Patent application number | Description | Published |
20100044141 | Planetary Transmission Having Common Carrier for Generating Six Forward and Two Reverse Drive Ratios - An automatic transmission includes a first planetary gearset having a first planet pinion set rotatably supported on a common carrier and drivingly engaged with a first sun gear and a first composite gear that acts both as a first ring gear and รก second sun gear. A second planetary gearset includes a second planetary pinion set rotatably supported on the common carrier and drivingly engaged with a third sun gear, the first composite gear and a second composite gear that acts both as a second ring gear and a third ring gear. A third planetary gearset has a third planet pinion set rotatably supported on the common carrier and drivingly engaged with a third sun gear and the second composite gear. A series of nested clutches and multiple bakes are employed to establish six forward speed ratios and one reverse ratio using a single carrier. | 02-25-2010 |
20130316870 | MULTI-SPEED TRANSMISSION - A family of transmission gearing arrangements produces up to ten forward and one reverse speed ratios by selective engagement of various combinations of three or four shift elements. Each disclosed transmission includes four planetary gear sets and six shift elements. Two of the shift elements can be brakes. | 11-28-2013 |
20140024488 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangements produces up to ten forward and one reverse speed ratios by selective engagement of various combinations of four shift elements. Each disclosed transmission includes four planetary gear sets and at least six shift elements. One of the shift elements may be a dog clutch. Optional passive one way brakes simplify the control. | 01-23-2014 |
20140038764 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangements produces up to ten forward and one reverse speed ratios by selective engagement of various combinations of four shift elements. Each disclosed transmission includes four planetary gear sets and at least six shift elements. One of the shift elements may be a dog clutch. Optional passive one way brakes simplify the control. | 02-06-2014 |
20140045639 | MULTIPLE SPEED TRANSMISSION - A family of transmission gearing arrangements produces nine forward and one reverse speed ratio by selective engagement of various combinations of three clutches or brakes. Each transmission gearing arrangement includes a front shiftable gearing arrangement configured to establish a variety of speed ratios between an intermediate shaft and an input shaft. These speed ratios include a reverse speed ratio, a zero speed ratio, two underdrive ratios, and a direct ratio. Each transmission also includes a rear shiftable gearing arrangement configured to selectively establish particular speed relationships among the input shaft, the intermediate shaft, and an output shaft. | 02-13-2014 |
20140045640 | MULTIPLE SPEED TRANSMISSION - A family of transmission gearing arrangements produces nine forward and one reverse speed ratio by selective engagement of various combinations of three clutches or brakes. Each transmission gearing arrangement includes a front shiftable gearing arrangement configured to establish a variety of speed ratios between an intermediate shaft and an input shaft. These speed ratios include a reverse speed ratio, a zero speed ratio, two underdrive ratios, and a direct ratio. Each transmission also includes a rear shiftable gearing arrangement configured to selectively establish particular speed relationships among the input shaft, the intermediate shaft, and an output shaft. Engagement of a clutch in the rear shiftable gearing arrangement establishes an underdrive ratio between the output shaft and the intermediate shaft. Engagement of another clutch in the rear shiftable gearing arrangement constrains the speed of the input shaft to be a weighted average between the speed of the intermediate shaft and the output shaft. | 02-13-2014 |
20140045641 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangement produces at least nine forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. One embodiment includes four simple planetary gear sets, four clutches, and two brakes. Another embodiment includes two axis transfer gear pairs, three simple planetary gear sets, four clutches, and two brakes. | 02-13-2014 |
20140080657 | MULTIPLE SPEED TRANSMISSION AND METHOD OF OPERATION - A family of transmissions has four planetary gear sets, five controllable clutches and brake, and a passive one way brake. Selective engagement of the brakes and clutches in combinations of three produces eight forward speed ratios and one reverse speed ratio. The passive one way brake is engaged in the first forward speed ratio and overruns in the second through fifth forward speed ratios. | 03-20-2014 |
20140113761 | CLUTCH ASSEMBLY AND TRANSMISSION - A transmission utilizes a three clutch module. The clutch module may be pre-assembled before it is assembled into the transmission. All three clutch packs are splined to a common shell at their outer diameter. One of the clutch pistons passes through openings in the clutch pack of one of the other clutches. The common shell is fixedly coupled to a hollow shaft through which the transmission input shaft protrudes. Pressurized fluid to engage the three clutches is routed through axial passageways in the input shaft. | 04-24-2014 |
20140166422 | TRANSMISSION CLUTCH ASSEMBLY - A clutch assembly is disclosed that combines a positively engaging dog clutch and one way clutch. The two devices are design such that the one way clutch never interferes with the engagement or disengagement of the dog clutch. In one embodiment, the one way clutch transmits torque in particular rotational positions and the dog teeth are circumferentially placed such that they do not engage in any of these positions. In another embodiment, the dog clutch piston, to which the teeth are secured, is permitted to rotate enough to accommodate any interference between dog teeth during engagement. In either embodiment, the teeth faces that transmit torque in the same direction as the one way clutch may be angled such that torque in that direction tends to disengage the dog clutch. | 06-19-2014 |
20140179487 | Multiple Speed Transmission With Integrated Low Range - A transmission gearing arrangement includes four simple planetary gear sets, three brakes, and four rotating clutches. The brakes and clutches may be engaged in combinations of three to establish at least ten forward transmission ratios and at least three reverse transmission ratios. The lowest forward transmission ratio and lowest reverse transmission ratio may be used to implement a low range mode, obviating the need for a two speed transfer case. | 06-26-2014 |
20140235399 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangement produces at least nine forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. One embodiment includes four simple planetary gear sets, three clutches, and three brakes. Another embodiment includes four axis transfer gear pairs, two simple planetary gear sets, five clutches, and one brake. | 08-21-2014 |
20140296022 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangement includes four simple planetary gear sets arranged in two planes to reduce axial length. Six shift elements, including two input clutches, two output clutches, and two brakes, are engaged in combinations of three to establish nine forward speed ratios and one reverse speed ratio. The two output clutches may be assembled into a module suitable for testing before installation. | 10-02-2014 |
20140318272 | Sensor Packaging at Output Side of Front Wheel Drive (FWD) Transmissions - Various packaging designs for placement of a magnetic torque sensor at the output shaft of a front wheel drive transmission are provided. One design provides for mounting a sensor on a chain drive sprocket or integrating a sensor into a modified sprocket bearing mount. Another design provides for mounting a sensor at the grounded ring gear of a final planetary drive. Another design provides for mounting a sensor at the differential housing. Another design provides for mounting a sensor at the output planetary carrier hub/park gear. Another design provides for mounting a sensor at a multi-piece transfer gear face. | 10-30-2014 |
20140335993 | MULTIPLE SPEED TRANSMISSION AND METHOD OF OPERATION - A family of transmissions has four planetary gear sets, five controllable clutches and brake, and a passive one way brake. Selective engagement of the brakes and clutches in combinations of three produces eight forward speed ratios and one reverse speed ratio. The passive one way brake is engaged in the first forward speed ratio and overruns in the second through fifth forward speed ratios. | 11-13-2014 |
20140342869 | TRANSMISSION HAVING SELECTABLE POWER TRANSFER SHAFT - A front wheel drive transmission is adapted for all-wheel drive by the addition of a selectively engageable power take-off shaft. When a disconnect clutch is engaged, power may be transferred to rear wheels via a power take-off unit and a rear drive unit to improve vehicle mobility. When the disconnect clutch is disengaged, various components of the all-wheel drive system do not rotate, reducing parasitic losses and improving fuel economy. To provide packaging space for the disconnect clutch, the differential is moved to the left (driver side) of the driven transfer gear. A planetary differential, such as a double pinion planetary differential, is suitable for this location | 11-20-2014 |
20140371024 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangement produces nine forward speed ratios and one reverse speed ratio by selective engagement of three shift elements in various combinations. Two planetary gear sets are configured to rotate about an input axis while two planetary gear sets are configured to rotate about a second axis. Power is transferred from the input axis to the second axis by two pairs of axis transfer gears. The output element is located on the second axis. | 12-18-2014 |
20140371027 | MULTIPLE CLUTCH MODULE - A multiple clutch module for an automatic transmission integrates at least two multi-plate wet clutches into a single module. Each of the clutches includes a set of separator plates interleaved with at least one friction plate and a piston configured to compress the separators plates and friction plates. The separator plates of the first clutch are splined to a housing along their inner diameter whereas the separator plates of the second clutch are splined to the housing along their outer diameter. Each piston is associated with an apply chamber and a balance chamber radially inside the respective separator plates and friction plates. The housing rotates about a central shaft. Pressurized fluid is supplied to the clutches from the shaft. The first and second balance chambers are connected by a passageway within the housing such that they can be supplied with fluid from a common orifice in the housing. | 12-18-2014 |
20140378265 | TRANSMISSION WITH INTEGRATED CLUTCH AND GEAR SET - A transmission includes a simple planetary gear set and several clutches. A first clutch selectively couples the carrier of the planetary gear set to a first shell. The housing of the first clutch is integrated with the planetary carrier. A piston return spring extends axially to occupy space between the planet gears. A second and third clutch share a common housing that is fixedly coupled to the ring gear. The second clutch selectively couples the ring gear to the sun gear. The third clutch selectively couples the ring gear to a second shell. The planetary gear set is axially located between the two clutch housings. | 12-25-2014 |
20150087473 | MULTI-SPEED TRANSMISSION - A transmission gearing arrangement has four simple planetary gear sets and five or six shift elements. One embodiment has two brakes and three clutches and produces eight speeds by selective engagement of various combinations of three of the shift elements. A second embodiment has two brakes and four clutches and produces nine speeds by selective engagement of various combinations of four of the shift elements. A third embodiment has two brakes and four clutches and produces ten speeds by selective engagement of various combinations of four of the shift elements. | 03-26-2015 |