Temat: CNG fuel - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Advantages and Disadvantages of Using Methane from CNG in Motor Vehicles in Polish Conditions
Autorzy:: Górniak, A.
Midor, K.
Kaźmierczak, J.
Kaniak, W.
Powiązania:: https://bibliotekanauki.pl/articles/2065030.pdf
Data publikacji:: 2018
Wydawca:: STE GROUP
Tematy:: methane
CNG
alternative fuel
Opis:: The current problems related to air pollution in Europe, but also in Poland, are forcing the search for solutions aimed at significantly reducing the amount of solid particles harmful to humans in the air. Road transport is responsible for almost half of the pollution, as it releases nitrogen oxides into the air. In view of the above, the authors of the article want to turn attention toward methane as a fuel alternative traditional ones, pointing to the possibility of its use by Poland and presenting its advantages and disadvantages.
Źródło:: Multidisciplinary Aspects of Production Engineering; 2018, 1, 1; 241--247
2545-2827
Pojawia się w:: Multidisciplinary Aspects of Production Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analiza porównawcza kosztów zużycia paliwa oraz parametrów technicznych autobusów marki Mercdens-Benz wykorzystywanych w MZK Jelenia Góra
The comperative analysis of fuel costs and technical specifications of Mercedes-Benz buses used in MZK in Jelenia Góra
Autorzy:: Tubis, Monika
Powiązania:: https://bibliotekanauki.pl/articles/1194482.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: autobus
napęd elektryczny
CNG
Diesel
Mercedes-Benz
MZK Jelenia Góra
parametry techniczne
koszty zużycia paliwa
bus
eletric drive
MZK in Jelenia Góra
technical specifications
fuel costs
Opis:: The article presents a comparison of Mercedes-Benz buses that use 3 different types of drive units, each powered by a different source – Diesel, CNG, and electricity. All 3 vehicles were operated at municipal department of transport (MZK) in Jelenia Góra, the presented analyzes are based on data obtained from this company. The analysis concerned the comparison of technical parameters and fuel costs of a given vehicle.
Źródło:: Journal of TransLogistics; 2020, 6, 1; 31--39
2450-5870
Pojawia się w:: Journal of TransLogistics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Analysis of performances of a dual-fuel turbocharged compression ignition engine
Autorzy:: Różycki, A.
Powiązania:: https://bibliotekanauki.pl/articles/247435.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dual fuel compression ignition engine
knock
engine head vibration amplitude
compressed natural gas (CNG)
common rail
Opis:: The paper describes research work on a full-scale dual-fuel 4-cylinder turbocharged compression ignition engine. Compressed natural gas (CNG) was applied as the main fuel. Selfignition of the air-fuel mixture was initiated from a diesel oil dose injected by a common rail system. The research was aimed to establish maximum CNG share in the mixture delivered into the cylinder. An excessive CNG share may result in "hard" engine operation. It may also lead to the occurrence of vibrations of piston-crank construction parts resulting in failure of this mechanism. These vibrations may originate from knocking combustion (selfignition of the air-fuel mixture in the zone of non-combusted mixture) or vibration excitation as a result of rapid pressure rise after selfignition. Boundary values of the CNG energy share were determined by analysing parameters related to the rate of pressure rise and rate of heat release as well as the engine head vibration amplitude represented by the voltage signal generated by the knock sensor. Boundary values of the above mentioned parameters were determined on the basis of measurements done on the engine fuelled in a standard mode. These parameters were registered at operating points corresponding to the maximum power and load. Then, there were done measurements of basic engine operating parameters at dual fuelling in chosen points of the load characteristic for the engine speed at which the engine fuelled in a standard mode had maximum torque. Load characteristics were done for three various diesel oil doses (constant over the whole range of engine load). Load changes were realized by changes ofCNG energy share in the fuel charge. Analysis of combustion process parameters and engine head vibrations showed that CNG energy share may reach 60%. Maximum torque is possible to obtain at 45% CNG energy share. 15% decrease of maximum torque was obtained.
Źródło:: Journal of KONES; 2010, 17, 3; 393-399
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Analysis of the share of natural gas in the total fuel supply dose on the combustion process in a CRDI engine
Autorzy:: Wierzbicki, Sławomir
Boruta, Grzegorz
Konieczny, Łukasz
Łazarz, Bogusław
Powiązania:: https://bibliotekanauki.pl/articles/2098083.pdf
Data publikacji:: 2021
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:: CNG
Common Rail
dual-fuel engine
course of combustion
heat release
silnik dwupaliwowy
przebieg spalania
wydzielanie ciepła
Opis:: Natural gas is one of the potential combustion engine fuels whose proportion in the overall energy balance is expected to increase. Owing to some of its properties, its use requires a dual-fuel supply system; thus, the use of natural gas as a fuel for diesel engines is currently limited. Systems that supply gas fuel to diesel engines do not usually interfere with the engine control system. This solution significantly reduces system-installation costs. However, as demonstrated in the present study, it considerably changes the course of the combustion process, which increases thermal and mechanical loads. In this case, the combustion process can be controlled by changing the liquid fuel injection pressure or advancing the injection angle. This, however, requires interference with the engine control system.
Źródło:: Transport Problems; 2021, 16, 1; 141--150
1896-0596
2300-861X
Pojawia się w:: Transport Problems
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Bariery rozwoju rynku sprężonego gazu ziemnego do napędu pojazdów w Polsce
Barriers of market development of the compressed natural gas for car refueling in Poland
Autorzy:: Kwaśniewski, K.
Sas, J.
Powiązania:: https://bibliotekanauki.pl/articles/300071.pdf
Data publikacji:: 2009
Wydawca:: Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:: sprężony gaz ziemny
CNG
stacje tankowania CNG
paliwa ekologiczne
compressed natural gas
refuelling stations
ecological gas (fuel)
Opis:: Prognozy dotyczące głównych paliw alternatywnych do pojazdów na rok 2020 oceniają potencjał rynkowy paliw produkowanych z biomasy na 15%, gazu ziemnego na 10%, LPG na 5% i wodoru na kilka procent. Strategie rozwoju rynku NGV w Europie czy w regionie Azji i Pacyfiku są zdecydowanie różne. Substytucja paliw ropopochodnych w Polsce na zakładanym poziomie 2% w roku 2010 i 5% w roku 2015 nie będzie możliwa do zrealizowania, cele strategiczne w tym zakresie należy zatem skorygować. Na obecnym etapie rozwoju rynku w Polsce kluczowym zagadnieniem są strategie wdrożeniowe oraz koszty. Rozwiązania w zakresie wytwarzania pojazdów oraz sprężania gazu są technologią w pełni dojrzałą i nie stwarzają żadnego ryzyka operacyjnego. Doświadczenia krajów europejskich wskazują, że osiągnięcie "masy krytycznej" wymaga wybudowania w Polsce kilkuset czynnych całodobowo stacji sprężania, a analiza kosztów operacyjnych najlepszych rozwiązań w kraju pokazuje, że budowa i eksploatacja stacji może być efektywna przy cenie CNG na poziomie 1,35 zł/Nm3 (dotyczy poziomu cen I kwartału 2009), a więc zapewniającej konkurencyjność wobec paliw ropopochodnych. Jednak PGNiG S.A. powinno dokonać reorientacji strategii eksploatacji posiadanych stacji sprężania, standaryzacji rozwiązań w zakresie ich budowy i wyposażenia oraz polityki cen CNG.
The forecast for 2020 for the main alternative gas for vehicles estimate the economic (market) potential of fuel produced of bio-mass at 15%, natural gas at 10%, LPG at 5% and hydrogen at a few percent. The development strategies of the NGV market in Europe and in the Asia-Pacific area are completely different. The substitution of fuel oil derivatives in Poland on the estimated level of 2% in 2010 and 5% in 2015 will not be possible to implementation (realization); thus the strategic aims in this area have to be corrected (adjusted). The implementing strategies and costs are the crucial issues at the present stage of the market development in Poland. The solutions of vehicles production and gas compression are the fully developed technology and do not create any operational risk. Based on the European countries experiences we can say that in order to reach the critical mass it is necessary to build in Poland a few hundred CNG gas stations, opened 24 hours. The analysis of operational costs of the best solutions in Poland shows that construction and exploitation of the gas stations can be effective at the 1,35 zł/Nm3 CNG price (for the prices of the first three months); so it guarantees the competitiveness toward the fuel oil derivatives. In that case PGNiG S.A. is obliged to reorientate its strategy of exploitation their CNG gas stations, to standardize the solutions of constructing and equiping as well as the CNG price policy.
Źródło:: Wiertnictwo, Nafta, Gaz; 2009, 26, 3; 527-537
1507-0042
Pojawia się w:: Wiertnictwo, Nafta, Gaz
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Choice of a pilot dose in dual fuel self-ignition engine of a generator, depending on its load
Autorzy:: Imiołek, M.
Piętak, A.
Śmieja, M.
Wierzbicki, S.
Powiązania:: https://bibliotekanauki.pl/articles/247241.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
gas engine
dual fuel powering
CNG
Opis:: One of the basic problems concerning dual fuel powering of self-ignition engines is to determine the minimal dose of diesel oil injected into the combustion chamber in order to trigger self-ignition. Most research conducted to date on double-fuel powering self-ignition has been carried out on engines with mechanical injection systems, which does not ensure the possibility of obtaining very small diesel oil doses initiating self-ignition. The original system of fuelling the engine with diesel oil was replaced with a laboratory Common Rail system. The basic parameters of injector operation were controlled by a specially-developed system ensuring continuous choice of parameters of injector operation. The examined engine was fitted with a prototypical system of methane-air fuelling and a system for controlling and adjusting the supplied dose of methane This study presents the results of research aiming at determining the pilot dose injected into the combustion chamber of the engine to ensure the course of combustion in the engine operating under various loads. The results presented in the paper concern tests of a single-cylinder self-ignition engine, HATZ 1B40, operating in a generator adopted for CNG fuelling.
Źródło:: Journal of KONES; 2011, 18, 4; 129-136
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: CNG injector research for dual fuel engine
Autorzy:: Majczak, A.
Barański, G.
Siadkowska, K.
Sochaczewski, R.
Powiązania:: https://bibliotekanauki.pl/articles/102178.pdf
Data publikacji:: 2017
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: CNG
diesel
gas flow
gas injector
dual fuel
Opis:: The article presents the tests results of the prototype design of hydraulically assisted injector that is designed for gas supply into diesel engines. The construction of the injector allows for its positioning in the glow plug socket, so that the gas is injected directly into the combustion chamber. The cycle analysis of the four-cylinder Andoria ADCR engine with a capacity of 2.6 dm3 for different crankshaft rotational speeds allowed to determine the necessary time for fuel injection. Because of that, it was possible to determine the required mass flow rate of the injector, for replacing as much of the original fuel by gaseous fuel. To ensure a high value of flow inside the injector, supply pressure equal to 1 MPa was applied. High gas supply pressure requires high value of valve opening forces. For this purpose a injector with hydraulic control system, using a liquid under pressure for the opening process was designed. On the basis of air pressure measurements in the flow line after the injector, the analysis of opening and closing of the valve was made. Measurements of outflow mass of the injector were also carried out. The results showed that the designed injector meets the requirements necessary to supply ADCR engine with CNG fuel.
Źródło:: Advances in Science and Technology. Research Journal; 2017, 11, 1; 212-219
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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: 9.

Tytuł:: Concept of a multi-fuel, low-power generator with a self-ignition, common rail gas engine
Autorzy:: Piętak, A.
Imiołek, M.
Imiołek, A.
Powiązania:: https://bibliotekanauki.pl/articles/247142.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: dual-fuel feeding
CNG
steering
renewable fuel
Opis:: An idea of using biomass for generating electricity and heat leads to new solutions for power generators, adapted to be supplied with gaseous and liquid biofuels. At present, there is a growing interest in low-power generators. This type of energy production is termed 'scattered energy generation'. It is expected that generating energy in small units situated close to energy consumers may bring about substantial benefits. It is assumed that in a scattered energy generation system, energy will be produced from local fuels, such as broadly understood biomass as a primary component for production of gaseous and liquid biofuels to power low-power energy generators. An adequate amount of biomass must be secured to ensure that biogas can be produced all year round. The easiest way to store highly efficient biomass is to ensile maize and rye as well as grass. The amounts of biogas obtained from these two types of silage are comparable. Using rye as a renewable energy source for production of either bioethanol or biogas is economically viable for at least two reasons: rye grows on poor class soils and rye cultivation technology can be reduced to just nitrogen fertilization. In conclusion, it seems reasonable to generate energy in Poland in scattered energy generation systems from crops grown for this purpose. Currently, gas-powered engines are being in several ways.
Źródło:: Journal of KONES; 2011, 18, 4; 349-356
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Consequences of using LNG as a marine fuel
Autorzy:: Herdzik, J.
Powiązania:: https://bibliotekanauki.pl/articles/245352.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: marine fuel
ships propulsion
LNG
CNG
natural gas
atmosphere protection
Opis:: The paper presents the consequences of LNG usage as a marine fuel. The restrictions of harmful substances emission to atmosphere from marine engines, especially in controlled emission areas (ECA and SECA areas) of nitrogen oxides and sulfur oxides, forces the engine makers to use additional installations, which operation may fulfill the purification requirements of exhaust gases. The option is a usage gaseous fuels, especially liquid natural gas (LNG) or compressed natural gas (CNG). There is no an alternative – only gaseous fuels may fulfill the Tier3 level without exhaust gases purification process. In prognosis about 650 ships (in high scenario about 2000) will be fuelled LNG in the year 2025. It was written why the liquid fuels stay unattractive. The basic problem is still the limited network of LNG distribution in ports and the lack of small vessels or barges for LNG bunkering. The proposition of design of LNG tank and barges were presented. The next problem is a deficiency of LNG bunker port in deep sea before entering the ECA areas. The controlled emission areas will extend in the near future. The LNG or CNG seemed to be the preferring fuel in industry due to CO2 emission limits and environmental taxes. The demand for LNG in prognosis to 2025 in bunker ports varies 0.1-18% of total fuel bunker depending on legislation and low or high case, in base case it will be 3%. It depends on the conviction of ship-owners that is no return from transition to the LNG or CNG ship fuelling. The examples to LNG ship conversion were described.
Źródło:: Journal of KONES; 2013, 20, 2; 159-166
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Dual-fuel feeding diesel engine behind assistance CNG with liquid dose piloting fuel renewable
Dwupaliwowy silnik o zapłonie samoczynnym do zasilania biopaliwowych agregatów prądotwórczych
Autorzy:: Piętak, A.
Wierzbicki, S.
Imiołek, M.
Mikulski, M.
Powiązania:: https://bibliotekanauki.pl/articles/245620.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: silnik o zapłonie samoczynnym
zasilanie dwupaliwowe
CNG
sterownie
paliwa odnawialne
automatic ignitions engine
dual-fuel feeding
steering
renewable fuel
Opis:: It discusses different construction solutions of dual -fuel engines. It shows influence parameters decisive about combustion different fuels in dual- fuel engine. It says about the way to adaptation 1.9 TDI engine to feeding with liquid piloting dose (ethyl ester of higher Fatty Acid) and indirect injection dose of methane. It discus specific steer of engine feeding with two fuels procedures, pay special attention on cooperation original inject pump controller with work out by authors controller methane quantity. It shows comparative examinations results braking this engine. Examinations were made with using automatical engines test bench A VL with PUMA system. Indicate, that two-fuel supplying is advantageous than supplying of engine car fuel from the point of view of lowest emission of harmful association, especially in range of fumigation particularly exhaust fumes and level of oxide of carbon. These research have exerted necessity ofprecise steering of overtake brake piloting dose cornerfrom the point of view of appearing problems with excessive emission of noise related with combustion and raising medias temperature exactly in range of nominal load. Results of these examinations could be instruction to further works in range of realising feeding diesel engines method fuels gas II generation source from gasification other organical biomass pyrolysis.
Omówiono różne rozwiązania konstrukcyjne silników o zasilaniu dwupaliwowym. Przedstawiono wpływ parametrów decydujących o spalaniu różnych paliw w silniku dwupaliwowym. Opisano sposób adaptacji silnika 1.9 TDI do zasilania dawką pilotującą (ester etylowy wyższych kwasów tłuszczowych) i wtryskiwanym pośrednio metanem. Omówiono specyficzne procedury sterowania silnika zasilanego dwoma paliwami, zwracając szczególną uwagę na współpracę oryginalnego sterownika pompy wtryskowej z opracowanym przez autorów sterownikiem ilości metanu. Przedstawiono porównawcze wyniki badań hamownianych tego silnika. Badania zrealizowano przy wykorzystaniu zautomatyzowanej hamowni silnikowej AVL z systemem PUMA. Wskazano, że zasilanie dwupaliwowe jest korzystniejsze niż zasilanie silnika olejem napędowym ze względu na niższą emisję związków szkodliwych, szczególnie w zakresie zadymienia spalin i poziomu dwutlenku węgla. Badania te wykazały także konieczność precyzyjnego sterowania kątem wyprzedzenia wtrysku dawki pilotującej ze względu na pojawiające się problemy z nadmierną emisją hałasu związanego ze spalaniem i podniesieniem temperatury mediów szczególnie w zakresie obciążeń nominalnych. Wyniki tych badań mogą stanowić wskazówkę do dalszych prac w zakresie realizacji metod zasilania silników o ZS paliwami gazowymi 2-generacji pochodzącymi ze zgazowania lub pirolizy biomasy organicznej.
Źródło:: Journal of KONES; 2009, 16, 3; 311-318
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Effect of CO2 content in CNG on the combustion process in a dual-fuel compression ignition engine
Wpływ zawartości CO2 w CNG na przebieg spalania w dwupaliwowym silniku o zapłonie samoczynnym
Autorzy:: Wierzbicki, S.
Mikulski, M.
Śmieja, M.
Powiązania:: https://bibliotekanauki.pl/articles/133672.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:: dual-fuel compression ignition engine
carbon dioxide
combustion process
emission of toxic compounds
dwupaliwowy silnik o ZS
CNG
dwutlenek węgla
proces spalania
emisja związków toksycznych
Opis:: Seeking alternative sources of energy for its more effective use, reducing emissions of toxic pollutants to the atmosphere and counteracting global warming are nowadays the major areas of development in the power industry, including the design of combustion engines. Currently, the research into the use of new fuels, which may be effective sources of energy, is performed by many scientific centres. The use of biogas for production of energy in cogeneration systems is one of the ways for improvement of energy balance. In the research described herein, a dual-fuel compression ignition engine was fuelled with gaseous fuel with variable CNG and CO₂ ratios. The tests were performed for engine fuelling controlled by both an original controller with the software optimised for single-fuel operation and for the injection of a pilot dose of diesel controlled by a dedicated controller enabling the adjustment and control of the injection and dose parameters. This paper presents the effect of carbon dioxide content in gaseous fuel on the combustion process and emission of toxic compounds in the engine examined.
Poszukiwanie alternatywnych źródeł energii, zwiększenie efektywności jej wykorzystania, a także zmniejszenie emisji związków toksycznych do atmosfery i walka z globalnym ociepleniem są głównymi współczesnymi kierunkami rozwoju przemysłu energetycznego, w tym również silników spalinowych. Obecnie w wielu ośrodkach naukowych prowadzone są badania nad wykorzystaniem nowych paliw, które mogą być efektywnym źródłem energii. Jednym ze sposobów poprawy bilansu energetycznego jest wykorzystanie biogazu do wytwarzania energii w układach kogeneracyjnych. W opisanych w artykule badaniach dwupaliwowy silnik o zapłonie samoczynnym zasilany był paliwem gazowym o zmiennych proporcjach CNG i dwutlenku węgla. Badania przeprowadzono przy sterowaniu zasilaniem silnika zarówno przez oryginalny sterownik oprogramowany do pracy jednopaliwowej, jak i przy sterowaniu wtryskiem dawki pilotującej oleju napędowego przez dedykowany sterownik umożliwiający regulację i kontrolę parametrów wtrysku tej dawki. W artykule przedstawiono wpływ zawartości dwutlenku węgla w paliwie gazowym na przebieg procesu spalania oraz emisję związków toksycznych badanego silnika.
Źródło:: Combustion Engines; 2015, 54, 3; 91-101
2300-9896
2658-1442
Pojawia się w:: Combustion Engines
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Environmental impact evaluation of diesel engine fuelled with CNG
Autorzy:: Kumar, Neeraj
Arora, Bharat Bhushan
Maji, Sagar
Powiązania:: https://bibliotekanauki.pl/articles/27311552.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: Diesel
CNG
Dual fuel
Emissions
diesel
cng
emisja spalin
sprężony gaz ziemny
podwójne paliwo
Opis:: The uncertainty in the supply of crude oil, increasing the number of vehicles and rising air pollution, especially in urban areas, has prompted us to look for alternative fuels. It is understood that using Compressed Natural Gas (CNG) in IC engines could be a mid-term solution to these problems. It is well established that CNG has better combustion characteristics and low emissions compared to conventional gasoline and diesel fuel. In the present study, an experiment was conducted to evaluate the engine performance and exhaust emissions using various percentages of CNG in dual fuel mode. CNG was mixed in the intake manifold’s air stream, and diesel was injected after the compression of the CNG air mixture. This paper presents experimental results of 40%,60%, and 80% CNG in the air stream. Engine performance and emissions are presented and discussed at a speed of 1200 rpm to 1500 rpm in steps of 50 rpm. The results of the experiments showed that adding CNG to diesel engines in dual-fuel combustion significantly impacted performance and emissions. Compared to single diesel fuel combustion, dual fuel combustion increases brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC) at all CNG energy shares and engine speeds. Carbon monoxide (CO) and hydrocarbon (HC) emissions were increased, while nitrogen oxide (NOx) and smoke opacity were decreased in dual fuel combustion compared to single diesel fuel.
Źródło:: Archives of Environmental Protection; 2023, 49, 1; 79--84
2083-4772
2083-4810
Pojawia się w:: Archives of Environmental Protection
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Evaluation of the possibility of using methane from cng by potential motor vehicle users
Autorzy:: Górniak, Adam
Midor, Katarzyna
Kaźmierczak, Jan
Powiązania:: https://bibliotekanauki.pl/articles/104118.pdf
Data publikacji:: 2019
Wydawca:: Stowarzyszenie Menedżerów Jakości i Produkcji
Tematy:: CNG fuel
evaluation of CNG benefits
air pollution
paliwo CNG
ocena korzyści CNG
zanieczyszczenie powietrza
Opis:: Today’s world is facing the necessity of reducing air pollution. One of the alternatives is to limit pollution related to road transport by using CNG fuel. The European Union is imposing increasingly strict requirements regarding the cleanness of car fumes, and the Polish government is endeavouring to take actions aimed at reducing the pollution related to car use by planning the development of transport electromobility. In this article, the authors want to draw attention to methane as an alternative to traditional fuels. The article presents the results of a survey conducted among drivers, which regarded their readiness to use CNG-powered cars. The results indicate that while respondents appreciate the ecological value of this fuel, they are also worried about safety, which is contradicted by the analysis of CNG advantages and disadvantages.
Źródło:: Quality Production Improvement - QPI; 2019, 1, 1; 583-589
2657-8603
Pojawia się w:: Quality Production Improvement - QPI
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Investigation of Harmful Chemical Compounds from Dual-Fuelled Diesel Engine
Autorzy:: Smigins, Ruslans
Skrzek, Tomasz
Górska, Milena
Pawlak, Grzegorz
Powiązania:: https://bibliotekanauki.pl/articles/101910.pdf
Data publikacji:: 2020
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: diesel engine
CNG
harmful emissions
alternative fuel
silnik wysokoprężny
szkodliwe emisje
paliwo alternatywne
Opis:: This paper investigated the impact of the exhaust gas recirculation on the concentration of selected harmful chemical compounds from the AVL 5402 research diesel engine powered with diesel fuel (DF) and compressed natural gas (CNG). The engine was operated in the dual fuel mode. It means that the engine was conventionally fuelled by regular diesel fuel and simultaneously by CNG dosed into the inlet pipe. The necessary tests were carried out for the mixtures containing 30, 50 and 70% of CNG (by energy content) in the total chemical energy delivered together with diesel fuel (DF) into the combustion chamber. The research was conducted for the stationary conditions of the engine operation at 1200 rpm and constant 1004 Joules of a fuel chemical energy delivered in each cycle into the combustion chamber. Under such conditions, the impact of the EGR rate changed in range of 0–50% on the emissions of selected unburned hydrocarbons (HC), carbon monoxide (CO), nitrogen oxides (NOx) as well as particulate matter (PM), was evaluated. The obtained results confirmed that the EGR system is effective in the reduction of the NOx formation for all tested fuel mixtures. Nevertheless, it was found that the addition of CNG combusted in the diesel engine generates more harmful pollutants in comparison with diesel fuel. However, in some cases the concentration of NOx as well as PM was comparable or lower. It suggests that the combustion of CNG in diesels allows achieving environmental benefits. In this case, further optimization of the engine fuel supply system is necessary.
Źródło:: Advances in Science and Technology. Research Journal; 2020, 14, 4; 21-29
2299-8624
Pojawia się w:: Advances in Science and Technology. Research Journal
Dostawca treści:: Biblioteka Nauki

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