| Entries |
| Document | Title | Date |
|---|
| 20080196526 | Multi Speed Transmission Having A Countershaft Gearing Arrangement - A transmission is provided having a dual clutch, to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a first and second countershaft. A transfer gear set transfers torque from the countershaft to an output shaft. The output shaft is connected to a final drive unit that has a final drive unit output shaft that is transverse to an input member connected at one end to a torque converter and at the other end to the dual clutch. | 08-21-2008 |
| 20080202265 | Multi-Speed Transmission With Countershaft Gearing - A transmission is provided having a dual clutch and a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gears sets having gears that are selectively connectable to at least two countershafts. Moreover, one of the gears of the plurality of co-planar gears sets that provides a reverse gear ratio is selectively connectable to a first countershaft and is in mesh with only one other gear of the plurality of co-planar gears sets that is selectively engagable to a second countershaft. | 08-28-2008 |
| 20080202266 | Multi-Speed Transmission With Countershaft Gearing - A transmission is provided having a dual clutch, to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a plurality of countershafts. At least one transfer gear set transfers torque from the counter shafts to an output shaft. The output shaft is connected to a final drive unit that has a final drive unit output shaft that is transverse to an input member connected at one end to a torque converter and at the other end to the dual clutch. | 08-28-2008 |
| 20080202267 | Multi-Speed Transmission With Countershaft Gearing - A transmission is provided having a dual clutch, to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a plurality of countershafts. At least one transfer gear set transfers torque from the counter shafts to an output shaft. The output shaft is connected to a final drive unit that has a final drive unit output shaft that is transverse to an input member connected at one end to a torque converter and at the other end to the dual clutch. | 08-28-2008 |
| 20080202268 | Multi-Speed Transmission With A Countershaft Gearing - A transmission is provided having a dual clutch, to achieve torque flow through a countershaft gearing arrangement. The countershaft gearing arrangement includes a plurality of co-planar gear sets having gears that are selectively connectable to a plurality of countershafts. At least one transfer gear set transfers torque from the counter shafts to an output shaft. The output shaft is connected to a final drive unit that has a final drive unit output shaft that is transverse to an input member connected at one end to a torque converter and at the other end to the dual clutch. | 08-28-2008 |
| 20080210030 | MANUAL TRANSMISSION AND VEHICLE HAVING TRANSVERSE-MOUNT ENGINE AND TRANSMISSION ARRANGED IN TANDEM - A vehicle includes an transverse-mount engine and a transmission having an input shaft, an output shaft, a first counter shaft, a second counter shaft, a first gear change mechanism, a second gear change mechanism, and a transmission case, wherein a number of the gear pairs of the second gear change mechanism is less than a number of the gear pairs of the first gear change mechanism, and the gear pairs of the second gear change mechanism are located close to the engine in an axial direction, thereby forming a cut-out portion in the transmission case, a side frame is arranged to pass through the cut-out portion of the transmission case. | 09-04-2008 |
| 20080236314 | Multi-Speed Compound Vehicular Transmission Having an Auxiliary Section with Three Countershafts - A multi-speed compound vehicular transmission having an auxiliary section with three countershafts, including: a main section; and an auxiliary section, wherein the main section includes an input shaft, an output shaft, a synchronizer and two countershafts symmetrically arranged on both sides of the output shaft; the auxiliary section includes an auxiliary section main shaft and a synchronizer; wherein a reduction gear is arranged on the main shaft, three countershafts are distributed with equal distance around the main shaft, and an output end of the main shaft of auxiliary section is connected to a flange. | 10-02-2008 |
| 20080245166 | DUAL CLUTCH TRANSMISSION HAVING REDUCED AXIAL LENGTH - A multiple speed power transmission comprises: an input; an output; first and second input shafts releasably coupled to the input by first and second friction clutches, respectively; a countershaft disposed parallel to the first and second input shafts; an output pinion fixed to the countershaft; an output ring gear fixed to the output and meshing with the output pinion; an intermediate shaft disposed coaxially with the countershaft; a first input pinion fixed to the first input shaft and meshing with a first gear fixed to the intermediate shaft; a second input pinion fixed to the second input shaft; a second gear disposed coaxially with the intermediate shaft; an idler gear meshing with the second input pinion and the second gear; a first coupler for releasably coupling the first countershaft to the intermediate shaft; and a second coupler for releasably coupling the intermediate shaft to the second gear. | 10-09-2008 |
| 20080245167 | Dual clutch group transmission shifttable under load - In a load shiftable group transmission with a high number of gears, particularly suitable for utility vehicles, the transmission includes a dual clutch a split unit, a direct gear, a main group and a hollow shaft on a countershaft in an arrangement, wherein the various gear stages can be established by a change of the input constants within the split unit without a change in the transmission stage in the main transmission without an interruption in tractive force during shifting between two adjacent gears within the main group. | 10-09-2008 |
| 20080295627 | TRANSMISSION - The present invention is directed to a transmission capable of minimizing the number of speed-change driven gears on a first countershaft to ensure a layout space in an engine compartment of a vehicle, and reducing a driving torque to be applied to a second countershaft to facilitate downsizing of the transmission. In the transmission, the first countershaft | 12-04-2008 |
| 20090019959 | COUNTERSHAFT CLUTCH AND GEAR ASSEMBLY - The present invention provides a low inertia clutch and gear assembly for disposition on a countershaft of a dual clutch automatic transmission (DCT). The assembly includes a gear which is in constant mesh with a gear secured to the input shaft of the transmission and which is freely rotatably disposed on one of the countershafts or lay shafts. The lower inertia components of the clutch, i.e., the clutch hub and the smaller diameter friction plates are secured to the countershaft whereas the higher inertia components, i.e., the clutch housing, the larger diameter friction plates, the reaction plate, the piston and the return springs, rotate with the gear. | 01-22-2009 |
| 20090025496 | Vehicle Transmission - An automatic powershift vehicle transmission comprising an input shaft; an output shaft; first and second intermediate shafts parallel to the input shaft; a lay shaft parallel to the output shaft; gearing providing first, second, third and fourth forward driving paths from the input shaft to the output shaft; a first clutch and a second clutch between the ends of the input shaft to establish driving connections; a third clutch for establishing the first or third forward driving path when the first clutch is operative; and a fourth clutch for establishing the second or fourth forward driving path when the second clutch is operative. | 01-29-2009 |
| 20090049939 | Change Speed Transmission - A transmission, in particular a dual clutch transmission, has a plurality of transmission shafts and a fastening apparatus for at least one fixed gear on one of the transmission shafts. The fixed gear is held axially on the transmission shaft by way of a fastening nut. The fixed gear is formed with a recess around the transmission shaft in a region that lies radially below the gear toothing system. A fastening sleeve is positioned in the recess between the fixed gear and the transmission shaft in a section which adjoins a fastening nut. During the clamping of the fastening nut, the latter bears against the fastening sleeve. As a result, the transmission of micromovements to the fastening nut is minimized or prevented, with the result that loosening of the fastening nut does not take place during the operation of the transmission. | 02-26-2009 |
| 20090095101 | Load-shiftable transmission for a commercial vehicle - In a load shift transmission for a utility vehicle having a transmission input shaft, a split group, a main group and a range group, a dual clutch with two input shafts, a main shaft and a countershaft with input constants including loose gear wheels, one loose gear wheel of an input constant is selectively rotationally fixedly connectable by means of shift elements to either one of the input shafts which can in each case be coupled by means of clutches (K | 04-16-2009 |
| 20090165582 | TWIN CLUTCH TYPE SPEED-CHANGE APPARATUS - A twin clutch type speed-change apparatus for detecting the engagement state of a dog clutch by use of the rotational speed difference between an inner main shaft and an outer main shaft and of a signal outputted from a gear position sensor. A rotational speed difference between an inner main shaft and an outer main shaft is detected by use of inner and outer rotational speed sensors. When the engagement of the dog clutch is to be released, it is judged to complete the release if the signal outputted from the gear position sensor indicates a speed step number after shifting and the rotational speed difference is zero. It is judged as a dog-tip caught state if the signal outputted from the gear position sensor indicates a speed step number before or after shifting and the rotational speed difference is a transmission gear ratio difference. | 07-02-2009 |
| 20090173175 | Double-clutch gearbox - The invention concerns a gearbox comprising two primary shafts ( | 07-09-2009 |
| 20090188336 | TRANSMISSION COMPRISING A DEVICE FOR DETECTING ROTATIONAL SPEED - A transmission with a rotation speed determining device includes a rotation speed indicator ( | 07-30-2009 |
| 20090199666 | Transmission Gearbox Family in Parallel Shaft Transmission System - This invention relates to a transmission gearbox family to provide five, six, seven, eight and nine speed ratios with a reverse speed ratio and a neutral condition in motor vehicles. The invention arranges a plurality of gearwheels in parallel shaft systems such that minimum number of gearwheels is obtained by either combination of clutches with synchronizers for transmission gearboxes with a torque converter and direct clutch to clutch gearboxes without a torque converter, or synchronizers for automated manual transmission gearboxes. For total number of the gearwheels involving in forward driving, five-speed transmission gearboxes have eight gearwheels, six-speed transmission gearboxes have minimum of nine gearwheels, seven-speed transmission gearboxes have minimum of nine gearwheels, eight-speed transmission gearboxes have minimum of nine gearwheels and nine-speed transmission gearboxes have minimum of nine gearwheels, respectively. Each family member has three parallel shafts with either selectively or continuously interconnected with the gearwheels through the engaged single or multiple torque transmitting mechanisms. The direct clutch-to-clutch gearboxes without a torque converter and automated manual gearboxes have a mechanical damper and a main clutch. | 08-13-2009 |
| 20090235768 | Auxiliary range transmission - In an auxiliary range transmission comprising a main group having a main transmission shaft and two main countershafts capable of rotating in relation to two auxiliary countershafts of a range or an auxiliary transmission group, a gearshift element is provided, which, in a first position, rotationally engages a loose gear of the main group and, in a second position, rotationally locks a loose gear of the range or auxiliary group with the main shaft. In an alternative embodiment, a splitter group may also be arranged in front of the main group in place of the range or auxiliary transmission group. | 09-24-2009 |
| 20090241707 | MULTI-STEP TRANSMISSION - A multi-step transmission having at least a reverse drive gear, several forward drive gears, a main shaft ( | 10-01-2009 |
| 20090255356 | Eight speed chainless drive for a pedal powered utility tricycle - An improved eight speed chainless drive includes a gear case housed within the hub of the driving wheel of a utility tricycle with a drive shaft on the axis of the wheel. Three counter shafts rotatably mounted on ball bearings in the gear case are equally spaced around the drive shaft with six gears fixed on each counter shaft. The two gears on one end of each counter shaft are in constant mesh with two drive gears which can be selectively locked to the drive shaft, and the four gears on the other end are in constant mesh with four gears rotating freely on a driven gear carrier rotatably mounted on a ball bearing on the drive shaft, with provisions for selectively locking any one of the four to the driven gear carrier. Spring-loaded pawls mounted on steel pins in the end of the driven gear carrier engage a ratchet ring fixed in the wheel hub for driving the wheel. | 10-15-2009 |
| 20090266190 | MULTI-GROUP TRANSMISSION OF A MOTOR VEHICLE - A multi-group transmission of a motor vehicle and a method of operating the transmission. The transmission has at least two transmission groups in the drive train and a mechanism for engaging an intermediate gear to reduce drive force interruptions during gearshifts. To obtain comfortable, shift operations that are free from drive force interruptions by way of an intermediate gear, a starting element and a shift-under-load element are arranged between a drive shaft, that is actively connected to a motor, and a transmission input, such that by way of the shift-under-load element, an active connection is formed between the driveshaft and a transmission output shaft, via at least one auxiliary shaft made as an intermediate gear shaft, with a drive input gearset and at least one drive output gearset bypassing at least a main group and independent of the engagement or disengagement of the starting element. | 10-29-2009 |
| 20090266191 | MANUAL TRANSMISSION FOR A MOTOR VEHICLE - A transmission for a motor vehicle is provided that includes, but is not limited to a drive shaft and at least two countershafts which can be driven by the drive shaft with opposite rotational directions. A first one of the countershafts carries a hollow shaft which can be fixed to the first countershaft and on which a first driven gearwheel is rotationally fixed. Further, on the hollow shaft, a second gearwheel is rotatably attached which meshes with a fixed gearwheel of the second countershaft, and a selector sleeve is rotationally fixed on the hollow shaft and is displaceable between an engagement position at a selector gearing of the second gearwheel and an engagement position at a selector gearing of the first countershaft. | 10-29-2009 |
| 20090272212 | Transmission with Hydraulically Actuated Splined Cluth - A transmission includes an input member, an output member, and an intermediate member coaxially aligned with the input member and the output member. The transmission further includes at least one countershaft substantially parallel with the input member, output member and the intermediate member, and at least one gear associated with each of the input member, the output member, intermediate member, at least one countershaft. The transmission also includes a planetary gear set to operatively couple a gear of the at least one gear associated with the intermediate shaft with the output shaft, and a plurality of clutches to selectively define a torque transfer path from the input member to the output member via one or more of the intermediate member, first countershaft, second countershaft, and the at least one associated gears therewith. The plurality of clutches include a direct drive clutch to selectively couple the input member directly to the intermediate member. | 11-05-2009 |
| 20090301240 | ARRANGEMENT FOR REDUCING RATTLING IN A TRANSMISSION - An arrangement for reducing rattling in a transmission of counter shaft design having first countershafts ( | 12-10-2009 |
| 20100037718 | DUAL CLUTCH TRANSMISSION - A dual clutch transmission for a motor vehicle, having a dual clutch with two start up clutches which, via a prime mover, can be respectively connected with one of first and second transmission input shafts arranged coaxially in relation to each other, such that a group of gears is allocated to each of the transmission input shafts. To minimize the size of the transmission, the gear groups are constructed as sub-transmissions that are mounted laterally with respect to the dual clutch. Each gear group has a counter shaft and a main shaft, with the main shaft being a transmission output shaft. Each sub-transmission has a single sub-transmission connection that transmits drive from the associated transmission input shaft to the counter shaft of the sub-transmission. | 02-18-2010 |
| 20100050797 | MULTI-SPEED TRANSMISSION WITH COUNTERSHAFT GEARING ARRANGEMENT - A transmission includes an input member, an output member, a first and second interconnecting member, a plurality of countershafts, a reverse member, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 03-04-2010 |
| 20100071491 | TRANSMISSION ARRANGEMENT AND METHOD FOR LOAD EQUALIZATION IN A TRANSMISSION ARRANGEMENT - A transmission arrangement ( | 03-25-2010 |
| 20100132492 | HYBRID POWERTRAIN AND DUAL CLUTCH TRANSMISSION - An automatic dual clutch transmission includes an input clutch which selectively connects a prime mover to an electric motor. The electric motor output, in turn, drives a pair of gears, one of which is in constant mesh with a first gear on a first quill and a second gear on a second quill, the other being in constant mesh with a third gear on the first quill and a fourth gear on the second quill. On each quill, between each pair of gears driven by the input is a pair of dog clutches which connect one of the two gears to the associated quill. Each of the quills drives an input of a respective pair of friction clutches which drive a respective pair of layshafts or countershafts. A similar arrangement of a second pair of gears flanked by dog clutches connects each layshaft or countershaft through one of a pair of gears which are in constant mesh with a pair of output gears coupled to and driving a differential cage. | 06-03-2010 |
| 20100154573 | TWIN LAYSHAFT TRANSMISSION - Various configurations of twin layshaft gear transmission are disclosed, typically having a large degree of common parts between single and dual clutch variants. In one embodiment reverse ratio is provided via an independent compound idler and is driven from a driving gear also associated with a forward speed ratio. | 06-24-2010 |
| 20100206105 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such that at least seven power shift forward gears and at least one reverse gear can be shifted, and four gear wheel planes are arranged in such a way that at least one power shift winding-path gear can be shifted via the shifting device, such that at least seven power shift forward gears and at least one reverse gear can be shifted, and five gear planes are positioned in such a way that at least one power shift winding-path gear can be shifted via a shifting device. | 08-19-2010 |
| 20100206106 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such power shift forward gears and a reverse gear can be shifted. Three dual gear planes each comprising one fixed gear which is supported by an input shaft and two idler gears which are supported by a respective countershaft. In each dual gear plane at least one idler gear wheel can be used for at least two gears such that at least one winding-path gear is engaged by engagement of a disengaged output coupling device assigned to one of the output gear wheels. | 08-19-2010 |
| 20100206107 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a respective countershaft which have an output gear that couple gears of an output shaft such that forward and reverse gears can be shifted. Three dual gear planes each comprise two idler gears, each supported by a respective countershaft, and one fixed gear. In each dual gear plane, at least one idler gear wheel can be used for implementing at least two gears so that at least one winding-path gear can be shifted via a shifting device. | 08-19-2010 |
| 20100206108 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple with gears of an output shaft such that forward and reverse gears can be shifted. Two dual gear planes each comprise two idler gears, each supported by a respective countershaft, and one fixed gear. In each dual gear plane, at least one idler gear is used for two gears. Two single gear planes each comprise an idler gear and a fixed gear such that at least one winding-path gear is shifted via a shifting device on the second countershaft, and at least one winding-path gear is shifted via a non-engaged coupling device, assigned to an output gear wheel on the first countershaft. | 08-19-2010 |
| 20100212441 | DUAL CLUTCH TRANSMISSION - A dual clutch transmission having countershafts, idler gears and input shafts with gears which engage with the idler gears. The countershafts have a power take-off gear that is coupled to an output shaft. Shift elements connect gear wheels to engage forward and reverse gears. The transmission has two dual gear planes and two single gear planes, one idler gear of the countershafts being respectively associated with a fixed gear of one of the transmission input shafts in each of the dual gear planes. An idler gear in each dual gear plane is utilized for two gears and one idler gear of one countershafts associating with an input shaft fixed gear to shift at least one winding path gear via at least one shift element on each countershaft, and at least one winding path gear can be shifted with a coupling device associated with the take-off gear of the first countershaft and is disengaged. | 08-26-2010 |
| 20100218627 | DUAL CLUTCH TRANSMISSION - A dual-clutch transmission comprising clutches with input sides coupled to an input shaft and output sides respectively coupled to first and second transmission input shafts, countershafts on which toothed idler gearwheels are mounted to rotate, toothed fixed gearwheels are coupled to the first and the second transmission input shafts and engage the idler gearwheels, coupling devices connect the idler gearwheel to one of the countershafts, drive output gearwheels are fixed to countershafts and drive an output shaft, and a shifting element couples the input shafts, such that eight forward gears and at least one reverse gear can be engaged. Five wheel planes are arranged in the transmission such that at least one winding gear can be engaged by the shifting element. | 09-02-2010 |
| 20100218628 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such power shift forward gears and a reverse gear can be shifted. Two dual gear planes each comprising one fixed gear which is supported by an input shaft and two idler gears which are supported by a respective countershaft. In each dual gear plane at least one idler gear wheel can be used for at least two gears. Two single gear planes each comprise an idler gear wheel and a fixed gear wheel, so that at least one winding-path gear can be shifted via the shifting device and one winding-path gear via another shifting device. | 09-02-2010 |
| 20100218629 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to either first or second countershafts which each have an output gear that couple gears of an output shaft such that forward and reverse gears can be shifted. A shifting device couples gears to engage power shift forward and reverse gears. Two dual gear planes each comprising one fixed gear and two idler gears which are supported by a respective countershaft. In each dual gear plane, at least one idler gear wheel can be used for at least two gears. Two single gear planes each comprise an idler and fixed gear such that at least one power shift winding-gear is engaged by a shifting device. | 09-02-2010 |
| 20100236344 | DUAL CLUTCH MULTI-SPEED TRANSMISSION - A transmission includes an input member, an output transfer gear, first and second shaft or transmission input members, first and second counter shaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 09-23-2010 |
| 20100242647 | MANUAL TRANSMISSION - A gear train for first gear, a gear train for another specified forward gear and a gear train for reverse gear are arranged in order from the opposite side to an engine. A synchronizer for reverse gear is arranged on a first countershaft between a first driven gear of the gear train for reverse gear and a driven gear of the gear train for first gear. The synchronizer for reverse gear connects the first driven gear of the gear train for reverse gear and the driven gear of the gear train for first gear when a reverse shift is selected. Accordingly, the manual transmission which can shorten its axial size can be provided. | 09-30-2010 |
| 20100257961 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission comprising two clutches which each have input sides connected to a drive shaft and output sides respectively connected to one of two transmission input shafts coaxial arranged with respect to one another. At least two countershafts having toothed idler gearwheels pivotally supported thereon while toothed fixed gearwheels are disposed on the transmission input shafts and which engage with at least some of the idler gearwheels. A plurality of coupling devices are provided for coupling an idler gearwheel to the respective countershaft in a rotationally fixed manner. An output gearwheel, on each respective countershaft, is coupled to gearing of an output shaft. At least one shift element is provided for connecting two toothed gearwheels in a rotationally fixed manner such that a plurality of power shifting forward gears and at least one reverse gear can be shifted. | 10-14-2010 |
| 20100257962 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with two clutches with input sides connected to a drive shaft and output sides respectively connected to one of two transmission input shafts disposed coaxially to each other. At least two countershafts are provided, upon which toothed idler gearwheels are mounted in a rotatable manner, and toothed fixed gearwheels are disposed on the two transmission input shafts in a rotationally fixed manner. At least one shift element is provided for connecting two toothed gearwheels in a rotationally fixed manner, and at least multiple power shift forward gears and/or at least one reverse gear can be shifted. Six gear planes are provided so that at least one power shift winding path gear is shifted via at least one shift element. | 10-14-2010 |
| 20100257963 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with two clutches (K | 10-14-2010 |
| 20100257964 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with two clutches (K | 10-14-2010 |
| 20100257965 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission comprising two clutches (K | 10-14-2010 |
| 20100257966 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with inputs of two clutches (K | 10-14-2010 |
| 20100257967 | DOUBLE CLUTCH TRANSMISSION - A double clutch transmission with two clutches with input sides connected to a drive shaft and output sides each respectively connected to one of two transmission input shafts arranged coaxially with each other. At least two countershafts on which toothed idler gearwheels are rotatably supported. There are toothed fixed gearwheels arranged on the two transmission input shafts in a rotationally fixed manner. At least one first shift element is provided for connecting two idler toothed gears in a rotationally fixed manner whereby at least several power-shift forward gears at least one reverse gear are capable of being implemented. There are a maximum of seven gear planes so that at least one winding path gear is shifted with a disengaged first output coupling device that is allocated to the first power take-off gear. | 10-14-2010 |
| 20100263465 | DUAL CLUTCH TRANSMISSION - A dual clutch transmission is described having first and second input shafts and allowing at short axial length many degrees of freedom for providing various transmission ratios of the individual driving gears. A loose wheel of a reverse driving gear is provided on a third drive shaft and engages a first gear wheel of a step wheel. A fixed wheel of a second forward driving gear is provided on one of the input shafts and is engaged by a second gear wheel of a step wheel. The step wheel is switchable by a first gear shifting clutch that is provided on the second drive shaft and is designed as a first single gear shifting clutch allowing to connect only the step wheel in a rotationally fixed manner to the second drive shaft such that the step wheel co-rotates with the second drive shaft. | 10-21-2010 |
| 20100269611 | DUAL CLUTCH TRANSMISSION - A dual-clutch transmission comprising clutches with input sides coupled to an input shaft and output sides respectively coupled to two transmission input shafts. Toothed idler gearwheels are mounted to rotate on countershafts while toothed fixed gearwheels are connected to the first and the second transmission input shafts and engage with the idler gearwheels. Coupling devices are provided for connecting the idler gearwheels to the countershaft, and drive output gearwheels are fixed to the countershafts and couple an output shaft, while a shifting element couples the input shafts such that eight forward gears and at least one reverse gear can be engaged. Four wheel planes are arranged in the transmission such that at least one winding gear can be engaged by the shifting element. | 10-28-2010 |
| 20100269612 | DUAL CLUTCH TRANSMISSION - A transmission includes an input member, an output member, first and second shafts, first and second countershafts, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 10-28-2010 |
| 20100269613 | MULTI-CLUTCH TRANSMISSION HAVING DUAL FRONT-POSITIONED GEARS AND METHOD OF OPERATING THE SAME - A multi-clutch transmission having dual front-positioned gears and a method of operating the same are provided. Compared to a known dual clutch transmission, the multi-clutch transmission provides a simple structure, stable operation, and easy manufacturing and maintenance. The multi-clutch transmission includes an input shaft connected to a flywheel, first and second layshafts receiving rotating power from the input shaft, first and second front-positioned gears installed at respective front ends of the first and second layshafts, first and second clutches installed on the first and second layshafts in the rear of the first and second front-positioned gears respectively, first and second rotating-direction correction gears installed on the first or second layshaft in order to rotate the first and second layshafts in the same direction, and an output shaft interposed between the first and second layshafts and disposed parallel to each of the first and second layshafts. | 10-28-2010 |
| 20100275707 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couple gears of an output shaft such that at least seven power shift forward gears and at least one reverse gear can be shifted, and four gear wheel planes are positioned in a way that at least one power shift winding-path gear can be shifted via the shifting device. | 11-04-2010 |
| 20100288065 | SEVEN SPEED DUAL CLUTCH TRANSMISSION WITH FOUR AXES OF ROTATION - A transmission connectable to an input member and having an output transfer gear, first and second transmission input shaft members, first and second countershaft members, an idler shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the transmission input members and the output member. | 11-18-2010 |
| 20100294060 | DUAL CLUTCH TRANSMISSION - A double clutch transmission with two clutches connected to a drive shaft and to one of two transmission input shafts. Fixed gears are coupled to the input shafts and engage idler gears. Several coupling devices connect the idler gears to a countershaft which have an output gear that couples to an output shaft such that forward and reverse gears can be shifted. Two dual gear planes each comprising two idler gears, each supported by a respective countershaft, and one fixed gear. In each dual gear plane, at least one idler gear wheel can be used for at least two gears. Two single gear planes each comprise an idler and a fixed gear such that a winding-path gear is shifted by disengaging an output gear wheel coupling device on the first countershaft. Another winding-path gear is shifted by disengaging an output gear wheel coupling device on the second countershaft. | 11-25-2010 |
| 20100319473 | SEVEN SPEED DUAL CLUTCH TRANSMISSION WITH FOUR AXES OF ROTATION - A transmission is connectable to an input member and includes an output gear, first and second shaft members, first and second countershaft members, a reverse shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 12-23-2010 |
| 20110030488 | DOUBLE CLUTCH WINDING TRANSMISSION - A double clutch winding transmission, having two sub-transmissions (T | 02-10-2011 |
| 20110048149 | MANUAL TRANSMISSION FOR VEHICLE - A six speed M/T includes four shafts, which are an input shaft A | 03-03-2011 |
| 20110048150 | ACTUATING ASSEMBLY FOR A CENTRALLY SYNCRONISED DUAL-CLUTCH TRANSMISSION - An actuating assembly for actuating synchronizing elements of a centrally synchronized dual-clutch transmission having at least a first part-transmission ( | 03-03-2011 |
| 20110061486 | MANUAL TRANSMISSION FOR VEHICLE - A six speed M/T includes four shafts, which are an input shaft A | 03-17-2011 |
| 20110079097 | TWO-SPEED TRANSMISSION FOR ELECTRIC VEHICLES - The transmission comprises: a primary shaft; a secondary shaft; a gearing of first speed comprising a first driving gearwheel carried by the primary shaft and a first driven gearwheel carried by the secondary shaft and permanently meshing with the first driving gearwheel; a gearing of second speed comprising a second driving gearwheel carried by the primary shaft and a second driven gearwheel carried by the secondary shaft and permanently meshing with the second driving gearwheel; an overrunning clutch associated to one of the first driving gearwheel and first driven gearwheel to allow the transmission of the torque via the gearing of first speed only in the direction from the primary shaft to the secondary shaft; a first coupling device arranged to connect either of the first driving gearwheel and first driven gearwheel, namely the gearwheel to which the overrunning clutch is associated, for rotation directly with the respective shaft, so as to allow the transmission of the torque via the gearing of first speed also in the direction from the secondary shaft to the primary shaft; and a second coupling device arranged to connect either of the second driving gearwheel and second driven gearwheel for rotation with the respective shaft. The first and second coupling devices are both shiftable between an open condition and a closed condition independently of each other. The first coupling device is normally open, whereas the second coupling device is normally closed. | 04-07-2011 |
| 20110113909 | GEARBOX FOR A MOTOR-VEHICLE DOUBLE CLUTCH TRANSMISSION - A gearbox includes two coaxial primary shafts, a secondary shaft and a lay shaft. The two primary shafts carry fixed gearwheels acting as driving gearwheels of the gear trains associated with the forward gears and with the reverse gear. The secondary shaft carries idle gearwheels acting as driven or intermediate gearwheels of the gear trains associated with the forward gears and with the reverse gear, and a final reduction pinion. The lay shaft carries a first idle gearwheel acting as driven gearwheel of a first gear train associated with the reverse gear, a second idle gearwheel acting as driven gearwheel of a second gear train associated with one of the forward gears, and a fixed gearwheel acting as parking gearwheel. The lay shaft is permanently kinematically connected to the secondary shaft via a third gear train having a first fixed gearwheel carried by the lay shaft, a second idle gearwheel coaxial with the two primary shafts and a third fixed gearwheel carried by the secondary shaft, the two fixed gearwheels of the third gear train meshing permanently both with the idle gearwheel of the third gear train. | 05-19-2011 |
| 20110138943 | DOUBLE-CLUTCH TRANSMISSION FOR VEHICLES - A double-clutch transmission includes, but is not limited to an inner input shaft inside an outer input shaft. Two clutch discs are connected to the two input shafts, respectively. Three layshafts of the DCT are parallel to the input shafts and one of the layshafts has a pinion at en end. Gearwheels on the shafts include, but are not limited to seven gearwheel groups for providing seven sequentially increasing forward gears. Each of the groups comprises a fixed gearwheel on the inner input shaft, meshing with an idler gearwheel on one of the layshafts for providing a forward gear. A fourth fixed gearwheel meshes with a fourth gear idler gearwheel and a sixth gear idler gearwheel. Especially, the DCT further includes, but is not limited to comprises the double-clutch transmission that includes, but is not limited to a park-lock gearwheel fixed onto one of the layshafts that carries a final drive pinion. | 06-16-2011 |
| 20110138944 | DOUBLE-CLUTCH TRANSMISSION FOR VEHICLES - A double-clutch transmission (DCT) includes, but is not limited to two input shafts that are connected to two clutches separately. Three layshafts of the DCT are spaced apart from the input shafts in parallel. One or more of the layshafts includes, but are not limited to a pinion. Gearwheels of eight gearwheel groups are arranged on the shafts for providing seven sequentially increasing forward gears and one reverse gear. Each one of the gearwheel groups comprises a fixed gearwheel on one of the input shaft, meshing with an idler gearwheel on one of the layshafts. A third fixed gearwheel meshes with a third gear idler gearwheel and a fifth gear idler gearwheel. Especially, a fourth fixed gearwheel meshes with a fourth gear idler gearwheel and a sixth gear idler gearwheel. | 06-16-2011 |
| 20110167943 | TRANSMISSION UNIT - A transmission unit ( | 07-14-2011 |
| 20110174104 | Shiftable twin gear for a twin-clutch transmission and twin-clutch transmission - In a shiftable twin gear for a twin-clutch transmission and a twin-clutch transmission, to reduce the effort and costs involved in bearing-mounted idler gears, and in order to provide a simplified twin-clutch transmission a bearing sleeve which is non-rotatable with respect to a first gear body and which has a first bearing region for the bearing support of a second gear body is in the form of a separate component which is press-fitted to the first gear body. | 07-21-2011 |
| 20110214521 | TRANSMISSION FOR VEHICLES - A transmission for a car has a first gearwheel group that includes, but is not limited to s a fixed gearwheel first gear on an input shaft and that is meshing with an idler first gear on a first layshaft. The transmission further includes, but is not limited to an idler reverse gear on a second layshaft, the idler reverse gear meshing with the idler first gear on the first layshaft, wherein gearwheels of a second gearwheel group, of a third gearwheel group, and of a fourth gearwheel group being arranged on the input shaft and on the first layshaft. | 09-08-2011 |
| 20110247439 | GEARBOX WITH LOAD DISTRIBUTION SYSTEM - A gearbox comprising: an input shaft ( | 10-13-2011 |
| 20110308343 | TWIN CLUTCH TYPE TRANSMISSION FOR LARGE-SIZED VEHICLE - A twin clutch type transmission that permits a quick shifting of a mechanical clutch without shock. Numbers of gear teeth of speed-change gears of odd and even-numbered gear ranges, which mesh with the same output gear, are made to be identical each other gear ratios of input gear trains of even and odd-numbered gear ranges are configured so that the speed-change ratios between adjoining gear ranges will form a geometric progression; and gear ratios between speed-change gears of odd and even-numbered gear ranges are configured to be proportional to square of the common ratio. In speed-changing intermediate shaft on which the speed-change gear is installed is coupled with input shaft through friction clutch, and speeds of revolutions of the speed-change gear and the intermediate shaft on which such speed-change gear is installed are brought into synchronized state. | 12-22-2011 |
| 20110314939 | TRANSMISSION HAVING A LOW LAUNCH GEAR - A vehicle transmission includes a pinion secured to an input shaft, a gear meshing with the pinion, an idler secured to the gear, a reverse gear meshing with the idler and secured to a second idler, a low gear supported on a layshaft and meshing with the second idler, and a coupler connecting the low gear to the layshaft. | 12-29-2011 |
| 20120079903 | GEAR CHANGE DEVICE FOR A MOTOR VEHICLE - A gear change device for a motor vehicle includes a first and a second primary shaft coaxial with respect to each other, selectively connectable to the driving shaft of the motor vehicle by means of a double clutch engagement device, and a first and a second secondary shaft, whose axes are parallel and spaced from the common axis of said primary shafts, and having respective output gear wheels intended to mesh with the gear wheel of a differential. A plurality of pairs of gear wheels correspond to a plurality of forward gear ratios and to at least one reverse gear ratio. The gears of each pair are one rigidly connected in rotation with one of the primary shafts or with one of the secondary shafts while the other is freely rotatable respectively on one of the secondary shafts or on one of the primary shafts. A parking gear wheel is operatively connected to said first secondary shaft cooperating with a lock device for locking the gear change device in the parking condition. The parking gear wheel is rotatably mounted on a fourth axis, parallel and spaced both with respect to the common axis of the two primary shafts and with respect to the axes of the two secondary shafts. | 04-05-2012 |
| 20120132022 | Drive Unit for a Motor Vehicle - A drive unit comprises a clutch arrangement and a transmission which is connected to the clutch arrangement by way of a shaft arrangement. A fluid supply device is arranged radially inside the clutch arrangement and around the shaft arrangement, in order to supply the clutch arrangement with fluid. The shaft arrangement extends into the transmission. The transmission comprises a plurality of transmission components along the shaft arrangement. The components are supplied with fluid for at least one of lubrication and cooling purposes. | 05-31-2012 |
| 20120144940 | AUTOMATED TRANSMISSION AND METHOD FOR OPERATING AN AUTOMATED TRANSMISSION - An automated transmission comprises a hydraulic control device and one or more hydraulically actuated gear units. The hydraulic control device comprises a control unit for setting actuating pressures on the gear units; a base pressure control valve for adjusting a hydraulic base pressure of the hydraulic control device; and a device for controlling the base pressure control valve dependent on the actuating pressures. The automated transmission further comprises a device for switching through an actuating hydraulic pressure to the base pressure control valve. A method comprises the method steps of adjusting a hydraulic base pressure at the hydraulic control device; adjusting actuating pressures for actuating one or more transmission units; switching through one of the actuating pressures to the base pressure control valve; and adjusting the hydraulic base pressure by one of the actuating pressures. | 06-14-2012 |
| 20120216639 | SHIFTING DEVICE AND METHOD FOR SHIFTING CONTROL OF AN AUTOMATED GROUP TRANSMISSION - A shifting device and a method controlling shifting of transmission comprising main gearing and a splitter group which have a common countershaft. The splitter group is a double clutch transmission having two coaxially disposed input shafts, each of which can be connected, on the input side, to a motor drive shaft and, on the output side via a shiftable input stage, to the countershaft. Each input shaft of the shifting device is allocated a shift rail. Each shift rail is axially parallel and axially displaceable and is adjustably connected to the selector sleeve of an allocated shifting group via a shift fork and has engagement openings. A selector shaft is axially parallel to the shift rails and comprises selector fingers which engaging in the engagement openings of the shift rails. The selector shaft rotates, via a selection actuator, and is axially displaced, via a shifting actuator. | 08-30-2012 |
| 20120222512 | DOUBLE CLUTCH ACTUATION ARRANGEMENT - A double clutch assembly is provided in accordance with an embodiment. A pivot axis of a first lever and a pivot axis of a second lever is located at the same side of a first actuating element and of a second actuating element, namely at the same side of the tubular element and of the annular element. Furthermore, the first lever is provided with a first lever actuation area in form of the toe end area of the inner lever for a first actuator device, for example a piston. The first actuating element in form of the tubular element is situated in an area between the first lever actuation area and the pivot axis of the first lever. | 09-06-2012 |
| 20120227525 | Double Clutch Transmission - The invention provides a double clutch transmission ( | 09-13-2012 |
| 20120247242 | SADDLE TYPE VEHICLE AND VEHICLE POWER UNIT - A saddle type vehicle having mounted thereon a power unit is provided with a twin clutch type transmission including a pair of main shafts and a pair of clutches along different axes, to enable a compact layout of axes and a reduction in size of the unit and its surroundings. The axis center (first main axis) of a first main shaft is disposed rearwardly of the axis center (crank axis) of a crankshaft and forwardly of the axis center (counter axis) of a counter shaft, whereas the axis center (second main axis) of a second main shaft is disposed rearwardly of the axis center (counter axis) of the counter shaft and forwardly of the axis center (pivot axis) of a pivot shaft. | 10-04-2012 |
| 20120247243 | STRADDLE-RIDE TYPE VEHICLE - To achieve downsizing of a power unit and the vicinity thereof by permitting compact axial arrangement in a straddle-ride type vehicle on which the power unit having a twin-clutch type transmission is mounted. The transmission has a pair of main shafts with respective different axes and corresponding clutches. One of respective axial centers of the main shafts is disposed on one (above) of the sides with respect to a line and the other is disposed on the other side (below), the line connecting an axial center of the counter shaft with an axial center of a pivot shaft, as viewed in side elevation from the axial direction of the main shafts and counter shaft. | 10-04-2012 |
| 20120247244 | DEVICE FOR REDUCING RATTLING NOISES IN VARIABLE-SPEED TRANSMISSIONS - A device for reducing rattling noises in a variable-speed transmission having a main shaft, two countershafts and gear wheels that are mounted, with some radial play relative to the main shaft, for rotation around the main shaft. To engage a gear, a respective loose gearwheel can be connected in a rotationally fixed manner to the main shaft. In a first embodiment, at least one loose gearwheel is mounted on the main shaft by at least one roller bearing, and the roller bearing is axially fixed relative to the main shaft by at least one flexibly resilient element. In a second embodiment, the loose gearwheel is supported, by a roller bearing on a component that is fixed to the housing and has radial play. The roller bearing is axially fixed relative to the component fixed to the housing by at least one flexibly resilient element. | 10-04-2012 |
| 20120260756 | EIGHT SPEED DUAL CLUTCH TRANSMISSION - A transmission is connectable to an input member and includes an output transfer gear, first and second shaft members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of gears, synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 10-18-2012 |
| 20120272760 | DUAL CLUTCH MULTI-SPEED TRANSMISSION - A transmission includes a transmission housing, a dual clutch assembly, a first through seven gear sets, a first transmission input shaft member rotatably supported in the transmission housing, a second transmission input shaft member rotatably supported in the transmission housing, a first countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input shaft members, a second countershaft rotatably supported within the transmission housing and spaced apart from and parallel with the first and second transmission input shaft members and five synchronizer assemblies each for selectively coupling at least one of the gears of the gear sets with at least one of the first countershaft and the second countershaft. The dual clutch assembly and the synchronizer assemblies are operable to achieve at least eight forward speed ratios and a reverse speed ratio between an input member and output member. | 11-01-2012 |
| 20120272761 | DUAL CLUTCH MULTI-SPEED TRANSMISSION - A transmission includes an input member, an output member, first and second transmission input shafts, first and second countershafts, a plurality of co-planar gear sets and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and eight forward speed ratios between the input member and the output member. | 11-01-2012 |
| 20120279333 | SHIFT APPARATUS OF DUAL CLUTCH TRANSMISSION MECHANISM - Provided is a shifting apparatus of a dual clutch transmission, including: a plurality of synchronizers (S | 11-08-2012 |
| 20120304789 | VEHICLE DRIVE SYSTEM - A vehicle drive system includes an input shaft to which a driving force of a first driving source is inputted, a first shaft idly rotating relative to the input shaft and being connectable with the input shaft, the first shaft being provided with a plurality of drive gears, a single drive gear idly rotating relative to the input shaft and being connectable with the input shaft, a second shaft arranged parallel to the input shaft and being provided with a first idler gear and a second idler gear, an output shaft arranged parallel to the input shaft and outputting the driving force to a wheel, and a plurality of driven gears idly rotating relative to the output shaft and being connectable with the output shaft, the plurality of driven gears engaging with the plurality of drive gears, respectively. | 12-06-2012 |
| 20120304790 | ELECTRIC PROPULSION SYSTEM FOR VEHICLES - A propulsion system includes two electric motors, a gearbox with at least three forward gears and a control unit to control the electric motors and the engagement of the gears. The gearbox includes two primary shafts, one associated to with the odd gears and the other with the even gears and are permanently connected each to a respective electric motor. The control unit controls the two electric motors and the engagement of the gears of the gearbox to provide at least a first operating mode in which the first gear and the second gear are engaged at the same time and a second operating mode in which the second gear and the third gear are engaged at the same time. In each of these operating modes the torque being transmitted by both the electric motors. | 12-06-2012 |
| 20130019705 | GEAR CHANGE DEVICE FOR A MOTOR VEHICLE - A gear change device for including a first and a second primary shaft, selectively connectable to a driving shaft of a motor vehicle by a double clutch engagement device, and a first and a second secondary shaft. A plurality of gear selector devices rotatably couples each of freely rotatable gear wheels with the shaft on which it is mounted, and at least one rotatable actuator drum, for controlling the selector devices, having a plurality of cam tracks. The selector devices include respective fork-like actuator members and each has a cam follower element engaged in a respective cam track of the respective actuator drum. Each pair of cam tracks adjacent w each other provided on an actuator drum controls fork-like actuator members which are associated to different secondary shafts and which have the cam follower elements thereof engaged on the drum in positions angularly spaced with respect to each other. | 01-24-2013 |
| 20130025389 | CONTROL APPARATUS FOR AUTOMATIC TRANSMISSION - In a control apparatus for an automatic transmission having multiple speeds constituted by four sets and speed selecting mechanisms corresponding to the four sets, assuming the speeds as seven among eight speeds of A to H in order of gear ratio, the four sets are constituted by a first set of A having a largest gear ratio and C that is next but one; a second set including at least H having a smallest gear ratio; a third set of B and D between two of the first set; and a fourth set including two of E, F and G between the second and third sets, and one of first and second pressure regulators selectively supplies hydraulic pressure to two of the mechanisms corresponding to the first and second sets, while the other thereof selectively supplies hydraulic pressure to two of the mechanisms corresponding to the third and fourth sets. | 01-31-2013 |
| 20130042709 | Gear Change Transmission Having Axially Adjusting Countershafts - A change-gear transmission having an input shaft, a main shaft having at least one main shaft gear, a plurality of countershafts spanning between the input shaft and main shaft gear, and gear synchronizers between selectable gears. The bore of main shaft gears have a minimal radial clearance fit with its mating parts to prevent gear synchronizer wear, while the meshing between the input shaft gears and countershaft gears is equally distributed using a means to equalize the torque transfer between countershafts. The countershafts are rotatably supported and displace axially between bearing or bushing supports, while the meshed gears comprise a helical gear tooth arrangement to create axial load on the countershaft if excessive and uneven load is sensed in one countershaft over another. This presents a new and unique countershaft meshing design that allows multiple countershafts to achieve equal load sharing while permitting gear synchronizers use on the main shaft. | 02-21-2013 |
| 20130047760 | CONTROL SYSTEM OF TRANSMISSION - According to aspects of the disclosure, provided is a transmission control system to enable smooth engagement of meshing engagement means When establishing a forward gear position by engaging the meshing engagement means and a forward clutch while a vehicle is stationary. For example, when a synchro device is operated so as to establish a predetermined forward gear position, it becomes difficult to smoothly couple a first speed drive gear to the input shaft by the synchro device. However, temporarily engaging a reverse clutch during the process of operation of the synchro device allows a reverse torque to act on the first speed drive gear to apply torsion to a power transmission path between the first speed drive gear and a driven wheel. Furthermore, a repulsive force is applied and generates backlash between the synchro device and the first speed drive gear, thus enabling smooth operation of the synchro device. | 02-28-2013 |
| 20130081491 | DUAL CLUTCH TRANSMISSION APPARATUS, MOTORCYCLE, AND START CONTROL METHOD - In a dual clutch transmission, a transmission control unit operates at vehicle start such that a clutch engaged is changed from a second clutch, which is on a high speed gear stage side, to a first clutch, which is on a low speed gear stage side, resulting in a torque transmission path being changed. At this time, torque capacities of the first and second clutches change so that thermal loads on the first and second clutches are equal or approximately equal according to a clutch rotational speed difference that is a rotational speed difference between the driving side and the driven side in the first clutch. | 04-04-2013 |
| 20130098187 | POWER TRANSMISSION UNIT FOR AN ELECTROMOTIVELY OPERATED DRIVE AND MAGNETO-RHEOLOGICAL CLUTCH - A power transmission unit is disclosed which includes a first input shaft and a second input shaft which can be mutually driven by a motor shaft in opposite directions. A driven shaft can be coupled, depending on the desired sense of rotation of the driven shaft, to the first or to the second input shaft, and can engage with a first output shaft and with a second output shaft. The first output shaft can be directly coupled with the first input shaft via a first magneto-rheological clutch, and the second output shaft can be directly coupled with the second input shaft via a second magneto-rheological clutch. A magneto-rheological clutch is disclosed with a coil powered by wireless energy transmission between a sender connected to a stationary housing and a receiver rotating with the coil. | 04-25-2013 |
| 20130133451 | VEHICULAR TRANSMISSION WITH POWER TAKE-OFF UNIT - A transmission, for a motor vehicle with an auxiliary drive (EM), having a first housing part ( | 05-30-2013 |
| 20130139627 | SHIFT MECHANISM, AND VEHICLE EQUIPPED THEREWITH - A shift mechanism that provides a shift mechanism for enabling smooth gear shifting by a transmission, and a vehicle equipped therewith. With this mechanism, a shift drum, to which shift forks are connected via grooves on an outer periphery, is held every predetermined rotation angle. When differences are produced in the degree of rotation between a third rotating member that rotates by motor rotation and a second rotating member that rotates in accordance with the third rotating member, bias is accumulated in a torsion spring. Bias that is accumulated is released when the rotation angle of the third rotating member equals or exceeds a predetermined angle of rotation, rotating a first rotating member via a second rotating member, and rotating the shift drum quickly. | 06-06-2013 |
| 20130160587 | TWIN CLUTCH TRANSMISSION - A twin clutch transmission for a large horsepower vehicle having a compact size and a high transmission efficiency is obtained. | 06-27-2013 |
| 20130160588 | DOUBLE CLUTCH TRANSMISSION HAVING A LAYSHAFT DESIGN - A double clutch transmission of countershaft design having a central shaft and a concentric hollow transmission shaft, one countershaft, and two power-shift elements. Two hollow shafts are disposed on the countershaft coaxially to the countershaft, each of which can be fixed, via one shift device, to the countershaft, and to which at least two gearwheels are fixed. A further hollow shaft is coaxially provided on either the central or hollow transmission shafts and can be connected, via a shift device, to the central or hollow transmission shaft, and to which at least two further gearwheels of the gear stages are fixed. At least three transmission ratios are possible by engaging three of the gear stages on the shift-element side into the power flow, thereby enabling one transmission ratio to be at least partially implemented by a respective sole engagement on the shift-element side into the power flow. | 06-27-2013 |
| 20130192398 | Dual Clutch Transmission And Dual Clutch Actuators Thereof - A dual clutch apparatus for a dual clutch transmission having a first input shaft and a second input shaft includes: a first clutch of generally annular shape; a second clutch of generally annular shape disposed coaxially with the first clutch; and, a plurality of first and second clutch levers received in a clutch retaining housing in a circularly arranged pattern with the first clutch levers alternately interleaved with the second clutch levers; in which the first clutch includes a clutch finger plate of generally annular shape, the clutch finger plate having a plurality of fingers extending in the axial direction of the first clutch and through an outer circumference of the second clutch and configured to push a first clutch application plate of generally annular shape which is coupled with the first clutch levers for clutch application of the first clutch, and a friction plate arranged next to the first clutch application plate and coupled with a hub of the first clutch, the hub of the first clutch coupled with the first input shaft. | 08-01-2013 |
| 20130213165 | TRANSMISSION FOR A MOTOR-VEHICLE - A dual clutch transmission for a motor vehicle which comprises at least two transmission parts and each transmission part comprise at least one input shaft. Drive is outputted from the transmission parts via a common output shaft. The at least one input shaft is arranged on a main axis and the output shaft is arranged on the main axis or a parallel secondary axis. An intermediate transmission has at least one countershaft that is arranged on the secondary axis. At least one of the input shafts can be connected to the output shaft via at least two gear planes and/or at least one shifting element. At least three shifting mechanisms are provided and at least one shifting mechanism is arranged on each of the main and the secondary axes such that one of the at least two gear planes is arranged between two of the at least three shifting mechanisms. | 08-22-2013 |
| 20130228027 | TRANSMISSION AND SHIFT CONTROL SYSTEM - The present invention is capable of suppressing gear shift shocks or delays in acceleration with no interruption of driving force and reducing the weight. Disclosed is a transmission which is provided, with multiple stage shift gears so arranged to shift a number of dog clutches to shift a gear to the upper stage of the multiple stage shift gears, and is characterized in that a guide part is provided to a shift operation section and the dog clutches on each of the sages so as to move the lower dog clutch in a neutral direction by a coasting torque acting on the lower stage by a shift rotation of the upper stage to release a meshing engagement when meshing engagements of the lower and upper dog clutches are simultaneously performed by an operation of the shift operation section. | 09-05-2013 |
| 20130239715 | SEVEN SPEED DUAL CLUTCH TRANSMISSION - A transmission connectable to an input member and having an output transfer gear, first and second transmission input shaft members, first and second countershaft members, an idler shaft, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the transmission input members and the output member. | 09-19-2013 |
| 20130263682 | AUTOMATED MANUAL TRANSMISSION - An automated manual transmission may include a first input shaft and a second input shaft disposed in parallel with each other to form a plurality of stages with a common output shaft, a first switching mechanism that directly transmits or cuts power provided from a flywheel of an engine to or from the first input shaft or the second input shaft, and a second switching mechanism that transmits or cuts power provided from the flywheel through the clutch to or from the first input shaft or the second input shaft. | 10-10-2013 |
| 20130269460 | SEVEN SPEED DUAL CLUTCH TRANSMISSION HAVING IMPROVED PACKAGING - A transmission connected to an engine input member and having an output transfer gear, first and second transmission input shaft members, first and second countershaft members, a plurality of co-planar gear sets, and a plurality of torque transmitting devices. The first and second transmission input shaft members are rotatably supported in the transmission housing by a combination of ball and needle bearings. The first and second countershaft members are rotatably supported in the transmission housing by plurality of thrust bearings. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and a plurality of forward speed ratios between the input member and the output member. | 10-17-2013 |
| 20130298708 | POWER TRANSMISSION DEVICE FOR VEHICLE - A power transmission device for a vehicle includes a casing mounted on a vehicle, a rotational shaft supported in the casing and rotated by an engine, first and second speed changing shafts, supported in the casing and changing a speed of rotation of the rotational shaft, a first speed clutch mechanism and a second speed clutch mechanism provided between the rotational shaft and the first and second speed changing shafts, respectively, and an output shaft outputting rotation of one speed changing shaft selected by each of the clutch mechanisms. A first brake device applying a braking force to the first speed changing shaft and a second brake device applying the braking force to the second speed changing shaft are provided in the casing. | 11-14-2013 |
| 20130298709 | DUAL COUPLING GEAR MECHANISM - Dual coupling gear mechanism for a motor vehicle, having a first input shaft and a second input shaft and having a first and a second countershaft, the input shafts and the counter-shafts being connected to each other by means of a plurality of shiftable wheel sets in order to establish at least seven forward gear stages and at least one reverse gear stage. At least one wheel set has a fixed wheel which is connected to one of the input shafts and two loose wheels which are rotatably supported on the first and on the second counter-shaft, respectively, and which are in engagement with the fixed wheel. An electric engine is connected to a loose wheel of one of the wheel sets or can be connected thereto by means of a shift clutch. | 11-14-2013 |
| 20130305859 | TRANSMISSION SYSTEM - A transmission system has a clutch module which has a single input and two outputs, where clutch devices are located between the outputs and the input. The transmission system further includes a transmission module which has two inputs and a single output, the transmission module comprising at least two sub-transmissions where at least a single speed transforming gear or a single transmission clutch is located between an input and an output of each sub-transmission. The two outputs of the clutch module are connected here to both inputs of the transmission module. | 11-21-2013 |
| 20130312556 | METHOD FOR OPERATING AN AUTOMATED DUAL-CLUTCH TRANSMISSION - A method for operating an automated dual-clutch transmission having two sub-transmissions, with which shafts are associated, which transmit a/no torque as active/inactive shafts when a sub-clutch is engaged/disengaged and a gear is engaged/disengaged, the size and direction of said torque being dependent on the particular gear that is engaged, wherein even gears are associated with an even shaft and odd gears are associated with an odd shaft. When an odd/even gear is engaged, that is, when the odd/even shaft is active, a gear is also initially engaged on the inactive even/odd shaft, in order to change a critical resonance slip speed. | 11-28-2013 |
| 20130312557 | TRANSMISSION SYSTEM - A transmission system has a clutch module with a single input and two outputs. First and second clutch devices are positioned between the input and the two outputs. A transmission module, having two inputs and a single output, includes two sub-transmissions where at least a single speed transforming gear or a single transmission clutch is located between an input and an output of each sub-transmission. The two outputs of the clutch module are connected here to the two inputs of the transmission module. Between the input and the first output of the clutch module is located a first planetary gear set, and between the input and the second output is located a second planetary gear set. | 11-28-2013 |
| 20140013881 | METHOD FOR SYNCHRONIZING A DOUBLE CLUTCH TRANSMISSION AND DOUBLE CLUTCH TRANSMISSION - A method of synchronizing a double clutch transmission having two input shafts and an output shaft. The input shafts can couple a motor drive shaft via an input friction clutch to synchronize rotation of the forward gears. The input shafts are coaxial with one located within the other, and the transmission output shaft is likewise coaxial. Each of the forward and reverse gears are arranged in a respective gearset plane. The gear clutches for the forward and reverse gears form gear shifting devices with some being actuated on two sides. Progressive gear steps are realized between the forward gears, and the gear clutches are unsynchronized shift elements. The rotational speed of one or more gear clutches, necessary for a gear change, is adapted as needed by actuating one or both of the input clutches and controlling the rotational speed of the motor. | 01-16-2014 |
| 20140069217 | MULTI-SPEED TRANSMISSION - A transmission includes an input member, an output member, first and second transmission input shafts, first and second countershafts, a plurality of co-planar gear sets and a plurality of torque transmitting devices. The torque transmitting devices include a plurality of synchronizer assemblies and a dual clutch assembly. The transmission is operable to provide at least one reverse speed ratio and six forward speed ratios between the input member and the output member. | 03-13-2014 |
| 20140090498 | GEARBOX OF SADDLE-RIDDEN VEHICLE - A gearbox includes a transmission mechanism and a clutch system including plural clutches. The gearbox has a gear change mechanism that is interlocked with a change pedal shaft to which rotational force by operation of a shift pedal is transmitted and arbitrarily selects a transmission gear of the transmission mechanism to perform gear shift. An ECU can electronically control connection/disconnection of the clutch system according to a shift position of the gear change mechanism. | 04-03-2014 |
| 20140109705 | PARALLEL GEARSHIFT TRANSMISSION OF A MOTOR VEHICLE - A parallel shift transmission of a motor vehicle comprising splitter and range groups. At least the splitter group is split into two parallel transmission branches having countershafts. One branch can be actuated by a power-shift element to transfer rotation of a drive shaft to a countershaft, via a stepped transmission ratio of the splitter group according to the actuation of one of the transmission branches and then converting and transmitting the rotation, via one of a plurality of range transmission ratios of the range group, to an output shaft. In order to reverse rotation, parallel countershafts can be coupled by individual gearwheel pairs by actuation of associated switching elements such that one countershaft, at the output side of the splitter group in the flow of power flow from the drive to the output shaft, is connected to the other countershaft at a drive side of the range group. | 04-24-2014 |
| 20140123791 | SIX, SEVEN, AND EIGHT SPEED LAYSHAFT AUTOMATIC TRANSMISSION - A transmission includes a housing, an input member connectable to an engine output member, and a launch clutch assembly connected to the input member. A first and a second countershaft are rotatably supported within the transmission housing. A plurality of co-planar gear sets are connected to the input member and the first and second countershafts. A plurality of torque transmitting mechanisms are provided for coupling various components of the co-planar gear sets to the input member and countershafts. The selective engagement of the launch clutch assembly and the torque transmitting mechanisms establishes at least one of six forward speed ratios and a reverse speed ratio. | 05-08-2014 |
| 20140123792 | REVERSE SHIFT DEVICE IN TRANSMISSION - A reverse arm is pivoted by a driving pin of a reverse fork inserted into a driven hole thereof, and the reverse arm thereby moves an idle gear in an axial direction, whereby the idle gear is engaged with and disengaged from a driving gear and a driven gear of a reverse gear train. The outside diameter of the driving pin is smaller than the width between opposed flat inner side surfaces of the driven hole of the reverse arm; thus, a gap is formed between the driving pin and the inner side surfaces. A jump-over mechanism JO is provided between the reverse arm and a transmission casing for elastically urging the reverse arm outward away from a predetermined intermediate position within the pivoting range of the reverse arm and brings the driving pin in contact with one of the inner side surfaces of the driven hole. | 05-08-2014 |
| 20140123793 | SHIFTING DEVICE AND GEAR UNIT - The present invention relates to a shifting device for a transmission unit of a vehicle, in particular a vehicle that is driven by muscle force. The transmission unit has a first shaft, which is formed as a hollow shaft, on which a plurality of free gears is mounted. The free gears are in engagement with a corresponding plurality of gearwheels, which are mounted on a second shaft, wherein the free gears are connectable to the first shaft by means of selecting devices. The selecting devices can be actuated by means of a camshaft arranged coaxially in the first shaft, wherein the camshaft is connected to a driving device in order to be rotated relative to the first shaft to actuate the selecting means. | 05-08-2014 |
| 20140144265 | POWER TRANSMITTING APPARATUS FOR VEHICLE - A power transmitting apparatus for a vehicle achieves seven forward speeds with a minimal number of input gears disposed on input shafts, since the second speed gear and the fourth speed gear are simultaneously engaged with the second input gear and the third speed gear and the seventh speed gear are simultaneously engaged with the third input gear, and distortion of step ratios at the high-speed region may be prevented. | 05-29-2014 |
| 20140144266 | POWER TRANSMITTING APPARATUS FOR VEHICLE - A power transmitting apparatus for a vehicle, includes a variable connecting device, an input device, a speed output device having first and second synchronizer modules, and a reverse speed device. An even-numbered highest speed gear is disposed at one of synchronizer modules related to even-numbered speeds among the synchronizer modules. An odd-numbered highest speed gear is disposed at one of synchronizer modules related to odd-numbered speeds among the synchronizer module. | 05-29-2014 |
| 20140174229 | AUTOMATIC MULTI-SPEED GEAR SYSTEM - An automatic multi-speed gear system includes an input axle, a first arm coupled at one end with the input axle through bearings that allow for independent rotational movement of the input axle along its longitudinal axis. The first arm is also configured to rotate about the input axle as its pivot. The system also includes a first axle coupled with bearings at the opposing end of the first arm. A first set of gears coupled to the input axle and the first axle transfer the rotational motion of the input axle to the first axle. The system also includes a second arm coupled at one end with bearings to the first axle and at the opposing end to a second axle. The second axle is coupled through a one way bearing to an output axle. A second set of gears coupled to the first axle and the second axle transfer the rotational motion of the first axle to the second axle and a third set of gears coupled to the second axle and the output axle transfer the rotational motion of the second axle to the output axle. The one-way bearing facilitates operation in either a low speed configuration or a high speed configuration. | 06-26-2014 |
| 20140190295 | Oil Field Pump Unit Hybrid Gear Reducer - An oilfield pumping unit two-stage transmission gear reducer includes a low speed stage having a low speed shaft configured to receive motion from an intermediate shaft. A first gear pair includes a low speed shaft double circular arc gear mounted on the low speed shaft and configured to be driven by an intermediate shaft double circular arc gear mounted on the intermediate shaft. A high speed stage includes a high speed shaft configured to receive motion from an intermediate shaft. A second gear pair has a high speed shaft involute gear mounted on the high-speed shaft and configured to be driving an intermediate shaft involute gear mounted on the intermediate shaft. | 07-10-2014 |
| 20140196556 | PARALLEL SHIFT TRANSMISSION - A parallel shift transmission which comprises split and range groups, each of which is divided into two parallel transmission branches. One branch can be actuated by a load shift element to transfer rotation of a drive shaft, via a transmission ratio of the split group, and then to a countershaft of the associated branch. Subsequently rotation can be converted, via a range ratio of the range group, into rotation of an output drive shaft. The gear stages are alternately divided between the branches in the order of associated transmission ratios, while each of the range ratios is achieved by shifting one of the group stages of the range group. To drive a power take-off via the transmission, the load shift elements are individual clutches, each of which is arranged in the associated branch between an output-side counter shaft of the split group and a drive-side counter shaft of the range group. | 07-17-2014 |
| 20140202272 | MULTI-CLUTCH TRANSMISSION FOR A MOTOR VEHICLE - A multi-clutch transmission for a motor vehicle with a prime mover has a main transmission, a range section and an output shaft, the main transmission including one input shaft, a main shaft and a main countershaft, the main shaft being rotationally fixed with a range input shaft of the range section, the range section including a range main shaft that is rotationally fixed with the output shaft, a range countershaft, range gearwheels that can selectively transfer power from the range input member to the range countershaft and on to the range main shaft, and range clutches, the multi-clutch transmission including a by-passing torque path in which power can be transferred when the range section is shifted, and where the by-passing torque path includes a by-passing clutch that selectively can rotationally lock the main countershaft to the range countershaft. | 07-24-2014 |
| 20140251046 | MULTI-SPEED TRANSMISSION - A vehicle transmission includes first, second, third and fourth meshing gear-pinion pairs. The transmission produces a first speed ratio through a power path that includes first and second input shafts, a gear coupler and the first, second and third gear-pinion pairs. The transmission also produces a second speed ratio through a power path that includes the second input shaft, the gear coupler and the second, third and fourth gear-pinion pairs. | 09-11-2014 |
| 20140305239 | DOUBLE CLUTCH TRANSMISSION - A transmission having two clutches connected between a drive and respective transmission input shafts, one being hollow which supports the other within. A hollow countershaft which supports another countershaft therein. A main shaft arranged coaxially between the inner input shaft and an output shaft. Shifting elements can engage a variety of transmission connections in which transmission elements of the main group couple transmission elements of the range group which can couple the output shaft. The hollow countershaft has three fixed wheels which engage respective loose wheels, and the countershafts are rigidly coupled by a shifting element. With respect to this shifting element: an adjacent loose wheel rotates on and can rigidly couple the main shaft; a remote loose wheel rotates on and can rigidly couple the inner input shaft; and a central loose wheel rotates on and can rigidly couple at least one of the inner input and main shafts. | 10-16-2014 |
| 20140311266 | CONTROL DEVICE FOR TRANSMISSION - There is provided a control device for a transmission for shifting a driving force of an engine. The transmission includes at least two input shafts configured to be driven by the driving force of the engine, intermediate shafts provided correspondingly to the at least two input shafts and configured such that driving forces of the input shafts are respectively transmitted thereto, and a clutch provided between the input shafts and the intermediate shafts and configured to transmit the driving forces from the input shafts to the intermediate shafts. A non-use shaft detection section is configured to detect a non-use state of the intermediate shafts based on a transmission state of the clutch. | 10-23-2014 |
| 20140326093 | TRANSMISSION SYSTEM - A transmission system including a first input shaft ( | 11-06-2014 |
| 20150082929 | POWER TRANSMISSION APPARATUS FOR VEHICLE - A power transmission apparatus includes a first/second/third rotary shaft, and a positioning member. The first rotary shaft is connected to an output shaft of a drive source. The second rotary shaft is spline-fitted to a rotary shaft of an electric motor. The third rotary shaft is connected to the first rotary shaft and the second rotary shaft. The positioning member is configured to apply an elastic force in a rotational direction to the rotary shaft and the second rotary shaft in a portion where the rotary shaft and the second rotary shaft overlap each other; set each of a position in the rotational direction of a spline of the rotary shaft of the electric motor and a spline of the second rotary shaft to a specified position, and applies the elastic force in the rotational direction to the rotary shaft and the second rotary shaft. | 03-26-2015 |
| 20160076627 | TRANSMISSION - A constant mesh gear transmission has an input shaft ( | 03-17-2016 |
| 20160076628 | TRANSMISSION - A constant mesh gearbox has five parallel rotational axes. The input and output axes are not aligned. Up to eight forward speeds are disclosed, with two very low ratios suitable for non-highway travel. The transmission is suitable for two and four wheel drive. | 03-17-2016 |
| 20160102734 | TRANSMISSION - A constant mesh gearbox has five parallel rotational axes. The input and output axes are not aligned. Some torque paths are via a sleeve rotatable on a shaft on one of said axes. Up to eight forward speeds are disclosed, with two very low ratios suitable for non-highway travel. The transmission is suitable for two and four wheel drive. | 04-14-2016 |
| 20160123430 | POWERSHIFT TRANSMISSION WITH TWENTY-SEVEN FORWARD MODES - In accordance with an example embodiment, a powershift transmission may include an input shaft, a first counter shaft, a second counter shaft, and an output shaft operably connected to a transmission housing. The powershift transmission may include a plurality of gears and clutches arranged on the shafts resulting in twenty-seven forward modes. | 05-05-2016 |
| 20160131223 | TRANSMISSION WITH DUAL INPUT AND REDUCED NUMBER OF LAY SHAFTS - A transmission including: first and second input shafts; an output shaft; lay shafts; gears; and at least one forward output gear non-rotatably connected to the output shaft; an axis of rotation for each gear; half synchronizer clutches arranged to non-rotatably connect the gears to lay shafts and disconnect the gears from the lay shafts; and an idler gear non-rotatably connected to a lay shaft and meshed with the at least one forward output gear so that when the idler gear rotates about its axis of rotation, the at least one forward output gear rotates about its axis of rotation and when the at least one forward output gear rotates about its axis of rotation, the idler gear rotates about its axis of rotation. For at least one reverse gear ratio, the idler gear is arranged to rotate the output shaft opposite a direction of rotation for the first or second input shaft. | 05-12-2016 |
