Experimental Study of Oxygen-Enriched Diesel Combustion Using Simulated Exhaust Gas Recirculation

Perez, Peter L.; Boehman, André L.

doi:10.1115/1.3077647

Cited by 20 publications

(8 citation statements)

References 33 publications

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“…Perez et al used CO 2 instead of EGR to study the variation of NO-smoke in oxygen-enriched diesel engines. The results showed that the best NO-smoke trade-off relationship can be achieved with 23% O 2 –10% CO 2 , but the advantages of oxygen-enriched combustion in CO, HC, and BSFC were completely canceled out . In conclusion, the existing literature on the reduction of NO x and particle emissions from oxygen-enriched engines is focused on diesel engines, and both H 2 O and inert gas are difficult to achieve excellent results in terms of both power and emissions performance.…”

Section: Introductionmentioning

confidence: 93%

Effect of Exhaust Gas Recirculation and Spark Timing on Combustion and Emission Performance of an Oxygen-Enriched Gasoline Engine

Zhang

Guo

et al. 2022

ACS Omega

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Oxygen-enriched combustion (OEC) technology in SI engines can greatly improve the degree of constant volume combustion, increase the torque output, and reduce HC and CO emissions but lead to a sharp increase in NO x emissions. Simultaneously, the high temperature from OEC would lead to high nucleation particle emissions. Under the OEC mode, except the oxygen content, spark timing and engine load are important influencing factors on emissions. Exhaust gas recirculation (EGR) technology has been proven to reduce NO x emissions effectively. This research investigates the effects of EGR on combustion and emission performance under an oxygen-enriched ratio (OER) of 25% with five EGR ratios (0–20%) for the initial throttle opening of 14% (at an EGR ratio of 0%) with an engine speed of 1500 rpm. The study shows that when the OER is 25%, the output torque increases with the increase of the EGR ratio. At the proper spark timing, the EGR ratio over 15% can obtain lower NO x emissions and particle emissions than the baseline (OER of 21%). Although HC emissions increase with the EGR ratio, they are still lower than the baseline. Overall, the OER of 25% coupled with the EGR ratios of 15–20% is the predominant combustion mode to improve power and emission performance in SI engines.

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Section: Introductionmentioning

confidence: 93%

Effect of Exhaust Gas Recirculation and Spark Timing on Combustion and Emission Performance of an Oxygen-Enriched Gasoline Engine

Zhang

Guo

et al. 2022

ACS Omega

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“…There are some similar experimental studies. For example, Perez et al carried out an experimental study on diesel combustion using simulated recirculated exhaust gas [22]. They found that the addition of CO 2 reduced the average combustion temperature, and oxygen-enriched conditions improved the combustion process of internal combustion engines under O 2enriched conditions.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of O2-Enriched CO2 Production by BaCo0.8B0.2O3−δ (B=Ce, Al, Fe, Cu) Perovskites Sorbent for Marine Exhaust CO2 Capture Application

Shen

Shao

et al. 2021

JMSE

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An effective approach for reducing CO2 emissions from marine exhaust is adopting oxyfuel combustion technology. A series of B-site doped BaCo0.8B0.2O3−δ (B=Ce, Al, Fe, Cu) perovskites as novel oxygen carrier applications were prepared by the sol-gel method. The oxygen desorption characteristics of the B-site doped BaCo0.8B0.2O3−δ perovskites and the effects of adsorption/desorption temperature, CO2 volume flow rate, CO2 partial pressures, and adsorption time were researched in the fixed bed reactor. The surface morphology and size of the oxygen carrier was observed by scanning electron microscope (SEM). Results showed that BaCo0.8Al0.2O3−δ and BaCo0.8Ce0.2O3−δ have comparable performance, considering the cost of the raw materials. BaCo0.8Al0.2O3−δ was selected as candidate for further study. The optimal adsorption/desorption temperature, CO2 volume flow rate, CO2 partial pressure and adsorption time for BaCo0.8Al0.2O3−δ were studied in detail. Results showed that the best operating parameters were determined to be 850 °C/850 °C for adsorption/desorption temperature, 200 mL/min for CO2 volume flow rate, 100% CO2 partial pressure, and 30 min for absorption time, respectively. Furthermore, multiple cycle results indicate that BaCo0.8Al0.2O3−δ sorbent has high reactivity and cyclic stability.

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“…% with a quadratic function relationship between the flame velocities and the O 2 concentration . Compared with N 2 , the high concentration of CO 2 decreased the flame speeds and the measured flame speed using CO 2 as a diluent was about one-fifth of that using N 2 as a diluent. , From the open literature on the statistical analysis side, which merge the combustion technique along with the statistical analysis, Perez and Boehman investigated experimentally the oxygen-enriched diesel combustion using simulated exhaust gas recirculation. They measured the effect of exhaust gas recirculation on the particulate matter emissions and NOx emissions.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Swirl Number and Oxidizer Composition on Combustion Characteristics of Non-Premixed Methane Flames

Rashwan¹

2018

Energy Fuels

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This paper presents divergent phases of numerical investigations on non-premixed combustion flames. The study has been performed using the computational fluid dynamics software (CFD). In this study, the effect of swirl number and oxidizer composition on the combustion characteristics of air-methane combustion and comparison will be performed with respect to oxy-fuel combustion cases. The oxy-fuel combustion investigations were performed on three difference oxygen fractions, namely, 30, 40, and 50%, to investigate the effect of the oxidizer flexibility on combustion characteristics. Both investigations have been conducted under the non-premixed combustion model, and the flame is anchored over a swirl stabilizer. In this work, validation of a previous experimental work was successfully achieved and a grid independency study was performed. The axial and radial temperature distribution are analyzed and reported. The velocity stream lines and emission concentrations are also reported. Furthermore, the effect of swirl number on NOx emissions has been investigated for air-fuel combustion cases only because nitrogen is not allowed in the oxy-combustion cases. The study revealed that increasing swirl number can reduce the thermal NOx by 95% and this can be attributed to the increase in mixing levels of the combustible mixture.

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Experimental Study of Oxygen-Enriched Diesel Combustion Using Simulated Exhaust Gas Recirculation

Cited by 20 publications

References 33 publications

Effect of Exhaust Gas Recirculation and Spark Timing on Combustion and Emission Performance of an Oxygen-Enriched Gasoline Engine

Effect of Exhaust Gas Recirculation and Spark Timing on Combustion and Emission Performance of an Oxygen-Enriched Gasoline Engine

Experimental Study of O2-Enriched CO2 Production by BaCo0.8B0.2O3−δ (B=Ce, Al, Fe, Cu) Perovskites Sorbent for Marine Exhaust CO2 Capture Application

The Effect of Swirl Number and Oxidizer Composition on Combustion Characteristics of Non-Premixed Methane Flames

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