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    Wyświetlanie 1-13 z 13
    Tytuł:
    Examinations of effective efficiency of a car engine in non-stationary work conditions from torque load
    Autorzy:
    Ubysz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/245343.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    engine performance maps
    specific fuel consumption
    effective efficiency
    Opis:
    Measuring method and calculations of the impact of non-stationary work conditions of car engine torque load upon its effective efficiency have been presented in the paper. The obtained results have been compared to the already achieved results. The applied method of calculation balance and the consumed fuel enabled the writer of the paper to calculate the value of the change of unitary fuel consumption at a work point on engine performance map. The carried out examinations focus on measurements at one measuring length and so the rate of torque load at each of the four gear box ratio (2-5) can be controlled by constant final velocity of driving or by shifting or extending the measuring length against the lowest point ( the measuring length is 'U'-shaped). Finding the right solution to this problem will allow elaborating the calculation algorithm of engine effective efficiency for the examined range of engine performance maps for changeable, non-stationary work conditions. The results make it ąuite explicit that non-stationary work conditions from the engine speed and the engine load impair the effective efficiency of the engine at work in particular gears. Non-stationary mode of engine operation is essential for the higher values of gear box ratio whereas for lower values the engine load really matters.
    Źródło:
    Journal of KONES; 2009, 16, 4; 463-468
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Mathematical description of the external characteristics of compression-ignition engine
    Autorzy:
    Stoeck, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/245845.pdf
    Data publikacji:
    2010
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    polynomial interpolation
    specific fuel consumption
    exhausts gas smokiness
    Opis:
    In this paper is presented a calculation procedure based on Lagrange's interpolation formuła which has been used for describing the external characteristics of compression-ignition engine of the 359 type. The characteristic curves of specific fuel consumption and exhaust gas smokiness were chosen as an example, which had been obtained during examinations on engine test bed for a drive unitfuelled with four types of fuel. Measurements were carried out on a standard engine test bed which is part of laboratory facilities of the Department of Automotive Vehicles Operation, Western Pomeranian University of Technology in Szczecin. The study object was an unsupercharged four-stroke engine of domestic production of the 359 type. It is a six-cylinder compression-ignition drive unit with direct fuel injection system. Interpolating polynomials determined analytically for respective characteristics have been presented in the graphical form, while experimental examination results necessary for obtaining them have been additionally tabulated. The presented methodology allows simplification of particular experiment stages by giving possibility to estimate analytically the missing data and with preservation of a minimum number of measuring points. With small corrections, it may be used in similar examinations on other engine test beds. Its application should support the planning of particular experiment stages but does not, in any case, replace it since determination of engine characteristic curves is possible through research only.
    Źródło:
    Journal of KONES; 2010, 17, 2; 445-450
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Engine performance maps in nonstationary operating conditions of car engine
    Autorzy:
    Ubysz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/245565.pdf
    Data publikacji:
    2009
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    B.S.F.C. map
    specific fuel consumption
    effective efficiency
    Opis:
    A method is proposed in the paper to calculate effective efficiency of an engine in nonstationary operating conditions. A reference point for this method is the effective efficiency of the engine derived from its performance map. A research methodology has been developed to this end, the basis of which consists of measurements and calculations of the to tal energy efficiency of a car motion in a variable driving cycle. In order to determine the impact of the road grade, measurements were performed along a geodetically described roadsection in two traffic directions: "up " and "down ". The adopted research scheme allows covering the area of the engine performance map being of interest to us with measuring points. The mean value or rotational speed and its change in unit oftime were adopted as the leading parameters which have a dominating influence on, and result in a reduction of the effective efficiency of the engine. To improve the accuracy of calculations, the variable driving cycle consists of driving phases and idle running. The volume of fuel consumed, not accounted for in the driving phases, being the difference between the calculated and consumed fuel, is a measure of reduction of the effective efficiency of the engine, whilst the unit power of additional motion resistance of the vehicle (a*ni) is a leading parameter in the analyses of the calculation results.
    Źródło:
    Journal of KONES; 2009, 16, 3; 455-463
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigation on performance of a spark ignition engine runs with alcoholic blend-gasoline
    Autorzy:
    Ahmed, H. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/243048.pdf
    Data publikacji:
    2015
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    methanol
    ethanol
    butanol
    compression ratio
    specific fuel consumption
    exhaust gas temperature
    performance
    Opis:
    In this paper performance resulted from a single cylinder spark-ignition engine fuelled with 20% by volume of methanol, ethanol, and butanol was studied and compared to gasoline. The experiments were conducted at variable speed and maximum torques. The conditions of stoichiometric air–fuel ratio at wide-open throttle were used. The tests were perfumed at higher useful compression ratio of the used Iraqi gasoline. The test results show that the higher compression ratio for the tested gasoline was 7.5:1. So an Iraqi conventional gasoline has engine HUCR=7.5:1 and its OST= 19 ºBTDC, this compression ratio can be considered low. Adding 20% of alcoholic blends by volume to gasoline improved the engine performance. Within the tested speed range, alcoholic blends produced higher brake powers, volumetric efficiency and thermal efficiency. In addition, it resulted in lower exhaust gases temperatures. The brake specific fuel consumption of the tested alcoholic blend was higher than that for gasoline.
    Źródło:
    Journal of KONES; 2015, 22, 3; 249-256
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sprawność efektywna silnika ZI samochodu osobowego w dynamicznych warunkach pracy
    The actual car engine efficiency at dynamic operating conditions
    Autorzy:
    Ubysz, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/328292.pdf
    Data publikacji:
    2008
    Wydawca:
    Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
    Tematy:
    samochód osobowy
    silnik ZI
    jednostkowe zużycie paliwa
    charakterystyka uniwersalna
    car
    SI engine
    specific fuel consumption
    fuel consumption map
    Opis:
    Problem wyznaczenia sprawności efektywnej silnika samochodowego w dynamicznych warunkach pracy jest kluczowym w obliczaniu całkowitej energochłonności ruchu pojazdu i optymalizacji zużycia paliwa. Dlatego wśród niewielu metod praktycznego rozwiązania tego zagadnienia najbardziej atrakcyjną wydaje się jej odniesienie do znanej sprawności efektywnej silnika dla statycznych warunków pracy z charakterystyki uniwersalnej. Autor w obliczeniach tego problemu wykorzystał metodę bilansu energochłonności ruchu w zmiennym pod względem dynamiki przyspieszania cyklu jezdnym i porównania wyników obliczeń z rzeczywistym zużyciem paliwa. Założono w obliczeniach prostoliniowy wpływ dynamiki przyspieszania prędkości obrotowej silnika na spadek sprawności efektywnej wyznaczonej dla statycznych warunków pracy.
    The problem of determining the car engine efficiency in dynamic operating conditions is of great importance while calculating the total consumption of energy when the car is driven. It also enables to define the optimum energy consumption. Up till now only few methods have been used but the one which seems to be quite effective is based on the actual engine efficiency at static operating conditions from universal characteristics. The method of energy consumption balance in a variable driving cycle (the dynamics of acceleration was changeable) was applied and the calculation results were compared to the actual fuel consumption. It has been assumed that there was rectilinear influence of acceleration dynamics of the engine upon the decrease of actual efficiency determined for the static operating conditions.
    Źródło:
    Diagnostyka; 2008, 1(45); 69-73
    1641-6414
    2449-5220
    Pojawia się w:
    Diagnostyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The impact of air filter on operational properties of engine with the common rail fuel supply system
    Autorzy:
    Gołębiewski, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/241554.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    air filter
    operational properties of engine
    engine flexibility
    specific fuel consumption
    torque
    effective power
    Opis:
    The objective of this research project was to determine the percentage impact of dry-medium air filter being used in Fiat Multijet 1.3 JTD engine on its operational properties (engine flexibility and specific fuel consumption). Experiments were performed according to the requirements of research methods specified in the piston combustion engine standard in force. In order to make comparisons, operational parameters of the power unit (torque, effective power and specific fuel consumption) were measured with dry-medium air filter (with a new filter element) being fitted and with air filter being removed. Each point of respective characteristic curves was determined based on four measurements as their mean value. Also boost pressure, which could be of importance for results, was considered in the experiments. However, the degree of EGR valve lift, the operation of which could also appear to be important, was not taken into account. For each measuring point of respective characteristic curves, the ranges of measurement uncertainties were determined. Expanded standard uncertainties were calculated based on the Guide to the Expression of Uncertainty in Measurement. The experiments being carried out allowed concluding that the engine with air filter was less flexible by approx. 20% when compared to that without air filter, whereas its specific fuel consumption was greater by approx. 9%. The degree of air filter pollution affects its flow resistance and, which is related to this, engine torque and its effective power as well as its flexibility decrease but fuel consumption increases
    Źródło:
    Journal of KONES; 2013, 20, 1; 103-109
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact of Nitrogen Oxides Emission Reduction Methods on Specific Fuel Consumption of Marine Diesel Engines
    Autorzy:
    Herdzik, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/2069919.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Koszalińska. Wydawnictwo Uczelniane
    Tematy:
    ship operation
    medium speed diesel engine
    slow speed diesel engine
    emission to atmosphere
    nitrogen oxides emission reduction
    specific fuel consumption
    Opis:
    The paper has been presented the methods of nitrogen oxides emission reduction to fulfill the Tier 2 and Tier 3 requirements of the Annex VI of MARPOL Convention. It has been shown the development of marine two-stroke diesel engines and the change of nitrogen oxides emission from 1960 to 2000 and later up to 2020 after the implementation of NOx emission reduction methods. Specific fuel consumption before 2000, and as a prediction and given data in the manufacturers manuals for Tier 3 engines up to 2020, and as only a prediction up to 2030 has been analyzed and elaborated. Impact of nitrogen oxides reduction methods on the specific fuel consumption of the marine diesel engine has been evaluated. Additional emission of some gases to the atmosphere due to the implementation of reduction methods has been determined. EGR and SCR systems have got a lot of imperfections: required to install additional reduction systems (investment cost, required volume in the engine room), need maintenance and operation costs, produced wastes during treatment process. The estimated additional cost is about 0.8 USD/MWh of produced energy, taking into account only the cost of excessive used fuel. The whole increased cost may reach the level two-three times more due to cleaning systems investment costs, their operational cost and waste disposal. It has been the one of the reasons of worsening the transport effectiveness and competitiveness.
    Źródło:
    Rocznik Ochrona Środowiska; 2021, 23; 279--289
    1506-218X
    Pojawia się w:
    Rocznik Ochrona Środowiska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diesel engine for aircraft propulsion system
    Autorzy:
    Gęca, M.
    Czyż, Z.
    Sułek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/134252.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    diesel engine
    aircraft propulsion system
    power-to-weight ratio
    specific fuel consumption
    silnik spalinowy
    lotniczy układ napędowy
    jednostkowe zużycie paliwa
    Opis:
    Stricter requirements for power in engines and difficulties in fueling gasoline engines at the airport make aircraft engine manufacturers design new engines capable of combusting fuel derived from JET-A1. New materials used in compression-ignition engines enable weight reduction, whereas the technologies of a Common Rail system, supercharging and 2-stroke working cycle enable us to increase the power generated by an engine of a given displacement. The paper discusses the parameters of about 40 types of aircraft compression ignition engines. The parameters of these engines are compared to the spark-ignition Rotax 912 and the turboprop. The paper also shows trends in developing aircraft compression-ignition engines.
    Źródło:
    Combustion Engines; 2017, 56, 2; 7-13
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Turbofan Engines Efficiency, Historical Trends, and Future Prediction: A Review
    Autorzy:
    Kuropatwa, Michał
    Wegrzyn, Nicolas
    Kozuba, Jarosław
    Powiązania:
    https://bibliotekanauki.pl/articles/2174776.pdf
    Data publikacji:
    2022
    Wydawca:
    Centrum Rzeczoznawstwa Budowlanego Sp. z o.o.
    Tematy:
    turbofan engine
    bypass ratio
    overall pressure ratio
    specific fuel consumption
    safety
    composite materials
    silnik turbowentylatorowy
    współczynnik obejścia
    całkowity stosunek ciśnień
    jednostkowe zużycie paliwa
    bezpieczeństwo
    materiały kompozytowe
    Opis:
    Technological development in the aviation business is usually dictated by diverse safety, economic, environmental, and social goals set by governments, regulatory agencies, and the market. Recently, a rapidly increasing interest in making air transportation climate neutral has been observed. The objective of this study is to analyze the historical trends of aircraft engine fuel efficiency, identify parameters affecting engine efficiency and initiate a discussion about future technology development needed to meet the expectations. The commercial turbofan engines test data comparison is provided in this study, followed by a theoretical assessment. The presented test data trends show a clear correlation between specific fuel consumption decrease and engine parameters like bypass ratio and overall pressure ratio increase, which is confirmed by theoretical assessment. Based on performed analysis results, a bypass ratio increase was indicated as the one potential path to reduce aircraft engine fuel consumption. Bypass ratio improvement could be achieved by fan diameter increase and rotation speed reduction in the case of turbofan engine architecture. A larger fan rotor requires a high torque drive and significantly increases engine weight which could be compensated by the lightweight design of the engine components, e.g., by applying composite materials.
    Źródło:
    Safety & Defense; 2022, 2; 82--90
    2450-551X
    Pojawia się w:
    Safety & Defense
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Empirical study of the effect of the air filter on the performance and exhaust emissions of a diesel engine
    Autorzy:
    Dziubak, Tadeusz
    Karczewski, Mirosław
    Dziobek, Ilona
    Powiązania:
    https://bibliotekanauki.pl/articles/24202461.pdf
    Data publikacji:
    2023
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    internal combustion engine
    air filter pressure drop
    engine power
    specific fuel consumption
    exhaust emissions
    silnik spalinowy
    spadek ciśnienia w filtrze powietrza
    moc silnika
    jednostkowe zużycie paliwa
    emisja spalin
    Opis:
    The results of an experimental study of the effect of the pressure drop of the air filter pf on the operating parameters and exhaust emissions of a modern CI internal combustion engine of a truck equipped with an electronically controlled power system are presented. The tests were carried out for an air filter with a clean filter cartridge Δpf0 = 0.58 kPa and with a cartridge contaminated after a service mileage (about 50 thousand km) ΔpfD = 2.024 kPa. In each test, engine performance, exhaust emissions and relative change in emissions were determined: CO, NOx, HC, CO2, H2O. It was found that an increase in the filter resistance pf causes a decrease in the filling degree by 12%, engine useful power by almost 10%, exhaust gas temperature by a maximum of 30oC and an increase in specific fuel consumption by almost 5%. Air filter resistance has no significant effect on NOx emissions and HC concentration. There is a reduction in H2O emissions by up to 7%, CO by up to 13% and CO2 by up to 4%, and an increase in oxygen emissions by 15%, depending on operating conditions.
    Źródło:
    Combustion Engines; 2023, 62, 2; 94--111
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Experimental investigation biodiesel-n-butanol fuels blends on performance and emissions in the diesel engine
    Autorzy:
    Labeckas, Gvidonas
    Slavinskas, Stasys
    Mickevičius, Tomas
    Powiązania:
    https://bibliotekanauki.pl/articles/2097621.pdf
    Data publikacji:
    2022
    Wydawca:
    Polskie Towarzystwo Naukowe Silników Spalinowych
    Tematy:
    diesel engine
    biodiesel
    n-butanol
    lubricity
    brake specific fuel consumption
    engine efficiency
    emissions
    smoke opacity
    silnik diesla
    smarność
    jednostkowe zużycie paliwa przez hamulce
    sprawność silnika
    emisje
    zadymienie spalin
    Opis:
    The paper presents the experimental test results reflecting the comparative changes in the performance efficiency and emissions of the exhaust of a naturally aspirated, four-stroke, single-cylinder, air-cooled diesel engine due to its transition from neat rapeseed oil biodiesel to fuel blends prepared by mixing in various proportion (by volume) rapeseed methyl ester (B) and butanol (Bu). The lubricity properties of biodiesel-n-butanol fuel blends were studied using HFRR method. In contrast to previous works, the undertaken investigation is performed with a totally renewable, binary liquid biofuel blends. The purpose of the research is to reduce simultaneously the production of NOx emissions and the exhaust smoke with respect to neat biodiesel due to potentially improved homogeneity of combustible mixture and particulate matter emissions benefits suggested by the higher oxygen content (21.62 wt%) and the relatively lower carbon-to-hydrogen ratio (4.8) of the normal n-butanol. The tests revealed that the brake specific fuel consumption for the binary biodiesel-n-butanol fuel blends is always higher than that neat biodiesel produces under the same loading conditions. Maximum nitrogen oxide (NOx) emissions were obtained with the engine running on neat biodiesel (2290 ppm). At full (100%) load conditions, the lowest NOx emission was obtained with the engine running on a biofuel BBu20 blend. The lowest level of carbon monoxide emissions (CO) was observed, when engine running with the most butanol-oxygenated biofuel blend BBu20.The highest smoke opacity of the exhaust was obtained when the engine was fuelled with neat biodiesel and at full load.
    Źródło:
    Combustion Engines; 2022, 61, 1; 90--95
    2300-9896
    2658-1442
    Pojawia się w:
    Combustion Engines
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of interval interpolation for the description of compression-ignition engine performance characteristics
    Zastosowanie interpolacji przedziałowej do opisu charakterystyk zewnętrznych silnika o zapłonie samoczynnym
    Autorzy:
    Stoeck, T.
    Prajwowski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/224272.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    silnik o zapłonie samoczynnym
    charakterystyka zewnętrzna silnika
    paliwo pochodzenia roślinnego
    zużycie paliwa
    optymalizacja
    interpolacja przedziałowa
    interpolacja Lagrange'a
    polynomial interpolation
    performance characteristics
    specific fuel consumption
    exhaust gas smokiness
    Opis:
    In this paper is presented a calculation method based on Lagrange's interpolation formula which has been used for mathematical description of the performance characteristics of a compression-ignition engine of the 359 type of the Polish production. Its application allows simplification of experimental tests through preservation of a minimum number of measuring points and estimation of other data analytically. In order to minimise the interpolation error occurring with polynomials of high degrees and constant node distances, the characteristics were approximated by spline functions with both solutions being shown comparatively in the graphical form. As calculation examples, the curves of specific fuel consumption and infrared radiation absorption coefficient were chosen, which had been obtained during examinations on engine test bench for a drive unit fuelled with four types of fuel. In addition, results of the experiment required for their determination were tabulated. The presented method may be used in further tests of a given engine as well as on other experimental benches, aiding long-lasting and expensive optimisation of operating parameters when using fuels of plant origin. Description of any performance characteristics by means of interval interpolation is convenient from the practical side and does not cause greater calculation problems since polynomials of low degrees are being used in the procedure.
    W artykule przedstawiono metodykę obliczeniową bazującą na interpolacji wielomianowej Lagrange'a, którą wykorzystano do matematycznego opisu charakterystyk zewnętrznych silnika o zapłonie samoczynnym produkcji polskiej typu 359. Jej zastosowanie pozwala na uproszczenie badań doświadczalnych poprzez zachowanie minimalnej ilości punktów pomiarowych i oszacowanie pozostałych danych w sposób analityczny. W celu zminimalizowania błędu interpolacji występującego przy wielomianach wysokich stopni i stałych odległościach węzłów, charakterystyki przybliżano funkcjami sklejanymi, przy czym oba rozwiązania pokazano porównawczo w formie graficznej. Jako przykłady obliczeniowe wybrano krzywe jednostkowego zużycia paliwa i współczynnika absorpcji promieniowania podczerwonego, które uzyskano w badaniach na hamowni silnikowej dla jednostki zasilanej czterema rodzajami paliw. Wyniki eksperymentu wymagane do ich wyznaczenia dodatkowo stabelaryzowano. Prezentowana metodyka może być wykorzystana w dalszych badaniach danego silnika, jak również na innych stanowiskach doświadczalnych, wspomagając długotrwałą i kosztowną optymalizację parametrów roboczych przy stosowaniu paliw pochodzenia roślinnego. Opisanie dowolnych charakterystyk zewnętrznych za pomocą interpolacji przedziałowej jest wygodne od strony praktycznej i nie przysparza większych trudności obliczeniowych, gdyż w procedurze wykorzystuje się wielomiany niskich stopni.
    Źródło:
    Archives of Transport; 2010, 22, 3; 349-357
    0866-9546
    2300-8830
    Pojawia się w:
    Archives of Transport
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Identyfikacja rzeczywistych warunków eksploatacji samochodu z użyciem energochłonności jednostkowej
    Identification of real vehicle operating conditions with the use of specific energy consumption
    Autorzy:
    Kropiwnicki, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/263419.pdf
    Data publikacji:
    2010
    Wydawca:
    Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
    Tematy:
    eksploatacja
    energochłonność jednostkowa
    zużycie paliwa
    exploitation
    fuel consumption
    specific energy consumption
    Opis:
    W pracy przedstawiono autorska metodę określania warunków pracy pojazdu za pomocą parametru zwanego energochłonnością jednostkową (dla fazy napędowej), który uwzględnia ilość energii wydatkowanej do napędu pojazdu, jego masę oraz przejechany dystans w fazie napędowe. Przyjęto, ze energia wydatkowana na napęd pojazdu wynika zarówno z warunków drogowych, jak również temperamentu kierowcy i czynniki te są tratowane jako równoważne. Miejsce eksploatacji (intensywność ruchu) oraz sposób prowadzenia pojazdu mogą być w zaproponowanej metodzie jednoznacznie opisane za pomocą funkcji gęstości rozkładu energochłonności jednostkowej. W pracy przedstawiono analizę wpływu masy pojazdu na wartość średnią energochłonności jednostkowych w fazie napędowej dla wybranych syntetycznych testów jezdnych, a także profili prędkości oraz zmian wysokości zarejestrowanych w warunkach rzeczywistego ruchu na terenie miasta Gdańska, W pracy przedstawiono także przykłady identyfikacji warunków eksploatacji pojazdu w wybranych warunkach oraz wpływ średniej energochłonności jednostkowej na przebiegowe zużycie paliwa w fazie napędowej.
    Car operating conditions are identified in this work by the energy consumed per distance covered and the vehicle mass (specific energy consumption), which contains impact of the traffic conditions as well as the style of driving. The factors mentioned above have influence on the amount of mechanical energy transferred to the driving wheels. The traffic and the style of driving can finally be described with a probability density function of the parameter: specific energy consumption. An influence of the vehicle mass on the specific energy consumption for selected synthetic tests as well as registered drives in the conditions of real traffic in the city of Gdansk have been presented. Examples of vehicle operating conditions identification as well as an influence of the average specific energy consumption on the operating fuel consumption in the propulsion phase have been presented.
    Źródło:
    Archiwum Motoryzacji; 2010, 3; 153-166
    1234-754X
    2084-476X
    Pojawia się w:
    Archiwum Motoryzacji
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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