• Energy Research

Potentially new ways to improve civil aircraft fuel efficiency, based on the aircraft maintenance process optimization are considered. The data confirming the advisability of their further in-depth study and implementation in civil aviation airlines activity is given.It is shown that one of the reasons provoking the increase of fuel consumption at the cruising flight stage might be the necessity of the bypass of meteorological areas and of the flight altitude or airspeed change. These events are occasional. At the same time the most advantageous methods aimed at improving fuel efficiency are continuous aircraft climb or descent.One of these research directions is the implementation of continuous descent mode, rational routes of approach to the airfield, climb, choice of optimal flight modes in flights. This program is called “SESAR”. While its realization within the framework of the EC it is planned to reduce fuel consumption by 5 million tons a year due to its economy by 10 % after each flight. The similar program “NextGen” of air traffic optimization is accepted and is realized nowadays in the USA. The purpose of this program is annual improvement of fuel efficiency not less than by 2 % a year.Based on the conducted research the expanded list of recommendations for the realization of aircraft continuous descent system in flight, providing renunciation of horizontal flight areas at idling engines is presented.

s responses such as Brake Specific Fuel Consumption (BSFC) and Nitrogen Oxide ( N O x ) emissions as the functions of fuel injection timing, common rail pressure and charged air pressure. These response surface models are then used to minimize the fuel consumption during a year, according to a typical load profile of a ferry, and to fulfill the N O x limits set by International Maritime Organization (IMO) regulations, Tier II, test cycle E2. The Sequential Quadratic Programming algorithm is used to solve this minimization problem. The results showed that the fuel consumption can be effectively reduced with the flexibility to trade it off with the N O x emissions while still fulfilling the IMO regulations. In general, this method can decrease the manual calibration effort and improve the engine&rsquo s operational profile into account. This method has two main steps: modeling and optimization. The Design of Experiments method is first conducted to model the engine&rsquo This paper presents an approach to a new engine calibration method that takes the engine&rsquo s performance with a tailored setting for individual operational profiles.

Fuel consumption in Indonesia is increasing due to rising incomes, the number of motor vehicles in Indonesia. The purpose of this study was to determine the effect of fuel price policy, motor vehicles (motorcycles), per capita income on the consumption of fuel (Premium). The object of this study is the fuel consumption in the Republic of Indonesia period 1985-2014. The design of this research study with a quantitative approach. Analyzed using Multiple Linear Regression Ordinary Least Square method (OLS). Based on the results of this study concluded that the pricing policies have a significant effect on the consumption of premium, per capita income has positive influence on consumption of premium, the number of motorcycles positive effect on premium consumption, as well as fuel prices, per capita income, and the number of motorcycles simultaneously positive effect on consumption of premium.

On the basis of the experiences of ICEEF 2010 and ICEEF 2011, further information has been collected during the renewal of the service contract No. 256660, ICEEF 2012, in relation to the state of the art of fisheries technology. The data collection focused in specific topics that can be essential to obtain important results in terms of energy efficiency, mainly related to technical issues, such as propulsion systems innovations. Nevertheless, there was a lack of activities in the funding of energy saving. Most of the material collected has been obtained by exhibitions and conferences. During these visits it has been possible also to further promote the website, considering that a rising up of website contacts has been noticed after such events.

Abstract The fuel consumption of a public transport bus depends on many factors. Various speeds, acceleration and deceleration modes, stopping times at bus stops and congestion, as well as the load depending on the number of transported passengers have a significant impact on the fuel consumption of the city bus. It is difficult to investigate the influence of these factors on fuel consumption using simple equations to determine the energy efficiency of vehicles. A very useful method in this case is the VSP (Vehicle Specific Power) method. The fuel consumption model based on this method uses a number of parameters. Taking into account the measurement data obtained from the actual mileage of city buses, the relevant parameters of the model were determined. The verified model was used in the process of computer simulation aimed at determining the fuel consumption of the bus in urban traffic. Particular attention was paid to the study of the impact of traffic during rush hours and congestion on fuel consumption. The impact and significance of the selected parameters on the fuel consumption of the city bus were also assessed using computer simulations.

WOS:000310405800004 (Nº de Acesso Web of Science) “Prémio Científico ISCTE-IUL 2013” Submitted by ciencia null (ciencia@iscte.pt) on 2014-05-06T11:57:32Z No. of bitstreams: 0 Approved for entry into archive by Susana Ferreira (susana.ferreira@iscte.pt) on 2014-05-06T11:58:33Z (GMT) No. of bitstreams: 2 Madureira 2012 Energy policy.pdf: 303049 bytes, checksum: 2e44909c89f739d9d65ad1e212896613 (MD5) deposit.zip: 1496 bytes, checksum: 23e3f0287f57d911b5db9349034b130a (MD5) Made available in DSpace on 2014-05-06T11:58:41Z (GMT). No. of bitstreams: 2 Madureira 2012 Energy policy.pdf: 303049 bytes, checksum: 2e44909c89f739d9d65ad1e212896613 (MD5) deposit.zip: 1496 bytes, checksum: 23e3f0287f57d911b5db9349034b130a (MD5) Previous issue date: 2012