Showing papers by "Scott H. Wittkopp published in 2007"

Multi-speed transmission

Abstract: A multi-speed transmission has three planetary gear sets and six torque-transmitting mechanism packaged in various ones of five zones within a transmission cavity. Each planetary gear set has a ring gear member, a sun gear member and a carrier member that rotatably supports a plurality of pinion gears that intermesh with both the sun gear member and the ring gear member. Certain members are continuously connected for common rotation. Specifically, an interconnecting member continuously interconnects for common rotation the carrier member of the first planetary gear set, the sun gear member of the second planetary gear set and the ring gear member of the third planetary gear set. Additionally, the sun gear member of the first planetary gear set is grounded to the transmission casing via a radially-extending structural member.

Selectable one-way clutch

Abstract: A controllable selectable one-way clutch is provided for use within a hybrid transmission. The clutch comprises an outer and inner race, and a first and second selector plate. A transmission motor controller synchronizes the speeds of the races to facilitate application and release of the clutch, and a transmission controller communicates a signal to the clutch for re-positioning of the plates to apply and release the clutch. The clutch has three operational modes, including freewheeling and holding torque in one direction or both directions. A method is also provided for applying a selectable one-way clutch in a vehicle having a hybrid transmission with a motor controller and a transmission controller, including synchronizing the clutch speed using the motor controller, detecting the direction of the race speed difference, communicating the race speed difference to the transmission controller, and selecting between the clutch operational modes in response to the detected speed difference.

Selectable one-way rocker clutch

Abstract: The present invention provides a selectable one-way rocker clutch assembly having an inner race disposed radially within an outer race, first and second plurality of rockers, a selector ring and an apply plate. The inner race defines a plurality of pockets configured to operatively retain the first and second plurality of rockers. The first plurality of rockers is configured to resist rotation of the outer race relative to the inner race in a first direction. The second plurality of rockers is configured to resist rotation of the outer race relative to the inner race in a second direction. The selector ring is disposed radially between the inner race and outer race. The apply plate is configured to engage with the selector ring and, in so doing, rotate the selector ring to thereby selectively retract the first and/or second plurality of rockers and thus control the state of the rocker clutch assembly.

9-Speed Transmission

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide nine forward speed ratios and one reverse speed ratio. The transmission includes four planetary gear sets, six torque-transmitting devices, and four fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish nine forward speed ratios and one reverse speed ratio.

8-speed transmission

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having six torque-transmitting mechanisms and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting mechanisms provide interconnections between various gear members, the transmission housing and with the input member, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.

Rocker Clutch Assembly

Abstract: A clutch assembly includes a first race and a second race that is selectively rotatable with respect to the first race about an axis of rotation. A plurality of rockers is operatively connected to the first race and spring biased into engagement with the second race to transmit torque between the first and second races. A member is selectively translatable between first and second positions to control the ability of the rockers to transmit torque between the first and second rockers, and thereby to control the ability of the races to rotate relative to one another.

10-speed transmission

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide ten forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, and two fixed interconnections. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish ten forward speed ratios and one reverse speed ratio.

One-way clutch with dog-clutch and synchronizer

Abstract: A clutch assembly is provided for use in a vehicle having an automatic transmission, the assembly including a clutch-apply piston and an integrated one-way clutch, dog clutch apply plate, and synchronizer clutch having a synchronizer plate and a rotating synchronizer cone. The clutch assembly is actuated by a clutch-apply piston configured to axially displace the dog clutch apply plate, thereby engaging the synchronizer plate with the rotating synchronizer cone to synchronize the respective speeds of the synchronizer plate and dog clutch apply plate during a gear shifting event. Upon speed synchronization, continued axial displacement of the clutch-apply piston completes engagement of the dog clutch apply plate to achieve a coast gear state. A return spring provides a return spring force for disengaging the clutch apply piston to permit selection of an alternate gear state during a subsequent gear shifting event.

One way clutch and synchronizer assembly

Abstract: A one way clutch and synchronizer assembly includes a stationary member having a plurality of clutch struts and camming surfaces, a second circular selector member, an third rotating controlled member and a fourth stationary member. The selector member includes apertures or windows through which the clutch struts may pass to engage the rotating member and camming surfaces which provide a selective frictional coupling between the stationary members and the rotating member. A bi-directional hydraulic or electric actuator selectively, bi-directionally rotates the selector member.

Transmission Filter System

Abstract: A low profile transmission filter system is provided that is connectable between a transmission casing and an oil pan. The filter system includes a filter housing with an open bottom and a flange there around and forming a tubular opening opposite the open bottom. A seal member is secured along the flange and has two ends spaced from one another to define a gap there between. The seal member compresses against an inner surface of the oil pan when the oil pan is connected to the transmission casing to define a filter cavity within the filter housing with an inlet at the gap.

8-Speed Transmission With Two Fixed Interconnections

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having six torque-transmitting devices and three fixed interconnections. The powertrain includes an engine and torque converter that is selectively connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, the transmission housing and with the input member, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.

Dual one-way clutch assembly

Abstract: A device for transmitting torque between a first component and a second component is provided. The device includes a first race coupled to the first component and a second race coupled to the second component. The second race is disposed concentrically with the first race. A first rocker is pivotally connected to the first race and is moveable to rotationally fix the first race to the second race to transfer torque therebetween. A second rocker is pivotally connected to the first race and is disposed axially adjacent to the first rocker. The second rocker is moveable to rotationally fix the first race to the second race to transfer torque therebetween. A selector ring is disposed between the first race and the second race. The selector ring is moveable to engage the first rocker to prevent the first rocker from engaging the second race.

Fluid transfer insert

Abstract: A shaft assembly includes a fluid transfer insert located within a bore of a shaft. The fluid transfer insert seals to the shaft and includes at least one fluid channel that communicates between a plurality of fluid ports located in the shaft. The fluid channel is defined by an outer surface of the fluid transfer insert.

8-Speed Transmissions

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets, six torque-transmitting devices, one fixed interconnection and a grounded member. The powertrain includes an engine and torque converter that is continuously connected to one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The six torque-transmitting devices provide interconnections between various gear members, and the transmission housing, and are operated in combinations of three to establish eight forward speed ratios and one reverse speed ratio.

8-Speed Transmission With Two Fixed Interconnections and One Grounded Member

Abstract: The transmission has a plurality of members that can be utilized in powertrains to provide eight forward speed ratios and one reverse speed ratio. The transmission includes three planetary gear sets having five torque-transmitting mechanisms, two fixed interconnections and a grounded member. The powertrain includes an engine and torque converter that is continuously connected to at least one of the planetary gear members and an output member that is continuously connected with another one of the planetary gear members. The five torque-transmitting mechanisms provide interconnections between various gear members, and with the transmission housing, and are operated in combinations to establish eight forward speed ratios and one reverse speed ratio.

Adapter Ring For Transmission Case To Engine Connection

Abstract: A transmission casing adapter ring is provided that enables a transmission having a common outer casing to be operatively connected to an engine, thus enabling different engines to be used with the common transmission outer casing simply by changing the adapter ring. The adapter ring allows a novel method of assembling a powertrain that permits assembly of the transmission with a generic (i.e., common) type of casing prior to a determination of the engine type or types to be used with the transmission. The adapter ring is aluminum, the transmission case is magnesium, and the engine is cast iron.

Adapter Ring for Transmission Pump Assembly to Engine Connection

Abstract: A transmission pump adapter ring is provided that enables a transmission pump assembly to be operatively connected to an engine, thus enabling a common transmission pump assembly to be used in a given type or types of transmissions while enabling different engines to be used with the transmission simply by changing the adapter ring. The adapter ring allows a novel method of assembling a powertrain that permits assembly of the transmission with a generic (i.e., common) type of pump assembly prior to a determination of the engine type or types to be used with the transmission.

Transmission i.e. eight-gear transmission, has connecting units, and six torque transmission mechanisms selectively engaged in combinations of three for producing eight forward gears and reverse gear between drive unit and output shaft

Abstract: The transmission (10) has two connecting units (34, 35) for connecting two knots (22, 24) of a planetary gear set (16) with two respective knots (42, 44) of another planetary gear set (18). Six torque transmission mechanisms are selectively engageable for connecting respective knots with each other. The mechanisms are selectively engaged in combinations of three for producing eight forward gears and a reverse gear between a drive unit (12) and an output shaft (14). The drive unit is connected with a knot (56) of a third planetary gear set (20).

Multi-speed transmission device

Abstract: PROBLEM TO BE SOLVED: To provide a cost-effective and compact multi-speed transmission device. SOLUTION: A transmission device having an input member, an output member, a plurality of planetary gear sets, a plurality of interconnection members and a plurality of torque transmission structures is disclosed. The plurality of planetary gear sets have a first, a second and a third member. The input members are mutually connected successively to the members of the planetary gear sets. The output members are mutually connected successively to other members of the planetary gear sets. At least eight front speeds and one reverse speed are generated by selectively engaging five torque transmission structures. COPYRIGHT: (C)2008,JPO&INPIT

Einwegkupplung mit Klauenkupplung und Sychronisiereinrichtung

Abstract: Einwegkupplungsanordnung (46) zur Verwendung in einem Fahrzeug (10) mit einem Automatikgetriebe (16), wobei die Anordnung umfasst: einen Kupplungseinruckmechanismus (70); eine Einwegkupplung (31); eine Synchronisierkupplung (11) mit einer Synchronisierplatte (66); und eine Klauenkupplungseinruckplatte (38); wobei der Kupplungseinruckmechanismus (70) die Klauenkupplungseinruckplatte (38) axial versetzt, um dadurch die Klauenkupplungseinruckplatte (38) mit der Synchronisierplatte (66) in Eingriff zu bringen, und wobei die Synchronisierkupplung (11) ausgebildet ist, die jeweiligen Drehgeschwindigkeiten der Einwegkupplung (31) und der Klauenkupplungseinruckplatte (38) zu synchronisieren.

Return spring device and switching control mechanism for motor vehicle, has two springs provided under pressure between respective clamps and notches, where springs bring centre force to lever to move level between two neutral positions

Abstract: The mechanism has clamps (73, 74, 76) fastened at a fixed end of the control mechanism, and mounted at a gear box. The clamp (73, 76) bears respective springs (78, 86) and extensions (78A, 86A). The springs (78, 86) are provided under pressure between the respective clamps (73, 76) and notches (80, 88) that are formed in a shift lever (44). The arrangement of the springs brings resettable-or-centre force to the lever, so as to move the level from one neutral position into another neutral position. The lever is moved along a neutral rail through a third neutral position.

Backward/parking locking device for hand switched transmission control unit, has lever positioned in one position to lock movement of plate in predetermined position, where lever is pivotable in another position to allow plate movement

Abstract: The device has a switching control mechanism (12) and a wing plate. A hand switched lever (14) is mounted at a housing and a solenoid controls a pivoting movement of the lever relative to the plate. The lever is positioned in one position to lock a movement of the plate in a predetermined position, where the lever is pivotable in another position to allow movement of the plate in the predetermined position.