F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 61/02 (2006.01) F16H 61/06 (2006.01) F16H 59/70 (2006.01)
Patent
CA 2302822
The invention concerns a method for adjusting the smooth engagement of a gear ratio shift wherein a planetary train (7) is engaged in direct gear by the action of centrifugal counter-weights (29) locking a clutch (18). The clutch release can be derived either from a hydraulic actuator (18) or from axial reactive forces of the ring helical toothing, reaction which is transmitted by an axial stop (B2). In order to prevent the clutch (18) from being suddenly locked by the action of the counter-weights (29) in particular when the torque to be transmitted quickly disappears, a control unit (453) detects the instantaneous ratio (V¿E?/V¿S?), and generates measured back pressure in the actuator (45) while the counter-weights (29) are locking the clutch (18). The invention is useful for adjusting the smooth engagement of gear ratio shifts.
Un train épicycloïdal (7) passe en prise directe sous l'action de masselottes centrifuges (29) serrant un embrayage (18). Le desserrage de l'embrayage peut provenir soit d'un actionneur hydraulique (45) soit de forces de réaction axiale de la denture hélicoïdale de la couronne (8), réaction transmise par une butée axiale (B2). Pour éviter une fermeture brutale de l'embrayage (18) sous l'action des masselottes (29) notamment en cas de disparition rapide du couple à transmettre, une unité de commande (453) détecte le rapport instantané (VE, VS), et génère une contre-pression dosée dans l'actionneur (45) pendant que les masselottes (29) sont en train de serrer l'embrayage (18). Utilisation pour réguler la progressivité des changements de rapports.
Antonov Automotive Technologies B.v.
Fetherstonhaugh & Co.
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