Abstract:
The ongoing monitoring of marine diesel engines helps to detect the deviations of its
parameters early and prevent major failures. But the experimental diagnostics data are generally
limited, so frequently, it isn’t possible to get all the necessary information to make a clear decision.
The mathematical simulation could be used to clarify the experimental data and to provide a deeper
understanding of engine conditions. In this paper, the MAN 6L80MCE marine diesel engine of “Father
S” bulk carrier diagnostics issues are considered. The diagnostics data were collected with DEPAS
Handy equipment and present the information about indicated processes by every engine cylinder. The
on-line resource Blitz-PRO was used for the simulation of the engine operation and helped to prove
that the variation in exhaust valve’s closing timing is responsible for the observed compression pressure
difference, while the irregularity in fuel injection causes the considerable difference in the maximum
pressure.
