Drivetrain with hybrid transfer case

A transfer case for use in a motor vehicle having an engine and first and second drivelines, comprising:

• an input shaft adapted to be driven by the engine;
• a mainshaft;
• an input clutch for selectively coupling said shaft to said mainshaft;
• a first output shaft adapted for connection to the first driveline;
• a second output shaft adapted for connection to the second driveline;
• a planetary gearset having a sun gear driven by said mainshaft, a ring gear, and planet gears rotatably supported from a carrier and meshed with said sun gear and said ring gear, said carrier operably connected to said first output shaft and a transfer assembly;
• a direct clutch for selectively coupling said mainshaft to said carrier;
• a low brake for selectively braking rotation of said ring gear;
• a transfer clutch for transferring drive torque from said transfer assembly to said second output shaft;
• an electric motor for selectively driving said mainshaft;
• and
• a control system for controlling actuation of said input clutch, said direct clutch, said low brake and said electric motor.

A hybrid motor vehicle, comprising:

• a powertrain including an internal combustion engine and a transmission;
• a first driveline including a first axle driving a pair of first wheels;
• a second driveline including a second axle driving a pair of second wheels;
• a transfer case including an input shaft driven by said powertrain, a mainshaft, an input clutch for selectively coupling said input shaft to said mainshaft, a first output shaft operably connected to said first driveline, a second output shaft operably connected to said second driveline, a planetary reduction unit having a sun gear driven by said mainshaft, a ring gear and planet gears meshed with said sun and ring gears, said planet gears rotatably supported from a carrier which is fixed to said first output shaft, a transfer unit driven by said carrier, a direct clutch for selectively coupling said mainshaft to said carrier, a low brake for selectively braking rotation of said ring gear, a transfer clutch for selectively transferring drive torque from said transfer unit to said second output shaft, and an electric motor for driving said mainshaft;
• and
• a control system for controlling actuation of said input clutch, said direct clutch, said low brake and said electric motor for defining an electric drive mode, a hybrid drive mode and a powertrain drive mode.