Use of the constant volume combustion chamber to examine the properties of autoignition and derived cetane number of mixtures of diesel fuel and ethanol

Kuszewski, Hubert; Jaworski, Artur J.; Ustrzycki, A.; Lejda, Kazimierz; Balawender, Krzysztof; Woś, P.

doi:10.1016/j.fuel.2017.04.021

Cited by 45 publications

(33 citation statements)

References 28 publications

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“…Ethanol greatly affects the combustion stage. This is confirmed by the result of basic research carried out using specialized combustion chambers [15][16][17][18]. The authors of research papers using piston engines came to similar conclusions with basic research [9,11,19].…”

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confidence: 65%

Comparative Analysis of Combustion Stability of Diesel/Ethanol Utilization by Blend and Dual Fuel

Tutak

Jamrozik

2019

Processes

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The aim of the work is a comparison of two combustion systems of fuels with different reactivity. The first is combustion of the fuel mixture and the second is combustion in a dual-fuel engine. Diesel fuel was burned with pure ethanol. Both methods of co-firing fuels have both advantages and disadvantages. Attention was paid to the combustion stability aspect determined by COV IMEP as well as the probability density function of IMEP. It was analyzed also the spread of the maximum pressure value, the angle of the position of maximum pressure. The influence of ethanol on ignition delay time spread and end of combustion process was evaluated. The experimental investigation was conducted on 1-cylinder air cooled compression ignition engine. The test engine operated with constant rpm equal to 1500 rpm and constant angle of start of diesel fuel injection. The engine was operated with ethanol up to 50% of its energy fraction.Processes 2019, 7, 946 2 of 10 opportunities to use alcohol-based fuels in compression ignition engines. In the works devoted to the combustion of fuels in the form of blends or dual fuel mode, reference is made to operating parameters of engine and emission standards fulfillment. Lee et al. presented results of investigation of a heavy-duty single-cylinder diesel engine with two direct injectors. Engine speed was fixed at 1000 rpm and the load condition varied for an indicated mean effective pressure ranging from 0.2 to 0.8 MPa. The ratio of ethanol to the total input energy was controlled from zero to nearly 50% of the input energy. The NO x and PM emissions decreased with increasing ethanol substitution and the mean size of the PM emissions decreased. For the mid-load condition, the substitution was increased to 63%; however, for low and high loads, higher ethanol fractions could not be used because of insufficient ignition energy at low loads and high values of pressure rise under high loads [7]. Similar results were obtained by other authors; all of them showed that the share of ethanol has a positive effect on soot emissions, while there are different opinions regarding NO x emissions [8][9][10][11]. On the one hand, ethanol reduces the temperature on the compressed load due to the high heat of vaporization. On the other hand, it increases the value of the maximum pressure and, consequently, the combustion temperature, contains additional oxygen in the structure, it promotes the formation of NO x [12][13][14]. Ethanol greatly affects the combustion stage. This is confirmed by the result of basic research carried out using specialized combustion chambers [15][16][17][18]. The authors of research papers using piston engines came to similar conclusions with basic research [9,11,19]. In the paper of Paul et al., regarding the investigation of blend combustion, authors presented results of investigation of diesel-ethanol combustion process in diesel engine. Ethanol percentage was increased from 5% to 20% with intervals of 5%, thus reducing the diesel participation. Paul et al. stated that a blend w...

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confidence: 65%

Comparative Analysis of Combustion Stability of Diesel/Ethanol Utilization by Blend and Dual Fuel

Tutak

Jamrozik

2019

Processes

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“…The ignition process is controlled by the injected dose of diesel fuel. This requires the addition of injector, along with a separate fuel tank, lines and controls [12]. Some advantages of dual fuel technology: some part of the fuel energy can be derived from non-fossil fuel, flexibility of power system -the engine can switch from dual-fuel to diesel fuel operation.…”

Section: Introductionmentioning

confidence: 99%

“…Some advantages of dual fuel technology: some part of the fuel energy can be derived from non-fossil fuel, flexibility of power system -the engine can switch from dual-fuel to diesel fuel operation. Co-combustion of alcohols with diesel fuel can reduce smoke emission [12]. With increase in alcohol participation the peak combustion temperature decreases as well as the temperature of the mixture at the end of the compression stroke (preignition temperature).…”

Section: Introductionmentioning

confidence: 99%

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Combustion of different reactivity fuel mixture in a dual fuel engine

Tutak¹,

Jamrozik²,

Gnatowska³

2018

THERM SCI

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The paper presents results of experimental investigation of co-combustion of fuels of various reactivity at dual fuel Diesel engine. The tested fuels were ethanol fuel (EF) and diesel. It was used one-cylinder direct injection Diesel engine. Researches were conducted at constant rotational speed and constant injection timing. With the increase in EF fraction the deterioration of combustion process was indicated. On the basis of heat release variation were determined combustion phases: ignition delay, combustion duration. With the increase in EF participation in combustion processes the IMEP increased as well. There was no noticeable effect of ethanol on unrepeatability of indicated mean effective pressure. The increase in EF fraction causes the specific NO x emission decreases but specific total hydrocarbon emission increased.

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“…Constant volume combustion chambers (CVCC) are typically used in order to investigate fundamental aspects of combustion phenomena such as premixed ignition [1][2], diffusion flames, laminar flame speed [3], turbulent flame speed, autoignition [4][5], injection strategies [6][7][8], and emissions formation [9]. In this study, a small test stand is placed at the bottom of the cylindrical CVCC for conducting materials synthesis experiments, initially focused on the creation of paper-templated metals.…”

Section: Introductionmentioning

confidence: 99%

Development of a Constant Volume Combustion Chamber for Material Synthesis

Morovatiyan¹,

Shahsavan²,

Mack³

2018

Preprint

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A constant volume combustion chamber (CVCC) was constructed to enable material synthesis procedures that are sensitive to temperature, pressure, and ambient species concentrations. Material synthesis processes require specific operating conditions in order to carry out the desired chemical reactions and property transformations, including the creation of paper-templated metals and nanoparticles. The 1.13 liter combustion chamber includes a test stand for conducting the material synthesis experiments. A premixed fuel-air mixture is ignited at a desired equivalence ratio in order to produce the required synthesis conditions. In comparison to furnaces and ovens, this approach provides greater flexibility for materials synthesis procedures. Computational modeling using adaptive mesh refinement, alongside preliminary experimental testing results, confirms that the CVCC can provide the appropriate conditions to synthesize paper-templated metals. The approach demonstrates that the CVCC can be a viable alternative to a furnace for use in materials synthesis applications.

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Use of the constant volume combustion chamber to examine the properties of autoignition and derived cetane number of mixtures of diesel fuel and ethanol

Cited by 45 publications

References 28 publications

Comparative Analysis of Combustion Stability of Diesel/Ethanol Utilization by Blend and Dual Fuel

Comparative Analysis of Combustion Stability of Diesel/Ethanol Utilization by Blend and Dual Fuel

Combustion of different reactivity fuel mixture in a dual fuel engine

Development of a Constant Volume Combustion Chamber for Material Synthesis

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