ASSISTED STEERING SYSTEM FOR NON-TRACKBOUND VEHICLES.

摘要

PCT No. PCT/DE92/00859 Sec. 371 Date Jun. 20, 1994 Sec. 102(e) Date Jun. 20, 1994 PCT Filed Oct. 6, 1992 PCT Pub. No. WO93/08063 PCT Pub. Date Apr. 29, 1993.Steering is actively assisted in a turning motor vehicle including a hybrid drive having both an internal combustion engine and a generator unit. The inner and outer wheels are each associated with an individual drive which is controlled in accordance with the steering angle of the steered wheels. Specifically, the torque differential is adjusted such that the percentage actual wheel differentials approach the percentage reference wheel speed differentials. A substantial reduction in the force which must be applied via the steering system to adjust the steering wheels, as compared to an absence of torque differential, is achieved because the outer wheel is driven at a higher output than the inner wheel when making a turn.