The Frugal Propulsion solution

The Frugal Propulsion is an intelligent learning control system that calculates optimal propeller curves, based on real data, for lowest fuel consumption possible. This is a completely new way to optimize fuel consumption.

We want to reduce your bunker bills

If you think Frugal Propulsion is the thing for you – it probably is! Call or write us an e-mail – or maybe come visit. It is good to talk.

The challenge of optimal fuel consumption

When an engine is specified for a specific vessel engineers will typically calculate operation points where the vessel has lowest fuel consumption. But in real life the performance is not ideal and by experience we have found that it is possible to optimize the fuel consumption much more.

To ensure that a vessel is operated efficiently across a range of speeds and conditions an up to date collection of best efficiency points is required. And based on this a vessel should have its propulsion settings.

Based on continuous measurements from several sensors on the vessel and intelligent algorithems the Frugal propulsion solution calculates the optimal efficiency points of RPM and propeller pitch for a specific navigator chosen speed. And the algorithm is constantly optimized so changing conditions calibrates the propulsion solution always providing the optimal utilization of fuel consumption.

Frugal Propulsoin – what you gett

Frugal Propulsion is an on-top system that integrates with the existing propulsion control system (PCS) onboard a vessel. Frugal Propulsion comes complete with:

  • Remote control touch panels for installation on the bridge as well as optionally in the ECR.
  • The Frugal Propulsion Electronics Cabinet that serves as both sensor data collection point as well as the integration point with the vessel PCS.
  • Access to the Cloud based Frugal Calculation Engine which is responsible for data storage and calculating the optimized RPM and propel pitch settings.

Once installed, Frugal Propulsion is part of the remote control system (RCS), much like any other control handle on the bridge. Activating and deactivating Frugal Propulsion is done using standard take over procedures as defined by the PCS vendor. All engine protection and alarm systems remain intact, just as they should be.

Using Frugal propulsion is equally easy. Use the thrust buttons or the on-screen thrust slider to set the desired thrust and that is it. Everything else, and that is quite a bit, happens

So how does it work in detail

Finding the best operating points that make an efficient propeller curve requires advanced mathematical algorithms. Reliable sensor data on speed, propulsion settings and vessel condition must be available. On top of that, a fair amount of calculations must occur before the data can be turned into actual fuel savings settings.

  1. Sensor data is collected continually. The data is evaluated for validity and then stored, categorized by vessel condition data.
  2. At predefined intervals, the Cloud Calculation Engine updates the mathematical model that maps speed and thrust to propulsion settings with the new data.
  3. Once the model is in place, the engine and propeller settings is queried that guarantee best efficiency for a range of desired thrust settings. This set of settings is the optimized propeller curve.
  4. The optimized propeller curve is then stored in the on-board electronics cabinet.
  5. The Frugal Propulsion HMI panels plug directly into the cabinet and consequently also the optimized propeller curve. So, selecting the desired thrust via the panels the vessel is automatically operated with the best fuel efficiency.
  6. The very last step happens as the cabinet forwards these settings to the underlying PCS that adjusts the engine RPM and propeller pitch.