Experimental studies on the impact of part-cooled high-pressure loop EGR on the combustion and emission characteristics of liquefied petroleum gas

Oommen, Libin P.; Kumar, Girish

doi:10.1007/s10973-020-09762-0

Cited by 8 publications

(2 citation statements)

References 20 publications

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“…e addition of exhaust gas recirculation in the CO 2 emission at 60% of load conditions is shown in Figure 14. When adopting the EGR rate of 10% and 20% of load, the carbon dioxide is decreased when a higher alcohol concentration is used in the diesel engine [34][35][36]. e partial mixture of burnt gases into fresh air a ects the postcombustion temperature due to the high speci c heat capacity (SHC) exhaust gas a ects the combustion reaction.…”

Section: Comentioning

confidence: 99%

Assessment on Performance and Emission Characteristics of the CRDI Engine Fueled with Ethanol/Diesel Blends in Addition to EGR

Dineshkumar

Jeyakumar

Pandian

et al. 2022

International Journal of Chemical Engineering

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In this research, the CRDI engine characteristics were analyzed with the aid of exhaust gas recirculation rate (EGR) adoption fueled with ethanol blends. The test fuels were the various blends with ethanol, such as (10% of ethanol + 90% of diesel) E10D90 (20% of ethanol + 80% of diesel), E20D80, and (30% of ethanol + 70% of diesel) E30D70. From the results, it was revealed that performance characteristics were reduced when using a higher concentration of the alcohols mixed with diesel fuel. The blend E30D70 showed that brake thermal efficiency (BTE) without EGR drops by 3.8%, increased by 9.14% of BSFC, a 9.25% decrease in oxides of nitrogen emissions, and slightly decreased CO and HC emissions compared to baseline diesel operation at 60% load condition. The blend E10D90 with 20% EGR shows the highest BTE of 8.87% when compared with base fuel, due to proper fuel mixture taking place in the inlet manifold. The results indicate that the engine runs smoothly, and E30D70 has chosen an optimum blend. A further experiment was performed using E30D70 with different rates of exhaust gas recirculation system. The addition of exhaust gas recirculation with E30D70 in the common rail diesel engine exhibits oxides of nitrogen emission, but in contrast, it was noticed to have inferior performance characteristics and drastically decreased HC and CO emissions. The hydrocarbon emission decreased E10D90, E20D80, and E30D70 at 60% load condition by 21.42%, 37.38%, and 48.76%, respectively. The blends E10D90, E20D80, and E30D70 decreased carbon dioxide by 7.9%, 30.08%, and 31.98%, respectively. The maximum reduction of NOx emission was observed at about 51.06% at an EGR rate of 20% with E30D70.

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Section: Comentioning

confidence: 99%

Assessment on Performance and Emission Characteristics of the CRDI Engine Fueled with Ethanol/Diesel Blends in Addition to EGR

Dineshkumar

Jeyakumar

Pandian

et al. 2022

International Journal of Chemical Engineering

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“…Tang et al 19 studied high-pressure EGR (HP EGR) and donor-cylinder EGR (DC-EGR), and conducted BSFC comprehensive optimization by adaptive particle swarm optimization; two EGR patterns are more inclined to achieve comprehensive optimization of BSFC under different loads. Oommen et al 20 studied part-cooled EGR applied in varying rates (12, 18, and 24%) in order to analyze the BSFC; the fuel consumption of the test engine was reduced up to 12.28% with the application of 18% of part-cooled EGR. In actual application, it is difficult to achieve the best design and calibration of EGR.…”

Section: Introductionmentioning

confidence: 99%

Effect of Exhaust Gas Recirculation Combined with Selective Catalytic Reduction on NO_x Emission Characteristics and Their Matching Optimization of a Heavy-Duty Diesel Engine

et al. 2022

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Exhaust gas recirculation (EGR) and selective catalytic reduction (SCR) have become important technologies to reduce the NO x emission of heavy-duty diesel engines and meet the increasingly stringent emission regulations. This paper studied the effect of EGR combined with SCR on the NO x emission characteristics of a heavy-duty diesel engine based on the engine bench test. The results showed that the NO reduction rate of EGR-coupled SCR increased with the increase of engine load, and the effect was no longer significant when the NO reduction rate exceeded a certain limit under the same working conditions. EGR combined with SCR has little effect on NO 2 emission reduction, and the increase of engine speed can significantly improve the efficiency of the NO 2 reduction rate at 75 and 100% load. 25% opening of the EGR valve (OEV) and 50% OEV have very similar effects on the NO x reduction rate when the engine speed is at a low level. Compared with low engine speeds, increased OEV or ammonia NO x molar ratio (ANR) had a more obvious effect on the NO x reduction rate at high engine speeds. SCR combined with low valve-opening EGR had a more significant effect on the NO x reduction rate. The increase of OEV led to the increase of fuel consumption rate, but the effect on the fuel consumption rate decreased gradually with the increase of diesel engine speed. Meanwhile, this study optimized the matching relationship between OEV and ANR based on the data of the genetic algorithm, which provides a theoretical research method and application basis for diesel engine-matching of EGR and SCR.

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Analysis of Cyclic Variations and Combustion Behavior of Liquid Phase Hydrocarbons Under Uniform Axial and Radial Magnetic Fields

Oommen¹,

Kumar

2022

Green Energy and Technology

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Experimental studies on the impact of part-cooled high-pressure loop EGR on the combustion and emission characteristics of liquefied petroleum gas

Cited by 8 publications

References 20 publications

Assessment on Performance and Emission Characteristics of the CRDI Engine Fueled with Ethanol/Diesel Blends in Addition to EGR

Assessment on Performance and Emission Characteristics of the CRDI Engine Fueled with Ethanol/Diesel Blends in Addition to EGR

Effect of Exhaust Gas Recirculation Combined with Selective Catalytic Reduction on NO_x Emission Characteristics and Their Matching Optimization of a Heavy-Duty Diesel Engine

Analysis of Cyclic Variations and Combustion Behavior of Liquid Phase Hydrocarbons Under Uniform Axial and Radial Magnetic Fields

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Experimental studies on the impact of part-cooled high-pressure loop EGR on the combustion and emission characteristics of liquefied petroleum gas

Cited by 8 publications

References 20 publications

Assessment on Performance and Emission Characteristics of the CRDI Engine Fueled with Ethanol/Diesel Blends in Addition to EGR

Assessment on Performance and Emission Characteristics of the CRDI Engine Fueled with Ethanol/Diesel Blends in Addition to EGR

Effect of Exhaust Gas Recirculation Combined with Selective Catalytic Reduction on NOx Emission Characteristics and Their Matching Optimization of a Heavy-Duty Diesel Engine

Analysis of Cyclic Variations and Combustion Behavior of Liquid Phase Hydrocarbons Under Uniform Axial and Radial Magnetic Fields

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Effect of Exhaust Gas Recirculation Combined with Selective Catalytic Reduction on NO_x Emission Characteristics and Their Matching Optimization of a Heavy-Duty Diesel Engine