Ethanol blending in petrol: A techno - commercial overview

Sanap, Pooja P.; Diwan, Anukul G.; Mahajan, Yogesh S.

doi:10.1016/j.matpr.2023.04.055

Cited by 5 publications

(4 citation statements)

References 75 publications

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“…), there was no necessity to delay combustion when incorporating bioethanol as an additive. This is attributed to bioethanol's cooling effect on the fuel-air mixture, accounting for one of the longer ignition delays within the gasoline-bioethanol blend [28].…”

Section: Resultsmentioning

confidence: 99%

Research on Bioethanol/Gasoline Ratios and Engine Spark Ignition Control for Energy and Environmental Sustainability of Vehicles

Rimkus,

Mejeras,

Pukalskas

et al. 2023

Preprint

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This article presents an experimental study focused on the impact of supplementing pure gasoline (E0) with bioethanol, gradually increasing the biofuel concentration up to 70% (E10, E50, and E70). The research was conducted in two phases: In the first phase (Part I), the engine's operation involved varying engine speeds (n = 2000 rpm, n = 2500 rpm) and adjusting throttle openings (15%, 20%, 25%) to analyze changes in brake torque, thermal efficiency, and ecological indicators. The second phase (Part II) aimed to complement and clarify the study data. Here, the engine was maintained at a constant speed (n = 2000 rpm) and brake torque (MB = 80 Nm) while altering ignition timing. The findings revealed that increasing the bioethanol concentration up to 70% led to modest enhancements in engine brake torque and thermal efficiency. However, the most significant impact was observed in the reduction of greenhouse gas emissions and incomplete combustion byproducts. The study also established that achieving higher thermal efficiency requires compensating for the extended ignition delay phase resulting from bioethanol addition by advancing ignition timing. Nevertheless, this approach is constrained by the escalating emissions of carbon dioxide and hydrocarbons. These findings provide valuable insights into optimizing the balance between bioethanol supplementation, engine performance, and environmental sustainability in spark ignition engines.

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Section: Resultsmentioning

confidence: 99%

Research on Bioethanol/Gasoline Ratios and Engine Spark Ignition Control for Energy and Environmental Sustainability of Vehicles

Rimkus,

Mejeras,

Pukalskas

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Despite the faster combustion characteristics of bioethanol (Table 2), increasing the concentration of bioethanol did not require a later start of combustion. This is attributed to the cooling effect of bioethanol on the fuel-air mixture and the higher auto-ignition temperature, which accounts for one of the longer ignition delays within the gasoline-bioethanol blend [42]. Bioethanol has a higher octane content compared to conventional gasoline (Table 2), but the engine used in the experimental study is not optimized for fuels with higher octane contents (without the option of increasing the compression ratio), and therefore, the benefits of bioethanol are only partially realized.…”

Section: Energy Performancementioning

confidence: 99%

“…Despite the faster combustion characteristics of bioethanol (Table 2), increasing the concentration of bioethanol did not require a later start of combustion. This is attributed to the cooling effect of bioethanol on the fuel-air mixture and the higher auto-ignition temperature, which accounts for one of the longer ignition delays within the gasoline-bioethanol blend [42]. The specific fuel volume consumption (BSFC_V) indicator is significant, especially considering the fact that fuel procurement is based on volume.…”

Section: Energy Performancementioning

confidence: 99%

Impact of Bioethanol Concentration in Gasoline on SI Engine Sustainability

Rimkus,

Pukalskas,

Mejeras

et al. 2024

Sustainability

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This study presents an experimental investigation into the impact of blending bioethanol (E100) with conventional gasoline (E0), incrementally increasing biofuel levels up to E10, E50, and E70. The test was carried out in two stages: Stage I assessed the engine’s performance under fixed speeds (n = 2000 rpm and n = 2500 rpm) and fixed throttle positions (15%, 20%, and 25%) to measure changes in engine torque, efficiency, and environmental metrics by varying the concentration of bioethanol in the fuel. Stage II aimed to enrich the initial findings by conducting an additional test, running the engine at a fixed speed (n = 2000 rpm) and braking torque (MB = 80 Nm) and varying the ignition timing. Results indicated slight improvements in engine brake torque and thermal efficiency (up to 1.7%) with bioethanol content increased to 70%, and a notable reduction in incomplete combustion byproducts—carbon monoxide and hydrocarbons emissions (up 15% and 43%). Nitrogen oxide emissions were reduced by up to 23%, but carbon dioxide emissions decreased by a mere 1.1%. In order to increase thermal efficiency by adding higher bioethanol blend concentrations, adjusting the ignition timing to counter the longer ignition delay is necessary; however, higher emissions of nitrogen oxides and hydrocarbons are a major drawback of such a strategy. The results of the research are important in determining the optimal concentration of bioethanol in the mixture with gasoline for the energy and environmental sustainability of a spark ignition engine.

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“…Due to butanol possessing a higher oxygen content than biodiesel, there is a reduction in the amount of soot produced. A further advantage of using butanol over ethanol and petrol blends (Sanap et al, 2023), is related to the fact NO x emissions can be reduced due to its higher heat evaporation, thus resulting in a lower combustion temperature (Rakopoulos et al, 2010). The main disadvantage centred around the use of butanol is related to its low production rates and end-product toxicity and for this reason often ethanol production was favoured over that of butanol.…”

Section: Biobutanolmentioning

confidence: 99%

Macroalgae biorefinery and its role in achieving a circular economy

Lawrence,

Oliva,

Murphy

et al. 2023

Algal Systems for Resource Recovery From Waste and Wastewater

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Availability of fossil fuels and feedstocks is a major problem currently faced by a variety of sectors thus highlighting the importance of transitioning towards a circular economy. Increased pollution, fossil fuel availability and other adverse effects are just some of the reasons that have prompted a need to find additional resources for fuel. One such feedstock that has shown to be both promising and viable is macroalgae. This chapter focuses on the latest scientific literature related to the development of macroalgae biorefineries, focusing on the different biological processes and how the resulting generated bioproducts can positively impact the global bioeconomy. The fundamental biological processes are explained while also providing details on specific problems the sector currently faces. Potential areas of further development and recent scientific discoveries of a variety of macroalgal species are also discussed.

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Ethanol blending in petrol: A techno - commercial overview

Cited by 5 publications

References 75 publications

Research on Bioethanol/Gasoline Ratios and Engine Spark Ignition Control for Energy and Environmental Sustainability of Vehicles

Research on Bioethanol/Gasoline Ratios and Engine Spark Ignition Control for Energy and Environmental Sustainability of Vehicles

Impact of Bioethanol Concentration in Gasoline on SI Engine Sustainability

Macroalgae biorefinery and its role in achieving a circular economy

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