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Wyświetlanie 1-15 z 17
Tytuł:
Fault analysis of the combustion engine used in public transport vehicles
Autorzy:
Drozdziel, P.
Rybicka, I.
Tarkowski, S.
Powiązania:
https://bibliotekanauki.pl/articles/30147072.pdf
Data publikacji:
2018
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
engine
mileage
service
Opis:
The goal of this article is the fault analysis of combustion engines on the basis of the assessment of dependent variables: initial mileage, annual mileage and the annual number of orders made in the service and repair system compared with the independent factor, i.e. bus make. In the research four vehicle makes were tested: Jelcz M121, Mercedes-Benz Citaro, Solaris Urbino 12 and Autosan Sancity 12LF. The research encompassed the number of faults of a vehicle and its systems, the initial and annual mileage. It was conducted on the basis of 2015 data broken into particular months.
Źródło:
Scientific Journal of the Military University of Land Forces; 2018, 50, 3(189); 95-108
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristic features of the process of growth in the mileage of hybrid vehicles
Autorzy:
Prochowski, L..
Powiązania:
https://bibliotekanauki.pl/articles/243461.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
hybrid vehicle
mileage of hybrid vehicle
estimation of mileage growth model
Opis:
For a few years, the sales of motor vehicles with hybrid drive systems (referred to as “hybrid vehicles” or “HVs”) have been rapidly growing. However, there is a lack of information about the intensity of operation of vehicles classified in this category, which is completely new. A calculation procedure has been presented that enabled evaluation of the HV mileage growth rate. An analysis of this rate provides grounds for forecasting the changes that are likely to take place in the fleet of motor vehicles, such as the progress in the process of replacement of conventional vehicles with vehicles with alternative drive systems, and this may be a basis for predicting the reduction in fuel consumption and exhaust emissions. Models of the HV mileage growth process have been defined for three different countries. They indicate high mileage growth rates in the initial period of vehicle operation, e.g. until the fourth year of operation of the Auris H cars. The highest mileage growth rates in this period were observed in the Netherlands and Poland. In Germany, this rate was lower by 41%. Significant differences in the intensity of vehicle operation have been observed between the behaviour of HV owners in the countries under analysis. A considerable drop in the annual HV mileage as early as in the fifth and sixth year of vehicle operation is an alarming signal.
Źródło:
Journal of KONES; 2018, 25, 4; 361-368
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Characteristic features of the relation between motor truck mileage and engine cubic capacity
Autorzy:
Prochowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/245269.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
motor truck
mileage
engine capacity
Opis:
The motor vehicle operation process results in a growth in the vehicle mileage and the rate of this growth is usually characterized by specifying the value of this mileage (in km) calculated per a time unit (month, year, etc.). In this paper, the relation between the specific mileage (km per a time unit) of a motor truck and the engine capacity category has been analysed. Results of calculations based on the observation of the mileage of over 3 600 motor trucks of more than 3 500 kg gross vehicle mass (GVM) have been presented. In the analysis, intervals of equal width were adopted in which the mileage values (in km) were grouped. The percentage of the vehicles whose monthly mileage values belonged to the ith interval was calculated. The resulting set of k discrete values of the percentage of the vehicles with predefined mileage was approximated by a polynomial. The approximation functions are polynomials of the fifth or sixth degree. The curves representing such functions very well describe the distribution of values of the mileage of motor vehicles with engines of over 10000 cm3 capacity. A characteristic feature of the calculated distributions of vehicle mileage values is the fact that the location of the areas of predominating mileage values strongly depend on the engine capacity. The highest values of the monthly mileage of motor trucks with engines of up to 5 000 cm3 capacity do not exceed 9 500 km and increase to 12 500 km for trucks with engines whose capacity exceeds 12 000 cm3. Based on the profiles of the approximation functions, it has been found that the mileage values corresponding to the first mode of these functions decline with increasing engine capacity values. Simultaneously, a decrease can be observed in the percentage of the vehicles with short mileage with a growth in the engine capacity values. Conversely, the motor truck mileage values corresponding to the second mode of the approximation functions markedly increase with growing engine capacity values. An increase can also be seen in the percentage of the trucks with long mileage in the group of vehicles with engines of over 10000 cm3 capacity.
Źródło:
Journal of KONES; 2016, 23, 4; 403-412
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Applying performance data of military vehicles as a source of verification of technical specifications and criteria for implemented military equipment
Autorzy:
Konczak, J.
Walkiewicz, M.
Powiązania:
https://bibliotekanauki.pl/articles/30147073.pdf
Data publikacji:
2018
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
technical criteria
military vehicles
mileage tests
Opis:
In the article the authors have attempted to analyze the specifications and criteria imposed on military vehicles acquired by the Polish Armed Forces. The issues of selection of the target operation standard, interval between periodic maintenance inspections, fault tolerance and reliability, which are defined in tactical-technical criteria by administrators, were addressed. The technical specifications are the essential component of qualification studies. The data obtained from research of prototypes and the initial years of exploitation of the new military equipment (SpW) constitute the source of verification for technical-tactical criteria (ZTT) or initial technical-tactical criteria (WZTT) adopted for implementation. The article also discusses the issues related to estimation of probability of the tasks to be executed by military vehicles in typical operating conditions depending on the lifetime, mileage or method of storage. Presumable combat losses, which are independent from the adopted operation system of the military equipment, have been omitted. The research works in the field of reliability are conducted in the Armored Fighting Vehicles Laboratory of the Military Institute of Armored and Automotive Technology in Sulejówek. Additionally, the authors have addressed the possibility of the application of computer simulation for the purpose of military vehicles reliability.
Źródło:
Scientific Journal of the Military University of Land Forces; 2018, 50, 3(189); 166-180
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The analysis of conditions for testing mileage of military vehicles
Autorzy:
Luty, W.
Mieten, M.
Powiązania:
https://bibliotekanauki.pl/articles/30147053.pdf
Data publikacji:
2018
Wydawca:
Akademia Wojsk Lądowych imienia generała Tadeusza Kościuszki
Tematy:
mileage tests
special purpose vehicles
dynamic loads
Opis:
The study discusses the issue of determining the conditions for testing the mileage of a vehicle. Lifetime tests are the crucial element of qualification tests. This type of research verifies the resistance of vehicles and elements of their on-board equipment to vibrations and shocks resulting from the interaction of uneven surface during the movement. Certain test conditions can be straightforwardly determined and verified e.g. weather conditions or a type of the road/surface. The problem appears when the tests are to be conducted in field conditions (off-road). At the set driving speed, the level and frequency structure of dynamic loads of elements of a vehicle drive system depend mainly on a surface profile and its viscoelastic conditions. Either the profile or the characteristics of ground foundations change over the time depending on various factors. The paper attempts to assess the interaction of a ground surface of selected field roads on a vehicle. The result of direct measurement of the vertical acceleration captured on a drive axle and on a vehicle’s frame above the axle was addressed. The measurement results were analyzed within the context of possible planning of vehicle test requirements with the application of the method of testing mileage under the field conditions.
Źródło:
Scientific Journal of the Military University of Land Forces; 2018, 50, 3(189); 181-191
2544-7122
2545-0719
Pojawia się w:
Scientific Journal of the Military University of Land Forces
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Intensity of use of hybrid vehicles during the initial period of their operation
Autorzy:
Prochowski, Leon
Ziubiński, Mateusz
Powiązania:
https://bibliotekanauki.pl/articles/2124766.pdf
Data publikacji:
2022
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
hybrid vehicles
intensity of vehicle operation
extreme
mileage
satisfaction
buyers
Opis:
Extensive environmental protection activities include the promotion of alternative drive systems for motor vehicles. An important role in this field is played by hybrid vehicles, with their low operation costs being a strong marketing argument. Can such economies be conducive to the intensity of use of hybrid vehicles compared with vehicles with conventional drive systems? To answer this question, the intensity of use of hybrid vehicles was observed in a few different countries. The attention was focused on the occurrence of extreme (very low and very high) mileage values within comparable vehicle groups. The survey carried out has revealed distinct differences in the intensity of use of hybrid vehicles compared with motor vehicles with conventional drive systems (IC). The average mileage values for hybrid vehicles are higher than those recorded for conventional ones during the same period, but this difference can only be seen in the initial period of vehicle use, rapidly decreasing with vehicle operation years. The share of vehicles with extreme mileage values recorded during the period under observation, presented in the paper in several ways, declines with the years of vehicle use. In spite of that, however, the percentage of vehicles with extreme mileage values is high in HVs group against IC.
Źródło:
Archiwum Motoryzacji; 2022, 96, 2; 31--50
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intensity of motor trucks operation versus vehicles’ age, in several categories of engine cubic capacity
Autorzy:
Prochowski, L.
Powiązania:
https://bibliotekanauki.pl/articles/247425.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
motor vehicle operation management
motor truck mileage
intensity of vehicle operation
Opis:
Changes in the vehicle operation process, which take place with vehicle’s age, have been analysed on the grounds of data collected for over 3 000 motor trucks of more than 3 500 kg gross vehicle mass (GVM), being now in use in Poland. The analysis has covered a 20-year vehicle operation period (referred to as “service life planned”); the distance travelled by a vehicle during this period has been called “target mileage” (expressed in kilometres). As a measure of the intensity of vehicle operation, the “monthly mileage” has been adopted. The monthly mileage values specified in the article strongly depend on the category of engine cubic capacity. Some important characteristics of the mileage growth process, noticed in the recent years along with an intensive development of the road transport, have been presented. The vehicle mileage growth process has been shown for four categories of engine cubic capacity, on the grounds of regression lines based on a polynomial model. The vehicles with engines of more than 10 000 cm3 capacity reach more than 1/3 (i.e. 34.7-36.6%) of their target mileage for the first 60 months of operation, while covering only 2-5.3% of this target mileage during the last two years of their 20-year service life planned. During the first 5 years, the intensity of operation of vehicles belonging to this engine capacity category is four to five times as high as that determined for the last 5 years of the 20-year vehicle operation period under analysis. Calculations carried out have shown that the dataset under analysis includes vehicle categories where 90% of the target mileage is reached as early as after 69-70% of the service life planned. This shows that motor vehicles having been used for a short time predominate in the road transport of goods in Poland and that there is an interrelation between the rates of changes in the vehicle operation intensity and the engine capacity.
Źródło:
Journal of KONES; 2017, 24, 3; 221-228
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Projection of the demand for energy sources by car fleet in Poland by the year 2030
Prognoza popytu na nośniki energii przez park samochodowy w Polsce w perspektywie 2030 r.
Autorzy:
Chłopek, Z.
Waśkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/134224.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
car transport
car
annual mileage
fuel consumption
transport samochodowy
samochód
przebieg roczny
zużycie paliwa
Opis:
The paper presents an expert assessment of the number of passenger cars and light trucks (with a maximum mass not exceeding 3.5 Mg), trucks (with a maximum mass exceeding 3.5 Mg) and buses for 2010 and forecast up to the 2030 taking into account types of energy sources (petrol, diesel fuel, liquefied petroleum gas, natural gas and electricity). The average annual mileage and average operational consumption of energy sources have been estimated. On this basis, the projected energy sources consumption for the years 2010, 2015, 2020, 2025 and 2030 has been defined.
W opracowaniu przedstawiono eksperckie oszacowanie liczby samochodów osobowych, lekkich samochodów ciężarowych (o masie maksymalnej nie przekraczającej 3,5 Mg), samochodów ciężarowych (o masie maksymalnej przekraczającej 3,5 Mg) i autobusów dla 2010 r. i prognozę do 2030 r. z uwzględnienie rodzajów nośników energii (benzyna, olej napędowy, skroplony gaz ropopochodny, gaz ziemny i energia elektryczna). Oszacowano średnie roczne przebiegi oraz średnie eksploatacyjne zużycie nośników energii. Na tej podstawie wyznaczono dla lat 2010, 2015, 2020, 2025 i 2030 przewidywane zużycie nośników energii.
Źródło:
Combustion Engines; 2013, 52, 2; 63-74
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Linear positioning of railway objects
Autorzy:
Irlik, M.
Powiązania:
https://bibliotekanauki.pl/articles/196603.pdf
Data publikacji:
2017
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
railway
ERTMS
ETCS
safety systems
signalling
measurement
line mileage
kolej żelazna
systemy bezpieczeństwa
sygnalizacja
pomiar
Opis:
The article provides an explanation of the issue related to the linear positioning of railway objects in the context of preparing site data for automatic train protection systems, such as the European Rail Traffic Management System/European Train Control System (ERTMS/ETCS). This paper identifies and compares current approaches for an object’s position based on a line chainage for orientation and documentation purposes, as well as the object’s position based on a track axis for the calculation of real world distances, along with providing examples of measurement systems and presenting conclusions from test runs for ERTMS/ETCS Level 2 purposes.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2017, 96; 49-57
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
Influence of piston surface treatment on piston assembly friction in an eco-mileage vehicle engine
Autorzy:
Nakashima, Kohei
Uchiyama, Yosuke
Powiązania:
https://bibliotekanauki.pl/articles/2097601.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
eco-mileage vehicle engine
floating cylinder liner
fine particle bombarding
piston
piston assembly friction
tłok
tarcie układu korbowego
Opis:
This study investigated the effect on piston assembly friction after treating piston surfaces with a fine particle bombarding process, using a friction measurement apparatus with a floating cylinder liner, similar to an eco-mileage vehicle engine. Friction was measured in four conditions: (1) no treatment (standard piston in a commercially-available engine), (2) micro dimple treatment (45 μm ceramic particles were air-blasted onto the piston surface), (3) molybdenum disulfide (MoS2) shot treatment (1 μm MoS2 particles were air-blasted onto the piston surface), and (4) combination of the previous two micro dimple and MoS2 shot treatments (first 45 μm ceramic particles and then 1 μm MoS2 were air-blasted onto the piston surface). Results indicated that friction decreased in the following order: no treatment > micro dimple treatment > MoS2 shot treatment > combination of micro dimple and MoS2 shot treatments.
Źródło:
Combustion Engines; 2022, 61, 1; 18--23
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prediction of the mileage fuel consumption of passenger car in the urban driving cycle
Prognozowanie przebiegowego zużycia paliwa samochodu osobowego w cyklu miejskim
Autorzy:
Golebiewski, W.
Stoeck, T.
Powiązania:
https://bibliotekanauki.pl/articles/792391.pdf
Data publikacji:
2014
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
mileage fuel consumption
fuel consumption
passenger car
driving cycle
driving condition
operational parameter
linear velocity
rotational speed
engine
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2014, 14, 3
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of high-speed traction gearbox ratio on vehicle fuel consumption
Wplyw przelozenia szybkobieznosci na zuzycie paliwa pojazdu
Autorzy:
Golebiewski, W.
Stoeck, T.
Powiązania:
https://bibliotekanauki.pl/articles/792794.pdf
Data publikacji:
2012
Wydawca:
Komisja Motoryzacji i Energetyki Rolnictwa
Tematy:
high-speed traction
gearbox
fuel consumption
mileage fuel consumption
energy consumption
vehicle
engine torque
ecology
economy
linear velocity
Źródło:
Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 1
1641-7739
Pojawia się w:
Teka Komisji Motoryzacji i Energetyki Rolnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental development of apparatus to measure piston assembly friction in an eco-mileage vehicle engine
Autorzy:
Nakashima, Kohei
Uchiyama, Yosuke
Powiązania:
https://bibliotekanauki.pl/articles/133190.pdf
Data publikacji:
2019
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
eco-mileage vehicle engine
floating cylinder liner
piston assembly friction
piston ring
piston skirt
tarcie układu korbowego
pierścień tłokowy
płaszcz tłoka
Opis:
Apparatus was developed to measure piston assembly friction with a floating cylinder liner against crank angle, using components of an eco-mileage vehicle engine as much as possible. This apparatus was then used to investigate the effect of different sets of piston rings on piston assembly friction in an eco-mileage vehicle engine. Results indicated that, compared to the piston with all three rings (a top ring, a second ring and an oil ring), the piston with two rings (a top ring and an oil ring) reduced piston assembly friction at all engine temperatures and engine speeds. Another configuration of two rings, with the top ring and the second ring, but without the oil ring, reduced friction at a lower engine temperature and speed, but was almost the same as the three-ring set at a higher engine temperature and speed. Finally, a one-ring set, with only the top ring, further reduced friction, except at a higher temperature and speed, where friction was greater than the two-ring set without the second ring.
Źródło:
Combustion Engines; 2019, 58, 2; 55-59
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
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