Power transmitting system for a four-wheel drive motor vehicle

摘要

A central differential has first and second output members for distributing power of an engine through a transmission to front and rear wheels respectively, and has a third output member for controlling distribution of the power. A first friction clutch is operatively connected to the first and second output members for restricting differential operation of the central differential and for controlling distribution of the power to the front and rear wheels. A second friction clutch is operatively connected to the second output member and either the front or rear wheels. A brake is provided for braking the second output member for providing a higher speed gear ratio than that of the smallest gear ratio of said transmission and to improve driveability of said vehicle.