The influence of ethanol-diesel blend on pollutant emissions from different bus fleets under acceleration transitions

Mata, Carmen; Gómez, Arántzazu; Armas, Octavio

doi:10.1016/j.fuel.2017.08.018

Cited by 16 publications

(8 citation statements)

References 27 publications

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“…Combustion noise is associated with in-cylinder pressure rise, mostly next to the ignition delay period. When the cylinder pressure rises, it provokes vibrations of the engine's block and, therefore, combustion noise radiation [12,55]. Therefore, both rate of fuel injected and timing have an important role in the fuel burning velocity and rate of heat release and, thus, in the combustion noise.…”

Section: Noise Emissionsmentioning

confidence: 99%

Bibliometric Studies on Emissions from Diesel Engines Running on Alcohol/Diesel Fuel Blends. A Case Study about Noise Emissions

et al. 2021

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The growing demand for fossil fuels, the rise in their price and many environmental concerns strengthen the incessant search for fuel alternatives. Recently, traffic noise has been described as a threat to human health and the environment, being responsible for premature deaths. In this context, the usage of alcohol/diesel fuel blends in diesel engines has gained increasing impact as a substitute fuel for use in internal combustion engines. Moreover, alcohol can be derived from environmentally friendly processes, i.e., fermentation. Furthermore, alcohols can enhance combustion characteristics due to a rise of the oxygen concentration, thus decreasing major emissions such as soot and reducing knock. The commonly used alcohols blended with diesel fuel are methanol and ethanol, recently followed by butanol. In contrast, there are very few studies about propanol blends; however, emissions reduction (including noise) could be remarkable. In the present work, an analytical literature review about noise and exhaust emissions from alcohol/diesel fuel blends was performed. The literature review analysis revealed a continuous increase in the number of publications about alcohol/diesel fuel blend exhaust emissions since 2000, confirming the growing interest in this field. However, only few publications about noise emission were found. Then, an experimental case study of noise emitted by an engine running on different alcohol (ethanol, butanol and propanol)/diesel fuel blends was presented. Experimental results showed that although diesel fuel provided the best results regarding noise emissions, butanol displayed the least deviation from that of diesel fuel among all tested alcohol blends. It may be concluded that tested alcohol/diesel fuel blends in general, and butanol blends in particular, could be a promising alternative to diesel fuel, considering noise behavior.

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Section: Noise Emissionsmentioning

confidence: 99%

Bibliometric Studies on Emissions from Diesel Engines Running on Alcohol/Diesel Fuel Blends. A Case Study about Noise Emissions

et al. 2021

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“…Four categories, idle (I), acceleration (A), deceleration with fuel consumption (DwF) and deceleration without fuel consumption (D) [21] were selected as example for this work. In this chapter, as example, only the comparison under acceleration coming from idle sequence is presented.…”

Section: Properties Of Fuels Used In Parts Durability Testing and In mentioning

confidence: 99%

“…Two busses used for urban transportation were tested by Mata et al [21] using a bioethanol-diesel blend (7.7% of alcohol) in two cities at different altitudes. Notable reductions in particle concentrations were obtained with e-diesel blend while the trend of NOx emissions depended on the altitude.…”

Section: Introductionmentioning

confidence: 99%

Bioethanol-Diesel Blends Used in Diesel Engines and Vehicles under Transient Operation

Vergel¹,

Cárdenas²,

García-Contreras³

et al. 2021

Bioethanol Technologies

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This book chapter describes, the experiences of different experimental works related to the study of the effect of bioethanol-diesel fuel blends directly used on a study about the integrity of some parts of a diesel injection system, and on performance and regulated emissions of engines and/or vehicles under different transient conditions. The experiences described are carried out in an engine test bench, two public busses under urban transportation and a construction machine in an actual railway construction. A bioethanol-diesel fuel blend with 10% v/v of bioethanol was used for engine testing to study the potential effect on performance and emissions. Later, a blend with around 8% v/v of alcohol concentration was selected to carry out the experimental work with an injection system and with busses and construction machinery. This work points out the most important advantages and disadvantages of the use of bioethanol blended with diesel fuel. The most important strength is the potential of these fuel blends for reducing particle matter without penalty in nitrogen oxides emissions. As main weakness can be cited the need for adding a stabilizer additive which restricts the desirable increase of bioethanol content in the blend.

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“…), or as an almost pure fuel (E85, E100), the number representing the ethanol percentage content in the blend [5]. Moreover, if blended with diesel oils, it can also be used in compression ignition engine [6].…”

Section: Introductionmentioning

confidence: 99%

EGR Strategy for NOx Emission Reduction in a CAI Engine Fuelled with Innovative Biogas

Mariani¹,

Unich²,

Minale³

2019

IJES

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Gaseous fuel utilization reduces pollutant emissions and makes thermal energetic systems less dependent on oil. Their carbon content is low, which means low CO2 emissions, and a lower cost with respect to conventional fuels. If gaseous fuels have a non-fossil origin, their adoption would have a beneficial impact on global CO2 balance and on the dependence of the energy sector from fossil fuels. Biogas is produced from the anaerobic digestion of organic materials, with the composition depending on the feedstock and on the production processes. The use of biogas in internal combustion engines (ICE) is very attractive. However, the presence in the biogas of an inert gas like CO2 has adverse effects on combustion, reducing combustion speed, narrowing flammability limits with harmful effects on combustion stability. A possible way for improving combustion performance of biogas is hydrogen addition. Innovative anaerobic digestion processes, which maximize the H2 yield, can end up with biogases made of CH4, CO2 and H2. The biogas, generally adopted as fuel in positive ignition ICEs, is also suitable for Controlled Auto Ignition (CAI) engines. Aim of this work is to investigate the biogas combustion in CAI ICE by means of numerical simulations. The effect of fuel composition and EGR on engine performance and exhaust emissions was evaluated. Authors compared conventional and innovative biogases composed by CH4, CO2 and H2 of different compositions. CAI systems are controlled with varying intake gas conditions: air-fuel ratio, boost pressure and charge temperature. The temperature depends on recycled exhaust gas content, which has an impact on the combustion process. Authors investigated the effect that EGR has on the in-cylinder gas temperature and reaction mechanism, focusing on NOx emission formations.

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The influence of ethanol-diesel blend on pollutant emissions from different bus fleets under acceleration transitions

Cited by 16 publications

References 27 publications

Bibliometric Studies on Emissions from Diesel Engines Running on Alcohol/Diesel Fuel Blends. A Case Study about Noise Emissions

Bibliometric Studies on Emissions from Diesel Engines Running on Alcohol/Diesel Fuel Blends. A Case Study about Noise Emissions

Bioethanol-Diesel Blends Used in Diesel Engines and Vehicles under Transient Operation

EGR Strategy for NOx Emission Reduction in a CAI Engine Fuelled with Innovative Biogas

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