Abstract: A multi-stage automatic transmission comprises a drive input shaft (AN), a drive output shaft (AB), a double planetary transfer gearset (VS), a main gearset (HS) made as a coupled planetary gearset with at least three non-coupled input elements and one output element, and six shift elements (A to F), which, when engaged in pairs, enable at least eight forward gears to be engaged. An input element of the transfer gearset (VS) is connected with the drive input shaft (AN). An output element of the transfer gearset (VS) rotates at a speed lower than the input speed of the drive input shaft (AN). An element of the transfer gearset (VS) is fixed on a transmission housing (GG). The first input element of the main gearset (HS) can be connected via a second shift element (B) to the output element of the transfer gearset (VS), can be fixed by a third shift element (C), and can be connected with the drive input shaft (AN) by a sixth shift element (F).

Abstract: A disk carrier which has a locking profile for receiving a disk assembly that can be axially fixed by a snap ring inserted in a groove. The locking profile and the groove are produced by non-cutting shaping. The groove has a groove base and two groove flanks and the snap ring has two faces. The groove flank supporting the snap ring is provided with an undercut having an angle of inclination ?. Both groove flanks are arranged in parallel relative each other. The groove is produced by punching using a punch knife which is radially guided in a slanted plane that is tilted by the angle of inclination a relative to a radial plane. The faces of the snap ring are conical and have an angle of inclination ?, whereby ??? and the maximum diameter of the snap ring is located in the area of the groove base.

Abstract: A multi-stage automatic transmission comprising a drive shaft (AN), a double planetary front mounted gear set (VS), a main gear set (HS) which is embodied as a coupled planetary gear set comprising at least three non-coupled input elements and an output element, in addition to six switch elements (A to F). Engagement of the six switch elements (A to F) takes place in pairs thereby enabling at least eight forward gears to be shifted. One element of the front mounted gear set (VS) is determined on a housing (GG). The second and the sixth shift element (B, F) form a component which is arranged on the side of the front mounted gear set (VS) which is oriented away from the main gear set (HS) and is arranged in an at least partially axial manner, between the front mounted gear set (VS) and a housing wall (GW), which is secured to the gear housing and which extends in a radial manner.

Abstract: A drive train (1, 30) for a hybrid vehicle, in which an internal combustion engine (2) is drive-technologically connected to a disengagement clutch (4) whose output side is connected to a transmission input shaft (7), which is connected to an input element (8, 38) of an automatic transmission (17, 36), and in which the transmission input shaft (7) can be driven by an electric machine (5) and itself drives a hydraulic pump (6), which is drive-technologically arranged after the disengagement clutch (4) and before a shiftable starting element (F) of the automatic transmission (17, 36).

Abstract: The invention concerns an automatic gearbox, with a drive input shaft (3) which is connected to a shiftable reduction planetary gear set (10), with a drive output shaft (4) which is connected to a shiftable main planetary gear set (30), and with five shifting elements (A to E) by the selective closing of which six forward speeds can be engaged without range change. An output element of the reduction planetary gear set (10) can be connected via a first shifting element (A) to a first input element of the main planetary gear set (30) and via a second shifting element (B) to a second input element of the main planetary gear set (30). The drive input shaft (3) can be connected via a fifth shifting element (E) to a third input element of the main planetary gear set (30). A solar gear wheel (11) of the reduction planetary gear set (10) is in particular fixed on a cylindrical projection (43) of a gearbox housing wall (41).

Abstract: A planetary transmission with a planetary gearset (RS1), having a satellite carrier with planetary gearwheels (11, 14), mounted bolts (12, 15) attached to the satellite carrier. The satellite carrier comprises a web plate (17) via which lubricant is fed to the planetary gearwheels (11, 14) through lubricant bores in the bolts (12, 15) of the planetary gearwheels (11, 14). A structural element adjacent to the web plate (17) has no rotation speed relative to the web plate (17). A static-seal element (18) is arranged between the web plate (17) and the structural element adjacent to the web plate (17) above the bolts (12, 15) so that a lubricant chamber (109) is formed between the web plate (17) and the structural element adjacent to the web plate (17). Lubricant flows into this chamber (109), accumulates therein, and passes from the chamber (109) into the lubricant bores of the bolts (12, 15) of the planetary gearwheels (11, 14).

Abstract: A planetary transmission with a planetary gearset (RS1), having a satellite carrier with planetary gearwheels (11, 14), mounted bolts (12, 15) attached to the satellite carrier. The satellite carrier comprises a web plate (17) via which lubricant is fed to the planetary gearwheels (11, 14) through lubricant bores in the bolts (12, 15) of the planetary gearwheels (11, 14). A structural element adjacent to the web plate (17) has no rotation speed relative to the web plate (17). A static-seal element (18) is arranged between the web plate (17) and the structural element adjacent to the web plate (17) above the bolts (12, 15) so that a lubricant chamber (109) is formed between the web plate (17) and the structural element adjacent to the web plate (17). Lubricant flows into this chamber (109), accumulates therein, and passes from the chamber (109) into the lubricant bores of the bolts (12, 15) of the planetary gearwheels (11, 14).

Abstract: A system and method for supplying cooling fluid for frictional elements, for example multiple disc clutches and multiple disc brakes, in automatic transmissions. The cooling fluid flows through the multiple disc clutch or brake in a predefined manner radially inward or outward, whereby a defined flow through the clutch or brake packet is ensured through a defined pressure difference in the cooling fluid between the cooling fluid supply and the discharge of the cooling fluid. A preferred embodiment of device for supplying the cooling fluid is designed as a ring-shaped channel that partially or fully encloses the clutch or the brake.

Abstract: The invention concerns an automatic gearbox, with a drive input shaft (3) which is connected to a shiftable reduction planetary gear set (10), with a drive output shaft (4) which is connected to a shiftable main planetary gear set (30), and with five shifting elements (A to E) by the selective closing of which six forward speeds can be engaged without range change. An output element of the reduction planetary gear set (10) can be connected via a first shifting element (A) to a first input element of the main planetary gear set (30) and via a second shifting element (B) to a second input element of the main planetary gear set (30). The drive input shaft (3) can be connected via a fifth shifting element (E) to a third input element of the main planetary gear set (30). A solar gear wheel (11) of the reduction planetary gear set (10) is in particular fixed on a cylindrical projection (43) of a gearbox housing wall (41).

Abstract: A drive train (1, 30) for a hybrid vehicle, in which an internal combustion engine (2) is drive-technologically connected to a disengagement clutch (4) whose output side is connected to a transmission input shaft (7), which is connected to an input element (8, 38) of an automatic transmission (17, 36), and in which the transmission input shaft (7) can be driven by an electric machine (5) and itself drives a hydraulic pump (6), which is drive-technologically arranged after the disengagement clutch (4) and before a shiftable starting element (F) of the automatic transmission (17, 36).

Abstract: A process of manufacturing a component for a hydrodynamic machine in which the component comprises a base body (16) and a plurality of blades (8) which are to be installed on the base body (16). The process comprises the steps of installing the plurality of blades (8) on the base body (16) by a shaped fitted connection with the base body (16) by applying continuous pressure against the base body (16) and using a prefabricated torus as the base body (16). The prefabricated torus is pressed by a pressure roller (20) against the plurality of blades (8) while holding the plurality of blades (8) in a device (4) against the pressure of the pressure roller (20). A component for a hydrodynamic machine, comprising a base body (16) and a plurality blades (8) installed by the inventive process, is also disclosed.

Abstract: A system and method for supplying cooling fluid for frictional elements, for example multiple disc clutches and multiple disc brakes, in automatic transmissions. The cooling fluid flows through the multiple disc clutch or brake in a predefined manner radially inward or outward, whereby a defined flow through the clutch or brake packet is ensured through a defined pressure difference in the cooling fluid between the cooling fluid supply and the discharge of the cooling fluid. A preferred embodiment of device for supplying the cooling fluid is designed as a ring-shaped channel that partially or fully encloses the clutch or the brake.

Abstract: The method for producing a planet carrier for a planetary gear which has one spider shaft (1) and two guide plates (2, 3) disposed parallel to each other consists in that the guide plates (2, 3) are produced as precision blanked parts and that each of two guide plates (2, 3) located upon the spider shaft (1) are interconnected in one stroke in a pressing process via rivets (4), that in the shoulders (9) of the rivets (4) provided with tappets (5) annular projections (7, 8) are fashioned and that the tool (6) of the press impinging on the guide plates (2, 3) in direction of the shoulders (9) is provided with an annular projection (7) adapted to the annular projection.

Abstract: The invention relates to a method for producing components with a blade mounting in hydrodynamic machines and to components produced according to this method, comprising a base body (16) and a number of blades (8) to be connected to said base body (16). The blades (8) are connected to the base body (16) with a positive fit by a constantly rotating pressure roller (20), with contact pressure also being constantly exerted on the base body (16).

Abstract: The multi-step automatic transmission with a number of clutches and brakes which at least partly are designed as wet-running, multi-disk clutches wherein with each clutch is associated a hydraulic piston (1), is provided with a baffle plate (2) for the fluid within or outside the clutch for adapting the shifting forces to low torques so that an additional pressure chamber (3) is formed which does not impair the total stroke of the piston (1).

Abstract: In a pump drive for a motor vehicle automatic gearbox, a hollow shaft (6) secured in rotation to a primary part (3) of a torque converter (1) projects into the inside of a pump housing (7) and bears an impeller (10) of the pump. The hollow shaft (6) is borne in a bore (12) in the pump housing (7) via a rolling bearing, whereby, in order to seal the pump housing, there is a radial sealing ring (18) on one side of the rolling bearing and a sealing ring (14) on the other. The latter ring (14) is designed to enclose a uniform sealing gap (25) with the hollow shaft (6) and it is guided freely both radially and axially in the bore (12) so that the sealing gap (25) may automatically set itself.