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    Tytuł:
    Heat recovery system in a future diesel particle filter
    Autorzy:
    Mitianiec, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/245386.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    transport
    compression ignition engine
    diesel particle filter
    regeneration
    Opis:
    The main problem in conventional diesel engines and HCCI diesel is reduction of solid particles emitted to atmosphere. applying of particle filters requires special methods for their regeneration after some period of the engine work in a result of closing of substrate pores by soot. These methods require additional energy for combustion of soot (additional fuel or electric energy). The new method takes into account a self-regeneration of diesel particle filter by use of special heat recovery system. The paper shows an example of DPF self-regeneration. the exhaust temperature behind the turbine and catalytic converter is very low and particularly for HCCI engine the emission of particles is low in comparison to conventional diesel engines. for that case an additional energy is required for increase of gas temperature before DPF. the preliminary studies show a possibility of using the special design of DPF with heat recovery system. the paper shows the simulation results of such system and possibility of increasing the heat recovery ratio by change of geometry of DPF. the gas heat exchange formulas between dpf and the heat exchange module are partly included in the paper. the preliminary results of calculations shows the possibility of increase of exhaust gases in front of DPF about 20%, which enables a continuous regeneration of DPF. the work is carried out as part of the european project ipsy.
    Źródło:
    Journal of KONES; 2009, 16, 4; 333-342
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influences of biocomponents (RME) on regenerations of diesel particle filters
    Autorzy:
    Czerwinski, J.
    Stepien, Z.
    Oleksiak, S.
    Andersen, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/247285.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    diesel particle filter
    regeneration of DPF
    biofuels
    non-legislated emissions
    nanoparticles
    Opis:
    The fatty acid methyl esters (FAME's) - in Europe mostly RME *) (Rapeseed methyl ester; Abbreviations see at the end of this paper) - are used in several countries as alternative biogenic Diesel fuels in various blending ratios with fossil fuels (Bxx). Questions arise often about the influences of these biocomponents on the modern exhaust after-treatment systems and especially on the regeneration of Diesel particle filters (DPF). In the present work different regeneration procedures of DPF systems were investigated with biofuels B0, B20 & B100. The tested regeneration procedures were: - passive regenerations: DOC + CSF; CSF alone, - active regenerations: standstill burner; fuel injections & DOC. During each regeneration on-line measurements of limited and unlimited emission components (nanoparticles & FTIR) was conducted. It can be stated that the increased portion of RME in fuel provokes longer time periods to charge the filter with soot. This is due to the lower PM-emissions of the engine, as well as to the higher reactivity and higher SOF-portion of the particle mass from RME. With the passive regeneration system with stronger catalytic activity (DOC + CSF) there is a stronger NO2-production with B100 and due to the NO2-supported oxidation of PM the balance point temperature is approx. 20 centigrade lower, than with B0. For the active regenerations the time courses of emissions and temperatures are closely connected with the chosen regeneration strategy - switching, timing and intensity (of burner, or fuel aerosol generator). A higher portion of biocomponent causes usually a stronger break-down of the instantaneous DPF filtration efficiency during the regeneration procedure - this is an effect of stronger artifact of spontaneous condensation after DPF. In summary there is no negative short term effect of bio-blended-fuels on the investigated regeneration procedures. Some recommendations for a successful long term operation, basing on other works and literature are given at the end of the paper.
    Źródło:
    Journal of KONES; 2011, 18, 4; 65-75
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Combined DPF+SCR systems for retrofitting in the VERT quality verification tests
    Autorzy:
    Czerwinski, J.
    Zimmerli, Y.
    Mayer, A.
    Bunge, R.
    Heeb, N.
    Lemaire, J.
    Jauss, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/248088.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    diesel emission reduction
    diesel particle filter
    SCR
    limited and unlimited emissions
    deNOx
    Opis:
    New Diesel exhaust gas aftertreatment systems, with DPF*) and deNOx (mostly SCR) inline application are very important step towards zero emission Diesel fleet. Solid quality standards of those quite complex systems are urgently necessary to enable decisions by several authorities. The Swiss Federal Office of the Environment BAFU and the Swiss Federal Roads Office ASTRA decided to support further activities of VERT to develop appropriate testing procedures and to define the quality criteria. The present report informs about the international network project VERT *) dePN (de-activation, de-contamination, disposal of particles & NOx), which was started in Nov. 2006 with the objective to introduce the SCR-, or (DPF+SCR)-systems in the VERT verification procedure. Examples of results with some investigated systems are given. The most important statements are: - the investigated combined aftertreatment systems (DPF+SCR) for dynamic engine application efficiently reduce the target emissions with deNOx-efficiency up to 92% (if operated in the right temperature window) and filtration efficiency based on particle count up to 100%, - the average NOx conversion rate at transient operation (ETC) depends strongly on the exhaust gas temperature profile and the resulting urea dosing control, - the NP filtration efficiency, which is verified at stationary engine operation is perfectly valid also at the transient operation. The present results will be confirmed in the further project activities with other systems and with different testing cycles. A special attention will be paid to the operational profiles, which are representative for low emissions zones LEZ.
    Źródło:
    Journal of KONES; 2008, 15, 3; 89-101
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania symulacyjne i eksperymentalne utleniającego reaktora katalitycznego systemu filtra cząstek stałych w programie AVL Boost
    AVL Boost simulation and experimental investigations of oxidizing catalytic reactor from diesel particle filter system
    Autorzy:
    Kruczyński, S.
    Kamela, W.
    Duniec, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/395493.pdf
    Data publikacji:
    2012
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    silniki spalinowe
    reaktory katalityczne
    reaktory utleniające
    badania symulacyjne
    combustion engines
    catalytic reactors
    simulation
    air pollution
    environmental protection
    Opis:
    W pracy przedstawiono wyniki badań symulacyjnych i eksperymentalnych utleniającego reaktora katalitycznego stosowanego w systemie filtra cząstek stałych silnika o zapłonie samoczynnym GM MultiJet 1,3 w aspekcie oceny zgodności obliczeń symulacyjnych z wynikami eksperymentalnymi. W pracy przedstawiono wyniki badań symulacyjnych wykonanych przy użyciu programu obliczeniowego AVL Boost oraz wyniki badań eksperymentalnych prowadzonych na rzeczywistym silniku spalinowym o zapłonie samoczynnym. W artykule przedstawiono kinetykę reakcji chemicznych wykorzystywanych przez program symulacyjny do obliczeń poziomów konwersji CO, HC oraz udziału NO i NO2 w NOX. Jako dane wejściowe do obliczeń symulacyjnych wykorzystano rzeczywiste wartości stężeń związków toksycznych spalin silnika. Analiza przeprowadzona została dla wybranych punktów pracy silnika przy stałej prędkości obrotowej. Przedstawione w pracy wyniki wykazały, że algorytm obliczeniowy programu symulacyjnego pozwala uzyskać zbieżne z wynikami eksperymentalnymi poziomy konwersji CO i HC. Jednocześnie zaobserwowano pewną rozbieżności uzyskanych wyników udziałów NO i NO2 w NOX.
    Article contains results of simulations and experimental investigations of oxidizing catalytic reactor from diesel particle filter system used in 1,3 MultiJet GM Diesel engine. Investigations were done to compare conformity of simulations and experimental results. Simulations were done under program for simulation calculations AVL Boost and experimental result were taken from investigations carried on Diesel engine. Chemical reactions and reactions kinetics on which calculations of CO, HC conversion levels and NO and NO2 participation in NOX were based on are specified in this paper. As the input data for simulation calculations the actual values of toxic species concentrations in exhaust gases at the outlet of diesel engine were used. Measurements of toxic species were made in chosen engine steady state work points. Results presented in this paper have shown that calculations algorithm in AVL Boost program allows to achieve CO and HC conversion levels that are convergent with experimental results. Simultaneously some differences were observed in results of NO and NO2 participation in NOX.
    Źródło:
    Postępy Nauki i Techniki; 2012, 15; 76-83
    2080-4075
    Pojawia się w:
    Postępy Nauki i Techniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    DPF retrofit program in Israel – effects of diesel particle filters on performance of in-use buses
    Autorzy:
    Tartakovsky, L.
    Fleischmann, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/132839.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    particle emissions
    diesel particle filter
    heavy-duty vehicle
    DPF retrofit
    emisja cząstek
    filtr cząstek stałych
    pojazdy ciężarowe
    Opis:
    A long service life of heavy-duty diesel vehicles results in a large number of older-technology trucks and buses of various types running on roads nowadays. Cleaning up exhaust gases of these older vehicles gives an opportunity to improve air quality at affordable costs. Retrofitting older buses with diesel particulate filters (DPF) is a cost-effective measure to quickly and efficiently reduce particulate matter (PM) emissions and contribute to mitigation of air pollution in urban conglomerates. In this paper, the milestones on a way to wide-scale retrofitting of heavy-duty vehicles with DPF are discussed on the example of Israel DPF retrofit program. Crucial importance of a balanced governmental approach combining regulation and economic incentives, together with collaboration of government, academia and vehicle operators, is underlined. Main results of the one-year pilot project focused on urban and intercity buses are discussed. Impact of DPF retrofitting on particulate emissions and engine performance and maintenance aspects of in-use diesel buses is analyzed. Very high particle filtration efficiency (in average, about 97%) together with relatively low fuel economy penalty (0.6–1.8%, depending on the bus type) are proved. Vital importance of careful monitoring and correct maintenance of DPF-equipped vehicles is underlined.
    Źródło:
    Combustion Engines; 2017, 56, 3; 176-178
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Feature comparison regeneration particulate filter with the catalytic coating and the use of oxidation catalyst
    Sravnenie vozmozhnostejj regeneracija sezhevogo fil'tra s kataliticheskim pokrytiem i primenieniem okislitel'nogo nejjtrolizatora
    Autorzy:
    Shekhovtsov, Y.
    Zaigrayev, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/793068.pdf
    Data publikacji:
    2013
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    diesel particle filter
    regeneration
    catalytic oxidation
    soot
    harmful emission
    exhaust gas
    nitrogen oxide
    particulate matter
    carbon monoxide
    hydrocarbon
    sulphur compound
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 4
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    NOX-reduction on HD-vehicles-low cost quality check
    Autorzy:
    Czerwinski, J.
    Zimmerli, Y.
    Mayer, A.
    Heeb, N.
    Berger, H.
    D‘Urbano, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/246300.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    Diesel particle filter
    regeneration of DPF
    non-legislated emissions
    selective catalytic reduction SCR
    NOx-reduction
    SCR-quality testing
    on vehicle testing
    Opis:
    The NOx reduction of recent HD-vehicle is performed mostly by means of the selective catalytic reduction SCR. There are some manufactures and some applications of SCR as retrofit systems (mostly for the low emission zones LEZ and in combination with a DPF). In charge of Swiss authorities AFHB investigated several SCR-systems, or (DPF+SCR)-systems on HD-vehicles and proposed a simplified quality test procedure of those systems. This procedure can especially be useful for the admission of retrofit systems but it can also be helpful for the quality check of OEM-systems. In the present paper the test procedures will be described and some examples of specific results will be presented. As general conclusions it can be stated: – the foundations for the quality verification procedures of SCR-systems are established, – the SCR-systems are not active at lower temperatures < 200°C, – SCR-testing on vehicle is a simple & low-cost tool for quality check, – the overall average NOx reduction rate depends on the operating profile of the vehicle – for low-load, for cold operation and for interrupted operation (HEV) there are lower NOx reduction efficiencies.
    Źródło:
    Journal of KONES; 2013, 20, 2; 61-68
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Non-regulated emissions and particle number emissions of two passenger cars with diesel-butanol blends
    Autorzy:
    Engelmann, Danilo
    Comte, Pierre
    Czerwinski, Jan
    Renz, Stephan
    Bonsack, Peter
    Powiązania:
    https://bibliotekanauki.pl/articles/2097481.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    alternative fuels
    non-legislated emissions
    ultrafine particles
    diesel particle filter
    cold start emissions
    paliwa alternatywne
    nieregulowane emisje
    cząstki ultradrobne
    filtr cząstek stałych
    emisje zimne
    Opis:
    Biofuels represent one of the alternatives to obtain the CO2 - neutral propulsion of IC-engines. Butanol, which can be produced from biomass, is considered and was investigated in the last years due to the very advantageous characteristics of this alternative fuel. Butanol can be easily and irreversibly blended both with light (gasoline) and heavier (diesel) fuels. Comparing with ethanol it has the advantages of: higher calorific value, lower hygroscopicity and lower corrosivity. It can replace the aviation fuels. This paper presents the emission results obtained on two diesel passenger cars with different technology (Euro 2 and Euro 6c) and with addition of butanol to diesel fuel, as a part of the research project DiBut (diesel and butanol). Interesting results are given about some non-legislated (non-regulated) components, acetaldehyde (MeCHO) and formaldehyde (HCHO) and about the PN-emissions with/without DPF.
    Źródło:
    Combustion Engines; 2020, 59, 4; 29--38
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Particle filter test procedure and quality standard for diesel engines
    Autorzy:
    Mayer, A.
    Czerwinski, J.
    Kasper, M.
    Leutert, G.
    Heeb, N.
    Ulrich, A.
    Jaussi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/242255.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    combustion engines
    diesel engines
    particle filters
    quality air standards
    air pollution
    Opis:
    A new approach is needed to test particle filters for retrofitting Diesel engines. Considering the toxicity of the particles as also the physical and chemical attributes of particle filters, the optimal scheme is to test the components themselves independent of the deployment. That scheme ensures the highest effectiveness with least effort. It also enables evaluation of worst-case situations and assesses the hazards of secondary emissions. The Swiss standard SNR 277 205, which mandates the VERT test procedure, is a first step in that direction. Occupational health specialists have studied the toxicity of ultraflne particles for more than 100 years. Extremely toxic are the particles intruding into the lung. Larger particles, which are always naturally present, are intercepted in the upper respiratory paths. The body then expels these larger particles rapidly via the mucus and cilia. The new manmade particles less-than l mi m, however massively intrude into the fine pulmonary alveoli, which do not have the cleansing mechanism. The targeted efficiencies for evaluating modern filters are evident from the progress achieved. Many filters have filtration rates exceeding 99.9%, albeit the directives [4] only require 97%.
    Źródło:
    Journal of KONES; 2009, 16, 2; 305-314
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vert particle filter test procedure and quality standard for new and in-use diesel engines
    Autorzy:
    Mayer, A.
    Czerwinski, J.
    Kasper, M.
    Leutert, G.
    Heeb, N. V.
    Ulrich, A.
    Jaussi, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/247808.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    internal combustion engines
    diesel engines
    ecology
    filters
    particulates
    Opis:
    A new approach is needed to test particle filters for retrofitting Diesel engines. Considering the toxicity of the particles as also the physical and chemical attributes of particle filters, the optimal scheme is to test the components themselves independent of the deployment. That scheme ensures the highest effectiveness with least effort. It also enables evaluation of worst-case situations and assesses the hazards of secondary emissions. The Swiss standard SNR 277 205, which mandates the VERT test procedure, is a first step in that direction. The solution is derived from the physics of the filter media. The filtration of fine particles essentially depends on the particle size and the space velocity. The attributes of the emitting engine are only insignificantly relevant. Hence the physics and chemistry of particle filters can be investigated independent of the engine and its deployment duty. This concept facilitates a very thorough investigation of the size-dependent filtration, aging susceptibility, secondary emissions and extreme situations. Filter systems, which pass this detailed test, perform equally well in every retrofit configuration. This filter test concept was implemented 1998 in the VERT project and is successful for assessing retrofltting [4]. VERT approved fllter systems are already deployed in the Low Emission Zones of Europe, North and South America.
    Źródło:
    Journal of KONES; 2010, 17, 4; 313-322
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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