Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Znaleziono wyników: 14
first rewind previous Strona / 1 next fast forward last
help Sortuj według:

help Ogranicz wyniki do:
1
100%
Nafta-Gaz
2009 R. 65, nr 11 849--856
PL Sprawność małych silników pojazdów dwukołowych można poprawić, szczególnie przy dużych obciążeniach i niskich prędkościach. W tych warunkach dla utrzymania odpowiedniego poziomu pracy emisja zanieczyszczeń i zużycie paliwa powinny zostać obniżone. Taką optymalizację można było przeprowadzić tylko na[...]
EN The efficiency of small engines in two-wheel vehicles can be further improved especially at low speeds and high loads. In these conditions fuel consumption and pollutant emission should be reduced maintaining the performance levels. This optimization can be realized only by the improvement in the ba[...]
2
100%
Prace Naukowe Instytutu Nafty i Gazu
2015 nr 204 199--215
EN The increasing energy demand from emerging countries and the simultaneous fossil oil shortage promote the use of alternative fuels. Even if gasoline and diesel continue to dominate automotive market, the use of non-conventional fuels such as biodiesel or alcohols is growing. Exhaust emissions and pe[...]
3
100%
Silniki Spalinowe
EN In the last years, diesel emission control strategies based on engine design and after-treatment devices, have been very successful in the reduction of the total particulate mass and gaseous emissions. Nevertheless they have been significantly less effective in reducing the total number of particles[...]
4
100%
Journal of KONES
EN The increasing global energy demand and the decreasing fossil-energy resources are enhancing the interest in the combustion characteristics of alternative fuels for diesel engines. Alternative-fuel combustion has been studied in detail in light-duty diesel engines, even if the comparison of test res[...]
5
100%
Journal of KONES
EN Processes of the combustion of liquid fuels and solid are more complex than combustion of fuel gases. With reference to liquid fuels occur additionally processes of vaporization of the fuel, and with reference to solid fuels - decomposition of the solid phase with processes of melting and vaporizati[...]
6
100%
Journal of KONES
EN The addition of alcohol to conventional hydrocarbon fuels for a spark-ignition engine can increase the fuel octane rating and the power for a given engine displacement and compression ratio. In this work, the influence of butanol addition to gasoline in a port fuel-injection, spark ignition engine w[...]
7
100%
Journal of KONES
EN Different optical techniques were applied to describe the thermal and chemical processes that occur in a SI small engine from the ported fuel injection and in-cylinder mixture formation to the combustion process and the exhaust emission. In PFI SI engines, the atomized fuel is sprayed towards the in[...]
8
100%
Journal of KONES
EN The particles at the exhaust of two Port Fuel Injection Spark Ignition (PFI-SI) engines were characterised in terms of number size distribution and chemical properties. Optical techniques based on the Laser Induced Incandescence (LII) and on the Broadband Ultraviolet - Visible Extinction and Scatter[...]
9
100%
Journal of KONES
EN Future stringent legislation on emissions in combination with the market request of an increase in engine efficiency and optimization poses a great challenge to the engine and components manufacturers. The technologies developed in the last years for Spark Ignition (SI) engines such as turbocharging[...]
10
100%
Journal of KONES
EN In this paper, low-cost solutions were proposed to reduce the fuel consumption in a boosted port fuel injection spark ignition (PFI SI) engine, taking into account the engine performances and the pollutants emission. To this purpose, the optical characterization of the fuel injection and of the comb[...]
11
100%
Journal of KONES
EN The present paper discusses the experimental investigations on the flame induced by fuel film deposition ignition in a single cylinder, ported fuel injection, four-stroke, over-boosted spark-ignition engine with a four-valve production head. The engine was optically accessible and equipped with a tr[...]
12
88%
Journal of KONES
EN The combustion stability of a spark ignition engine significantly influences its performances. The cyclic variation is generally evaluated by the fluctuation of in-cylinder peak pressure which changes in both magnitude and position measured from TDC. In this work the cyclic variation of combustion p[...]
13
88%
Journal of KONES
EN The combustion stability and more in details the cyclic variability significantly influences the performance and the pollutant emissions of a spark ignition engine. In this work, an experimental research activity was carried out to investigate the influence of the different combustion phases on the [...]
14
76%
Journal of KONES
EN To meet the future stringent emission standards, innovative diesel engine technology, exhaust gas after-treatment, and clean alternative fuels are required. Oxygenated fuels showed tendency to decrease internal combustion engine emissions. In the same time, advanced fuel injection modes can promote [...]
first rewind previous Strona / 1 next fast forward last