Comparative effect of fuel ethanol content on regulated and unregulated emissions from old model vehicles: An assessment and policy implications

Lin, Yuan-Chung; Jhang, Syu-Ruei; Lin, Shio‐Jean; Chen, Kang-Shin

doi:10.1016/j.apr.2021.02.014

Cited by 13 publications

(6 citation statements)

References 40 publications

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“…There is a 42 %, 61 %, and 20 % gain for respectively vehicle A, B and C with E85. The general trend of decreasing CO emissions with increasing ethanol content is consistent with previous studies [3][4][5][6][7][8], and reductions may be ascribed to the fuel-borne oxygen, which leans the air-fuel ratio and improves oxidation during combustion and over the catalyst. NOx emissions results show that fuel impact on NOx emissions varied by vehicle.…”

Section: Cold Start Emissions and Global Emissions 262supporting

confidence: 90%

“…Above 20 % vol, the ethanol positive effect on combustion seems to be inhibited, as an increase in HC emissions is observed, irrespective of the vehicle technology. While trends of decreasing HC emissions with increasing ethanol content have generally been seen in studies utilizing larger fleets of vehicles [5,6,8,10], this increasing trend was also observed by G. Karavalakis et al [9] and M.B. Celik [25].…”

Section: Cold Start Emissions and Global Emissions 262supporting

confidence: 53%

“…This is most related to different fuel matrix, engine, and aftertreatment calibrations as well as different driving cycles used. First of all, it has been demonstrated that the oxygen content increase associated to ethanol generally tends to reduce carbon monoxide (CO) emissions [3][4][5][6][7][8]. However, the reported reduction percentage varies among the different studies.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of fuel ethanol content on regulated and non-regulated emissions monitored by various analytical techniques over flex-fuel and conversion kit applications

Fortune

Cologon

Hayrault

et al. 2023

Fuel

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Section: Cold Start Emissions and Global Emissions 262supporting

confidence: 90%

Section: Cold Start Emissions and Global Emissions 262supporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Impact of fuel ethanol content on regulated and non-regulated emissions monitored by various analytical techniques over flex-fuel and conversion kit applications

Fortune

Cologon

Hayrault

et al. 2023

Fuel

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“…In this study, the quantity of aromatics emitted by gasoline cars was 1.5 times higher than that emitted by E10. Previous studies revealed the reduction of aromatics from ethanol fuels [48][49][50]. Aromatics mainly come from the incomplete combustion of fuels [51], which unquestionably suffer a decrease in quantity as the ethanol content increases.…”

Section: Vehicle Emissionsmentioning

confidence: 99%

Characteristics and Secondary Organic Aerosol Formation of Volatile Organic Compounds from Vehicle and Cooking Emissions

et al. 2023

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In the present work, volatile organic compounds (VOCs) from vehicle exhaust and cooking fumes were investigated via simulation experiments, which covered engine emissions produced during gasoline direct injection (GDI) using two kinds of fuels and cooking emissions produced by preparing three domestic dishes. The distinct characteristics of VOCs emitted during the two processes were identified. Alkanes (73% mass fraction on average) and aromatics (15% on average) dominated the vehicle VOCs, while oxygenated VOCs (49%) and alkanes (29%) dominated the cooking VOCs. Isopentane (22%) was the most abundant species among the vehicle VOCs. N-hexanal (20%) dominated the cooking VOCs. The n-hexanal-to-n-pentanal ratio (3.68 ± 0.64) was utilized to identify cooking VOCs in ambient air. The ozone formation potential produced by cooking VOCs was from 1.39 to 1.93 times higher than that produced by vehicle VOCs, which indicates the significant potential contribution of cooking VOCs to atmospheric ozone. With the equivalent photochemical age increasing from 0 h to 72 h, the secondary organic aerosol formation by vehicle VOCs was from 3% to 38% higher than that of cooking VOCs. Controlling cooking emissions can reduce SOA pollution in a short time due to its higher SOA formation rate than that of vehicle VOCs within the first 30 h. However, after 30 h of oxidation, the amount of SOAs formed by vehicle exhaust emissions exceeded the amount of SOAs produced by cooking activities, implying that reducing vehicle emissions will benefit particle pollution for a longer time. Our results highlight the importance of VOCs produced by cooking fumes, which has not been given much attention before. Further, our study suggested that more research on semi-volatile organic compounds produced by cooking emissions should be conducted in the future.

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“…36 The largest reduction in emissions was predicted for E10 fuel. 37 When employing alcohol-gasoline blends, combustion efficiency has been increased, which results in decreases in HC and CO emissions. 38 Blending of sugarcane and corn based ethanol is effective method for achieving the lower CO 2 emission.…”

Section: Introductionmentioning

confidence: 99%

Modeling of combustion and emissions behavior on the effect of ethanol–gasoline blends in a four stroke SI engine

Elshenawy

Razik

Gad

2023

Advances in Mechanical Engineering

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Researchers are increasingly coming up with creative solutions to reduce fuel consumption and harmful emissions due to the political unrest around crude oil and harsher environmental legislation around the globe. Using gasoline and ethanol blends as substitutes in SI engines is thought to be a promising approach. To lower the cost of experimental test, it is still necessary to provide a model to explore the emissions, performance and combustion of ethanol mixtures in petrol engine under various operating situations. A comprehensive quasi dimensional two zone model was used. This mathematical model could predict and analyze the engine combustion, emissions and performance parameters using MATLAB. The thermal efficiency was improved for E20 by 3%. Ethanol addition decreased SFC value by average 7.2% for E20 with respect to gasoline. In comparison to gasoline, the increases in output power were 1.1%, 3%, 4%, and 5.5% are obtained with E5, E10, E15, and E20. and 45% The highest increases in peak cylinder pressure and cylinder temperature for E20 about gasoline are 14 and 11%, respectively about gasoline. At 2500 rpm, the greatest percentage declines in NOx, CO, and HC emissions for E20 are 3.3, 23.5 and 45% about gasoline. The results of comparing the mathematical model’s validity to those acquired from experimental data and diesel RK software demonstrate that the MATLAB code is appropriate. The mathematical model proved that ethanol blending can be used up to 20% as alternative fuels to improve the gasoline engine performance, combustion and emissions.

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Comparative effect of fuel ethanol content on regulated and unregulated emissions from old model vehicles: An assessment and policy implications

Cited by 13 publications

References 40 publications

Impact of fuel ethanol content on regulated and non-regulated emissions monitored by various analytical techniques over flex-fuel and conversion kit applications

Impact of fuel ethanol content on regulated and non-regulated emissions monitored by various analytical techniques over flex-fuel and conversion kit applications

Characteristics and Secondary Organic Aerosol Formation of Volatile Organic Compounds from Vehicle and Cooking Emissions

Modeling of combustion and emissions behavior on the effect of ethanol–gasoline blends in a four stroke SI engine

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