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Wyświetlanie 1-15 z 47
Tytuł:
Biogas as a fuel for diesel engines
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/246845.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biogas
methane
diesel engine
dual-fuel supply system
Opis:
The pursuit of reduced greenhouse gas emissions, as well as the increased share of renewable fuels in the overall energy balance has led to a search for alternative energy sources. One of the fuels on which great hopes are set as fuel for engines is biomethane or biogas, whose main component is methane. Biogas can be obtained from different products by using different technologies, so that it has potential as a widelyavailable fuel, which is quite easy to produce. The percentage of methane in biogas depends on the technology for obtaining biogas and ranges from 35% to around 75%. The largest biogas sources can be animal farms, where it is obtained from animal excrement. Another source is sewage treatment plants and rubbish dumps, where substantial quantities of biogas are obtained as a result of natural processes occurring in waste dumping sites or sewage. Biogas can also be acquired from waste obtained from fruit and vegetable processing as well as waste from meat plants. This paper examines the possibility of using biogas as a fuel for diesel engines. In these engines, the combustion of biogas (methane) requires the application of a dual-fuel supply system in which liquid fuel initiating gas fuel selfignition will be injected into the combustion chamber along with methane. The paper also contains example results showing the effect of the methane dose on the course of the combustion process in diesel engines.
Źródło:
Journal of KONES; 2012, 19, 3; 477-482
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Jubileusz 60-lecia Instytutu
The Building Research Institute 60th Anniversary
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/183072.pdf
Data publikacji:
2005
Wydawca:
Instytut Techniki Budowlanej
Tematy:
Instytut Techniki Budowlanej
60 lat ITB
jubileusz
historia
działalność
Źródło:
Prace Instytutu Techniki Budowlanej; 2005, R. 34, nr 4, 4; 3-26
0138-0796
Pojawia się w:
Prace Instytutu Techniki Budowlanej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of a common rail system using a signal analyser
Autorzy:
Wierzbicki, S.
Stolarski, M.
Powiązania:
https://bibliotekanauki.pl/articles/950151.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Common Rail
EOBD
signals
electric
signal analyser
on-board diagnostics
Opis:
Self-ignition engines are currently used to drive lorries, agricultural and road construction machines, as well as passenger cars. Common Rail supply systems are widely used in such engines. Arguments for using these systems include the simple construction of a system as well as practically unlimited control of fuel feeding (division of a fuel dose into several portions), which allows for controlling the fuel combustion process. This facilitates optimisation of the combustion process in limiting toxic emissions, which is the main evaluation criterion for modern combustion engines. Operation of an engine with a Common Rail system is controlled by an Electronic Diesel Control (EDC), which is responsible not only for controlling the supply system, but also for the diagnostics of the whole engine. The diagnostic monitors embedded in the controller supervise the operation of the supply system, but also of the whole engine, including the systems responsible for reducing toxic emissions released to the atmosphere, in accordance with the European On Board Diagnostic (EOBD) standard. Unfortunately, despite sophisticated diagnostic functions, defects sometimes occur in vehicles with engines with a CR system, which are not signalled by EOBD systems. In such cases, an additional tool is needed to help a diagnostician to identify the cause of improper operation of an engine. This article presents several examples to describe the diagnostics of a Common Rail system using an analyser of diagnostic electric signals to detect the cause of such defects.
Źródło:
Journal of KONES; 2017, 24, 3; 317-324
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling of Flow and Temperature Field in an Economizer
Autorzy:
Brumerčík, F.
Sojcak, D.
Lukáč, M.
Nieoczym, A.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/117888.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
economizer
main part of boiler
modelling
CFD
Opis:
This article deals with the economizer as one of the main parts of a boiler. Economizers and air heaters perform a key function in providing high overall boiler thermal efficiency by recovering the low level energy from the flue gas before it is exhausted to the atmosphere. The most common and reliable economizer design is the bare-tube, in-line, cross-flow type. To reduce capital costs, most boiler manufacturers build economizers with a variety of designs to enhance the controlling gas-side heat transfer rate. From this point of view it creates a lack for an investigation and modeling of these parts.
Źródło:
Applied Computer Science; 2016, 12, 2; 63-73
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The conception of modular monitor of car exploitation parameters
Autorzy:
Śmieja, M.
Ziejewski, K.
Wierzbicki, S.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/247378.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
automotive
communication networks
car parameter monitoring
CAN
modular system
Opis:
Current tendencies in electronics and informatics development going towards Internet of Things (IoT), Big Data or Data Cloud technologies create new possibilities in acquiring and utilizing data. The article presents the concept of modular monitoring of vehicles operating parameters. Presented device registers data from the OBD system and a set of independent, configurable sensor modules. Data from the OBD system is acquired via protocol. CAN Bus with a DLC connector. The signal from sensor modules is transferred via a Bluetooth wireless network. The registered data can be storage on board as CD card memory or alternatively on a typical user interface such as laptop, tablet, cell phone etc. The communication with the user interface is realised with USB. Moving vehicles modular monitoring system presented in the article can be used to attain a fuller representation of the vehicles state in relation to its environment. The base assumption of the device is maximal flexibility in term of sensors versality as well as possibilities of assembly on board. In connection with the concept, a prototype of the device was made and tested with an inertial measurement unit (IMU) module and a pressure sensor. Appliances modules are based on Cortex M4 and M0 processing units. A users interface in LabVIEW and examples of registered signals are showed at the end of the article.
Źródło:
Journal of KONES; 2017, 24, 4; 321-326
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analiza degradacji pojazdów w eksploatacji
An analysis of degradation of vehicles in operation
Autorzy:
Michalski, R.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/301873.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Naukowo-Techniczne Towarzystwo Eksploatacyjne PAN
Tematy:
stan techniczny
zużycie części
degradacja pojazdu
technical state
wear
degradation vehicle
Opis:
Pojazdy mechaniczne są stosunkowo złożonymi obiektami technicznymi w których w trakcie funkcjonowania zachodzą złożone procesy zużycia. Intensywność zużycia poszczególnych zespołów pojazdu jest uzależniona nie tylko od ich konstrukcji, ale także od warunków ich eksploatacji. W niniejszym artykule przestawiono mechanizmy i czynniki wpływające na degradację pojazdów mechanicznych.
Vehicles are quite complex technical objects and complicated wear processes accompany their exploitation. The intensity of degradation of particular systems of a vehicle depends not only on a construction but also on the exploitation conditions. In the following paper the mechanisms and conditions influencing degradation of vehicles have been presented.
Źródło:
Eksploatacja i Niezawodność; 2008, 1; 30-32
1507-2711
Pojawia się w:
Eksploatacja i Niezawodność
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring konstrukcji stalowych. Część 1
Monitoring of steel constructions
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/128802.pdf
Data publikacji:
2016
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
monitoring
systemy pomiarowe
urządzenia pomiarowe
projektowanie budowlane
konstrukcje stalowe
measurement systems
measurement devices
construction design
steel constructions
Opis:
Jedną z najbardziej istotnych kwestii związanych z każdym obiektem budowlanym jest bezpieczeństwo konstrukcji. Zapewnienie tego bezpieczeństwa wymaga odpowiedniego przebiegu zarówno procesu projektowania i realizacji, jak i późniejszej eksploatacji powstałego obiektu.
The whole series (Monitoring of steel constructions - Builder July 2016 - January 2017) describes the topic of construction design technical monitoring, including the expected results of their use, its formal and legal conditions, as well as the advantages of it. A brief overview of the measuring methods used in the monitoring systems has been described, along with the technical possibilities of their application, as well as general rules of designing monitoring systems, solutions and method adjustment to the type and complexity of a building's construction. The choice of elements and places to be monitored has been presented, as well as system configuration tips. The problem has been illustrated by construction design monitoring system examples.
Źródło:
Builder; 2016, 20, 7; 92-94
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring konstrukcji stalowych. Część 2
Monitoring of steel structures
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/129383.pdf
Data publikacji:
2016
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
monitoring
systemy pomiarowe
urządzenia pomiarowe
projektowanie budowlane
konstrukcje stalowe
measurement systems
measurement devices
construction design
steel structures
Opis:
Najprostsze zarówno w realizacji, jak i w interpretacji są pomiary przemieszczeń, które pozwalają uzyskać informacje o zachowaniu się elementu/ustroju konstrukcyjnego albo dużego fragmentu konstrukcji.
The whole series (Monitoring of steel structures – „Builder” July 2016 – January 2017) describes the topic of construction design technical monitoring, including the expected results of their use, its formal and legal conditions, as well as the advantages of it. A brief overview of the measuring methods used in the monitoring systems has been described, along with the technical possibilities of their application, as well as general rules of designing monitoring systems, solutions and method adjustment to the type and complexity of a building's construction. The choice of elements and places to be monitored has been presented, as well as system configuration tips. The problem has been illustrated by construction design monitoring system examples.
Źródło:
Builder; 2016, 20, 8; 60-63
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zintegrowany system informatyczny sterowania pojazdów
Integrated it system for vehicle control
Autorzy:
Niziński, S.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/327174.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
mechatroniczny system automatycznej kontroli
system informatyczny
mechatronic system of automatic control
IT system
Opis:
Niniejsza praca jest poświecona wybranym problemom związanym z zastosowaniem systemów informatycznych w transporcie samochodowym. Rozpatrzono następujące zagadnienia: pojazd jako mechatroniczny system automatycznej regulacji, zintegrowany informatyczny system zarządzania eksploatacją pojazdów. Przedstawiono koncepcję zintegrowanego informatycznego sterowania pojazdów.
Paper presents some aspects of IT system implementation into vehicle transport. The following issues were discussed: vehicle as mechatronic system of automatic control, integrated IT system of vehicle operation management. The concept of integrated IT system for vehicle control was presented.
Źródło:
Diagnostyka; 2004, 30, T. 2; 47-52
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of an integrated laboratory control system for a dual - fuel diesel engine
Autorzy:
Śmieja, M.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/246809.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biogas
diesel engine
dual-fuel feed system
microprocessor engine control system
Opis:
The need to limit greenhouse gases emissions and to increase the share of renewable fuels in the general energy balance forces people to look for new alternative energy sources. Methane or biogas, in which methane is the main combustible component, is one of such fuels, which is believed to be a promising diesel engine fuel. It is worth emphasizing that biogas might be believed to be one of the cleanest fuels due to the fact that it can be produced from waste, which in normal conditions decomposes releasing methane into the atmosphere. Methane (biogas) combustion in diesel engines requires a dual-fuel feed system, in which the liquid fuel initiating auto-ignition will be injected into the combustion chamber. It comes as a consequence of a relatively high spontaneous combustion temperature of methane, which is not able to self-ignite in the chamber without an external source of ignition. This article presents a concept of constructing an integrated laboratory control system, which will provide optimal feed control of complex composition gaseous fuel and of the injection of an appropriate pilot dose of a liquid fuel into the combustion chamber. The solution proposed to control a dual-fuel diesel engine, which was mounted on the test bed, enables performing comprehensive diesel engine research, ensuring not only stable working conditions for the engine, but also granting an opportunity to smoothly regulate the composition of the artificial biogas which feeds the engine and to control basic parameters of the liquid fuel pilot dose.
Źródło:
Journal of KONES; 2012, 19, 3; 451-458
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring konstrukcji stalowych. Przykładowe systemy. Część 6
Monitoring of steel structures
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/129002.pdf
Data publikacji:
2016
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
monitoring
systemy pomiarowe
urządzenia pomiarowe
projektowanie budowlane
konstrukcje stalowe
measurement systems
measurement devices
construction design
steel structures
Opis:
W artykule przedstawiono przykładowe, zasadniczo różne rozwiązania monitoringu: system monitoringu konstrukcji budynku handlowego, system monitoringu konstrukcji budynku użyteczności publicznej (widowiskowo-sportowego), a także system monitoringu zadaszenia stadionu.
The whole series (Monitoring of steel structures – Builder July 2016 – January 2017) describes the topic of construction design technical monitoring, including the expected results of their use, its formal and legal conditions, as well as the advantages of it. A brief overview of the measuring methods used in the monitoring systems has been described, along with the technical possibilities of their application, as well as general rules of designing monitoring systems, solutions and method adjustment to the type and complexity of a building's construction. The choice of elements and places to be monitored has been presented, as well as system configuration tips. The problem has been illustrated by construction design monitoring system examples.
Źródło:
Builder; 2016, 20, 12; 92-96
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of fuel injection parameters on the combustion process in a self-ignition engine
Autorzy:
Imiołek, M.
Piętak, A.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/243984.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
injection pressure
injector opening time
fuel injection advance angle
Opis:
This paper presents the effect of the main parameters of fuel injection, such as injection angle and injector opening time, on the combustion process in a self-ignition engine. The study continues the research aimed at optimising the bi-fuel feeding of self-ignition engines with a main fuel dose of methane (CNG). The results described in the paper apply to a HATZ 1B40 one-cylinder engine, which was adapted for being powered with methane. Examinations of the engine powered with a pilot dose of mechanically-injected diesel oil revealed the necessity to adjust the fuel injection advance angle. To this end, the mechanical system offuel supply was replaced with a Common Rail, with controllable fuel injection pressure, fuel injection advance angle and injector opening time. The results presented in the paper show the characteristics of the injector output depending on the fuel pressure in the Common Rail and on the duration of the electric impulse which opens the injector. Moreover, the article presents examples of pressure courses in the combustion chamber at a constant fuel dose and with a different fuel injection advance angle. An example of the combustion pressure course at a constant fuel dose and variable injection pressure and injector opening time is given.
Źródło:
Journal of KONES; 2010, 17, 3; 143-148
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Monitoring konstrukcji stalowych. Część 3 – Metody pomiarowe – pomiary odkształceń
Monitoring of steel structures
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/128618.pdf
Data publikacji:
2016
Wydawca:
PWB MEDIA Zdziebłowski
Tematy:
monitoring
systemy pomiarowe
urządzenia pomiarowe
projektowanie budowlane
konstrukcje stalowe
measurement systems
measurement devices
construction design
steel structures
Opis:
Pomiary odkształceń pozwalają uzyskać lokalne informacje o zmianach w konkretnych miejscach – jak pokazuje praktyka, są one jednak trudniejsze w interpretacji, a co za tym idzie, prawidłowa ocena tych wyników nastręcza pewnych trudności.
The whole series (Monitoring of steel structures – Builder July 2016 – January 2017) describes the topic of construction design technical monitoring, including the expected results of their use, its formal and legal conditions, as well as the advantages of it. A brief overview of the measuring methods used in the monitoring systems has been described, along with the technical possibilities of their application, as well as general rules of designing monitoring systems, solutions and method adjustment to the type and complexity of a building's construction. The choice of elements and places to be monitored has been presented, as well as system configuration tips. The problem has been illustrated by construction design monitoring system examples.
Źródło:
Builder; 2016, 20, 9; 82-84
1896-0642
Pojawia się w:
Builder
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inteligentny pojazd mechaniczny jako mechatroniczny obiekt diagnozowania
Intelligent motor vehicle as a mechatronic object of diagnosis
Autorzy:
Niziński, S.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/327898.pdf
Data publikacji:
2006
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
sztuczna inteligencja
pojazd mechaniczny
mechatronika
diagnostyka
artificial intelligence
motor vehicle
mechatronic engineering
diagnostic
Opis:
W pracy zdefiniowano inteligentny pojazd mechaniczny jako system mechatroniczny automatycznej regulacji. Rozpatrzono elementy metodyki diagnostyki takich urządzeń. Przedstawiono koncepcje zintegrowanego informatycznego systemu sterowania, scalającego i koordynującego pracę wszystkich elementów, będącego podstawowym narzędziem inteligentnego pojazdu mechanicznego.
The paper defines the motor vehicle as a mechatronic system of automatic regulation. Elements of diagnostic methodology for such devices were reviewed. The concept of integrated IT supported control system integrating and coordinating operation of all components and representing the basic tool of an intelligent motor vehicle was presented.
Źródło:
Diagnostyka; 2006, 2(38); 101-108
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of the parameters of pilot dose injection in a dual fuel diesel engine on the combustion process
Autorzy:
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/246181.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diesel engine
injection pressure
injector opening time
fuel injection advance angle
course of combustion
Opis:
The paper presents the effect of the main parameters of pilot dose ignition: injection pressure, injection advance angle and injector opening time on the combustion process in a dual fuel diesel engine. The study continues the research conducted at the Department of Mechatronics of the University of Warmia and Mazury, Olsztyn, on optimisation of dual fuel self-ignition engines with CNG as the main fuel dose. The results presented in the paper were obtained with a single-cylinder engine HATZ 1B40, adapted to methane combustion. The results presented in the paper show the recorded changes of pressure in the combustion chamber with a constant fuel pilot dose and different ignition advance angles. Scheme of fuelling and measurement systems, view of engine indicating system, average changes of pressure in the combustion chamber, average changes of pressure in the combustion chamber and average changes of pressure in the combustion chamber at dual fuel engine supply with diesel oil at varied pilot dose injection angle, effects of advance angle of the pilot dose injection on the maximum pressure of combustion, at various proportions of diesel oil and CNG, average changes of pressure in the combustion chamber at double-fuel engine fuelled with diesel oil and various shares of methane in the dose powering the engine, CNG consumption as a function of the advance angle of the pilot dose injection for various shares of the pilot dose are presented in the paper.
Źródło:
Journal of KONES; 2011, 18, 3; 499-506
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-15 z 47

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