Temat: vehicle fuel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Some aspect of theory of cumulated fuel consumption
Autorzy:: Sitnik, L. J.
Powiązania:: https://bibliotekanauki.pl/articles/247685.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicle
engine
fuel consumption
Opis:: A theory of cumulated fuel consumption in process ofvehicle operation is described. The method of creation the mathematical model and procedure of determination of model variables is shown. The mainfeatures of cumulated fuel consumption are painted attention. li is shown that the theory of cumulated fuel consumption can be use to description of the fuel consumption from beginning the exploitation of vehicles and also for the situation when the vehicle are in exploitation from any time and further fuel consumption are unknown. An example of utilisation of elaborated theory for assessment of operation of passenger car is also presented. It has been shown that applying the theory of cumulated fuel consumption, the course of such consumption can be accurately described also in this case. This proposal can be formulated in spite of making some simplifications. This is because the unknown value of the accumulated fuel before start the time of observation operation will be determined using the average (from the average) fuel consumption. This simplification greatly facilitates the flow of the calculations and it seems does not offend errors in the calculations. Method of determining the average is discussed in the article. It appears that such treatment may be justified by the fact that the mistake is, in principle, systematic error. Very high coefficients of mathematical model to fit the measured data are very interesting. Such regularity was observed during researches in buses transport [l], intercity buses, and the fleets of various vehicles (the results of researches are not yet published).The introduction of the theory of cumulated fuel consumption as one of the important parameters to assess the operation of the vehicle or vehicles may also be useful in exploitation researches. At present times the researches in which the vehicles are already in service and the engine control mops are tuned (chip tuning), are made. A good performance of these changes is often observed on chassis dyno but that is not properly sanctioned in natural exploitation. Experimentation with such issue is underway and will be the subject of future analysis (and publications).
Źródło:: Journal of KONES; 2010, 17, 4; 447-453
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Traction properties of the tracked combat vehicle at lowered power of the driving engine
Autorzy:: Borkowski, W.
Rybak, P.
Michałowski, B.
Wysocki, J.
Hryciów, Z.
Powiązania:: https://bibliotekanauki.pl/articles/246171.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combat vehicle
tank
renewable fuel
drive characteristic
mobility
Opis:: Contemporary and future battlefield may be characterized by a great dynamism of action in both defensive and offensive operations. It is possible, that armoured and mechanized troops, acting at first attack, will suffer from shortages of supplies of materials and other equipment, especially propellants. It concerns particularly a fuel to engines of driving vehicles. Therefore in many cases for engine powering (as multi-propellant engines or adapted to work on substitute fuels) may be used substitute fuel. The fuel parameters sometimes may be much different from parameters of diesel. So it is substantially important to estimate their dynamics during the planning stage of combat missions. Paper includes attempt to estimate dynamic features of the combat vehicles using substitute propellants. Applying substitute propellants leads to reducing the power of the engine up to 10 % comparing to diesel. It has essential impact on lowering the dynamic ratio at similar level. That leads to lower maximum drive speed at given resistance ofmotion and reducing the ability to climb slopes. There also appears deterioration of spurt, extending the time of reaching speeds at about 17%. Paper shows results of traction calculations of combat vehicles and the influence of powering them with renewable fuel on their effectiveness.
Źródło:: Journal of KONES; 2009, 16, 1; 59-68
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The development of the world fleet of electric vehicles in years 2010–2017 with emphasis on fuel-cell vehicles
Autorzy:: Gis, Wojciech
Menes, Maciej
Powiązania:: https://bibliotekanauki.pl/articles/244718.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: passenger cars
electric vehicle
fuel cells
hydrogen
environment
Opis:: The article discusses the development of the world EV fleet in years 2010-2017. Estimates of fleet of plug-in hybrid electric vehicles (PHEV) and BEV in the world are presented. The total number of PHEVs registered in the world in 2016 was roughly 800 thousand (650 thousand in EU). Despite the fact that the sale of electric vehicles has increased considerably in recent years, in particular over 1.1 million in 2017, and also hybrid electric vehicles (PHEV) to approx. 760 thousand in 2017. The article also discusses the development of the electric vehicles market and annual new registrations of vehicles in a breakdown into respective countries. China is the definite leader in this area. In 2017 there were almost twice more BEVs registered in China than in the US and EU together. While the increase in the sale of BEVs in years 2016-2017 in the EU and the US accounted for approx. 50%, it came to over 90% in China. Among eight top worldwide BEV producers, there are four Chinese manufacturers. In the analysed 2017, there were slightly more than 7 thousand of hydrogen-fuelled passenger cars (FCEV) in use, with over 3,500 in the US, 2,300 in Japan and approx. 1,200 in Europe, and several hundred hydrogen-fuelled buses and several dozen hydrogen-fuelled trucks. The article also addresses the development of hydrogen refuelling stations (HRS) in recent years in different countries in the world, bearing in mind that the quantitative development of the hydrogen-fuelled car fleet is strongly associated with the number of hydrogen refuelling stations.
Źródło:: Journal of KONES; 2019, 26, 4; 63-68
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Projections of the fuel consumption by the road transport in Poland
Autorzy:: Chłopek, Z
Waśkiewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/245285.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
motor transport
vehicle
annual mileage
fuel consumption
Opis:: The article presents expert estimates for 2010 and a forecast up to year 2030 regarding the number of passenger cars as well as trucks and special vehicles and buses according to the maximum weight group. In case of trucks and special vehicles, included were vehicles with maximum weight of less than 3.5 Mg and maximum weight of more than 3.5 Mg. As regards buses – the condition and forecast number of buses with maximum weight of less than 5.0 Mg and more than 5.0 Mg was presented. The forecast concerning passenger cars and other types of vehicles with maximum weight of less than 3.5 Mg (5.0 Mg in case of buses) focused on the number of vehicles by type of energy. The following types of energy were included: petrol, diesel oil, LPG, NG and electrical energy in case of passenger cars and light duty trucks. Estimates also included the average annual statistical mileage of a vehicle registered in Poland according to the specified category and type of energy. Based on the assumed assumptions in the 2030 perspective – the average fuel consumption was determined per 100 km of statistical mileage in every specified category. The predicted consumption of respective types of energy by the overall Polish car fleet was calculated and according to the specified category in years 2015, 2020, 2025 and 2030.
Źródło:: Journal of KONES; 2013, 20, 2; 33-39
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Cumulated LPG consumption suplied of cars enginees
Skumulowane zużycie LPG zasilającego silniki samochodów
Autorzy:: Sitnik, L. J.
Powiązania:: https://bibliotekanauki.pl/articles/245376.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: eksploatacja
pojazd
paliwo LPG
zużycie
exploitation
vehicle
fuel
LPG
intake
Opis:: Fuel consumption is one of the base variables to take into account in car's exploitation. Important are current and future fuel consumption. Fundamental ąuestion is how time of car 's exploitation is economically grounded. In case of exploitation of the cars' fleet not fewer important is fleet's cost forecasting which, infirst step originated from fuel 's cost. When theory of the cumulate fuel 's consumption was appeared in 2004 [1] forecasting for this matter is possible. Suitability of theory was presented [1] in reference to city bus communication fueled with diesel, in presented result [2] they proved suitable of theory to trunk bus communication (fueled with diesel too) whilst this paper presents results for fleet fueled with LPG. In text presents the mathematics models of cumulated fuel consumption in process of vehicle's exploitation. Presented way and procedure are to construction of solid model. Heeded mention to characteristic qualities of cumulate fuel's consumption. Presented examples of taking advantage of a theory for mark an exploitation of vehicles' fleet fueled with LPG. Further presented forecasting of LPG consumption are for estimate mileage for few vehicles 'fleet and whole fleet. Reported a full prove of a theory of the cumulate fuel's consumption also for LPG.
Zużycie paliwa jest jednym z podstawowych czynników branych pod uwagę w eksploatacji pojazdów. Ważne jest zarówno zużycie aktualnie występujące w eksploatacji jak i prognozowane w dłuższej perspektywie czasowej. Istotne jest bowiem pytanie jak długo eksploatowany powinien być pojazd by miało to uzasadnienie ekonomiczne. W przypadku eksploatacji floty pojazdów nie mniej ważne jest również prognozowanie kosztów eksploatacji floty, a te wynikają w pierwszym rzędzie z kosztów zakupu paliwa. Prognozowanie w omawianej problematyce stało się możliwe po opracowaniu w 2004 roku [1] teorii skumulowanego zużycia paliwa. Przydatność teorii wykazano w odniesieniu do autobusów komunikacji miejskiej zasilanych olejem napędowym, w [2] przedstawiono wyniki potwierdzające przydatność teorii w autobusach komunikacji międzymiastowej, (których silniki były także zasilane olejem napędowym) natomiast w publikacji niniejszej wyniki odnoszące się floty pojazdów zasilanych LPG. W referacie przedstawiono modele matematyczne skumulowanego zużycia paliwa w procesie eksploatacji pojazdu. Podano sposób oraz procedurę wyznaczania stałych modeli. Zwrócono uwagę na charakterystyczne cechy skumulowanego zużycia paliwa. Przedstawiono przykłady wykorzystania opracowanej teorii do oceny eksploatacji floty pojazdów zasilanych LPG. Podano również prognozy zużycia LPG, do zakładanych przebiegów, przez poszczególne pojazdy floty oraz całej floty. Wykazano pełną przydatność opracowanej teorii skumulowanego zużycia paliwa również w wypadku gdy paliwem jest LPG.
Źródło:: Journal of KONES; 2009, 16, 4; 429-434
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Forecasts for the development of hydrogen technology in the road transport in Poland against the background of global and European trends
Autorzy:: Gis, W.
Menes, E.
Waśkiewicz, J.
Powiązania:: https://bibliotekanauki.pl/articles/247712.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
road transport
vehicle
fuel cell
hydrogen technology
future development
Opis:: The cars that use fuel cells are equipped with electric motors, batteries and brake energy recovery system. Traditional engines and liquid fuel tanks in conventional vehicles are replaced with fuel cells and hydrogen tanks. Duel cells produce energy in the oxidation reaction of hydrogen, and the vehicles powered by them emit only water vapour. The article concerns the current developments and prospects of the development of technology of fuel cell vehicles powered by hydrogen. Achievements of the leading car companies in this respect, the expected future sales volume of cars equipped with fuel cells, expectations of lowering production costs of such vehicles (affecting their price), forecasts of the quantitative development of FCV fleet in the world, in Europe, including selected countries as well as the expected development of a network of hydrogen car refuelling stations. Rationale for the development of the road transport hydrogenization in Poland, indicating the importance of initiating the construction in our country of hydrogen refuelling stations. Expert estimates of the quantitative development of the fuel cells cars fleet by the 2030 and 2050 against the forecasts electric cars fleet development in Poland. Future demand for hydrogen fuel by the road transport, including vehicles using the road infrastructure in Poland acc. to the type of road traffic participants (passenger cars operated in Poland, cars travelling in transit or to Poland, buses) by the 2050. Future importance of the hydrogen technology development in the road transport to the economy and the protection of the natural environment from the destructive influence of the automotive industry.
Źródło:: Journal of KONES; 2016, 23, 4; 109-115
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Comparison of mileage fuel consumption with the natural operation of the three different cycles
Autorzy:: Sitnik, L. J.
Magdziarz-Tokłowicz, M.
Walkowiak, Wł.
Wróbel, R.
Włostowski, R.
Powiązania:: https://bibliotekanauki.pl/articles/243579.pdf
Data publikacji:: 2014
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: fuel consumption
mileage fuel consumption
resistance to motion
energy consumption of traffic
vehicle operation
SI engine
Opis:: In the automotive industry in the world continuously being sought universal driving cycle. The test should closely match the fuel consumption and emissions of toxins in the fumes of the test vehicle in its real operating conditions [4]. However, in the previously developed solid driving tests established velocity profiles differ significantly from actual driving conditions. The difference in fuel consumption, comparing the natural operation of the NEDC test reaches an average of 18%. The new version of the driving cycle should be more realistic to the everyday use of additional equipment and gadgets that are installed in modern vehicles [1]. The impact on fuel consumption by vehicles may be conditioned not only by its size and weight, but also by the geometry of the track motion, forces causing the motion and the forces acting on the car when driving on curved tracks. The vehicle encounters and overcomes all the forces that act on it while driving-resistance movement. In the energy intake through the vehicle runs in the motor changes at the expense of the energy of fuel consumed. The driving force performs work on a given stretch of road balancing (predominant) friction. On the basis of the calculated resistance movement and the energy consumption of the movement in the selected object was a comparison of the actual consumption of fuel in the vehicle with the ignition spark. Analysis was performed and found differences in three cycles: urban, extra-urban and combined.
Źródło:: Journal of KONES; 2014, 21, 4; 439-444
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The emission factor and a vehicle run-in period
Autorzy:: Hlavńa, V.
Krakovsky, T.
Powiązania:: https://bibliotekanauki.pl/articles/242358.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicle run-in period
emission factor
fuel consumption
testing
European legislation
Opis:: During operation on road and due to gradual ageing ofa vehicle, the formation of gaseous pollutants undergoes certain evolution. At the start of the vehicle life the evolution is influenced mostly by the run-in period of the driving mechanism. Motor vehicle manufacturers state that the vehicle run-in period ends after the vehicle has run from 3,000-15,000 kilometers depending on the engine type and transmission mechanism. During the run-in period the fuel consumption decreases and the production of emissions slightly changes, which consequently influences the emission factor. (The emission factor is understood as the ratio between the pollutant produced and the amount of consumed fuel). A theoretical value of the difference in the fuel consumption between the new and run-in vehicle is about 8% in favor of the run-in vehicle. The European legislation does not specify after how many kilometers the vehicle stops to be considered new. This can lead to disputes when testing emissions from the new vehicle and those from the vehicle having the control software already installed. The contribution outlines apossibility of determining the coefficient for calculation of emissions and fuel consumption for the first tested vehicle and for the one that has coveredfrom 60 to 300 kilometres. It may contribute to the optimization of the control software installed in the vehicle.
Źródło:: Journal of KONES; 2009, 16, 2; 175-181
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Compressed natural gas engines. A review
Autorzy:: Kowalewicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/242089.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: CNG vehicle
NGSI engine
NGCI engine
CNG dual-fuel engine
ecology
Opis:: Resources, production, refuelling stations and physic-chemical properties of natural gas are presented. Technical problems connected with application of natural gas to SI and CI engines are shown and analyzed. Presently most of gas vehicles are converted from gasoline to natural gas application but also many companies produce gas vehicles driven with Sl engines originally fabricated as gas vehicles. However natural gas spark ignition engines have lower torque than CI engines normally used in trucks, pick-ups and busses. Therefore CI engines are also adapted to gas fuelling as dual-fuel engines. Comparison of NG SI engines and dual-fuel engines is performed. Performances and emissions of gas automotive engines are presented. World natural gas reserves, natural gas production physical and chemical properties of typical natural gas, natural gas vehicles and refuelling stations in the world, schematic of CNG fuelling installation of IVth and Vth generation, combustion system, natural gas admission and control in DF NG engine, schematic of ADCR engine adapted to CNG fuelling are presented in the paper.
Źródło:: Journal of KONES; 2009, 16, 3; 173-183
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Simple tank-to-wheels analysis tool for future vehicle powertrains
Autorzy:: Vavra, J.
Macek, J.
Takats, M.
Cerovsky, Z.
Powiązania:: https://bibliotekanauki.pl/articles/243520.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: vehicle powertrain efficiency
internal combustion engine
fuel cells
simulation
driving cycle
Opis:: The future powertrains have to be properly assessed in early stages of vehicle design using simple and fast but reliable tools. The aim of the paper is to develop a simulation tool suitable for any of current transient cycles for finding of upper limits of tank-to-wheel efficiencies of recent or future vehicle powertrains in different concepts of vehicles to assess their potential, to find gaps between the state-of-the-art and to find ways to bridge them. The simulation philosophy and procedure may be described in the following steps. The testing cycle power demands on vehicle movement are analyzed and the optimum operation efficiency of a primary mover (engine, fuel cell, electric motor) is assigned to them. Dynamic torques at powertrain are accounted for. Speed, speed slip (driving machine/wheels) and load dependencies of transmission efficiency are simulated by simple models. In the case of a hybrid solution, charging and discharging efficiencies of energy accumulators and additional losses (e.g., in converters and inverters) are considered. The clear modular structure of the simulation tool enables the researcher to amend new features of powertrain components. The links to more detailed simulation tools are prepared. The simulation tool is described by regression and algebraic models (based on the results of higher level simulation tools) in a way giving immediate response during sensitivity analysis. The examples of tool calibration for different powertrains and results comparing powertrain potential are presented for lower medium class passenger car. The current simulation tool creates a useful link between detailed and accurate but CPU time demanding 1-D tools, based on partial differential equations, and rules-of-thumb, used sometimes for initial potential assessments. Moreover, the described tool does not require detailed data on the powertrain during early stage of design but it shows its potential for further development.
Źródło:: Journal of KONES; 2008, 15, 3; 525-534
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Evaluation of the reference fuel consumption and CO2 emission of vehicle with using of the map of operating conditions for selected agglomeration
Autorzy:: Kropiwnicki, J.
Powiązania:: https://bibliotekanauki.pl/articles/244045.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: road transport
simulation
vehicle operating conditions
fuel consumption
CO2 emission
Opis:: Vehicle operating fuel consumption estimation has a measurable significance for both individual users as well as transport and Communications companies. Complex analysis of the results may cause reduction of power (fuel) consumption, CO2 and toxic compounds emissions in exhaust gases. Operating fuel consumption estimation carried out by drivers' encounters basic difficulties connected with the lach of reliable reference standard for comparison of measured fuel consumption during car usage. Therefore it is necessary to identify vehicle operating conditions and ascribe them reference fuel consumption according to the accepted reference standard. A method of description ofreal vehicle operating conditions has been presented in this paper. Presented examples show that vehicle operating conditions may be unambiguously described with the use of proposed indicators. They can be also used to forecast the fuel consumption with high accuracy. Exclusive use of certification tests as model of operating conditions for this purpose does not allow keeping high conformity of assumptions with usage practice. Creation ofan individual map of operating conditions for a chosen agglomeration would enable to optimize choice of vehicle or fleet for an intended place of operation. Utilization of such operating conditions map may be: to determine reference fuel consumption for assumed operation area or optimal route of drive from the point of view of minimizing fuel consumption, energy or CO2 emission to the atmosphere. Selected examples of Utilization of such operating conditions map have been presented.
Źródło:: Journal of KONES; 2010, 17, 3; 239-246
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Influence of steering course of CVT to diesel fuel consumption an exhaust emission at ECE cycle
Autorzy:: Pawelski, Z.
Pałczyński, T.
Powiązania:: https://bibliotekanauki.pl/articles/242790.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: engine steering
continuous variable transmission
fuel consumption
exhaust emission
modelling and simulation of vehicle drivetrain
Opis:: Present article shows the influence of steering course of CVT-Continuous Variable Transmission to engine load trajectory at established vehicle speed profile by engine throttle. In this aim, at the first part is shown vehicle and their driveline model. There was described simulating model and the main subsystem having major influence to analyzed problem, made near help of MatLab Simulink R2007a software. There was shown one and multi objective optimal lines conception. At the second part, there was presented proposition of CVT steering course at four Variants, and also shown results of simulating investigation for proposed Variants. At final part, there was analyzed results of simulating investigations and future work according to presented problems. Results of work showed the influence control graph of drive on the trajectory of an engine load. The control graph of stepless drive is relative to the profile of the speed and the universal engine performance. It is possible to change work range by graph choice of system, wherethrough one can exclude programmatically unfavorable areas on work of the combustion engine.
Źródło:: Journal of KONES; 2007, 14, 4; 335-342
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: The properties of powertrain with diesel engine and CVT transmission steering
Własności sterowania układu napędowego z silnikiem o ZS i przekładnią CVT
Autorzy:: Pawleski, Z.
Pałczyński, T.
Powiązania:: https://bibliotekanauki.pl/articles/243613.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: sterowanie silnikiem
przekładnia bezstopniowa
zużycie paliwa
emisja toksycznych składników spalin
modelowanie i symulacja układów napędowych pojazdów
engine steering
continuous variable transmission
fuel consumption
exhaust emission
modelling and simulation of vehicle powertrain
Opis:: At this paper there were described properties of powertrain with diesel engine and CVT transmission. At this system, engine load is not directly proportional to acceleration pedal position. Position of this pedal is only interpreted as the driver will, about demanded vehicle speed, and the way of achievement of it (dynamic, economic drive) in other word strategy choose. Nowadays ecologic conditionings, it means EURO 3, 4, 5 standards, requires from drive strategies to be ecologic. Decision of shift value and engine load (proportional to fuel dose, 100% for maximal dose) is elaborated at primary controller, in spite of driver, enabling economic and ecologic powertrain work. CVT transmission introducing additional degree of freedom to powertrain facilitate above steering strategies realization. Presented system has possibility, within the framework of possessed degrees of freedom, the realization of the modes of economic drive or dynamic drive. Assuming given acceleration in vehicle impetus gaining cycle, system is in possession of only one degree of freedom (the point of the constant angular engine speed) limiting the performance of system in optimum areas (proportional participation of PHASE II in all vehicle impetus gaining cycle). Advantages resultant from the above mentioned control method are particularly visible in the vehicle impetus gaining cycle, to the speed of 15 m/s, characteristic for the municipal conditions. For proposed control variant with „test 150" one is observing the lowering of the fuel expenditure and also lowering of toxic elements exhaust emissions. In the case of the emissions, decrease was at the level of 28% in comparison with the worst variant (regarding to this criteria) ,,test 315"; for cruise expenditure of fuel we obtain decrease about 17% for analogous tests.
W pracy zaprezentowano własności sterowania układu napędowego pojazdu z silnikiem o ZS i przekładnią bezstopniową CVT. W tym układzie, obciążenie silnika nie jest wprost proporcjonalne do położenia pedału przyspieszenia. Położenie pedału przyspieszenia jest interpretowane jako informacja o woli kierowcy, o zadanej prędkości pojazdu i sposobie jej osiągnięcia (jazda dynamiczna, ekonomiczna), czyli wyborze strategii jazdy. Obecne uwarunkowania ekologiczne tj. normy EURO 3, 4, 5, wymagają by odpowiadające im strategie jazdy były realizowane ekologiczne. Decyzja o wyborze przełożenia i stopniu obciążenia silnika (proporcjonalnym do wielkości dawki oleju napędowego, 100% dla dawki maksymalnej) jest podejmowana w sterowniku nadrzędnym, poza kierowcą, pozwalając ostatecznie na ekonomiczną i ekologiczną pracę całego układu napędowego. Przekładnia CVT wprowadzając do układu napędowego dodatkowy stopień swobody ułatwia realizację w/w strategii sterowania. Prezentowany układ ma możliwość, w ramach posiadanych stopni swobody, realizacji trybów jazdy ekonomicznej czy dynamicznej (Tab. 2 próba 150 i 315). Przyjmując zadane przyspieszenie w cyklu rozpędzania pojazdu, układ posiada tylko jeden stopień swobody (punkt stałej prędkości kątowej silnika) ograniczający pracę układu w obszarach optymalnych. (udział procentowy FAZY II w całym cyklu rozpędzania). Korzyści wynikające z powyższego sposobu sterowania są szczególnie widoczne w fazie rozpędzania pojazdu, do prędkości 15 m/s, charakterystycznej dla warunków miejskich. Dla proponowanego wariantu sterowania z „próbą 150" obserwuje się obniżenie zużycia paliwa a także toksycznych składników spalin. W przypadku emisji spadek ten wyniósł 28% w porównaniu do najgorszej pod względem tego kryterium wariantu tj. „próby 315"; dla przebiegowego zużycia paliwa uzyskujemy zmniejszenie o 17% dla analogicznych prób.
Źródło:: Journal of KONES; 2008, 15, 3; 433-441
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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