Experimental investigations on combustion, performance, and emission characteristics of stationary CI engine fueled with diesel–methanol and biodiesel–methanol blends

Jamrozik, Arkadiusz; Tutak, Wojciech; Pyrc, Michał; Sobiepański, Michał

doi:10.1002/ep.12541

Cited by 25 publications

(19 citation statements)

References 23 publications

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“…The exergy analysis showed a 25.64% increase in exergetic efficiency [20]. Other researchers conducted similar studies [14,21,22]. They also confirmed that ethanol causes increase in engine efficiency.Co-combustion of ethanol with diesel fuel, as shown in the cited articles, has many advantages.…”

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confidence: 52%

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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: 52%

“…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.…”

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confidence: 99%

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

Tutak

Jamrozik

2019

Processes

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“…Also, the blends are not stable and separate in the presence of trace amounts of water. In such a power system can not change the ratio of diesel /alcohol [4][5][6][7][8][9][10]. The co-combustion of fuels blends is interesting as well.…”

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confidence: 99%

“…The co-combustion of fuels blends is interesting as well. In papers [4][5][6][7][8][9][10] are presented results of the investigation of co-combustion of alcohol fuels with diesel or biodiesel fuels. It was stated that the combustion process in the dual fuel engine fueled with diesel and alcohol fuels has different pattern compared to combustion in the conventional compression ignition engine.…”

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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Effects of intake and exhaust valve timing on the performance of an air‐powered rotary engine

Pan

Chen

Yang

et al. 2017

Env Prog and Sustain Energy

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This work is aimed at improving the performance of the air‐powered rotary engine. A dynamic simulation model which includes an eccentric motion and rotary valve movement was established by our particle image velocimetry (PIV) experimental data. Then the power and specific steam consumption (SSC) was evaluated. The pressure distribution in the chamber was obtained which was difficult to obtain through experiment. Simulation results showed that for the work process and pressure distribution, the intake valve timing mainly affected the intake expansion stage (A2) and pure expansion stage (B). Due to this, a relatively low pressure was distributed in the middle of the chamber and this was beneficial to the intake and work processes. The exhaust valve timing mainly affected the exhaust stage (C) and initial intake stage (A1). Therefore, a relatively high pressure which was distributed in the middle‐rear of the chamber was beneficial to the exhaust processes. For the power and SSC, the power increased initially then decreased and the SSC decreased with the increase of intake advance angle respectively. Both the power and the SSC increased with the increase of intake duration angle. The power increased while the SSC decreased with the increase of exhaust advance angle. The power increased and the SSC decreased initially then increased with the increase of exhaust duration angle. The preferred parameters were found to be 30° CA, 240° CA, 30° CA, and 280° CA. These improved parameters had a 2.7% increase in the power and also a 2.4% decrease in the SSC. © 2017 American Institute of Chemical Engineers Environ Prog, 37: 1462–1474, 2018

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Experimental investigations on combustion, performance, and emission characteristics of stationary CI engine fueled with diesel–methanol and biodiesel–methanol blends

Cited by 25 publications

References 23 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

Effects of intake and exhaust valve timing on the performance of an air‐powered rotary engine

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