Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque-transmitting devices. Further, a hydraulic fluid control circuit is provided for controlling the operation of the plurality of torque-transmitting devices. The hydraulic fluid control circuit receives pressurized hydraulic fluid from an off-axis hydraulic fluid pump and has a plurality of fluid passages disposed in the transmission house, input shaft, output shaft and other coupling members.

Abstract: A transmission includes a transmission case, which defines a generally cylindrical bore that is sufficiently configured to pilot a fastening block member therein. A generally annular groove is defined by the transmission case and is sufficiently dimensioned to receive a snap ring. The snap ring operates to limit the axial movement of the fastening block member with respect to the generally cylindrical bore. An extension housing having a hub portion is also provided. A flange portion extends generally radially outward from the hub portion. The flange portion defines at least one bore that is sufficiently configured to receive a threaded fastener. Similarly, the fastening block defines at least one threaded bore sufficiently axially aligned and configured such that the fastener can threadingly engage the fastening block to secure the extension housing with respect to the case.

Abstract: The present invention provides an assembly for use in a transmission that includes a first rotating member having a first portion and a second portion, the second portion having an outer diameter greater than an outer diameter of the first portion and having a bore with an open end. An annulus has a port for providing a fluid and is disposed proximate to the first portion. A second rotating member is at least partially located within the bore and extends from the open end. A first passage is connected to the port of the annulus and a second passage is connected to the first passage. The second passage is located through the second portion. A third passage is connected to the second passage and is located in the second rotating member. Fluid is able to flow from the port through the passages to provide fluid to the second rotating member.

Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing.

Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing.

Abstract: A transmission is provided having an input member, an output member, four planetary gear sets, a plurality of coupling members and a plurality of torque transmitting devices. Each of the planetary gear sets includes a sun gear member, a planet carrier member, and a ring gear member. The torque transmitting devices include clutches and brakes arranged within a transmission housing.

Abstract: The present invention provides a method and apparatus for cooling and lubricating a pinion bearing of an automatic transmission. The apparatus preferably includes a carrier assembly partially defining a centrifugal compensation oil reservoir. A pinion shaft is supported by the carrier assembly. The pinion shaft defines an internal channel in fluid communication with the oil reservoir. The apparatus of the present invention also includes a generally annular pinion gear member circumscribing at least a portion of the pinion shaft, and a pinion bearing disposed radially between the pinion shaft and the pinion gear member. The pinion bearing is adapted to facilitate rotation of the pinion gear member relative to the pinion shaft. The pinion bearing is aligned with the channel such that oil transferred therethrough is applied to the pinion bearing, and the pinion bearing is accordingly cooled and lubricated by the oil. A corresponding method for cooling and lubricating the pinion bearing is also provided.

Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing. The torque-transmitting mechanisms are selectively engagable in different combinations to achieve eight forward speed ratios and a reverse speed ratio between the input member and the output member.

Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing. The torque-transmitting mechanisms are selectively engagable in different combinations to achieve eight forward speed ratios and a reverse speed ratio between the input member and the output member.

Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing. The torque-transmitting mechanisms are selectively engagable in different combinations to achieve eight forward speed ratios and a reverse speed ratio between the input member and the output member.

Abstract: A multi-speed transmission has four planetary gear sets and five torque-transmitting mechanisms packaged in at least one of six possible zones within the transmission casing. The torque-transmitting mechanisms are selectively engagable in different combinations to achieve eight forward speed ratios and a reverse speed ratio between the input member and the output member.

Abstract: A clutch assembly has a hub and a piston interlaced to provide an operating chamber for the piston. A plurality of friction plates are in alternate drive connection with the hub and a housing surrounding the hub, and are engaged by the piston when the chamber is pressurized to establish a friction torque transmitting connection between the hub and the housing.

Abstract: A retainer embodying the concepts of the present invention is adapted for releasably securing a splined radially innermost rotatable member to a splined radially outermost rotatable member. The retainer so secures the rotatable members in order to preclude relative axial displacement therebetween. The retainer has a body portion. A first stop surface is presented from the body portion to engage one of the rotatable members and thereby preclude relative axial movement between the body portion and that rotatable member in one axial and directional frame of reference. A first dog extends outwardly from the body portion to engage the same rotatable member engaged by the first stop surface and thereby preclude relative axial movement between the body portion and that rotatable member in the opposite axial and directional frame of reference.