Apply online to license this technology
Modern vehicles that move on land, on the sea, or in the air often have power plants with multiple modes. A truck can be in various gears, each of which is a mode. A multi-engine aircraft will sometimes deliberately operate with some of its engines shut down.
Each set of operating engines is a mode. Ships sometimes have multiple shafts or multiple engines of different types, and a decision must be made regarding the best mode to use. Fuel consumption varies continuously with speed in each mode, and each mode has limits on the speeds that can be safely obtained.
For the Navy, which spends well over $1 billion per year on fuel, optimizing consumption is of high importance. Likewise, for shipping lines, airlines and trucking fleets, optimally balancing speed to the destination with fuel consumption is a critical driver of profit.
Optimization experts with the Navy have developed a method for selection of the most fuel-efficient mode of a vehicle, including the possibility that the most efficient mode may be mixed; that is, the vehicle should operate in one mode part of the time and in a different mode the rest of the time. The process generalizes published data and provides a method to find optimal, mixed-mode transits for vehicles. The software system allows the user to vary constraints and goals.
- Applicable to any multi-mode vehicle
- US patent 8,050,849 available for license