Abstract:
Synchronisationseinnchtung (1) für ein Getriebe, mit einer Schaltmuffe (3), einem Sperrsynchronring (4) und einem Schaltrad (6). In einem Kraftflussbereich (k) zwischen Sperrsynchronring (4) und Schaltrad (6) sind zur Erzeugung einer zur Welle (W) axialen Servokraft (F s ) an mindestens einem Bauteil Rampen (12) vorgesehen.
Abstract:
A transmission (12) for a vehicle (10) includes a gear shaft (24) having an external periphery (57) and a hub (54) The hub (54) is rotatably secured and axially moveably connected to the external periphery (57) of the gear shaft (24) and has a plurality of external teeth (62) The transmission (12) also includes a gear (56) connected to the gear shaft (24) An external periphery (66) of the gear defines teeth (67) The transmission further includes a shift collar (44) having a bore (64) through the shift collar (44) The shift collar (44) has internal teeth (65) that engage the teeth (62) of the hub (54) The gear and the shift collar (44) have a first configuration where all of the teeth (65) of the shift collar (44) are spaced from all of the teeth (67) of the gear (56).
Abstract:
A mechanism with an inner race, which has cams, an outer race and rollers between the cams and the outer race. The inner race has a first notch while the outer race has a second notch with a narrow portion and a wider portion. A member is disposed in the first and second notches. Positioning of the member in the first notch and the narrow portion of the second notch inhibits relative rotation between the inner and outer races and power is not transmitted between the outer race and a power transmitting member, such as a gear. Positioning of the member in the first notch and the wider portion of the second notch permits some relative rotation between the inner and outer races to cause the cams to urge the rollers outwardly so that the outer race frictionally engages the power transmitting member to facilitate transmission of rotary power therebetween.
Abstract:
Die Erfindung betrifft eine Getriebeschaltstelle (10) zum Herstellen einer drehfesten Verbindung zwischen einem Zahnrad (16, 18) und einer Welle (12). Die Getriebeschaltstelle (10) umfasst eine Welle (12), eine Schaltmuffe (24) und mindestens ein Zahnrad (16, 18). Das mindestens eine Zahnrad (16, 18) ist drehbar relativ zur Welle (12) gelagert. Die Schaltmuffe (24) ist auf der Welle (12) verdrehsicher gelagert. Das Zahnrad (16, 18) und die Schaltmuffe (24) sind derart ausgebildet, dass in einem geschalteten Zustand der Getriebeschaltstelle (10) zwischen dem Zahnrad (16, 18) und der Schaltmuffe (24) eine drehfeste Verbindung herstellbar ist und dass in einem neutralen Zustand der Getriebeschaltstelle (10) zwischen dem Zahnrad (16, 18) und der Schaltmuffe (24) keine drehfeste Verbindung herstellbar ist. Es soll eine Getriebeschaltstelle (10) zum Herstellen einer drehfesten Verbindung zwischen einem Zahnrad (16, 18) und einer Welle (12) angegeben und weitergebildet werden, welche kostengünstig ist und welche möglichst störfrei arbeitet. Die erfindungsgemäße Getriebeschaltstelle (10) ist dadurch gekennzeichnet, dass die Schaltmuffe (24) mindestens einen Elektromagneten (38, 40) aufweist und dass bei einer Aktivierung des Elektromagneten (38, 40) ein geschalteter Zustand der Getriebeschaltstelle (10) herstellbar ist.
Abstract:
The invention relates to a method (60; 80) for controlling an automatic multi-step variable speed transmission (16), in particular for motor vehicles, wherein said multi-step variable speed transmission (16) comprises a plurality of gear steps (24, 26, 36, 38), each of which sets up another transmission ratio, comprising the following steps consisting: a) in detecting (S1; T1, T3), whether a gear step (24, 26, 36, 38) is applied, b) in detecting (S2; T4) a real input value (n E ), which is substantially proportional to an input rotation speed (n E ) of the multi-step variable speed transmission and an output real value (n A ) which is substantially proportional to an output rotation speed (n A ) of the multi-step variable speed transmission, c) in verifying (S3; T4) whether a difference ( ? R) between the ratio of the real input and output values (n E , n A ) and the transmission ratio defined by the gear step (24, 26, 36, 38) is less than a predefined tolerance range (?R MAX ) for a predefined span of time (t 2 -t l ) and d) in determining (S4; T5-T7) an error condition in the case when the difference (?R) is not situated within said tolerance range (?R MAX ) for a predefined span of time (t 2 -t l ).
Abstract:
Es wird vorgeschlagen eine Synchronkupplung (10) für ein Kraftfahrzeug-Stufengetriebe, mit einer Führungsmuffe (14), die an einer Welle (12) festgelegt ist, und einem Synchronring (26), der in Bezug auf die Führungsmuffe (14) axial beweglich gelagert ist, wobei die Führungsmuffe (14) eine axiale Anlagefläche (36) aufweist, gegen die eine Axialfläche (42) des Synchronrings (26) anstossen kann, wenn dieser in einer Ruheposition ist, wobei die axiale Anlagefläche (36) und/oder die Axialfläche (42) wenigstens eine Vertiefung (46) aufweist, die für die generelle Funktion der Synchronkupplung (10) keine Bedeutung besitzt, jedoch in der Ruheposition die Kontaktfläche zwischen axialer Anlagefläche (36) und Axialfläche (42) verringert, so dass bei einer Axialbewegung des Synchronrings (26) weg von der Führungsmuffe (14) im wesentlichen keine Adhäsion aufgrund von Schmieröl auftritt.
Abstract:
A transmission system including first and second rotatable shafts, and means for transferring drive from one of the shafts to the other shaft including first and second gear wheels each rotatably mounted on the first shaft and having drive formations formed thereon, a selector assembly for selectively transmitting torque between the -first shaft and the first gear wheel and between the first shaft and the second gear wheel, wherein the selector assembly includes an actuator assembly and first and second sets of engagement members that are moveable into and out of engagement with the first and second gear wheels independently of each other, said selector assembly being arranged such that when a driving force is transmitted, one of the first and second sets of engagement members drivingly engages the engaged gearwheel, and. the other set of engagement members is then in an unloaded condition, wherein the actuator assembly is arranged to move the unloaded set of engagement members into driving engagement with the unengaged gear wheel to effect a gear change.
Abstract:
A power train for an amphibious vehicle (34, 74) comprises an engine (18) and transaxle (22) arranged North-South, driving front (fig. 8), rear, or all four road wheels. A power take off (PTO) with optional decoupler (42) and constant velocity joint (56, figs. 4 and 9) drives marine drive means (40). The PTO may be taken from the input shaft of the transmission (44, fig. 4), and may use a synchroniser (65, figs. 5 and 6). The transaxle includes differential (24). The rear wheels may be set back from the differential outputs (fig. 7), with intermediate drives (47, 47') by chains or belts. A sandwich type (PTO) may also be used (53, fig. 9). In the four wheel drive embodiment, a PTO is required from the rear differential (33'). Decouplers (43, 45) may be provided in at least one wheel drive shaft on each driven axle. Numeral (31) denotes a centre differential.
Abstract:
The invention relates to a synchronizing device (22) for clutches. According to the invention, the shift-back blocking surface (56) on the inner toothing (26) of the sliding sleeve (28) has a smaller axial extension (58) than the axial extension (60) of the shift-up blocking surface (54).
Abstract:
The invention relates to an electromagnetic shift arrangement, for a gearbox (2), with gearwheels (4, 6), arranged on a gearshaft (12), rotatable about an axis (20), which may be rotatably fixed to the gearshaft (12) to form a gear ratio, by means of an axial movement of a shift dog (18), along the axis (20). The electromagnetic device (24, 26, 40) is arranged close to the shift dog (18) and operates the shift dog (18) directly, without a shift fork.