Wyniki wyszukiwania - Biblioteka Nauki

1

Influence of Butanol-Diesel Oil Fuel Blends on Marine Engine Vibration Characteristics

100%

Kluczyk M.

|

tom Vol. 18, no 5

372--384

EN

One of the primary sources contributing to vibrations in operational marine diesel engines is the combustion process of fuel injected into the cylinders. Hence, alterations in the injection process and the quality and type of fuel supplied to the engine can modulate the combustion parameters, consequently impacting noise and vibration levels. A literature review on this subject suggests that while some research has been conducted, mainly focusing on small engines in the automotive sector, there's been limited exploration in the marine domain. Despite the recent surge in manufacturers' interest in electrifying road transport vehicles, a similar trend has not been observed in sea transport besides short-range ferries, mainly due to the substantial range requirements of vessels. It is conceivable that the utilisation of liquid fuels in shipbuilding will persist. Presently, the predominant marine fuels are fossil-based, the reserves of which are progressively declining. However, the widespread adoption of alternative fuel additives like butanol holds promise in curbing fossil fuel consumption. One of the conditions to be met by a new commonly used fuel for marine engines is its good properties in limiting the parameters of accompanying processes like vibrations. The article delineates a comparative analysis of parameter values related to the vibrations of a marine engine fueled by different blends of butanol and diesel oil. Laboratory tests were conducted on a six-cylinder marine engine under load using a water brake, encompassing various engine loads to replicate real-world operating conditions accurately.

2

Marine diesel engine common rail injectors monitoring with vibration parameters

63%

Kluczyk M. , Grządziela A.

|

tom Vol. 20, No. 3

37--44

EN

The paper presents a results of vibration tests of common rail injectors operating in diesel engines. The most common methods of diagnosing common rail injectors (CR) as well as the most common damage of injectors of this type have been described. The results and analyzes of tests obtained during measurements on two different test stands were presented. Obtained results allowed for the preliminary determination of diagnostically sensitive parameters, which may allow the development of the injector diagnostics method without the need to stopping the engine.

PL

W artykule przedstawiono wyniki badań drganiowych wtryskiwaczy Common Rail pracujących w silnikach o zapłonie samoczynnym zasilanych. Opisano najpowszechniej stosowane metody diagnozowania wtryskiwaczy Common Rail (CR), jak również najczęstsze uszkodzenia wtryskiwaczy tego typu. Zaprezentowano wyniki i analizy badań uzyskane podczas pomiarów na dwóch różnych stanowiskach testowych. Uzyskane wyniki pozwoliły na wstępne określenie parametrów wrażliwych diagnostycznie, co może pozwolić na opracowanie metody diagnostyki wtryskiwaczy bez potrzeby zatrzymywania silnika.

3

Analysis of the Use of Undervolting to Reduce Electricity Consumption and Environmental Impact of Computers

51%

Muc A. , Muchowski T. , Kluczyk M. , Szeleziński A.

|

tom Tom 22, cz. 2

791--808

EN

This paper presents a method of lowering the processor’s voltage and temperature in which the computer operates by performing an operation called undervolting. By using undervolting it is possible to reduce electricity consumption and the amount of heat generated by computer workstations by up to 30%. This problem is particularly relevant for institutions that use a large number of computers. The more the computers are subjected to the higher computational load, the more effective the mechanism of undervolting is. Undervolting the processor does not reduce its performance, but lowers its operating temperature, has a positive impact on its life span and power consumption. Maintaining a low temperature of operation for computer hardware is essential to reduce operating and repair costs. The paper also presents the results of environmental research aimed at assessing the validity and effectiveness of undervolting.

PL

W pracy przedstawiono metodę obniżania napięcia procesora i temperatury pracy komputera poprzez wykonanie operacji zwanej undervoltingiem. Przez zastosowanie undervoltingu można obniżyć nawet o 30% zużycie energii elektrycznej i ilość wydzielanego ciepła przez stanowiska komputerowe. Problem ten jest szczególnie istotny w przypadku instytucji, które korzystają z dużej liczby komputerów. Skuteczność mechanizmu jest tym większa im komputery poddane undervoltingowi są bardziej obciążone obliczeniowo. Wykorzystywanie undervoltingu w konfiguracji procesora nie zmniejsza jego wydajności, a obniża jego temperaturę pracy, wpływa pozytywnie na jego żywotność i zużycie energii elektrycznej. Utrzymanie dobrej kultury pracy sprzętu komputerowego jest kluczowe, by obniżyć koszty eksploatacji oraz napraw. W pracy przedstawiono również wyniki badań środowiskowych, których celem była ocena zasadność i efektywności stosowania undervoltingu.

4

Ensuring Equal Bandwidth for Remote Connections to the Local Company Server

51%

Muc A. , Muchowski T. , Kluczyk M. , Szeleziński A.

|

tom Vol. 3, Iss. 1

285--295

EN

Creating the required IT infrastructure to enable the ability for comfortable remote working is not an easy task. Improper configuration can create the possibility of taking over the whole bandwidth of the link by one device. Increasing bandwidth introduces extra costs and does not completely eliminate the problem – it will be more difficult to take over the whole bandwidth, but it is still possible. The solution to the problem may be the use of clouds and VPS, but it is associated with high costs and the need to entrust company data to providers of these services. Due to security and too high costs, this may not be an optimal solution. An alternative solution may be to use QoS along with PCQ. This mechanism allows to ensure equal division of the bandwidth between the devices under its control. With an appropriate configuration, QoS can eliminate the problem of taking over the whole bandwidth and ensure equal access to resources.

5

The process of acquiring, collecting, processing and archiving data for the SHM system designed to identify defects in thin-walled structures

45%

Muchowski T. , Szeleziński A. , Murawski L. , Muc A. , Kluczyk M.

|

2022

|

tom Vol. 52, iss. 4

135--142

EN

The article shows the results of the preparatory steps taken to create the artificial intelligence used in the automatic recognition of defects in ship thin-walled structures. The above steps are used to create a university private cloud and a computer system maintaining a dataset of vibration signal samples. In the article, a prototype of the private cloud was designed and developed, a model of the vibration sample was prepared, and a microservice was designed aimed at sharing the obtained data. The article demonstrates the results of the completed development.

PL

W artykule przedstawiono wyniki przeprowadzonych działań przygotowawczych do stworzenia sztucznej inteligencji wykorzystywanej w automatycznym rozpoznawaniu defektów okrętowych konstrukcji cienkościennych. Przeprowadzone kroki służą stworzeniu uczelnianej chmury prywatnej oraz systemu informatycznego utrzymującego zbiór danych próbek sygnałów drganiowych. W ramach artykułu zaprojektowano oraz stworzono prototyp chmury prywatnej, przygotowano model próbki drganiowej oraz zaprojektowano mikroserwis służący udostępnianiu uzyskanych danych. Artykuł przedstawia wyniki wykonanej pracy.