Rear-wheel-drive or four-wheel-drive shifting apparatus for a car

摘要

a propeller shaft (18) for transmitting the rotational force from the other end of the spindle (17); The electric gear 15 such that the engagement with the main shaft (17) mounted freely rotating on the driven gear 21; The spindle driving gear 21 to the main variable delivered to the rotational force from the clutch 17, 23; Suzaku pressing or releasing the main clutch (23) East (25); A pilot clutch (27) to form or remove a pilot torque for the agonists ET (25); And that the pilot clutch 27 is pressed or released by the pilot clutch (27) as the variably operated by a command of the controller 19 so as to variably forming or removing the pilot torque to said Agonists East 25 pilot operating unit (29); and characterized in that it comprises a transfer case made, including, according to the rear wheel drive while driving downhill or when switching a slippery road surface with the running pattern, even if the four-wheel drive wheel slip or loss of the driving force to meet the can be prevented or reduced, it is possible to improve the running stability ground floor. ;