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Optimization of Hybrid Propulsion Systems

100%

Sciberras E. , Grech A.

2012

tom Vol. 6, no. 4

539--546

Powertrain hybridization permits the benefits of more than one power source to be integrated and exploited for a beneficial effect on an objective, such as reduction of fuel consumption or emissions. Due to their operating profiles however, marine hybrid vessels do not exhibit much opportunity for free energy re-cuperation. Fuel savings can be realized by bettering component operating points, yet this requires correct siz-ing matched to the expected usage. In this paper, a multi-objective genetic algorithm is used to optimally size propulsion components in order to minimize fuel consumption as well as installation weight for a hybrid mo-toryacht operating on a day cruise scenario.

Future of hybrid propultion system for combat vehicles

75%

Walentynowicz J.

tom Vol. 13, No. 3

399-420

Problems of propulsion systems development for future combat vehicles were presented in this paper. This development works are realised accord the program „All Electric Combat Vehicle”. Properties of hybrid propulsion systems with military requirements were described. Nationals programs of research on hybrid propulsion were characterised. Investigation a few prototypes of armoured vehicles 4x4 and 8x8 and lightweight tracked platforms are realised in USA. Germans factories presented many system for hybrid vehicles. They are electro-mechanical system, electrical motors, energy storages systems and few prototypes tracked and wheeled vehicles. Prototype of transport vehicle 6x6 and cross terrain vehicle 4x4 was worked out in Great Britain and simulation investigations of tracked vehicle were realised. Armoured hybrid vehicle was designed in France and simulation investigations on lightweight tracked vehicle were ran. Prototypes modular and compatible tracked and wheeled vehicles were worked out in Sweden, but propulsion system for wheeled vehicle was designed in international cooperation. South Africans’ program cancers fighting vehicles 8x8 and prototype of this vehicle is investigated.

W referacie przedstawiono problemy rozwoju napędów hybrydowych w wozach bojowych przyszłości. Prace te są realizowane w ramach kierunku "W pełni elektryczny wóz bojowy". Opisano właściwości napędów hybrydowych z uwzględnieniem wymagań wojskowych. Scharakteryzowano narodowe programy prac nad napędami hybrydowymi. Badania kilku prototypów opancerzonych pojazdów kołowych 4x4 oraz 8x8 oraz lekkich platform gąsienicowych są realizowane w USA. Niemieckie wytwórnie przedstawiły wiele systemów hybrydowych. Są to układy elektromechaniczne, silniki elektryczne i systemy sterowania i kilka prototypów pojazdów kołowych i gąsienicowych. W Wielkiej Brytanii opracowano prototyp pojazdu transportowego 6x6 i terenowego 4x4 oraz prowadzone są badania symulacyjne pojazdów gąsienicowych. Pojazd opancerzony 6x6 opracowano we Francji oraz prowadzone są prace nad lekkim pojazdem gąsienicowym. Prototypy modułowych, kompatybilnych pojazdów kołowych i gąsienicowych opracowano w Szwecji, przy czym napęd do pojazdu kołowego powstał w ramach współpracy międzynarodowej. Program południowoafrykański dotyczy wozu bojowego z napadem 8x8 , a prototyp jest badany

The future of energy in ships and harbors

63%

Marichal G. N. , Ávila Prats D. , Conesa A. , Rodríguez J. A. , Iglesias G.

2024

tom Vol. 18 No. 1

45--53

In recent decades, maritime transport, hand in hand with the International Maritime Organization (OMI), has promoted a change in the energetic model in ships and harbors. The main goal of this paper is to show the most useful advances in technologies with respect to reducing gas and particle emissions, and the implementation of technologies based on renewable energies for the propulsion of ships and the energy supply in harbors. Furthermore, new hybrid renewable energy-desalination water technologies which could change the shape of water supply to the ships from near shore zones will be shown. To carry out this study, exhaustive bibliographic research was conducted, including scientific and technical papers.