Test rig description
The marine engine test rig mainly consists of a diesel engine, a gearbox, a propeller and its auxiliary test facilities. The speed of the engine can be controlled via the control panel.
Instrumentation
The running status of the power system can be measured and stored, which involves sensor placement, NI data acquisition and computer processing. It covers the temperature and pressure of key components, vibrations and rotating speed of the engine and propeller. An in-house software is developed to automatically demonstrate critical running index and store data in manageable format.
Typical fault simulation
The test rig can simulate over twenty types of faults regarding different parts of the power system. Among them the most common ones are listed in the Table 1.
| No. | Fault position | Fault type |
| 1 | Diesel Engine | Engine Misfire |
| 2 | Diesel Engine | Incomplete Combustion |
| 3 | Diesel Engine | Nozzle Wear and Leakage |
| 4 | Gearbox | Wear |
| 5 | Gearbox | Tooth Crack |
| 6 | Gearbox | Fatigue Pitting |
| 7 | Propeller | Misalignment |
| 8 | Propeller | Blade Contamination |
| 9 | Propeller | Blockage of Hydraulic System |
Key publications
- [1] Xu, Y., Fu, C., Hu, N., Huang, B., Gu, F., Ball, A.D. A phase linearisation–based modulation signal bispectrum for analysing cyclostationary bearing signals. Structural Health Monitoring, 2020, DOI: 10.1177/1475921720949827.
- [2] Xu, Y., Huang, B., Yun, Y., Cattley, R., Gu, F., Ball, A.D. Model based IAS analysis for fault detection and diagnosis of IC engine powertrains. Energies, 2020, 13(3), 565.
