초록 ▼

A hybrid drive system for a four-wheel drive system arranged to supply motive power to a transfer case from an internal combustion engine and/or an electric motor/generator. The transfer case is comprised of a planetary gearset having a first input driven by the motor/generator, a second input drive

A hybrid drive system for a four-wheel drive system arranged to supply motive power to a transfer case from an internal combustion engine and/or an electric motor/generator. The transfer case is comprised of a planetary gearset having a first input driven by the motor/generator, a second input driven by the engine, and an output directing drive torque to the front and rear drivelines. The output of the planetary gearset drives a rear output shaft connected to the rear driveline and further drives a front output shaft connected to the front driveline. The transfer case further includes a second planetary gearset having an input driven by the motor/generator and an output driving the first input of the first planetary gearset. This hybrid drive arrangement permits use of a modified transfer case in place of a conventional transfer case in a traditional four-wheel drive driveline.

대표청구항 ▼

1. A transfer case for use in a motor vehicle having an engine and first and second drivelines, comprising:an input member adapted to be driven by the engine; a first output shaft adapted to be connected to the first driveline; a second output shaft adapted to be connected to the second driveline; a

1. A transfer case for use in a motor vehicle having an engine and first and second drivelines, comprising:an input member adapted to be driven by the engine; a first output shaft adapted to be connected to the first driveline; a second output shaft adapted to be connected to the second driveline; an input clutch operable in an engaged mode to rotatively couple said first output shaft to said input member and in a released mode to release said first output shaft from engagement with said input member; an input brake operable in a released mode to permit rotation of said input member and in an engaged mode to brake said input member against rotation; a planetary gearset having a sun gear, a ring gear fixed to said input member, and pinion gears meshed with said ring gear and said sun gear, said pinion gears are rotatably supported on a pinion carrier which is fixed to said first output shaft; a transfer unit coupling said pinion carrier to said second output shaft; and an electric motor for selectively driving said sun gear.