Wyniki wyszukiwania - BazTech

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Wpływ eteru dietylowego w mieszaninie z olejem napędowym na dynamikę przyspieszania silnika o zapłonie samoczynnym

Lotko W, Górski K., Stobiecki J.

Autobusy : technika, eksploatacja, systemy transportowe

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2018

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R. 19, nr 12

411--414

PL

Artykuł przedstawia wyniki oceny procesu przyspieszania wału korbowego silnika o zapłonie samoczynnym zasilanego mieszaninami oleju napędowego (ON) i eteru dietylowego (DEE). W szczególności badano mieszaniny zawierające 5, 10, 15 i 20 % objętościowo DEE w ON. Uzyskane rezultaty badań potwierdziły negatywny wpływ DEE dodawanego do ON na proces przyspieszania silnika AD3.152. Należy jednak zauważyć, że badania wykonano dla nominalnej regulacji aparatury wtryskowej tego silnika. Oznacza to, że nie były optymalne dla badanych mieszanin o odmiennych właściwościach fizykochemicznych w stosunku do ON.

EN

The paper presents results of the crankshaft acceleration process of the diesel engine fuelled with diesel oil - diethyl ether blends. In particular mixtures of diesel fuel with addition of 5, 10, 15 and 20 % by volume were tested. Results confirmed that DEE addition has negative impact on acceleration process of the AD3.152 engine. However it should be pointed that tests were carried out for nominal settings of the engine fuel injection system. It means that these settings were not optimal for tested blends with different physicochemical properties compared to regular diesel fuel.

2

Hydrous Methanol Fuelled HCCI Engine Using Ignition Improver CAI Method - ANN Approach

Venkatesan M., Moorthi N. S. V., Franco P. A., Manivannan A., Karthikeyan R.

Mechanics and Mechanical Engineering

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2015

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Vol. 19, nr 1

31--49

EN

The present study is to examine the performance and emission characteristics of a Homogeneous Charge Compression Ignition (HCCI) engine where hydrous methanol (85% methanol and 15% water) is used as primary fuel and Diethyl ether (DEE) as an ignition improver. A modified diesel engine has been used as a HCCI engine. By measuring the excess air ratio (λDEE), the quantity of DEE flow rate is measured and excess air ratio (fiDEE) is varied from fiDEE5.6 to fiDEE 9.5. Experimental results reveal that HCCI engine gives better brake thermal efficiency (BTE) at high loads (λDEE 9.5). It shows decrease in oxides of nitrogen (NOx) emission, slightly high emission of carbon monoxide (CO) and unburned hydrocarbon (HC) compared to conventional compression ignition (CI) engine. Radial basis function neural network (RBFN) model has been developed with brake power, excess air ratio and energy share as input and BTE, CO, HC, NOx, rate of pressure rise as output. About 80% of total experimental data is used for training purposes, and 20% is used for testing. The performance of the developed RBFN model were compared with experimental data, and were statistically evaluated which was found to be in good agreement.

3

Biopaliwa do silników o zapłonie samoczynnym

Lotko W., Górski K.

Logistyka

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2011

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nr 6

PL

W artykule dokonano przeglądu różnych biopaliw, które można stosować do zasilania silników o zapłonie samoczynnym. Szczególną uwagę poświęcono olejom pochodzenia roślinnego, a także wybranym eterom i alkoholom. Pokazano zarówno wybrane korzyści jak i zagrożenia wynikające z ich zastosowania na cele paliwowe. W pracy wykorzystano wyniki wieloletnich badań, prowadzonych w Instytucie Eksploatacji Pojazdów i Maszyn Politechniki Radomskiej, w zakresie zastosowania paliw alternatywnych do zasilania silników o zapłonie samoczynnym.

EN

In this paper, a review of different biofuels for powering of a diesel engines have been presented. Particular attention has been focused on plant oils, as well as selected ethers and alcohols. Selected benefits and disadvantages of their use as engine fuels have been presented. In this work the results and experiences of research carried out by Institute of Maintenance of Vehicles and Machines at the Technical University of Radom have been used.

4

Tyre pyrolysis oil fueled dual fuel diesel engine

Hariharan S., Murugan S., Nagarajan G.

Silniki Spalinowe

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2007

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R. 46, nr SC3

31-38

EN

Studies report that Tyre Pyrolysis Oil (TPO) derived from waste automobile tyres through Pyrolysis has similar properties to that of diesel fuel. However the cetane number of Tyre Pyrolysis Oil is lesser than diesel. Early investigations reveal that TPO blended with diesel could be used as an alternate fuel for diesel engines. The maximum TPO diesel blend concentration was 70% and the engine failed to operate satisfactorily beyond this concentration. This may be due to the inferior cetane number of TPO as compared to Diesel. The NOx and smoke were high in diesel engine while running with TPO diesel blends. The main aim of the present work is to assess the effect of using DEE in a diesel engine running on TPO, Small quantities of DEE were inducted along with air in the suction manifold and TPO was injected into the combustion chamber of a single cylinder air cooled diesel engine. The performance and emission characteristics are reported in this paper.