Transient Response and Route Simulations for Heavy Vehicles with Alternative Engine-Transmission System

The paper describes the results of a study of the dynamic response of a 30 tonne truck equipped with two alternative engine-transmission systems, viz.

1. a)
   the stepless differential compound engine (DCE)
2. b)
   a highly turbocharged engine of the same rating with a 7 ratio stepped transmission.

The comparisons cover:

1. a)
   0 - 80 krn/hr acceleration using a true dynamic and a quasi dynamic technique
2. b)
   a cross country 9 km route.

The DCE is shown to have superior acceleration characteristics but route behaviour of the two systems is similar.