Combustion, performance and emission characteristics of various alcohol blends in a single cylinder diesel engine

Emiroğlu, A. Osman; Şen, Mehmet Umut

doi:10.1016/j.fuel.2017.10.016

Cited by 184 publications

(68 citation statements)

References 47 publications

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“…In addition, it was observed that an increase in engine load causes a reduction in the BSFC (Brake-specific fuel consumption) value because the combustion process is more efficient with higher loads. Similar results were reported in the investigations of Ozener et al [45], and Emiroglu anḑ Sen [46].…”

Section: Co and Co2 Emissionssupporting

confidence: 91%

Combustion and Performance Study of Low-Displacement Compression Ignition Engines Operating with Diesel–Biodiesel Blends

2020

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This study investigated the influence of different biodiesel blends produced from residual sunflower oil and palm oil from agroindustry liquid waste on the characteristics of the combustion process, performance, and emissions in a single-cylinder diesel engine. For the analysis of the combustion process, a diagnostic model was developed based on the cylinder pressure signal, which allows the calculation of the heat release rate, the accumulated heat rate, and the temperature in the combustion chamber. This is to assess the influence of these parameters on engine emissions. The experiments on the diesel engine were carried out using five types of fuel: conventional diesel, two biodiesel blends of residual palm oil (PB5 and PB10), and two biodiesel blends formed with palm oil and sunflower oil residues (PB5SB5 and PB10SB5). The engine was running in four different modes, which covered its entire operating area. Experimental results show that the in-cylinder pressure curves decrease as the percentage of biodiesel in the fuel increases. Similarly, the results showed a decrease in the heat release rate for biodiesel blends. The diagrams of the accumulated heat release curves were larger for fuels with higher biodiesel content. This effect is reflected in the thermal efficiency of biodiesel blends since the maximum thermal efficiencies were 29.4%, 30%, 30.6%, 31.2%, and 31.8% for PB10SB5, PB5SB5, PB10, PB5, and diesel, respectively. The emission analysis showed that the blends of biodiesel PB5SB5 and PB10SB allowed a greater reduction in the emissions of CO, CO2, HC, and opacity of smoke in all the modes of operation tested, in comparison with the blends of biodiesel PB5 and PB10. However, NOx emissions increased. In general, biodiesel with the percentage of residual sunflower oil does not cause a significant change in the combustion process and engine performance, when compared to biodiesel that includes only residual palm oil.

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Section: Co and Co2 Emissionssupporting

confidence: 91%

Combustion and Performance Study of Low-Displacement Compression Ignition Engines Operating with Diesel–Biodiesel Blends

2020

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“…As a response to the high demand for environmental security, more attention is being paid to utilising fuels with lower emissions and optimising combustion processes [1][2][3][4][5][6][7][8]. Optimising the combustion process in compression ignition (CI) engines has been employed in the current study because this can reduce fuel consumption and pollutants [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Injector Hole Diameter on Spray Behaviour for Butanol-Diesel Blends

2018

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Optimising the combustion process in compression ignition (CI) engines is of interest in current research as a potential means to reduce fuel consumption and emission levels. Combustion optimisation can be achieved as a result of understanding the relationship between spraying technique and combustion characteristics. Understanding macroscopic characteristics of spray is an important step in predicting combustion behaviour. This study investigates the impact of injector hole diameter on macroscopic spray characteristics (spray penetration, spray cone angle, and spray volume) of butanol-diesel blends. In the current study, a Bosch (0.18 mm diameter) and a Delphi (0.198 mm) injector were used. Spray tests were carried out in a constant volume vessel (CVV) under different injection conditions. The test blends were injected using a solenoid injector with a common rail injection system and images captured using a high-speed camera. The experimental results showed that the spray penetration (S) was increased with larger hole diameter. Spray penetration of a 20% butanol-80% diesel blend was slightly further than that of neat diesel. Spray penetration of all test fuels was increased as a result of increased injection pressure (IP), while spray cone angle (θ) was slightly widened due to the increase in either hole diameter or injection pressure. Spray volume of all test fuels was increased as a result of increased hole diameter or injection pressure. Thus, an efficient diesel engine performance can be achieved as a result of controlling injection characteristics, especially when using a promising additive like butanol blended with diesel.

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“…The formation of smoke depends on the engine condition, combustion chamber type and the physic-chemical properties of the fuel and occurs at the oxygen deficiency in the cylinder [19]. Oxygen deficiency is locally visible in the combustion chamber and increases with decreasing air/fuel ratio.…”

Section: Smoke Opacitymentioning

confidence: 99%

Experimental Examination of Performance, Exhaust Emission and Combustion Behaviours of A Ci Engine Fuelled With Biodiesel/Diesel Fuel Blends

Emiroğlu¹

2018

Sakarya University Journal of Science

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The main objective of this study is to evaluate the effect on diesel engine performance, exhaust emission and combustion characteristics of canola oil biodiesel. The biodiesel was blended with petroleum-based diesel fuel (DF) by 10% (B10), 20% (B20) and 50% (B50) volumetrically. Engine tests were carried out on a direct injection, single-cylinder, compression ignition engine at different engine loads and the results were compared with the reference DF. The results showed that the maximum cylinder pressure and heat release rate values of DF were higher than those of the biodiesel blends at all engine loads. The addition of biodiesel to DF increased the brake specific fuel consumption (BSFC) and decreased the brake thermal efficiency (BTE) at all engine loads. In addition, biodiesel blends caused a slight increase in nitrogen oxide (NOx) emissions while causing a decrease in smoke opacity and carbon monoxide (CO) emissions.

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Combustion, performance and emission characteristics of various alcohol blends in a single cylinder diesel engine

Cited by 184 publications

References 47 publications

Combustion and Performance Study of Low-Displacement Compression Ignition Engines Operating with Diesel–Biodiesel Blends

Combustion and Performance Study of Low-Displacement Compression Ignition Engines Operating with Diesel–Biodiesel Blends

The Impact of Injector Hole Diameter on Spray Behaviour for Butanol-Diesel Blends

Experimental Examination of Performance, Exhaust Emission and Combustion Behaviours of A Ci Engine Fuelled With Biodiesel/Diesel Fuel Blends

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