Temat: emission system - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Combustion engines development and real driving emissions
Autorzy:: Merkisz, J.
Powiązania:: https://bibliotekanauki.pl/articles/247086.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: exhaust emission
portable emission measurement system
real road conditions
Opis:: The article characterizes state-of-the-art PEMS (Portable Emission Measurement System) equipment for exhaust emissions measurement under actual operating conditions. This equipment allows measurement of the exhaust emissions from all modes of transport. Besides, the article contains the results of exhaust emission research for engines of a variety of transport applications such as light duty vehicles and heavy-duty vehicles. Own exhaust emission research results performed under different traffic conditions of new motor vehicles fuelled with different fuels (gasoline, diesel fuel and natural gas) have been compared with the type approval values that define the vehicle emission indexes. The analysis has been performed in relation to a vehicle but the proposed measurement methodology is also knit to the engine operating conditions. The testing of heavy-duty vehicles described in the book was divided into several stages for which the results obtained for these vehicles were compared for loaded and unloaded vehicles. Ecological advantages of the city buses of different powertrain configurations have been determined (diesel, hybrid) on selected regular bus lines in city centre.
Źródło:: Journal of KONES; 2014, 21, 2; 209-219
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Conception of cylinder pressure based diesel injection control system
Autorzy:: Bieniek, A.
Powiązania:: https://bibliotekanauki.pl/articles/245444.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel injection
cylinder pressure
control system
emission
heat release
Opis:: Control of diesel fuel injection is very important and has influence not only at engine operating conditions but also at emission of toxic gases as NOx, HC, and Particulate Matter (PM) are effect of combustion process. Directly observing of combustion process is very difficult, but implementation to injection control algorithm procedures based on additional sensors as knock sensor, cylinder pressure sensor and observing of rotational speed course could give enough information to optimize control algorithm. In traditional diffusion-burn diesel combustion start of combustion occurs a cetane-number based time delay after the start of the fuel injection. To fulfill of new emission standards is need to observing not only start of combustion but also whole combustion process. In the paper conception of injection control system applied with combustion process observer based on additional sensors. Closed-loop feedback control of cylinder pressure sensor and advanced control algorithm with high-resolution rotational speed sensor offers the potential to improve controllability of combustion process. Advanced control system based on heat release estimated from cylinder pressure and rotational speed fluctuations enabling improving engine exhaust emissions, engine performance and reduced noise emission. Introducing into control system a low cost glow plug integrated cylinder pressure sensor allow to achieve complete injection control system with advanced functions which could be very effective also in aspect of fuel consumption reduction.
Źródło:: Journal of KONES; 2011, 18, 3; 27-35
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Effect to the fuel system type on energy, economic and environmental indicators of the spark-ignition engine work
Autorzy:: Ambrozik, A.
Ambrozik, T.
Kurczyński, D.
Łagowski, P.
Jankowski, R.
Kowalczyk, W.
Powiązania:: https://bibliotekanauki.pl/articles/245062.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicles
combustion engines
fuel supply system
emission of exhaust gases
Opis:: The paper presents selected results of tests on the Fiat Panda I car powered by 1.2 dm3 spark ignition engine. The engine had production installed fuel system with the single-point petrol injection. To improve its in-service performance, the engine was fitted with the multi-point injection fuel system. The assessment of the indicators of the work of the engine, fitted with single-point, or alternatively, multi-point injection fuel system, was conducted on the basis of the tests performed on the MAHA chassis dynamometer. First, tests were run for single-point injection fuel system. Next, the same tests were performed when the engine was fitted with the multi-point injection fuel system. In the tests, engine power, torque, fuel consumption and the concentrations of the exhaust gas components were measured. The latter included carbon monoxide CO, carbon dioxide C02, hydrocarbons HC, nitrogen oxides NOx, and oxygen 02. AVL Digas 4000 exhaust gas analyser was used to take measurements of the concentrations of the basic components of the exhaust gas and of the excess air ratio %u03BB. The investigations were conducted by performing the inertia test and by using the dynamometer to determine the basic indicators of the engine operation. In the investigations, the crankshaft rotational speed ranged from 1500 to 6500 rpm with 500 rpm step. The experimental results made it possible to evaluate how the manner and site of fuel delivery affect the engine -work indicators.
Źródło:: Journal of KONES; 2014, 21, 3; 7-14
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Identification and analysis of parameters for the areas of the highest harmful exhaust emissions in the model emitransys
Autorzy:: Ambroziak, T.
Gołębiowski, P.
Pyza, D.
Jacyna-Gołda, I.
Merkisz-Guranowska, A.
Powiązania:: https://bibliotekanauki.pl/articles/247522.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: proecological transport system
transport
air pollution
emission of exhaust gases
EMITRANSYS
Opis:: A scheme has been developed to be utilized for solving the interaction between wing aerodynamic loads and the flexibility of wing structures under a quasi static assumption. The interaction is implemented through a link between the nodes of finite element model and the grids of transonic small disturbance model. The particular finite element responses, namely translational displacement vectors (TDV), are utilised for reconstructing the deflected wing surfaces. So in each iteration, the updated surfaces are involved as the parent for regenerating the TSD grids. The criteria of the Euclidean norm is applied for evaluating the convergency of aero-structure interaction. Catia-V5, is fully employed to manage three dimensional geometries for developing the model of wing structures, calculating grids and aerodynamic loads, as well as for reconstructing the updated wing surfaces. Numerous functions and objects of Catia are employed by conducting particular accesses via component object models using Microsoft Visual Basic.Net. A case study is excersized to demonstrate the interaction in transonic speed. The results shown that the scheme is very good in the way performing the interaction in quasi static condition. The utilization of TDV for generating the deflected wing surfaces indicates the capability of high fidelity deformations with respect to the complexity of finite element model
Źródło:: Journal of KONES; 2013, 20, 3; 9-20
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Technical and environmental limitations of pro-ecological transport system designing
Autorzy:: Jacyna, M.
Żak, J.
Pyza, D.
Gołębiowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/241921.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: pro-ecological transport system
transport
air pollution
emission of exhaust fumes
EMITRANSYS
Opis:: Transport is one of the most environmentally destructive branches of economy. It contributes to environmental degradation and influences negatively on human live. It should therefore seek to reduce the negative impact on the environment. The paper presents many aspects of development of the national transport system. In article characterized technical constraints and environmental issues, which are applicable to the designing of pro-ecological transport system. Presented in it also indicators of the proposed design solution quality. In shaping the pro-ecological system the special role plays environmental restrictions, because they mainly determine the quality of solutions in terms of minimizing the negative impact of transport on the environment. Technical factors are equally important, because they allow, among others, reducing the external costs of congestions and allow on the creation of transport tasks on the appropriate level. In particularly, EU requirements for sustainable development of the transport system, the components of the external costs arising from the sphere of transport, indicators and ecological limitations in designing of pro-ecological transport system, ecological limitations, technical limitations, indicators for assessing pro-ecological transport system are presented in the paper.
Źródło:: Journal of KONES; 2014, 21, 4; 555-564
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Influence of CVT operating parameters at SI engine operating indexes
Wpływ parametrów pracy przekładni CVT na wskaźniki pracy silnika ZI
Autorzy:: Bieniek, A.
Jantos, J.
Hetmańczyk, I.
Mamala, J.
Borecki, D.
Powiązania:: https://bibliotekanauki.pl/articles/243130.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: układ napędowy
bezstopniowa przekładnia mechaniczna
silnik ZI
emisja
zużycie paliwa
transmission system
CVT
SI engine
pollution emission
fuel consumption
Opis:: Wykorzystanie silnika spalinowego w charakterze jednostki napędowej (JN) wiąże się z koniecznością zastosowania rozbudowanego układu przeniesienia napędu (UPN). Tylko dzięki odpowiedniemu skojarzeniu silnika spalinowego z UPN jest możliwe uzyskanie pożądanych cech całego układu napędowego (UN). Aktualnie przy obecnym poziomie technologii i porównywalnej niezawodności oraz trwałości różnych rozwiązań, kryteriami podstawowymi są zużycie paliwa, emisja substancji szkodliwych oraz właściwości dynamiczne samochodu. Te trzy podstawowe kryteria są częściowo sprzeczne. Zadowalający wynik można uzyskać wyłącznie przy dużej liczbie, możliwych do zrealizowania w UPN, wartości przełożenia. Ze wzrostem tej liczby pojawia się jednak problem racjonalnego wyboru, którego przeciętny kierujący nie jest w stanie poprawnie rozwiązać. W rezultacie zwiększa się znacznie liczba automatów napędowych, w których wybór przełożenia UPN jest zalgorytmizowany. Wśród możliwych rozwiązań rośnie udział bezstopniowych przekładni mechanicznych (Continuously Variable Transmission - CVT) dysponujących znacznym zakresem zmiany przełożenia, a jednocześnie umożliwiających płynną zmianę jego wartości. W pracy dokonano analizy wpływu parametrów pracy bezstopniowej przekładni cięgnowej na wskaźniki pracy silnika o zapłonie iskrowym. Przeprowadzona własna modyfikacja układu hydraulicznego przekładni pozwala na obserwację i zmianę istotnych parametrów jej pracy. W referacie przedstawiono wyniki badań stanowiskowych oraz drogowych przeprowadzonych w cyklach jezdnych i próbach rozpędzania. Poza podstawowymi parametrami pracy układu napędowego rejestrowano zużycie paliwa oraz emisję substancji szkodliwych uwzględniając zróżnicowane algorytmy sterowania przekładnią.
The advantage of combustion engine as power source at driving unit is connected with necessity of application of developed automotive transmission system. Only in the case of appropriate associate of combustion engine and transmission is it possible to achieving of eligible characteristic of transmission system. At currently technology level and comparable reliability and durability of different solutions the basic criterions are fuel consumptions, pollutant emissions and vehicle dynamical property. These basic criteria are at variance each other. Satisfactory result could be achieved exclusively on high number of transmission ratios. Increase of transmission ratio numbers is connected with problem of its reasonable selection, which is difficult to solve through the average driver. The result is rapidly growth of automated transmission system, were the transmission ratio is selected according to transmission control algorithm. In this transmission group grow the participation of Continuously Variable Transmissions- CVT, which disposes with high transmission ratio range and simultaneously enables to change its value fluently. In this paper the influence of CVT operating parameters at SI engine operating indexes are analysed. The own modification of transmission control unit enables to observing and control of significant transmission operating parameters. In this work the results of test bench and road tests at acceleration test and driving cycle are presented. Besides of registration of basic operating parameters the results of fuel consumption and pollutant emission are also observed.
Źródło:: Journal of KONES; 2007, 14, 3; 49-60
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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