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Wyszukujesz frazę "Lasocki, M." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Advantages of using hybrid vehicles based on empirical studies on the chassis dynamometer in the WLTC test
Autorzy:
Gis, M.
Lasocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/243969.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road transport
combustion engines
hybrid powertrain
air pollution
exhausts emission
Opis:
Vehicles powered in alternative ways have an increasing share in the car market. Their use is becoming more and more justified considering the ever more stringent standards for the emission of harmful substances from the exhaust systems of internal combustion engines and the introduction of restrictions on vehicle traffic in city centres. The possibility of using in the propulsion systems only an electric motor or its simultaneous use with the internal combustion engine enables a significant reduction of emission of harmful exhaust gas pollutants. This applies in particular to urban areas, where there are numerous exceedances of acceptable air quality standards. This problem is most noticeable in larger cities in Poland, where there is a lot of traffic. It is therefore legitimate to promote alternative vehicles powered in alternative ways. Their dual power system gives the opportunity to significantly reduce the emission of harmful substances. Therefore, the article presents own research, carried out on a chassis dynamometer, using two passenger cars, one with a spark-ignition combustion engine and the second with a hybrid drive system containing a spark-ignition engine and an electric motor (system without the possibility of recharging batteries from external sources). Vehicles were characterized by similar mass and the same displacement volumes of internal combustion engines. The results of the tests made it possible to compare cars in terms of exhaust emissions. For testing purposes, a chassis dynamometer was used, on which the WLTC homologation cycle was repeatedly reproduced. This is a new driving cycle, which replaces the NEDC cycle used so far in the type approval procedure in the European Union.
Źródło:
Journal of KONES; 2018, 25, 4; 103-109
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of alternative fuels injection timing on toxic substances formation in CI engines
Autorzy:
Wojs, M. K.
Orliński, P.
Lasocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/133347.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
biofuels
diesel engine
toxic substances
biopaliwa
silnik spalinowy
substancje toksyczne
Opis:
The present study describes selected issues associated with the emission level in toxic exhaust gases and fuel injection timing. The study was focused on the following types of fuels: Diesel oil (the base fuel) and the other fuels were the mixture of fatty acid methyl ester with Camelina (L10 – diesel fuel with 10% V/V FAME of Camelina and L20 – diesel fuel with 10% V/V FAME of Camelina) was used. Fuel injection advanced angle was set for three different values – the factory setting – 12° before TDC, later injection – 7° and earlier injection – 17°. The most important conclusion is that in most measurement points registered in the same engine operating conditions, the concentration of fuel NOx in L10 and L20 increased but PM emissions decreased which is caused by active oxygen located in the internal structure of the fuel. This fact contributes to the rise in temperature during the combustion process. At the same time factory settings of the angle makes NOx emissions lower and close to reference fuel.
Źródło:
Combustion Engines; 2017, 56, 1; 73-76
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of the impact of the hydration degree of bioethanol on the operation parameters of the spark-ignition engine
Autorzy:
Owczuk, M.
Matuszewska, A.
Odziemkowska, M.
Bednarski, M.
Wojs, M. K.
Lasocki, J.
Powiązania:
https://bibliotekanauki.pl/articles/133652.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
bioethanol
water content
spark-ignition engine
engine performance
bioetanol
zawartość wody
silnik o zapłonie iskrowym
osiągi silnika
Opis:
The article presents an overview of methods for the production of bioethanol and the possibility of its use to power internal combustion engines. The effects of supplying spark-ignition engine with bioethanol having various degrees of hydration were examined experimentally on the engine dynamometer. The measurement results were referred to the anhydrous bioethanol, which is used widely as petrol biocomponent and compared in terms of the course of the pressure in the combustion chamber of the engine as well as engine performance parameters – torque and power. It was found that with the decrease in alcohol concentration, the performance of the spark ignition engine deteriorated. The reduction of in-cylinder pressure was proportional to the increase in the water content in the fuel. No significant changes in the general shape of in-cylinder pressure curves were observed. Engine torque and power decreased with an increase in the water content in the fuel, especially at high engine speed. It has been stated that supplying the engine with bioethanol containing up to 6% (v/v) of water does not result in significant losses in engine performance.
Źródło:
Combustion Engines; 2017, 56, 2; 71-75
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydroxyl radicals as an indicator of knocking combustion in the dual-fuel compression-ignition engine
Autorzy:
Lasocki, J.
Orliński, P.
Wojs, M. K.
Owczuk, M.
Matuszewska, A.
Powiązania:
https://bibliotekanauki.pl/articles/133881.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
knocking combustion
dual-fuel engine
radicals
hydroxyl radicals
spalanie stukowe
silnik dwupaliwowy
rodniki hydroksylowe
Opis:
The occurrence of knocking combustion is one of the basic problems of dual-fuel compression-ignition engines supplied with diesel oil and gaseous fuel. In order to detect this phenomenon and evaluate its intensity, several methods are commonly used, including the analysis of pressure of working medium in the combustion chamber of the engine or vibrations of certain engine components. This paper discusses the concept of using mass fraction of hydroxyl radicals as the indicator of the occurrence of knocking combustion. Current knowledge on the conditions of hydroxyl radical formation in the engine combustion chamber has been systematized and the results of research on this subject have been presented. Theoretical considerations are illustrated by exemplary results of simulation studies of the combustion process in a dual-fuel compression-ignition engine supplied with diesel oil and methane. The conclusions drawn may be useful for the development of dual-fuel engine control systems.
Źródło:
Combustion Engines; 2017, 56, 1; 178-185
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Severe Influenza Outbreak in Western Ukraine in 2009 – a molecular-epidemiological study
Autorzy:
Kocik, J.
Niemcewicz, M.
Johns, M.
Jerke, K.
Michalski, A.
Bielecka, A.
Lasocki, K.
Gawel, J.
Bielawska-Drozd, A.
Joniec, J.
Kolodziej, M.
Graniak, G.
Goniewicz, M.
Kubiak, L.
Powiązania:
https://bibliotekanauki.pl/articles/50555.pdf
Data publikacji:
2013
Wydawca:
Instytut Medycyny Wsi
Opis:
Introduction: In the autumn of 2009 the authors participated in a humanitarian operation in Western Ukraine by undertaking an epidemiological investigation of an influenza-like-illness (ILI) in the L’viv Oblast region. Mobile biological survey teams took samples from civilian patients with severe acute respiratory distress syndrome, rapid transportation of the samples, and their molecular analysis in Poland to provide accurate results. Objective: The aim of the study was the molecular and epidemiological analysis of the biological samples collected. Material and Methods: Real-time reverse transcriptase polymerase chain reaction (real-time RT-PCR), multiplex PCR techniques, traditional Sanger Sequencing and classical viral culture methods were used. Results: Among the 124 influenza-like illness cases, ~50% (58) were positive for influenza A virus in WHO-CDC molecular assay, including subtyping. The specimens were further analyzed to confirm results and determine the genetic sequence. Phylogenetically, the nucleotide similarity of both the Ukraine specimens and reference A/California/7/2009 (pH1N1) was 99.2–99.3%. Oseltamivir resistance was not registered. HA1 region characterization showed an overall protein identity of 98.5–99.4%. Conclusions: An unexpected high contribution of influenza A was confirmed among ILI patients, as well as a very limited number of other detected viruses, indicate that the 2009 epidemic in western Ukraine was strongly related to novel influenza A/H1N1. The importance of swift sharing of information and reference laboratories networking in surveillance, as well as serving governments and international agencies in pursuing adequate actions, should be stressed.
Źródło:
Annals of Agricultural and Environmental Medicine; 2013, 20, 3
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Acute respiratory distress syndrome (ARDS) in the course of influenza A/H1N1v infection – genetic aspects
Autorzy:
Niemcewicz, M.
Pajak, B.
Michalski, A.
Kocik, J.
Kolodziej, M.
Joniec, J.
Graniak, G.
Gawel, J.
Marciniak-Niemcewicz, A.
Kucharczyk, K.
Prystupa, A.
Witczak, A.
Lasocki, K.
Naylor, K.
Goniewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/49651.pdf
Data publikacji:
2013
Wydawca:
Instytut Medycyny Wsi
Źródło:
Annals of Agricultural and Environmental Medicine; 2013, 20, 4
1232-1966
Pojawia się w:
Annals of Agricultural and Environmental Medicine
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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