Concept of Vibroacoustic Diagnostics of the Fuel Injection and Electronic Cylinder Lubrication Systems of Marine Diesel Engines

Abstract Although direct measurements of the fuel injection pressure and travel injector needle in conjunction with valve train mechanism timing can provide complete diagnostic information about technical conditions systems, this requires installation sensors other equipment directly into which is possible within research laboratories but generally forbidden during operation ship. Malfunctions systems also be identified from indicator diagrams an engine operating cycle, expressed as P(V) P(deg) diagrams. The basic parameters such maximum combustion Pmax, compression Pcompr, indicated mean effective IMEP, used to indicate deviations proper operation. Using a combination vibration sensor in-cylinder gas widens capabilities diagnostics for marine diesel engines under operational conditions. A magnetic base help determining timings lifting landing needle, delivery by pump, opening closing circulation heated heavy oil, distribution valves. This offers promising solution cylinder lubrication oil injectors. proposed approach allows valuable received accordance principle non-destructive control, early detection malfunctions.