摘要:
The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a pressure medium supply (6) for the piston (I), a jaw (3) and a mating jaw (4) with which the jaw (3) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (4) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a hydraulic or pneumatic pressure reservoir (7) that is actively connected to the piston (I) and that is connected to the pressure medium supply (6). The gap between the jaws, i.e. the window into which the jaw (3) can be engaged is maintained as narrow as possible in order for a tooth butt position of the jaws (3) and (4) in relation to each other being highly probable when the shift element is applied.
摘要:
A power-shiftable transmission, in particular an automatic transmission for a vehicle, which comprises a plurality of frictional shifting elements and at least one interlocking shifting element (A, B, C, D, E) and a plurality of gearwheels which can be engaged in a power flow by the shifting elements (A, B, C, D, E). In order to engage a gear step, at least two associated shifting elements (A, B, C, D, E) are engaged and at least one interlocking shifting element (B), as a shifting element (B) to be engaged, is associated with a gear step to be engaged with a supporting gear.
摘要:
A multi-stage transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The carriers of gearsets (P1, P2) couple via shaft (4) which couples the sun gear of gearset (P3). The ring gear of the gearset (P1) couples the sun gear of gearset (P2) via shaft (8), which couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). The sun gear of gearset (P4) couples housing (G). Shaft (6) couples shaft (1) via clutch (16) and carrier of gearset (P3). Shaft (9) couples shaft (4) via clutch (49) and the ring gear of gearset (P4). Output shaft (2) couples the ring gear and the carrier respectively of gearsets (P3, P4).
摘要:
A power-shiftable transmission, in particular an automatic transmission for a vehicle, which comprises a plurality of frictional shifting elements and at least one interlocking shifting element (A, B, C, D, E) and a plurality of gearwheels which can be engaged in a power flow by the shifting elements (A, B, C, D, E). In order to engage a gear step, at least two associated shifting elements (A, B, C, D, E) are engaged and at least one interlocking shifting element (B), as a shifting element (B) to be engaged, is associated with a gear step to be engaged with a supporting gear.
摘要:
The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a pressure medium supply (6) for the piston (I), a jaw (3) and a mating jaw (4) with which the jaw (3) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (4) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a hydraulic or pneumatic pressure reservoir (7) that is actively connected to the piston (I) and that is connected to the pressure medium supply (6). The gap between the jaws, i.e. the window into which the jaw (3) can be engaged is maintained as narrow as possible in order for a tooth butt position of the jaws (3) and (4) in relation to each other being highly probable when the shift element is applied.
摘要:
A multi-stage transmission comprising planetary gearsets (P1, P2, P3, P4), shafts, and shift elements. Gearsets (P1, P2) form a front -mounted gear gearset and gearsets (P3, P4) form a main gearset. The carriers of gearsets (P1, P2) are coupled via shaft (4) which couples a main gearset element. The ring gear of gearset (P1) couples the sun gear of gearset (P2) via shaft (8) that couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). Shaft (7) couples main gearset element, and, via brake (07), housing (G). Shaft (6) couples another main gearset element and, via clutch (16), shaft (1). The output shaft couples a further main gearset element.
摘要:
A multi-stage transmission comprising planetary gearsets (P1, P2, P3, P4), shafts, and shift elements. Gearsets (P1, P2) form a front -mounted gear gearset and gearsets (P3, P4) form a main gearset. The carriers of gearsets (P1, P2) are coupled via shaft (4) which couples a main gearset element. The ring gear of gearset (P1) couples the sun gear of gearset (P2) via shaft (8) that couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). Shaft (7) couples main gearset element, and, via brake (07), housing (G). Shaft (6) couples another main gearset element and, via clutch (16), shaft (1). The output shaft couples a further main gearset element.
摘要:
A multi-stage transmission comprises planetary gearsets (P1, P2, P3, P4), shafts and shift elements. The carriers of gearsets (P1, P2) couple via shaft (4) which couples the sun gear of gearset (P3). The ring gear of the gearset (P1) couples the sun gear of gearset (P2) via shaft (8), which couples drive shaft (1) via clutch (18). The sun gear of gearset (P1) couples housing (G) by shaft (3) via brake (03), and shaft (1) via clutch (13). The ring gear of gearset (P2) couples housing (G) by shaft (5) via brake (05). The sun gear of gearset (P4) couples housing (G). Shaft (6) couples shaft (1) via clutch (16) and carrier of gearset (P3). Shaft (9) couples shaft (4) via clutch (49) and the ring gear of gearset (P4). Output shaft (2) couples the ring gear and the carrier respectively of gearsets (P3, P4).
摘要:
A transmission (1) having a plurality of frictionally engaging shift elements (A to C) which are engaged or disengaged in order to obtain various gear ratios. The permissible surface pressure in the area of friction surfaces of connecting elements (B, C) that can be brought into mutual frictional engagement, which are engaged during upshifts to produce a gear ratio, is lower than the permissible surface pressure in the area of friction surfaces of disconnecting elements (A) that can be brought into mutual frictional engagement which, in each case, are only disengaged during upshifts to produce gear ratios.
摘要:
The invention relates to a positively engaging shifting element which can be hydraulically or pneumatically actuated, comprising a hydraulically or pneumatically actuatable piston (I) having a piston compartment (2) containing a hydraulic medium or pressure medium, a jaw (3) having a dog-type gearing (4) and a mating jaw (5) with which the dog-type gearing (4) meshes when engaged. The engaging speed of the jaw (3) can be increased by decoupling the jaw (3) from the hydraulic or pneumatic volume flow when the jaws (3) and (5) are in a tooth butt position in relation to each other and by pretensioning the jaw (3) by means of a mechanical device (6) that is actively connected to the piston (I). The gap between the jaws, i.e. the window into which the jaw (3) can be engaged is maintained as narrow as possible in order for a tooth butt position of the jaws (3) and (5) in relation to each other being highly probable when the shift element is applied.