Wyniki wyszukiwania - BazTech

1

The concept of a mobile automated diagnostic and dynamometer station for heavy trucks

Chojnowski Janusz

Combustion Engines

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2023

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R. 62, nr 2

122--128

EN

Trucks are a key element that performs transport functions in many sectors of human activity. This makes ensuring their proper maintenance and performance critical. One of the solutions to this problem is the concept of a mobile automated testing and testing station. A mobile diagnostic and dynometric station based on a 6-foot container was built at the Military University of Technology in Warsaw. This bench is a self-contained unit that can be transported to various locations and carry out on-site testing and diagnostics of heavy trucks. The station is equipped with a fully open system and software that can accurately measure the performance and efficiency of the truck's engine and driveline and enforce specific automated diagnostic processes analogous to quality control tests during the production process. This information can then be used to make informed maintenance and repair decisions, helping to minimize downtime and increase overall vehicle life. The mobile diagnostic and dynamic station also provides a convenient and cost-effective alternative to traditional off-site testing methods, making it a valuable tool for transport companies and fleet managers.

2

Safety in the use of car gas fuel installations

Chojnowski Janusz

Combustion Engines

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2022

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R. 61, nr 2

3--9

EN

The safe use of gas fuel installations in vehicles is guaranteed by legal and technical aspects. These topics are included in this study. The regulations ensuring safety in the operation of the mentioned fuel systems serve as a solution for potentially hazardous situations. The components of propane-butane and CNG fueling systems are designed, manufactured and tested to maximize their safety of use. The regulations [6-8] define the guidelines for the arrangement and assembly method of the system components, and additionally, the assembly service itself may be performed only by an authorized workshop with granted permissions. Installations using gaseous fuels are safer than conventional fuels in the event of a collision or fire, as long as the user of the installation does not gross negligence in operation and maintenance. The article also discusses the context of the restriction in access to the car infrastructure for cars powered by gaseous fuels.

3

Analysis of the market structure of long-distance transport vehicles in the context of retrofitting diesel engines with modern dual-fuel systems

Chojnowski Janusz, Karczewski Mirosław

Combustion Engines

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2022

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R. 61, nr 1

13--17

EN

This work contains considerations on the structure of the road tractor market in Poland in the context of their types of fuel supply systems and the possibility of adapting modern dual-fuel solutions in them. The current injection solutions in most vehicles available on the market indicate the possibility of highly effective use of modern dual-fuel or RCCI fuel supply solutions.

4

A review of technical solutions for RCCI engines

Szamrej Grzegorz, Karczewski Mirosław, Chojnowski Janusz

Combustion Engines

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2022

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R. 61, nr 2

36--46

EN

Engines working in dual-fuel mode need special conditions to ignite air-fuel mixture without spark plug in a good moment with high combustion efficiency. To create homogenous air-fuel mixture the conditions in the cylinder are even more demanding. Many concepts of ignition was developed, but the most effective needs perfect mixing of fuel and air, which is a serious technical challenge. Technical solutions for dual-fuel engines cover the complexity of these problems thus leading to the further development of ignition systems in internal combustion engines. Fuel supply systems, the operation strategy of them, the shape of the combustion chamber are the most important elements to change and develop for correct operation of dual-fuel engines. The literature analysis showed a small amount of research carried out to optimize the operation of dual-fuel engines The variety of engines in which a dual-fuel system can be used requires much more research about them, and solutions necessary for their correctly operation.

5

Potencjał hydrorafinowanego oleju roślinnego (ang. HVO - Hydrotreated Vegetable Oil) jako biopaliwa wysokoreaktywnego w dwupaliwowych układach zasilania

Chojnowski Janusz, Nogas Patrycja

Biuletyn Wojskowej Akademii Technicznej

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2021

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Vol. 70, nr 2

73--87

PL

w czasach intensywnych badań dotyczących zmniejszenia emisji gazów cieplarnianych do atmosfery z sektora motoryzacyjnego inżynierowie i badacze znajdują efektywne rozwiązania umożliwiające osiągnięcie ten cel. Emisję dwutlenku węgla można zmniejszyć poprzez zwiększenie sprawności silnika spalinowego lub zmniejszenie zawartości węgla w spalanym paliwie. Połączeniem obu tych założeń może być wykorzystanie nowoczesnych układów zasilania dwupaliwowego do silników o zapłonie samoczynnym (zs), w których dawką pilotażową paliwa wysokoreaktywnego jest hydrorafinowany olej roślinny HVO) będący ekologicznym substytutem oleju napędowego. temat wykorzystania HVO jako paliwa pilotażowego jest niezbadany empirycznie, jednak informacje dostępne na jego temat wskazują na zasadność takich zastosowań.

EN

In times of increased efforts to reduce greenhouse gas emissions to the atmosphere from the automotive sector, engineers and researchers are finding effective solutions to achieve this goal. The reduction of carbon dioxide emissions can be achieved by increasing the efficiency of the internal combustion engine or by reducing the carbon content in the fuel burned. The combination of both of these assumptions can be the use of modern dual-fuel systems for diesel engines in which the pilot dose of highly reactive fuel is hydrotreated vegetable oil (HVO), which is an ecological substitute for diesel oil. The topic of the use of HVO as a pilot fuel is empirically unexplored, however the available information on it indicates the validity of such applications.