Marine indicator EPM-XPplus

pressuredigitalengine

Vibration diagnostics on marine diesel engines with IMES EPM-XPplus engine analyser The well-proven engine analyser EPM-XPplus offers now the possibility of additional vibration measurements on engines. A vibration sensor was specifically developed by IMES. For application it will be electrically connected on one side to the hand-held device via a cable and on the other side via a magnetic holder to the injector or pump. The subsequent evaluation of the measured data will be processed by the EPM-XPplus visualisation software. By regular measurements during engine operation with the EPM-XPplus without vibration sensor the engineer can detect occurrent failure. Possible causes of failure could be a deviation from the mean indicated pressure (MIP), the peak pressure (Pmax) or compression pressure (Pcomp). The failure can be immediately identified by the analysis of the indicator diagrams. However, there are a number of effects that are very hard to identify only by analysing the indicator diagrams, especially failure at the high-pressure fuel system and failure at the control of the inlet valve and exhaust valve. With the existing procedure of the cylinder pressure indicator system, the exact point of fuel injection and the valve movement cannot be determined or only inexactly determined. A direct measurement of these processes is very extensive. The vibration sensor as part of the engine analyser EPM-XPplus offers advanced diagnostic options for marine engines. For direct measurement the vibration sensor will be e.g., magnetically installed on the injector