Investigation of fumigation of ethanol and exhaust gas recirculation on combustion and emission characteristics of partially premixed charge compression-ignition engine

Pandey, Shyam S.; Bhurat, Swapnil Sureshchandra; Kunwer, Ram

doi:10.1080/15567036.2020.1868625

Cited by 4 publications

(6 citation statements)

References 40 publications

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“…Numerous investigators used lower‐order alcohols having less than four carbon atoms as a supplementary fuel in various ratios in the inlet port 26,27 . Similar outcomes were seen when ethanol was inducted at a share of 15% through the inlet port alongside EGR at a level of 10% and 20% 28 . Nevertheless, the incorporation of EGR elevated the soot and smoke opacity because the low in‐cylinder temperature has an impact on the rate of oxidation 28,29 .…”

Section: Introductionmentioning

confidence: 85%

“…26,27 Similar outcomes were seen when ethanol was inducted at a share of 15% through the inlet port alongside EGR at a level of 10% and 20%. 28 Nevertheless, the incorporation of EGR elevated the soot and smoke opacity because the low in-cylinder temperature has an impact on the rate of oxidation. 28,29 In addition, the portion of the pilot injection was enhanced to reduce the CO and HC in the dual-fuel combustion approach.…”

Section: Introductionmentioning

confidence: 99%

“…28 Nevertheless, the incorporation of EGR elevated the soot and smoke opacity because the low in-cylinder temperature has an impact on the rate of oxidation. 28,29 In addition, the portion of the pilot injection was enhanced to reduce the CO and HC in the dual-fuel combustion approach. 30 The main drawbacks of using lower order alcohols, however, include aninferior cetane number, a lesser flash point, and fire points that affect neater combustion.…”

Section: Introductionmentioning

confidence: 99%

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Optimization of port injection of n‐decanol in a PCCI engine using response surface methodology

Vinodkumar¹,

Karthikeyan

Jayaprabakar

et al. 2023

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This work aims to define the optimum n‐decanol fraction in the inlet port and the corresponding engine load for the better emissions and performance characteristics of a partially premixed charged compression ignition (PCCI) engine by response surface methodology (RSM). The numerical model based on multi‐linear regression was established using experimental data. For this, the influence of various proportions of n‐decanol through intake port including 10%, 20%, 30%, and 40% were experimentally investigated besides the primary injection of neem oil biodiesel in the volumetric ratio of 80% diesel and 20% neem biodiesel, namely NB20. The optimization using RSM is exploited to capitalize the brake thermal efficiency (BTE) and diminish the emissions including oxides of nitrogen (NOx), carbon monoxide (CO) emission, smoke opacity, and hydrocarbon (HC) emission. The n‐decanol fraction in the port injection of 31.43% and the engine load in terms of brake power of 2.950 kW were found to be optimum parameters with the maximum desirability of 0.752. The optimal responses for brake‐specific fuel consumption (BSFC), BTE, CO, HC, smoke, and NOx under these operating conditions were found to be 0.305 kg/kWh, 28.8%, 0.145%, 19.61%, 54.85 ppm, and 837.7 ppm, respectively. Likewise, the correlation coefficient R2 values for BSFC, BTE, CO, HC, smoke and NOx have been found to be 99.85%, 99.95%, 93.58%, 90.32%, 99.97%, and 99.93%, respectively. According to the study's findings, the RSM is a realistic method for calculating and enhancing a diesel engine's emission and performance values operating in PCCI mode and using n‐decanol and NB20 as fuels.

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Section: Introductionmentioning

confidence: 85%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimization of port injection of n‐decanol in a PCCI engine using response surface methodology

Vinodkumar¹,

Karthikeyan

Jayaprabakar

et al. 2023

Heat Trans

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“…PCCI combustion is an intermediate strategy between HCCI and traditional CI, where only part of fuel used to provide the homogeneous A/F mixture, but the mixture is not fully homogeneous like HCCI [47,48]. PCCI strategy compared to HCCI strategy produces higher NOx emission but has lower HC and CO emissions additionally the in-cylinder conditions can be controlled by the amount of the premixed fuel and the timing of the main injection fuel [49,50]. So PCCI combustion is a promising strategy that provides the advantages of both CI and SI modes as PCCI produces lower NOx, CO, HC, and soot while keep same BTE compared to conventional mode [51].…”

Section: Ltc Technology Includes Various Modes Like Homogeneous Charg...mentioning

confidence: 99%

Experimental Investigation of the Biodiesel Direct Injection and Diesel Fuel as Premixed Charge on CI-Engine Emissions, Performance, and Combustion Characteristics

Elkelawy

Bastawissi²,

elhamid³

et al. 2023

Journal of Engineering Research

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This study aims to investigate the use of waste cooking oil biodiesel blend (B30D70) in CDC mode and the use of different premixing ratios of diesel vapor (15%, 20%, 25% and 30%) through manifold injection at a manifold premixed temperature of 110 ⁰ C in PCCI mode when using biodiesel blend (B30D70) as the main fuel and diesel as the premixed fuel. The experiments were carried out on 4-stroke, single-cylinder, air cooled, DI diesel engine which was modified to run in PCCI mode with adding a fuel vaporizer to create the external homogeneous mixture. The engine combustion parameters, performance, and emissions characteristics were fully discussed, and the results were compared with these of CDC mode fueled by diesel. The obtained results for the use of B30D70 fuel indicates a certain decrement for exhaust gas temperature, HC, and CO emissions, but with a penalty in brake thermal efficiency, NOx, and smoke opacity. The experiments revealed that the best results were indicated for 20% diesel vapor in PCCI mode as CO, HC, NOx, and EGT reduced by 34.62%, 43.75%, 2.65% and 8.53% respectively and almost has the same BTE compared to CDC mode fueled by diesel. While increasing PR to 25% and 30% decrease the volumetric efficiency leads to rich mixture and deterioration of combustion and increase CO, HC and smoke emissions.

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“…The injection timing = 20• BTDC with EGR was the optimum injection timing that gave simultaneously low soot and NOx emissions, due to the better fuel-air mixing as the spray struck the piston bowl wall at an optimum targeting spot. The effects of fumigated ethanol and EGR on PCCI performance combustion and emissions characteristics were studied also by [33] and compared with pure diesel combustion. The engine was operated with different combinations of ethanol, diesel, and EGR at different loads.…”

Section: Premixed Charge Compression Ignition (Pcci)mentioning

confidence: 99%

A critical review of the performance, combustion, and emissions characteristics of PCCI engine controlled by injection strategy and fuel properties

Elkelawy

Bastawissi

elhamid

et al. 2022

Journal of Engineering Research

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As internal combustion engines (ICEs) produce serious emissions and a big part of greenhouse gases from fuel combustion. Due to the universal concerns about degradation in the ambient environment, limitations on exhaust emissions, depletion of petroleum reserves, and global warming, many strict regulations have been launched on the standard emissions released from engines. These challenges oblige engine researchers worldwide to develop a new strategic balance between engine performance and emissions. Premixed charge compression ignition (PCCI) is a promising technique to overcome these challenges in recent years which can simultaneously reduce NOx and soot emissions and substantially improve thermal efficiency. The PCCI combustion concept has the advantages of both SI and CI engines, like SI engines as the charge is premixed which produces low emissions and like CI engines the fuel-air mixture is auto-ignited as a result of compression which leads to high thermal efficiency. Normally, PCCI combustion is a single-stage combustion process achieved by employing early injection timing to increase the time available for mixing fuel and air by using single-fuel and split fuel (pilot/main) injection tactics, in which a large fraction of fuel burns in premixed combustion phase resulting in relatively lower in-cylinder temperatures compared to compression ignition (CI) combustion. Thus, the objective of this paper is to provide an inclusive review of the effects of fuel injection timings, ratios, pressure, and fuel properties on the PCCI engine combustion performance improvement and emission reduction, this review has been analyzed extensively based on the published studies to provide and discuss different strategies for the control of PCCI technique of combustion at a wide range of speed and load.

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Investigation of fumigation of ethanol and exhaust gas recirculation on combustion and emission characteristics of partially premixed charge compression-ignition engine

Cited by 4 publications

References 40 publications

Optimization of port injection of n‐decanol in a PCCI engine using response surface methodology

Optimization of port injection of n‐decanol in a PCCI engine using response surface methodology

Experimental Investigation of the Biodiesel Direct Injection and Diesel Fuel as Premixed Charge on CI-Engine Emissions, Performance, and Combustion Characteristics

A critical review of the performance, combustion, and emissions characteristics of PCCI engine controlled by injection strategy and fuel properties

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