Temat: diesel combustion - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Injection system assessment to optimize performance and emissions of a non - road heavy duty diesel engine : experiments and CFD modelling
Autorzy:: Auriemma, M.
Iannuzzi, S.
Powiązania:: https://bibliotekanauki.pl/articles/246478.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel combustion
heavy duty engines
STAR-CD
Opis:: The advancing emissions requirements and the customer demand for increased performance and fuel efficiency are forcing the diesel engine technology to keep improving. In particular, the large diesel engines are undergoing to a significant restriction in emission standards. Reaching the new limits requires innovative solutions, improved calibration and controls of the engine combustion technology, as well as the optimization of the injection system that has experienced the most fundamental development over the last decade. The objective of the paper is to present preliminary results of an investigation for the development of an efficient combustion system for marine diesel engines. The effect of different engine parameters on performance and engine out emissions were evaluated. Specifically, different nozzle geometries, injection pressure, injection timings were taken into account. The investigation was carried out both experimentally and numerically. Three different nozzles geometries for three different values of the start of injection were tested. The in-cylinder pressure, rate of heat release, NOx and soot were evaluated for a high load engine condition. The experimental activity was carried out on a large displacement single cylinder direct injection diesel engine equipped with a high-pressure common rail injection system able to manage multiple injections. The engine test bench was equipped with an external air supercharger able to set high air boost levels. The system controls the intake air temperature by means of a heater exchanger. The numerical investigation was carried out using the commercial CFD STAR-CD code in a three-dimensional domain including the cylinder head and piston bowl. Combustion behaviour was simulated using the 3 Zones Extended Coherent Flame Model (ECFM3Z).
Źródło:: Journal of KONES; 2012, 19, 3; 19-30
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Identification of components of vibration signal from the Hatz 1B40 engine
Autorzy:: Boruta, G.
Imiołek, M.
Powiązania:: https://bibliotekanauki.pl/articles/245448.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: mechanics
compression-ignition (diesel) internal combustion engine
vibration and sound
engine control
Opis:: An experiment is described consisting in recording of vibration signals on the body of a HATZ 1B40 single-cylinder compression-ignition engine, applied among other things as a driving source for FOGO power generators. Characteristic time courses fragments of the recorded vibration signals were linked to occurrence of specific phenomena in the working engine and with operation of specific engine mechanisms generating these signals. Potential was found for utilization of the vibration signal recorded on the body of a HATZ 1B40 compression-ignition engine for optimization of simultaneous feeding of the engine with diesel oil and natural gas. There are potential possibility of application of a simple knock sensor from a spark-ignition engine as a component of a feeding control system of a compression-ignition engine with diesel oil and natural gas. Theoretical time course of vibration signal of the HATZ 1B40 engine, example oscilloscope trace of time courses of signals reflecting, location of mounting of the vibration acceleration sensor on the engine, allocation of the theoretical and empirical time course of the vibration signal of the HATZ 1B40 engine, example vibration signal time courses recorded at the head of an engine fed with various mixtures of air and natural gas and diesel oil with oval-marked fragments corresponding to diesel oil injection are presented in the paper.
Źródło:: Journal of KONES; 2011, 18, 3; 45-51
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Occupational Exposure to Polycyclic Aromatic Hydrocarbons During Diesel Combustion
Autorzy:: Pośniak, M.
Makhniashvili, I.
Kozieł, E.
Kowalska, J.
Powiązania:: https://bibliotekanauki.pl/articles/90764.pdf
Data publikacji:: 2003
Wydawca:: Centralny Instytut Ochrony Pracy
Tematy:: diesel combustion exhaust
occupational exposure
workplace air
carcinogenic compounds
PAHs
narażenie zawodowe
ekspozycja
zagrożenia chemiczne
zagrożenia zdrowia
nowotwory
spaliny
Opis:: Identification and determination of polycyclic aromatic hydrocarbons (PAHs) in Diesel exhaust in the working environment and assessment of workers’ occupational exposure to these suspected human carcinogens were the aim of this experimental investigation. The range of exposure factors calculated on the basis of 9 individual PAH concentrations determined in personal air samples shows that time-averaged concentration of these compounds did not exceed the Polish Maximum Admissible Concentration (MAC) value for PAHs, that is, 2 µg x m-3. The highest concentrations of PAHs were determined in the breathing zone of forklift operators. The maximum exposure factor was 0.427 µg x m-3(about 1/4 of MAC).
Źródło:: International Journal of Occupational Safety and Ergonomics; 2003, 9, 1; 17-26
1080-3548
Pojawia się w:: International Journal of Occupational Safety and Ergonomics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Cmbustion of mixture of diesel fuel with gasoline in a compression ignition engine
Autorzy:: Tutak, W.
Jamrozik, A.
Powiązania:: https://bibliotekanauki.pl/articles/242181.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion
engine
diesel
gasoline
combustion phases
Opis:: Paper presents results of experimental investigation of combustion process of diesel-gasoline blend in compression ignition direct injection engine. The researches were conducted for constant load of engine at constant rotational speed. Operating parameters of engine powered with diesel-gasoline blend were at the same level as for engine powered by pure diesel fuel. The preliminary study was conducted using CFD modelling. Based on encouraging modelling results preliminary experimental research was carried out. It turned out that it is possible to co-burning diesel with the gasoline as a blend. A mixture of 20, 40 and 60% of gasoline with diesel was used. It was concluded that an increase in gasoline fraction in blend causes delay of start of the combustion process. The homogeneity of the fuel-air mixture was improved due to longer ignition delay, which is accompanied by higher values of pressure rise rate. With 20 and 40% of gasoline fraction causes higher peak pressure compared to reference fuel-burning ware obtained. Up to 40% of gasoline fraction, the BSFC was kept at the same level as for reference fuel. It was observed that with the increase in gasoline fraction up to 40% NOx emission increased as well. Based on the carried out tests it can be stated that it is possible to co-burn gasoline with diesel in a compression ignition engine while maintaining the invariable engine operating parameters and exhaust emissions.
Źródło:: Journal of KONES; 2018, 25, 2; 391-398
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Wpływ zmiennych własności czynnika roboczego na parametry klasycznych obiegów Otto, Diesla i Sabathego
Influence of variable specific heats of working fluid on performance of air standard Otto, Diesel and Sabathe cycles
Autorzy:: Puławski, G.
Powiązania:: https://bibliotekanauki.pl/articles/386265.pdf
Data publikacji:: 2011
Wydawca:: Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:: silnik spalinowy
Diesel
konwersja energii
combustion engine
diesel
Opis:: W artykule przedstawiono wpływ zmiennych właściwości czynnika roboczego na parametry w charaktery- stycznych punktach klasycznych obiegów silników tłokowych wewnętrznego spalania takich jak Otto, Diesel i Sabathe oraz na sprawność konwersji energii wyznaczaną z zastosowaniem tych obiegów. Wyniki analiz przedstawiono w postaci tabel i wykresów obrazujących zmiany parametrów obiegu wskutek zmienności ciepła właściwego czynnika roboczego.
This paper presents influence of variable specific heats of working fluid on the performance of air standard Otto, Diesel and Sabathe cycles. The mathematic models of air standard cycles with temperature dependent specific heats were made and compared to those which use constant specific heats. The results obtained in this study, presented in tables and charts, show signif- icant variations between the performance of cycles with constant and variable specific heats of working fluid.
Źródło:: Acta Mechanica et Automatica; 2011, 5, 1; 71-78
1898-4088
2300-5319
Pojawia się w:: Acta Mechanica et Automatica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: The effect of location on the combustion chamber for the toxicity exhaust in self-ignition engine Ursus 4390
Autorzy:: Kalina, P.
Powiązania:: https://bibliotekanauki.pl/articles/247388.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: piston engine
diesel
combustion chamber
Opis:: As a part of the research work done on the engine URSUS 4390 which aimed at increasing power while reducing exhaust gas emissions, intake channels in the head, shape of the combustion chamber and compression ratio were modified. Proper injection equipment was selected and atomizer nozzles were constructed. In the first phase of the research, toroidal combustion chamber was located in factory design location. In the article there are presented results of exhaust gas emissions in selected operating points of engine URSUS 4390 for various positions of experimental combustion chamber. An innovative method of changing the position of the combustion chamber related to the piston axis was developed. A rotating insert with eccentrically extruded combustion chamber was mounted in piston axis. Rotation of the insert by a given angle resulted in displacement of combustion chamber around the axis of rotation. For each particular position of combustion chamber, concentration of toxic flue gas components and smoke index was measured at full load with rotational speed of 1400 and 2000 rpm. Proposed piston construction with rotating insert allowed to significantly decreasing duration of the research, which aimed at verification of combustion chamber relative location to injector and inlet nozzle. This way the necessity of construction of new sets of pistons and lapping them each time was avoided. As a result of the work, 11 locations of combustion chamber were tested. The study allowed picking the position of combustion chamber, which guarantees lowest emissions of toxic flue gas components.
Źródło:: Journal of KONES; 2015, 22, 2; 97-102
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: CFD modeling of thermal cycle of supercharged compression ignition engine
Autorzy:: Tutak, W.
Jamrozik, A.
Gruca, M.
Powiązania:: https://bibliotekanauki.pl/articles/247943.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion
modelling
CFD
diesel
injection
Opis:: Results of modelling of thermal cycle of turbocharged compression ignition IC engine are presented. The object of investigation was a 6CT107 turbocharged auto-ignition internal combustion engine powered by diesel oil, installed on an ANDORIA-MOT 100 kVA/ 80 kW power generating set in a portable version. The performed simulations of the combustion process have provided information on the spatial and time distributions of selected quantities within the combustion chamber of the test engine. The numerical analysis results have been juxtaposed with the results of indicating the engine on the test stand. Modelling of the thermal cycle of an auto-ignition piston engine in the AVL FIRE was carried out within the study. Advanced numerical submodels were used to analysis of combustion process, such as: Extended Coherent Flame Model (ECFM-3Z), turbulence model k-zeta-f, injection submodels with evaporation, collisions, coalescence and other. Intake and exhaust processes were included during modelling. This resulted in a lot of information about the intake, fuel mixing, ignition process and the exhaust process. Results of modelling were compared with results from real engine.
Źródło:: Journal of KONES; 2012, 19, 1; 465-472
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: The influence of diesel oil improvers on indices of atomisation and combustion in high-efficiency engines
Autorzy:: Pielecha, I.
Pielecha, J.
Skowron, M.
Mazanek, A.
Powiązania:: https://bibliotekanauki.pl/articles/259914.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: diesel oil
diesel engine
improvers
fuel injection
fuel combustion
Opis:: The process of fuel combustion in a diesel engine is determined by factors existing during liquid fuel injection and atomisation. The physicochemical properties of the fuel to a large extent decide upon the quality of this phase of cylinder fuelling. So it is important to ensure appropriate properties of a fuel affecting its atomisation and, as a result, combustion. The paper deals with the topic of diesel oil improvers and the analysis of their influence on atomisation and combustion indices. In the studies base diesel oil and a diesel fuel improved by a package of additives, were used. The process of conventional and improved fuel injection was analysed by using optical examinations. The amount of released heat was evaluated during the studies carried out on combustion. Significant aspects of the applied improvers in relation to fuel injection and its combustion have been indicated.
Źródło:: Polish Maritime Research; 2017, 3; 99-105
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: The effect of diesel fuel mixture and camelina oil ester on selected parameters of combustion process
Autorzy:: Orliński, P.
Powiązania:: https://bibliotekanauki.pl/articles/243639.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: camelina oil ester
combustion
diesel engine
Opis:: This paper presents the results of comparative research into basic physical and chemical properties of pure diesel fuel and two types of mixtures: Camelina oil ester (Camelina oil ester content in the mixture was 10% and 15%) and diesel fuel. Camelina oil ester was used to show that it can also be used as an additive plant to diesel fuel (according to the plans of the European Union). Similarly to on a large scale used ester of rapeseed oil. The base fuel in the research was clean diesel fuel (without the addition of ester as in the case of diesel fuel available at petrol stations).The use of fuels with different physical and chemical properties to supply the diesel engine and the use of measuring equipment used for determining the parameters of fast-changing operation resulted in the determination of the operating medium average pressure during the combustion process. On the basis of the experimental pressure characteristics of heat release were identified. Analysis of these characteristics determined the proportion of total combustion phases of kinetics and diffusion, depending on the type of fuel and operating conditions. Finally, the paper shows that the fuel with different physicochemical properties has a significant effect on the combustion process. A comparative assessment of the suitability of tested mixtures for operational use was made.
Źródło:: Journal of KONES; 2013, 20, 3; 291-298
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Premixed combustion of acetylene-hydrogen fuel mixtures for thermodynamic state generation in a constant volume combustion vessel
Autorzy:: Johnson, S.
Nesbitt, J.
Lee, S. -Y.
Naber, J. D.
Powiązania:: https://bibliotekanauki.pl/articles/242374.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: combustion engine
diesel engine
combustion processes
pressure vessel
preborn
Opis:: Flammability limits and flame speeds of dilute-lean fuel mixtures of hydrogen (H2) and acetylem premixed with oxygen (02) and nitrogen (N2) were examined with a detailed kinetics model. These mixtures are used in a preburn in a constant volume combustion vessel to create elevated temperatures and pressures with gas compositions that represent the thermodynamic state in a diesel engine combustion chamber at fuel injection and auto ignition. A mixture of hydrogen and acetylene with combined atomic hydrogen to carbon ratio (HCR) of 1.85 was used to match that of typical diesel fuel and results are shown in comparison to a previously used mixture with a HCR of 1.17. The lower flammability limit (LFL) of the HCR 1.85 fuel mixture was found at an equivalence ratio of 0.235, while flame speed and adiabatic combustion temperatures were also predicted for post preburn product oxygen levels between O and 21 percent. Flame speeds were shown to decrease with a reduction in oxygen concentration, an increase in nitrogen dilution, while combustion temperatures increased over most of this range. Trends for this relation of flame speed and temperature are presented and a new premixed fuel mixture with an HCR of 1.85 is proposed.
Źródło:: Journal of KONES; 2009, 16, 2; 199-208
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Heat release characteristics in combustion chamber of CI engine
Autorzy:: Jankowski, A.
Lagowski, P.
Slezak, M.
Powiązania:: https://bibliotekanauki.pl/articles/244001.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: internal combustion engines
diesel engines
combustion processes
heat release
Opis:: On the basis of the internal heat balance of CI engine with direct fuel injection, the quantity of heat transported during the combustion process from the combustion zone was determined. The real indicator diagrams are the bases for determination of the heat release Characteristics during the combustion process and making up of the internal heat balance. These diagrams were worked out for the engine fuelled with diesel oil for three sets of the injection timing and for work of the engine according to the full load engine Characteristics, and the load Characteristics taken at the engine speedb for the maximum engine torque. Tests with the three different injection timing were carried out. Tests with the load characteristics of the compression-igniting engine for five values of the power were carried out. The pressure in the cylinder of the engine during combustion process was recorded by means of liąuid cooled a piezo-electric quartz sensor with a load amplifier. Characteristics of heat release depended on the composition, temperature and the mol quantity of the working charge in the cylinder during the combustion process. Characteristics of the heat release were determined with the use of the novel calculation program. The program was worked out by authors at the assumption that the process of complete combustion was finished at the moment of the opening of the engine exhaust valve. For purpose of simplification calculation of the quantity of heat lost into the cooling system, the radiation, dissociation and incomplete combustion, were assumed to change during the combustion process in a linear way.
Źródło:: Journal of KONES; 2010, 17, 3; 155-164
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: The influence of the shape of the combustion chamber on exhaust gases toxicity in T370 engine
Autorzy:: Kalina, P.
Kawalec, M.
Powiązania:: https://bibliotekanauki.pl/articles/243782.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engine
combustion chamber
geometry
toxicity
Opis:: An important issue in construction of combustion chamber in compression-ignition engines is proper selection of its shape and size. Both features are dependent on several factors such as fuel injector location and angle, spray atomizer selection (amount of holes, their diameter and angular position), location of inlet valve and air turbulence. By doing research on prototype engine T370, an analysis of influence of combustion chamber size and its modifications going towards lip construction on flue gas toxicity was done. The diameter and depth of combustion chamber was being changed while maintaining the same compression ratio. After that, a modification of tested combustion chambers was made by creating so called “lip”, which aim was to create a swirl of injected fuel in the vertical plane. To visualize the changes in swirl, a numerical analysis of fuel injection into combustion chamber was made. In discussed study, emission tests were performed according to ECE-R49. During the research six combustion chambers with diameters 60, 63 and 66 mm (and their modification) were investigated. Tests were performed for several types of injectors and different injection timing. However, for analysis of combustion chamber size the results are presented for the same injectors but with optimized injection timing.
Źródło:: Journal of KONES; 2015, 22, 2; 104-108
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: The effect of aviation fuel JP-8 and diesel fuel blends on engine performance and exhaust emissions
Autorzy:: Labeckas, G.
Slavinskas, S.
Vilutienė, V.
Powiązania:: https://bibliotekanauki.pl/articles/949492.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engine
jet fuel
diesel fuel
autoignition
combustion
performance
exhaust emissions
Opis:: The article presents bench test results of a four-stroke, four-cylinder, naturally aspirated, DI diesel engine operating with neat JP-8 fuel (J) and its blends with Diesel fuel (D) in following proportions by volume: 90/10 (J+10D), 70/30 (J+D30), 50/ 50 (J+D50), 30/70 (J+D70), and 100% diesel fuel (DF). The purpose of the research was to analyse and compare changes occurred in the autoignition delay, combustion events, engine performance efficiency, emissions, and smoke of the exhaust when running on JP-8 fuel, jet-diesel fuel blends, and diesel fuel at a full (100%) engine load and speed of 1400 min–1 at which maximum torque occurs and rated speed of 2200 min–1. It was found that the start of injection (SOI) and the start of combustion (SOC) occurred earlier in an engine cycle and the autoignition delay decreased by 9.0% and 12.7% due to replacement of aviation JP-8 fuel with diesel fuel at a full load and the latter speeds. Maximum in-cylinder pressure was 6.8% and 4.0% higher when operating with diesel fuel, whereas brake thermal efficiency was 3.3% and 7.7% higher, and brake specific fuel consumption 2.8% and 7.0% lower when using fuel blend J+D50 compared with the respective values measured with neat JP-8 fuel. Emissions of nitric oxide (NO) and nitrogen oxides (NOx) were 13.3% and 13.1% higher from a straight diesel running at speed of 1400 min–1, and 19.0% and 19.5% higher at a higher speed of 2200 min–1. The carbon monoxide (CO) emissions and total unburned hydrocarbons (HC) decreased 2.1 times and by 12.3% when running with fuel blend J+D70 at speed of 2200 min–1 compared with those values measured with jet fuel. Smoke of the exhaust was 53.1% and 1.9% higher when using fuel blend J+D10 than that of 46.9% and 70.0% measured with jet fuel at speeds of 1400 and 2200 min–1. The engine produced 34.5% more smoke from combustion of fuel blend J+D70 at the low speed of 1400 min–1, but smoke converted to be 11.3% lower when operating at a higher speed of 2200 min–1.
Źródło:: Journal of KONES; 2015, 22, 2; 129-138
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: Influence of chosen parameters of water fuel microemulsion on combustion processes, emission level of nitrogen oxides and fuel consumption of CI engine
Autorzy:: Jankowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/247478.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: diesel engines
combustion process
ecology
emulsion
microemulsions
Opis:: The microemulsion is the emulsion with dimension of molecules approx. micrometre and smaller. Such microemulsion of water and diesel oil creates new quality and lets on obtainment ecological and economic of effects, as well as eliminates the disadvantageous influence common emulsions, or unprofitable effects of the injection of water to inlet system of the engine, direct to combustion chambers, as well as the sequential injection of water direct to combustion chambers. The essence of apply of the microemulsion is also improve catalytic influence of small molecules of water on combustion process, what, beside decreasing temperature combustion gases, influences both emission level components of toxic combustion gases, as and the level of the specific fuel consumption. The paper presents different ways of microemulsion production, novel way of microemulsion production, which does not demand apply of mixers and suffers obtainment of microemulsion with the volumetric content of water in diesel oil do 40% under conditions of laboratory and stabile the microemulsion with content of water in diesel oil to 25%. Results of laboratory research involving basic parameters of the microemulsion and engine researches with measurements emission ingredients of toxic exhaust gases and fuel consumptions are presented involving basic parameters of the microemulsion and engine researches with measurements emission ingredients (NOx, soot, fuel consumption) of toxic exhaust gases and fuel consumptions are presented in the paper.
Źródło:: Journal of KONES; 2011, 18, 4; 593-600
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Investigation into particulate size distributions in the exhaust gas of diesel engines fuelled with biodiesel blends
Autorzy:: Chuepeng, S.
Theinnoi, K.
Xu, H. M.
Wyszynski, M. L.
York, A. P. E.
Hartland, J. C.
Qiao, J.
Powiązania:: https://bibliotekanauki.pl/articles/248072.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: biodiesel
PM
combustion
diesel
PM size distribution
Opis:: Particulate matter (PM) size distributions in the exhaust gas of biodiesel blend fuelled diesel engines have been studied by experimenting firstly on a single cylinder equipped with a pump-line-injector injection system and secondly for comparison on a V6 DI engine equipped with a common rail fuel injection system. Both engines were operated with a biodiesel (RME) blend of B30 and ultra low sulphur diesel fuel (ULSD). Several engine load conditions with and without exhaust gas recirculation (EGR) were selected. Particulate number concentrations vs. the electrical mobility equivalent diameter were examined using a fast differential mobility spectrometer. The effect of engine operating conditions including EGR rates on particulate emissions has been investigated. It is found that PM sizes from combustion of B30 without EGR operation are generally smaller than those from ULSD while number concentrations are higher. This can result in lower PM mass estimates for the B30 case if due care is not taken. When EGR is applied to control nitrogen oxides emissions, both the total PM number and mass are increased and shifted toward the larger sizes for both fuels used in the test. The calculated total PM mass from B30 combustion is lower than in the ULSD case for all the tested engine operating conditions.
Źródło:: Journal of KONES; 2008, 15, 3; 75-82
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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