Patent ID: 6059059
Filing Date: 2000-05-09
Classification: B60K,B60L,B60W,F16H,Y02T,Y10S

Abstract:
A drive arrangement for a motor vehicle having a plurality of driving wheels, comprising:an internal combustion engine connectable in a wheel-driving manner along a first torque transmission path to at least one driving wheel of the motor vehicle;a first electric machine operable as a motor and connectable in a wheel-driving manner along a second torque transmission path to at least one driving wheel of the motor vehicle;an energy source for supplying power to said first electric machine;a coupling arranged in at least one of the first and second torque transmission paths and switchable between a first operating state and a second operating state, wherein in the first operating state the motor vehicle is driven by the wheel-driving torque of said first electric machine without mechanical torque support from said internal combustion engine, and in the second operating state the motor vehicle is driven by the wheel-driving torque from said internal combustion engine without mechanical torque support from said first electric machine;an electronic driving control system for activating one of said operating states based on a signal representing a driving speed of the motor vehicle, said electronic driving control system activating the first operating state, at least in a first range of driving speeds, that includes a standstill of the motor vehicle, if the driving speed is less than a predetermined speed limit, and activating the second operating state, at least in a second range of driving speeds that includes a maximum speed of the motor vehicle, if the driving speed is greater than the predetermined speed limit; anda second electric machine operable as at least one of a motor and a generator, said second electric machine being connected in parallel to said first electric machine, said second electric machine operates as a motor at least in a portion of the second range of driving speed.