PM and NOX emissions amelioration from the combustion of diesel/ethanol-methanol blends applying exhaust gas recirculation (EGR)

Chaichan, Miqdam T.; Ekab, Noora S.; Fayad, Mohammed A.; Dhahad, Hayder A.

doi:10.1088/1755-1315/961/1/012044

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…The temperatures inside cylinder changed with applied EGR (Figure 4), especially at high engine loads. These results were in agreement with the results of Yogesh and Chandramohan, 2022; Chaichan et al, 2022and Chandravanshi et al, 2022 and Zhang (2018) explained that adding ethanol to diesel causes a decrease in the cetane number (especially in the case of the current study, where the cetane number of Iraqi diesel is basically low), which increases the ignition delay period, so the amount of fuel injected into the combustion chamber is increased during this period. As a result of all that, NOx concentrations are increased.…”

Section: Emission Characteristicssupporting

confidence: 92%

“…The emissions of CO and HC increased more when using EGR technology in comparison with the absence EGR. Poor combustion quality produced with applied EGR technology due to excessive dilution by the inert gases (D'Errico et al, 2012;Bhurat et al, 2021;Chaichan et al, 2022). Figure 5 shows that the CO emissions increased with increasing the ratio of EGR.…”

Section: Emission Characteristicsmentioning

confidence: 99%

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Emissions Characteristics and Engine Performance from the Interaction Effect of EGR and Diesel-Ethanol Blends in Diesel Engine

Fayad

Al-Ghezi

Hafad

et al. 2022

Int. J. Renew. Energy Dev.

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Recently, most of the researchers focused on provide lower greenhouse gas emissions that emitted from diesel engines by using renewable fuels to be good alternative to the conventional diesel fuel. Ethanol can be derived from renewable sources such as sugar cane, corn, timber and dates. In the current study, the ethanol fuel used in the tests was derived from the dates. The effects of using exhaust gas recirculation (EGR) diesel-ethanol blend (E10) with on engine performance and emissions characteristics have been studied in diesel engine under various engine loads. This study focused the use of oxygen in the bio-ethanol composition to compensate for the decrease occurred by the addition of EGR, which improves the engine performance and reduces its emissions. In this experiment, the ratios of EGR were 10%, 20% and 30% as well as 10% ratio of ethanol was blended into the diesel fuel blend under fixed engine speed. A traditional (without additional systems to reduce emissions) four cylinders direct injection (DI) diesel engine was used for all tests. The brake specific fuel consumption (BSFC) increased with increasing the EGR ratio by 10%, 20% and 30% by 18.7%, 22.4% and 37.4%, respectively. The thermal efficiency decreased under variable conditions of engine load for different ethanol blends. Furthermore, the emissions of NOX decreased when fuelled B10 into the engine in comparison with diesel under low engine load. Significant reduction in the NOx emissions were found when applied EGR in the tests than to the absence EGR for E10 blend and diesel. The NOx reduction rate was 12.3%, 30.6% and 43.4% when EGR rate was 10%, 20% and 30%, respectively. In addition, the concentrations of HC and CO emissions decreased more by 8.23% and 6.4%, respectively, when using E10 in comparison with the diesel for various engine loads. It is indicated that the oxygen reduction by EGR effect was compensated from ethanol blend combustion. The results showed that the combination use of E10 and EGR leads to significant reduction in engine emissions accompanied with partial reduction in the engine performance.

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Section: Emission Characteristicssupporting

confidence: 92%

Section: Emission Characteristicsmentioning

confidence: 99%

Emissions Characteristics and Engine Performance from the Interaction Effect of EGR and Diesel-Ethanol Blends in Diesel Engine

Fayad

Al-Ghezi

Hafad

et al. 2022

Int. J. Renew. Energy Dev.

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“…Their source can be both the fuels themselves contaminated with nitrogen compounds and air. Pure methanol burns with no nitrogen oxides; moreover, the addiction of first-order alcohols (methanol, ethanol) to the combustion system allows for the reduction of nitrogen oxide emissions [53][54][55]. The last method for obtaining hydrogen-rich gas from methanol is autothermal reforming, combining POM and MSR.…”

Section: Hydrogen Generation From Methanolmentioning

confidence: 99%

Recent Progress on Hydrogen Storage and Production Using Chemical Hydrogen Carriers

et al. 2022

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Depleting fossil fuel resources and anthropogenic climate changes are the reasons for the intensive development of new, sustainable technologies based on renewable energy sources. One of the most promising strategies is the utilization of hydrogen as an energy vector. However, the limiting issue for large-scale commercialization of hydrogen technologies is a safe, efficient, and economical method of gas storage. In industrial practice, hydrogen compression and liquefaction are currently applied; however, due to the required high pressure (30–70 MPa) and low temperature (−253 °C), both these methods are intensively energy consuming. Chemical hydrogen storage is a promising alternative as it offers safe storage of hydrogen-rich compounds under ambient conditions. Although many compounds serving as hydrogen carriers are considered, some of them do not have realistic perspectives for large-scale commercialization. In this review, the three most technologically advanced hydrogen carriers—dimethyl ether, methanol, and dibenzyltoluene—are discussed and compared. Their potential for industrial application in relation to the energy storage, transport, and mobility sectors is analyzed, taking into account technological and environmental aspects.

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Performance and emission characteristics of a diesel engine with on-board produced hydrogen-oxygen injection

Bari

Dewar

Zhang

2022

Thermal Science and Engineering Progress

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PM and NOX emissions amelioration from the combustion of diesel/ethanol-methanol blends applying exhaust gas recirculation (EGR)

Cited by 3 publications

References 18 publications

Emissions Characteristics and Engine Performance from the Interaction Effect of EGR and Diesel-Ethanol Blends in Diesel Engine

Emissions Characteristics and Engine Performance from the Interaction Effect of EGR and Diesel-Ethanol Blends in Diesel Engine

Recent Progress on Hydrogen Storage and Production Using Chemical Hydrogen Carriers

Performance and emission characteristics of a diesel engine with on-board produced hydrogen-oxygen injection

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