Two-stroke cycle and four-stroke cycle diesel engines are in
use in rail traction with four-stroke cycle design dominating
Cycle simulation by computer programmes have
shown that the conventional two-stroke cycle is inferior
to its four-stroke cycle counterpart in combustion efficiency
and thermal loading. Research at Sulzer Brothers Ltd.,
to decide on the choice of cycle for production of a
high power locomotive engine concluded that. conventional
two-stroke cycle engine is not suitable for locomotive
application. A report by Ricardo Ltd., based on a
survey of engines in current production for traction application
suggested that there are potentials in two-stroke cycle
This research project is concerned with comparison of
two well proven locomotive engines, one of two-stroke
cycle and the other of four-stroke cycle.
Performance, mechanical loading, thermal loading and
vibration were chosen as parameters to be investigated
to provide information about the status of the two cycles
in relation to lower range, fuel consumption, reliability
and durability, with a view to assist the users of
locomotive engines to make the correct choice.
Results and analysis of these findings are presented. A Master's Thesis. Submitted in partial fulfilment of the requirements for the award of Master of Philosophy of Loughborough University.
Sudan Railways Corporation and the British Council.