Reducing load change impact for vehicle with sub-frame involves accelerating the sub-frame during acceleration and braking it before it impacts on the body

摘要

The method involves accelerating the sub-frame (20) during acceleration and braking it before it impacts on the body (29). For transitions from engine braking to traction operation the sub-frame is accelerated by an increase in the torque output by the drive engine and braked with a reduction in the torque output by the drive engine (10).