Efficiency optimizing propeller speed control for ships
US8315750B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2008 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Sep 15, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T70/10
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The invention relates to a method for improving the propulsion efficiency of vessels. The improvement is obtained by utilizing wave induced variations in propeller inflow, i.e. the speed of water flowing towards the propeller. The wave induced water speed variation is used to calculate the propeller speed in a way so that the propeller speed is optimal with respect to the total propulsion efficiency. The optimal propeller speed is determined by solving an optimization problem formulated as the maximization of the ratio of energy delivered by the propeller and the energy delivered to the propeller. The method may be used for vessels with one or more propellers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.