How does it work?
The typical engines for large tanker, bulkers, and feeder container vessels with conventional turbocharging systems run with 2 same-type turbochargers, which are always in operation in high loads, but as well in low engine loads. To optimize engine efficiency via improved turbocharging in low and part load, the engine with FiTS2 runs in lower loads with only one turbocharger in operation, whereas at higher loads (typically above 50 to 60 per cent engine load) two turbochargers are operating simultaneously. The same principle is applied for very large engines – with FiTS2, they will run with two turbochargers in lower loads and with all three turbochargers for higher load operation.
For large container vessels, which might use three turbochargers, one unit, can be adapted to shut off at lower power demands, typically below 50 per cent load. Engine settings are optimized as part of the FiTS2 design, and the system can be returned automatically and rapidly to its original full power capabilities. High load performance is therefore available combined with enhanced efficiency performance at lower loads. As illustrated, many large vessels can spend 50 per cent or more of their operating hours at below 50 per cent engine load. FiTS2 savings at these lower loads are significant.