the first planetary gearset and the sun gear of the second planetary gearset with the
carrier member of the second planetary gearset and the sun gear of the third planetary gearset;
a first interconnecting member of the plurality of interconnecting members continuously interconnecting the carrier member of the first planetary gearset with the stationary member;
a second interconnecting member of the plurality of interconnecting members continuously interconnecting the ring gear of the first planetary gearset with the carrier member of the third planetary gearset;
a third interconnecting member of the plurality of interconnecting members continuously interconnecting the sun gear of the first planetary gearset to the sun gear of the second planetary gearset;
a fourth interconnecting member of the plurality of interconnecting members continuously interconnecting the carrier member of the second planetary gearset with the sun gear of the third planetary gearset;
a fifth interconnecting member of the plurality of interconnecting members continuously interconnecting the ring gear of the second planetary gearset with the ring gear of the fourth planetary gearset;
a sixth interconnecting member of the plurality of interconnecting members continuously connected to the ring gear of the third planetary gearset;
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.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15855308.1A EP3212964B1 (en) | 2014-10-27 | 2015-10-22 | Multi-speed transmission |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201462068979P | 2014-10-27 | 2014-10-27 | |
US62/068,979 | 2014-10-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016069361A1 true WO2016069361A1 (en) | 2016-05-06 |
Family
ID=55791644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2015/056825 WO2016069361A1 (en) | 2014-10-27 | 2015-10-22 | Multi-speed transmission |
Country Status (3)
Country | Link |
---|---|
US (1) | US9726256B2 (en) |
EP (1) | EP3212964B1 (en) |
WO (1) | WO2016069361A1 (en) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9803725B2 (en) * | 2015-07-13 | 2017-10-31 | Allison Transmission, Inc | Multi-speed transmission |
US10281030B2 (en) | 2016-07-27 | 2019-05-07 | Allison Transmission, Inc. | Manual shifting control system and method for multi-speed automatic transmission |
KR101896330B1 (en) * | 2016-09-12 | 2018-09-07 | 현대자동차 주식회사 | Planetary gear train of automatic transmission for vehicles |
US10260599B2 (en) | 2016-09-28 | 2019-04-16 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10302173B2 (en) | 2016-09-28 | 2019-05-28 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10072735B2 (en) | 2016-09-28 | 2018-09-11 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10473190B2 (en) | 2016-09-28 | 2019-11-12 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10156283B2 (en) | 2016-09-28 | 2018-12-18 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US9933045B1 (en) | 2016-09-28 | 2018-04-03 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10364867B2 (en) | 2016-09-28 | 2019-07-30 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10323722B2 (en) | 2016-09-28 | 2019-06-18 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10060511B2 (en) | 2016-09-28 | 2018-08-28 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10174814B2 (en) * | 2016-09-28 | 2019-01-08 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10161484B2 (en) | 2016-09-28 | 2018-12-25 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10316940B2 (en) | 2016-09-28 | 2019-06-11 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10533644B2 (en) | 2016-09-28 | 2020-01-14 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10072736B2 (en) | 2016-09-28 | 2018-09-11 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10060512B2 (en) | 2016-09-28 | 2018-08-28 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10234001B2 (en) | 2016-09-28 | 2019-03-19 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10451147B2 (en) | 2016-09-28 | 2019-10-22 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10161486B2 (en) | 2016-09-28 | 2018-12-25 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US9869377B1 (en) | 2016-09-28 | 2018-01-16 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10323723B2 (en) | 2016-09-28 | 2019-06-18 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US9927008B1 (en) | 2016-09-28 | 2018-03-27 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10253850B2 (en) | 2016-09-28 | 2019-04-09 | Allison Transmission, Inc. | Multi-speed planetary transmission |
US10040456B2 (en) | 2016-11-18 | 2018-08-07 | Allison Transmission, Inc. | System and method for hill climbing gear selection |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070111843A1 (en) * | 2003-04-07 | 2007-05-17 | Peter Ziemer | Multi-stage automatic transmission |
JP2011106547A (en) * | 2009-11-16 | 2011-06-02 | Honda Motor Co Ltd | Automatic transmission |
US20110251014A1 (en) * | 2008-11-03 | 2011-10-13 | Mirko Leesch | Transmission unit |
US20120149527A1 (en) * | 2009-08-20 | 2012-06-14 | Zf Friedrichshafen Ag | Multi-ratio transmission |
US20120309580A1 (en) * | 2011-06-01 | 2012-12-06 | Baldwin Reid A | Automatic Transmission |
Family Cites Families (193)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100957139B1 (en) | 2007-06-12 | 2010-05-11 | 현대자동차주식회사 | Power train of automatic transmission |
US5435153A (en) | 1994-03-16 | 1995-07-25 | Eaton Corporation | Receiver/drier |
US6176803B1 (en) | 1999-09-28 | 2001-01-23 | Caterpillar Inc. | Transmission assembly with four planetary gear sets providing nine forward and one reverse gear ratio |
DE19949507B4 (en) * | 1999-10-14 | 2014-10-23 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE10115985A1 (en) | 2001-03-30 | 2002-10-10 | Zahnradfabrik Friedrichshafen | Multi-speed transmission |
JP3789453B2 (en) | 2001-05-30 | 2006-06-21 | ジヤトコ株式会社 | Gear transmission for automatic transmission |
DE10315313A1 (en) | 2003-04-04 | 2005-01-20 | Zf Friedrichshafen Ag | Transmission, in particular automated power-split multi-speed transmission |
JP4453297B2 (en) | 2003-05-27 | 2010-04-21 | トヨタ自動車株式会社 | Planetary gear type multi-stage transmission for vehicles |
US6955627B2 (en) | 2004-03-10 | 2005-10-18 | Ford Global Technologies, Llc | Multi-speed transmission and integrated drive transfer mechanism |
US7226381B2 (en) | 2005-03-03 | 2007-06-05 | General Motors Corporation | Nine-speed transmissions with four planetary gear sets |
US7909729B2 (en) | 2005-10-07 | 2011-03-22 | Honda Motor Co., Ltd. | Control unit for an electric oil pump |
DE102006006639A1 (en) | 2006-02-14 | 2007-08-30 | Zf Friedrichshafen Ag | Automatic transmission for a motor vehicle comprises a drive shaft and a driven shaft arranged in a housing with planetary sets and switching elements |
DE102006006637B4 (en) | 2006-02-14 | 2015-02-19 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102006006636A1 (en) | 2006-02-14 | 2007-09-06 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102006006641A1 (en) | 2006-02-14 | 2007-08-30 | Zf Friedrichshafen Ag | Multi-step gear for planetary gear e.g. automatic gearbox for motor vehicle, has four planetary trains, seven rotational shafts and six shift elements, comprising brakes and clutches |
KR100793883B1 (en) | 2006-07-20 | 2008-01-15 | 현대자동차주식회사 | Power train for automatic transmission |
US7686730B2 (en) | 2006-11-09 | 2010-03-30 | Ford Global Technologies, Llc | Multiple speed automatic transmission |
KR100887958B1 (en) | 2006-12-13 | 2009-03-09 | 현대자동차주식회사 | Power train of automatic transmission |
US7695394B2 (en) * | 2007-01-31 | 2010-04-13 | Gm Global Technology Operations, Inc. | Multi-speed transmission |
US7909726B2 (en) | 2007-02-08 | 2011-03-22 | GM Global Technology Operations LLC | Multi-speed transmission |
US7951039B2 (en) * | 2007-03-30 | 2011-05-31 | GM Global Technology Operations LLC | Eight speed automatic transmission |
US7704181B2 (en) | 2007-04-19 | 2010-04-27 | Gm Global Technology Operations, Inc. | Multi-speed transmission |
US7691024B2 (en) | 2007-06-04 | 2010-04-06 | Gm Global Technology Operations, Inc. | 10-speed transmission |
US7731625B2 (en) | 2007-07-09 | 2010-06-08 | Gm Global Technology Operations, Inc. | 9-speed transmission |
US7695398B2 (en) | 2007-07-09 | 2010-04-13 | Gm Global Technology Operations, Inc. | 9-speed transmission |
US7691022B2 (en) | 2007-07-09 | 2010-04-06 | Gm Global Technology Operations, Inc. | 9-speed transmission |
US7651431B2 (en) | 2007-07-09 | 2010-01-26 | Gm Global Technology Operations, Inc. | 10-speed transmission |
US7771306B2 (en) | 2007-07-11 | 2010-08-10 | Gm Global Technology Operations, Inc. | 9-speed transmission |
US8057349B2 (en) | 2007-07-12 | 2011-11-15 | GM Global Technology Operations LLC | Multi-speed transmission |
US7887454B2 (en) | 2007-07-13 | 2011-02-15 | GM Global Technology Operations LLC | Multi-speed transmission |
US7753820B2 (en) | 2007-07-13 | 2010-07-13 | Gm Global Technology Operations, Inc. | Multi-speed transmission |
US7988586B2 (en) | 2007-07-13 | 2011-08-02 | GM Global Technology Operations LLC | Multi-speed transmission |
US7722496B2 (en) | 2007-07-31 | 2010-05-25 | Gm Global Technology Operations, Inc. | 10-speed transmission |
US7736263B2 (en) | 2007-08-15 | 2010-06-15 | Gm Global Technology Operations, Inc. | 9-speed transmission |
KR100907053B1 (en) | 2007-08-16 | 2009-07-09 | 현대자동차주식회사 | Gear train in an automatic transmission for vehicles |
US8202190B2 (en) | 2007-08-24 | 2012-06-19 | GM Global Technology Operations LLC | Multi-speed transmission |
US8690722B2 (en) | 2007-08-24 | 2014-04-08 | GM Global Technology Operations LLC | Multi-speed transmission |
JP2010540429A (en) | 2007-09-24 | 2010-12-24 | アクテリオン ファーマシューティカルズ リミテッド | Pyrrolidines and piperidines as orexin receptor antagonists |
US7914414B2 (en) | 2007-11-06 | 2011-03-29 | GM Global Technology Operations LLC | Multi-speed transmission |
US8007398B2 (en) | 2007-11-06 | 2011-08-30 | GM Global Technology Operations LLC | Multi-speed transmission having at least ten speed ratios |
US7993237B2 (en) | 2007-11-09 | 2011-08-09 | GM Global Technology Operations LLC | Transmission having ten or more speeds |
DE102007055808A1 (en) | 2007-12-14 | 2009-06-18 | Zf Friedrichshafen Ag | 10-speed automatic transmission |
US7993238B2 (en) | 2008-01-07 | 2011-08-09 | GM Global Technology Operations LLC | Multi-speed transmission |
US7980988B2 (en) | 2008-01-25 | 2011-07-19 | GM Global Technology Operations LLC | Multi-speed transmission |
US8007395B2 (en) | 2008-01-25 | 2011-08-30 | GM Global Technology Operations LLC | Ten-speed transmission |
US8007394B2 (en) | 2008-01-25 | 2011-08-30 | GM Global Technology Operations LLC | Ten-speed transmission |
US8047951B2 (en) | 2008-01-25 | 2011-11-01 | GM Global Technology Operations LLC | Ten-speed transmission |
US7946948B2 (en) | 2008-01-31 | 2011-05-24 | GM Global Technology Operations LLC | 9-speed transmission |
US7959531B2 (en) | 2008-02-18 | 2011-06-14 | GM Global Technology Operations LLC | Multi-speed transmission |
US8038565B2 (en) | 2008-02-18 | 2011-10-18 | GM Global Technology Operations LLC | Multi-speed transmission |
US8157697B2 (en) | 2008-02-21 | 2012-04-17 | GM Global Technology Operations LLC | Ten-speed transmission |
US8001662B1 (en) | 2008-02-21 | 2011-08-23 | Gary Guber | Clip device |
DE102008000429A1 (en) | 2008-02-28 | 2009-09-03 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102008000428A1 (en) | 2008-02-28 | 2009-09-03 | Zf Friedrichshafen Ag | Multi-speed transmission |
US7841960B2 (en) | 2008-03-18 | 2010-11-30 | Ford Global Technologies | Eight speed planetary kinematic arrangement with two rotating clutches |
KR100903341B1 (en) | 2008-05-06 | 2009-06-18 | 현대자동차주식회사 | Gear train of automatic transmission for vehicles |
US7556528B1 (en) | 2008-08-08 | 2009-07-07 | Lotes Co., Ltd. | Electrical connection apparatus |
DE102008041195B4 (en) | 2008-08-13 | 2017-11-30 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102008041207B4 (en) | 2008-08-13 | 2018-08-23 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102008041205A1 (en) | 2008-08-13 | 2010-02-18 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102008041192B4 (en) | 2008-08-13 | 2016-04-07 | Zf Friedrichshafen Ag | Multi-speed transmission |
US8979701B2 (en) | 2008-09-15 | 2015-03-17 | Ford Global Technologies, Llc | Multiple speed transmission |
US8052567B2 (en) | 2008-12-04 | 2011-11-08 | GM Global Technology Operations LLC | Multi-speed transmissions |
KR101072319B1 (en) | 2009-01-19 | 2011-10-11 | 현대자동차주식회사 | Gear train of automatic transmission for vehicles |
US9615748B2 (en) | 2009-01-20 | 2017-04-11 | The General Hospital Corporation | Endoscopic biopsy apparatus, system and method |
US8002662B2 (en) | 2009-01-26 | 2011-08-23 | GM Global Technology Operations LLC | Multi-speed transmissions |
US20100192012A1 (en) | 2009-01-26 | 2010-07-29 | Sun Microsystems, Inc. | Testing multi-core processors in a system |
US8187139B2 (en) * | 2009-02-06 | 2012-05-29 | Ford Global Technologies, Llc | Planetary kinematic arrangement suitable for idle engine stop |
US8047954B2 (en) | 2009-02-13 | 2011-11-01 | GM Global Technology Operations LLC | Multi-speed transmission |
US8038566B2 (en) | 2009-02-13 | 2011-10-18 | GM Global Technology Operations LLC | Multi-speed transmission |
US7998013B2 (en) | 2009-02-13 | 2011-08-16 | GM Global Technology Operations LLC | Multi-speed transmission |
US8128527B2 (en) | 2009-02-13 | 2012-03-06 | GM Global Technology Operations LLC | Multi-speed transmission |
US8033948B2 (en) | 2009-02-13 | 2011-10-11 | GM Global Technology Operations LLC | Multi-speed transmission |
US8177675B2 (en) | 2009-02-13 | 2012-05-15 | GM Global Technology Operations LLC | Multi-speed transmission |
US8043192B2 (en) | 2009-02-13 | 2011-10-25 | GM Global Technology Operations LLC | Multi-speed transmission |
US7771305B1 (en) | 2009-02-16 | 2010-08-10 | Gm Global Technology Operations, Inc. | Ten-speed transmission |
US8052566B2 (en) | 2009-02-16 | 2011-11-08 | GM Global Technology Operations LLC | Multi-speed transmissions |
US8047950B2 (en) | 2009-02-17 | 2011-11-01 | GM Global Technology Operations LLC | Multi-speed transmission |
US7985159B2 (en) | 2009-02-17 | 2011-07-26 | GM Global Technology Operations LLC | Multi-speed transmission |
US8025602B2 (en) | 2009-02-17 | 2011-09-27 | GM Global Technology Operations LLC | Multi-speed transmission |
US8043189B2 (en) | 2009-02-17 | 2011-10-25 | GM Global Technology Operations LLC | Multi-speed transmission |
US8016713B2 (en) | 2009-02-19 | 2011-09-13 | GM Global Technology Operations LLC | Multi-speed transmissions |
US8079932B2 (en) | 2009-02-24 | 2011-12-20 | GM Global Technology Operations LLC | Multi-speed transmission |
US7993235B2 (en) | 2009-02-24 | 2011-08-09 | GM Global Technology Operations LLC | Multi-speed transmission |
US8070646B2 (en) | 2009-02-24 | 2011-12-06 | GM Global Technology Operations LLC | Multi-speed transmission |
US8096915B2 (en) | 2009-02-24 | 2012-01-17 | GM Global Technology Operations LLC | Multi-speed transmission |
DE102009001253B3 (en) | 2009-03-02 | 2010-06-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
US7828690B2 (en) | 2009-03-04 | 2010-11-09 | Gm Global Technology Operations, Inc. | Ten-speed transmissions |
US8113982B2 (en) * | 2009-03-30 | 2012-02-14 | Ford Global Technologies, Llc | Eight speed planetary kinematic arrangement |
KR101028544B1 (en) | 2009-06-30 | 2011-04-11 | 현대자동차주식회사 | Gear train of automatic transmission for vehicles |
DE102009028716B4 (en) | 2009-08-20 | 2022-02-17 | Zf Friedrichshafen Ag | multi-speed gearbox |
DE102009028709A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028668A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028681A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028705B4 (en) | 2009-08-20 | 2021-07-01 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028675A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028672A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028710B4 (en) | 2009-08-20 | 2019-08-29 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028669A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028713A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028714A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028677A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028671A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028674A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028703A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028720A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102009028715B4 (en) | 2009-08-20 | 2022-02-17 | Zf Friedrichshafen Ag | multi-speed gearbox |
DE102009028708A1 (en) | 2009-08-20 | 2011-02-24 | Zf Friedrichshafen Ag | Multi-speed transmission |
US8142324B2 (en) | 2009-11-06 | 2012-03-27 | GM Global Technology Operations LLC | Transmission having at least eight speeds |
US8187137B2 (en) | 2009-11-06 | 2012-05-29 | GM Global Technology Operations LLC | Transmission having at least eight speeds |
US8105198B2 (en) | 2009-11-06 | 2012-01-31 | GM Global Technology Operations LLC | Transmission having at least eight speeds |
US8480533B2 (en) | 2009-11-25 | 2013-07-09 | Caterpillar Inc. | Multi-speed transmission |
US8100808B2 (en) | 2010-01-15 | 2012-01-24 | GM Global Technology Operations LLC | Multi-speed transmission having four planetary gear sets for producing at least eight gear speeds |
US8251856B2 (en) | 2010-01-15 | 2012-08-28 | GM Global Technology Operations LLC | Multi-speed transmission having four planetary gear sets for producing at least eight gear speeds |
US8303453B2 (en) | 2010-01-15 | 2012-11-06 | GM Global Technology Operations LLC | Multi-speed transmission having four planetary gear sets for producing at least eight gear speeds |
KR101063505B1 (en) | 2010-03-31 | 2011-09-07 | 현대자동차주식회사 | Gear train of automatic transmission for vehicles |
US8343005B2 (en) | 2010-04-15 | 2013-01-01 | GM Global Technology Operations LLC | Multi-speed transmission having four planetary gear sets |
KR101673327B1 (en) | 2010-05-31 | 2016-11-08 | 현대자동차 주식회사 | Gear train of automatic transmission for vehicles |
KR101090813B1 (en) | 2010-06-30 | 2011-12-08 | 기아자동차주식회사 | Gear train of automatic transmission for vehicles |
US8277355B2 (en) | 2010-07-07 | 2012-10-02 | GM Global Technology Operations LLC | Multi-speed transmission having stacked planetary gear sets |
DE102010039865A1 (en) | 2010-08-27 | 2012-03-01 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102010039864A1 (en) | 2010-08-27 | 2012-03-01 | Zf Friedrichshafen Ag | Multi-speed transmission |
DE102010039863B4 (en) | 2010-08-27 | 2022-01-05 | Zf Friedrichshafen Ag | Multi-speed transmission |
US8512196B2 (en) | 2010-09-13 | 2013-08-20 | GM Global Technology Operations LLC | Multi-speed transmission |
US8801565B2 (en) | 2010-09-13 | 2014-08-12 | Gm Global Technology Operations, Llc | Multi-speed transmission having stacked planetary gear sets |
US8460151B2 (en) | 2010-09-17 | 2013-06-11 | GM Global Technology Operations LLC | Multi-speed transmission having automatic and manual modes |
US8425367B2 (en) | 2010-10-05 | 2013-04-23 | GM Global Technology Operations LLC | Transmission having at least ten speeds |
US8366580B2 (en) | 2010-10-05 | 2013-02-05 | GM Global Technology Operations LLC | Transmission having at least ten speeds |
US8425368B2 (en) | 2010-10-11 | 2013-04-23 | GM Global Technology Operations LLC | Transmission having at least ten speeds |
JP5276078B2 (en) | 2010-11-02 | 2013-08-28 | 本田技研工業株式会社 | Automatic transmission |
JP5276077B2 (en) | 2010-11-02 | 2013-08-28 | 本田技研工業株式会社 | Automatic transmission |
JP5276079B2 (en) | 2010-11-04 | 2013-08-28 | 本田技研工業株式会社 | Automatic transmission |
DE102010052001B4 (en) | 2010-11-19 | 2019-09-26 | Bayerische Motoren Werke Aktiengesellschaft | 9-speed Planetenradautomatikgetriebe |
US8425369B2 (en) | 2010-12-13 | 2013-04-23 | GM Global Technology Operations LLC | Multi-speed transmission |
US8333675B2 (en) * | 2010-12-14 | 2012-12-18 | GM Global Technology Operations LLC | Multi-speed transmission |
DE102010063491A1 (en) | 2010-12-20 | 2012-06-21 | Zf Friedrichshafen Ag | Multi-speed transmission in planetary construction |
DE102010063632A1 (en) | 2010-12-21 | 2012-06-21 | Zf Friedrichshafen Ag | Multi-speed transmission in planetary construction |
DE102010063634A1 (en) | 2010-12-21 | 2012-06-21 | Zf Friedrichshafen Ag | Multi-speed transmission in planetary construction |
US8409047B2 (en) | 2010-12-22 | 2013-04-02 | GM Global Technology Operations LLC | Multi-speed transmission |
US8529395B2 (en) | 2011-01-06 | 2013-09-10 | GM Global Technology Operations LLC | Multi-speed transmission |
US8496558B2 (en) | 2011-01-06 | 2013-07-30 | GM Global Technology Operations LLC | Nine speed automatic transmission |
US8591364B2 (en) | 2011-01-06 | 2013-11-26 | GM Global Technology Operations LLC | Planetary transmission with launch clutch |
US8496556B2 (en) | 2011-01-10 | 2013-07-30 | GM Global Technology Operations LLC | Multi-speed transmission |
US8353801B2 (en) | 2011-01-10 | 2013-01-15 | GM Global Technology Operations LLC | Multi-speed transmission |
US8808135B2 (en) | 2011-01-12 | 2014-08-19 | Gm Global Technology Operations, Llc | Multiple speed transmission with a pump assisted launch device |
US8343007B2 (en) | 2011-01-31 | 2013-01-01 | GM Global Technology Operations LLC | Compact multi-speed automatic transmission |
US8932174B2 (en) | 2011-02-17 | 2015-01-13 | Gm Global Technology Operations, Llc | Clutch and gear arrangement for a rear wheel drive vehicle |
US8721488B2 (en) | 2011-02-17 | 2014-05-13 | Gm Global Technology Operations | Multi-speed transmission |
US8636618B2 (en) | 2011-02-17 | 2014-01-28 | GM Global Technology Operations LLC | Clutch and gear arrangement for a front wheel drive vehicle |
US8602934B2 (en) | 2011-02-17 | 2013-12-10 | GM Global Technology Operations LLC | Multi-speed transmission with an integrated electric motor |
US8187130B1 (en) | 2011-02-17 | 2012-05-29 | GM Global Technology Operations LLC | Multi-speed transmission with integrated electric motor |
US8556766B2 (en) | 2011-02-17 | 2013-10-15 | GM Global Technology Operations LLC | Multi-speed transmission |
US8944949B2 (en) | 2011-02-17 | 2015-02-03 | Gm Global Technology Operations, Llc | Multi-speed transmission with integrated electric motor |
US8251857B1 (en) | 2011-02-17 | 2012-08-28 | GM Global Technology Operations LLC | Multi-speed transmission |
US8758189B2 (en) | 2011-02-17 | 2014-06-24 | Gm Global Technology Operations, Llc | Multiple speed transmission having a band brake |
US8858386B2 (en) | 2011-03-07 | 2014-10-14 | Gm Global Technology Operations, Llc | Multi-speed transmission |
US8371982B2 (en) | 2011-05-20 | 2013-02-12 | GM Global Technology Operations LLC | Multi-speed transmission with at least one selectable one-way clutch |
US8523729B2 (en) | 2011-05-20 | 2013-09-03 | GM Global Technology Operations LLC | Multi-speed transmission |
KR20120132021A (en) | 2011-05-27 | 2012-12-05 | 현대자동차주식회사 | Planetary gear train of automatic transmission for vehicles |
KR101220387B1 (en) | 2011-06-22 | 2013-01-09 | 현대자동차주식회사 | Planetary gear train of automatic transmission for vehicles |
US8961355B2 (en) | 2011-07-21 | 2015-02-24 | Gm Global Technology Operations, Llc | Method for controlling a multi-speed transmission having four planetary gear sets for producing at least nine gear speeds |
KR101592368B1 (en) | 2011-07-27 | 2016-02-11 | 현대자동차주식회사 | Planetary gear train of automatic transmission for vehicles |
US8894535B2 (en) | 2011-08-10 | 2014-11-25 | Gm Global Technology Operations, Llc | Multi-speed transmission |
US8430784B2 (en) | 2011-08-17 | 2013-04-30 | GM Global Technology Operations LLC | Multi-speed transmission having four planetary gear sets |
US8734285B2 (en) | 2011-08-31 | 2014-05-27 | Gm Global Technology Operations | Transmission with dual clutch actuation assembly |
US8651994B2 (en) | 2011-09-30 | 2014-02-18 | Arvinmeritor Technology, Llc | Drive axle assembly and disengagement system |
US8506442B2 (en) | 2011-10-03 | 2013-08-13 | GM Global Technology Operations LLC | Multi-speed transmission |
US8678972B2 (en) | 2011-10-03 | 2014-03-25 | GM Global Technology Operations LLC | Multi-speed transmission |
KR101283890B1 (en) | 2011-12-07 | 2013-07-08 | 현대자동차주식회사 | Planetary gear train of automatic transmission for vehicles |
KR101294075B1 (en) | 2011-12-08 | 2013-08-07 | 현대자동차주식회사 | Planetary gear train of automatic transmission for vehicles |
US8581753B2 (en) | 2012-01-19 | 2013-11-12 | Sharp Laboratories Of America, Inc. | Lossless coding technique for CABAC in HEVC |
US8777797B2 (en) | 2012-02-02 | 2014-07-15 | Gm Global Technology Operations, Llc. | Multi-speed transmission |
US8758187B2 (en) | 2012-02-06 | 2014-06-24 | Gm Global Technology Operations, Llc | Multi-speed transmission |
US8888648B2 (en) | 2012-02-10 | 2014-11-18 | Gm Global Technology Operations, Llc | Multi-speed transmission |
US8636617B2 (en) | 2012-02-24 | 2014-01-28 | GM Global Technology Operations LLC | Multi-speed transmission |
US8915819B2 (en) | 2012-03-05 | 2014-12-23 | Gm Global Technology Operations, Llc | Multi-speed planetary gear set transmission |
US8734286B2 (en) | 2012-03-12 | 2014-05-27 | GM Global Technology Operations LLC | Multi-speed planetary gear set transmission |
DE102012207018B4 (en) | 2012-04-27 | 2022-06-02 | Zf Friedrichshafen Ag | Planetary multi-stage gearbox |
US8821336B2 (en) | 2012-05-16 | 2014-09-02 | Gm Global Technology Operations, Llc | Multi-speed transmission and backing plate |
US8545362B1 (en) | 2012-05-25 | 2013-10-01 | Ford Global Technologies, Llc | Multi-speed transmission |
US8591377B1 (en) | 2012-05-29 | 2013-11-26 | Ford Global Technologies, Llc | Multi-speed automatic transmission |
US8574113B1 (en) | 2012-08-03 | 2013-11-05 | Ford Global Technologies, Llc | Multiple speed transmission |
US8777798B2 (en) | 2012-10-12 | 2014-07-15 | Gm Global Technology Operations, Llc. | Ten-speed transmission |
US8920281B2 (en) | 2012-11-07 | 2014-12-30 | Gm Global Technology Operations, Llc | Multi-speed transmission |
US8529396B1 (en) | 2013-01-09 | 2013-09-10 | Toyota Motor Engineering & Manufacturing North America, Inc. | Multi-speed automatic transmission |
US8617022B1 (en) | 2013-01-09 | 2013-12-31 | Toyota Motor Engineering & Manufacturing North America, Inc. | Multi-speed automatic transmission |
US8939863B2 (en) | 2013-03-01 | 2015-01-27 | Gm Global Technology Operations, Llc | Multi-speed transmission with a series disconnect clutch |
US8702555B1 (en) | 2013-03-01 | 2014-04-22 | GM Global Technology Operations LLC | Multi-speed transmission with a selectable one-way clutch |
US8968144B2 (en) | 2013-03-28 | 2015-03-03 | Ford Global Technologies, Llc | Multi-speed transmission |
US8968142B2 (en) | 2013-05-20 | 2015-03-03 | Ford Global Technologies, Llc | Multi-speed transmission |
US8951160B2 (en) | 2013-06-07 | 2015-02-10 | Toyota Motor Engineering & Manufacturing North America, Inc. | Multi-speed automatic transmission |
KR101448789B1 (en) | 2013-06-14 | 2014-10-08 | 현대자동차 주식회사 | Planetary gear train of automatic transmission for vehicles |
US8961356B2 (en) | 2013-06-19 | 2015-02-24 | Gm Global Technology Operations, Llc | Ten speed transmission with latching mechanisms |
-
2015
- 2015-10-22 WO PCT/US2015/056825 patent/WO2016069361A1/en active Application Filing
- 2015-10-22 US US14/919,851 patent/US9726256B2/en active Active
- 2015-10-22 EP EP15855308.1A patent/EP3212964B1/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20070111843A1 (en) * | 2003-04-07 | 2007-05-17 | Peter Ziemer | Multi-stage automatic transmission |
US20110251014A1 (en) * | 2008-11-03 | 2011-10-13 | Mirko Leesch | Transmission unit |
US20120149527A1 (en) * | 2009-08-20 | 2012-06-14 | Zf Friedrichshafen Ag | Multi-ratio transmission |
JP2011106547A (en) * | 2009-11-16 | 2011-06-02 | Honda Motor Co Ltd | Automatic transmission |
US20120309580A1 (en) * | 2011-06-01 | 2012-12-06 | Baldwin Reid A | Automatic Transmission |
Also Published As
Publication number | Publication date |
---|---|
US20160116027A1 (en) | 2016-04-28 |
EP3212964A4 (en) | 2018-08-15 |
EP3212964A1 (en) | 2017-09-06 |
US9726256B2 (en) | 2017-08-08 |
EP3212964B1 (en) | 2021-01-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US10024394B2 (en) | Multi-speed transmission | |
US9518638B2 (en) | Multi-speed transmission | |
US9726256B2 (en) | Multi-speed transmission | |
US9631707B2 (en) | Multi-speed transmission | |
US9512905B2 (en) | Multi-speed transmission | |
US9541168B2 (en) | Multi-speed transmission | |
US10634222B2 (en) | Multi-speed transmission | |
US9964186B2 (en) | Multi-speed transmission | |
US10400866B2 (en) | Multi-speed transmission | |
US10132388B2 (en) | Multi-speed transmission | |
US9470293B1 (en) | Multi-speed transmission | |
EP3286453A1 (en) | Multi-speed transmission | |
WO2016024951A1 (en) | Multi-speed transmission |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 15855308 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2015855308 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2015855308 Country of ref document: EP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |