Application of an enhanced Taguchi method for simultaneous reduction of smoke and NOx emissions using oxygenated additives and retarded injection timing in a stationary diesel engine

Saravanan, S.; Kumar, B. Rajesh

doi:10.1007/s40430-015-0361-1

Cited by 4 publications

(2 citation statements)

References 29 publications

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“…26 Methods like EGR, retarded injection timing and using low energy alcohols as blend components affect engine performance. 27 Hence there is a necessity to obtain an optimal combination of injection timing, EGR and the fuel type to achieve a desired emission and performance targets.…”

Section: -20 Howevermentioning

confidence: 99%

A comparative evaluation and optimization of performance and emission characteristics of a DI diesel engine fueled with n-propanol/diesel, n-butanol/diesel and n-pentanol/diesel blends using response surface methodology

Kumar¹,

Muthukkumar

Krishnamoorthy³

et al. 2016

RSC Adv.

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High carbon bio-alcohols have recently grabbed the attention of diesel engine researchers because of higher energy density, higher cetane number and better blend stability than their low carbon counterparts. This study utilizes three high carbon bio-alcohol/diesel blends prepared by mixing 40% by vol. of n -propanol, n -butanol and n -pentanol individually with fossil diesel in a DI diesel engine. Engine performance and emission characteristics were measured under high-load condition based on a 3 3 full-factorial experimental design matrix using exhaust gas recirculation (EGR) rate, injection-timing and alcohol type used in the blends as factors for controlling charge-dilution and combustion-phasing. A statistical investigation was then carried out to compare and analyze the effects of these factors on all measured responses like nitrogen oxides (NOx), smoke, hydrocarbons (HC), carbon monoxide (CO), brake thermal efficiency (BTE) and brake specific fuel consumption (BSFC). Multiple regression models were developed for all responses using response surface methodology (RSM) and were found to be statistically significant at 99% confidence levels. Interactive effects between injection timing and EGR for all blends were compared and analyzed through response surface plots fitted using developed models with high R 2 values. Optimization was performed using desirability approach with an objective to minimize NOx, smoke and BSFC with maximum BTE. n-Propanol/diesel blend injected at 25° CA bTDC under 30% EGR with a desirability of 0.965 was predicted to be optimum for this engine. Similarly n-butanol/diesel and n-pentanol/diesel blends injected at 24°CA bTDC under 10% EGR were found to be optimum in their respective category. Confirmatory tests validated that the developed RSM models were adequate to describe the effects of injection timing and EGR on the engine characteristics as the predicted error is within 5%.

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Section: -20 Howevermentioning

confidence: 99%

A comparative evaluation and optimization of performance and emission characteristics of a DI diesel engine fueled with n-propanol/diesel, n-butanol/diesel and n-pentanol/diesel blends using response surface methodology

Kumar¹,

Muthukkumar

Krishnamoorthy³

et al. 2016

RSC Adv.

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“…Alcohol-type molecules that contain the O radical such as dimethyl ether (DME) and diethyl ether (DEE) have been suggested as substitutes [1] or at least additives to regular gasoline or diesel to improve combustion efficiency [2,3]. DME, CH 3 OCH 3 , is an isomer of ethanol (C 2 H 5 OH), which is widely 5 Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and experimental study on scattering of low-energy electrons by dimethyl and diethyl ethers

Tatreau

Hlousek

Zawadzki

et al. 2020

J. Phys. B: At. Mol. Opt. Phys.

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We report a joint theoretical and experimental investigation on low-energy electron scattering by dimethyl and diethyl ethers. The experimental elastic differential cross sections were measured at impact energies from 1 eV up to 30 eV and scattering angle range of 10° to 130°. Theoretical elastic differential, integral and momentum-transfer cross sections are calculated at impact energies up to 30 eV, employing the Schwinger multichannel method implemented with norm-conserving pseudopotentials, in the static-exchange and static-exchange plus polarization approximations. Our experimental and theoretical results for dimethyl and diethyl ether are compared with previous data for their isomers, ethanol and butanol, respectively. These comparisons reveal that although the cross sections for the ether and its respective alcohol present similar magnitudes, the angular behavior of their differential cross sections shows some significant differences. From the analysis of the integral cross sections for electron scattering by dimethyl and diethyl ether, we observe a broad structure, at around 9.5 eV, which we assign as the overlap of several resonant structures.

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Screening oxygenates for favorable NOx/smoke trade-off in a DI diesel engine using multi response optimization

Kumar

Saravanan

Sethuramasamyraja

et al. 2017

Fuel

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Application of an enhanced Taguchi method for simultaneous reduction of smoke and NOx emissions using oxygenated additives and retarded injection timing in a stationary diesel engine

Cited by 4 publications

References 29 publications

A comparative evaluation and optimization of performance and emission characteristics of a DI diesel engine fueled with n-propanol/diesel, n-butanol/diesel and n-pentanol/diesel blends using response surface methodology

A comparative evaluation and optimization of performance and emission characteristics of a DI diesel engine fueled with n-propanol/diesel, n-butanol/diesel and n-pentanol/diesel blends using response surface methodology

Theoretical and experimental study on scattering of low-energy electrons by dimethyl and diethyl ethers

Screening oxygenates for favorable NOx/smoke trade-off in a DI diesel engine using multi response optimization

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