Exhaust emissions of diesel engines operating under transient conditions with biodiesel fuel blends

2012 ◽  
Vol 38 (5) ◽  
pp. 691-715 ◽  
Author(s):  
Evangelos G. Giakoumis ◽  
Constantine D. Rakopoulos ◽  
Athanasios M. Dimaratos ◽  
Dimitrios C. Rakopoulos
Keyword(s):  
Diesel Engines ◽  
Exhaust Emissions ◽  
Biodiesel Fuel ◽  
Transient Conditions ◽  
Fuel Blends

A novel soluble nano-catalysts in diesel–biodiesel fuel blends to improve diesel engines performance and reduce exhaust emissions

Fuel ◽  
2015 ◽  
Vol 139 ◽  
pp. 374-382 ◽  
Author(s):  
Mehrdad Mirzajanzadeh ◽  
Meisam Tabatabaei ◽  
Mehdi Ardjmand ◽  
Alimorad Rashidi ◽  
Barat Ghobadian ◽  
...  
Keyword(s):  
Diesel Engines ◽  
Exhaust Emissions ◽  
Biodiesel Fuel ◽  
Fuel Blends ◽  
Nano Catalysts

Enhancing Diesel Engine Performance and Reducing Emissions Using Binary Biodiesel Fuel Blend

2019 ◽  
Vol 142 (1) ◽  
Author(s):  
Paramvir Singh ◽  
S. R. Chauhan ◽  
Varun Goel ◽  
Ashwani K. Gupta
Keyword(s):  
Fuel Consumption ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Transport Sector ◽  
Biodiesel Fuel ◽  
Injection Timing ◽  
Fuel Blend ◽  
Fuel Blends ◽  
Fuel Mixing ◽  
Ci Engines

Fossil fuel consumption provides a negative impact on the human health and environment in parallel with the decreased availability of this valuable natural resource for the future generations to use as a source of chemical energy for all applications in energy, power, and propulsion. The diesel fuel consumption in the transport sector is higher than the gasoline in most developing countries for reasons of cost and economy. Biodiesel fuel offers a good replacement for diesel fuel in compression ignition (CI) diesel engines. Earlier investigations by the authors revealed that a blend of 70% amla seed oil biodiesel and 30% eucalyptus oil (AB70EU30) is the favorable alternative renewable fuel blend that can be used as a fuel in diesel engines. With any fuel, air/fuel mixing and mixture preparation impact efficiency, emissions, and performance in CI engines. Minor adjustments in engine parameters to improve air/fuel mixing and combustion are deployable approaches to achieve good performance with alternative fuel blends in CI engines. This paper provides the role of a minor modification to engine parameters (compression ratio, injection timing, and injection pressure) on improved performance using the above mixture of binary fuel blends (AB70EU30). The results showed that the use of AB70EU30 in modified engine resulted in higher brake thermal efficiency and lower brake specific fuel consumption compared to normal diesel for improved combustion that also resulted in very low tailpipe emissions.

scholarly journals Sunflower Methyl Ester as an Engine Fuel: Performance Evaluation and Emissions Analysis

2013 ◽  
Vol 2013 ◽  
pp. 1-12 ◽  
Author(s):  
Bjorn S. Santos ◽  
Sergio C. Capareda ◽  
Jewel A. Capunitan
Keyword(s):  
Methyl Ester ◽  
Diesel Engines ◽  
Power Loss ◽  
Engine Performance ◽  
Exhaust Emissions ◽  
Engine Fuel ◽  
Brake Specific Fuel Consumption ◽  
Fuel Blends ◽  
Soybean Methyl Ester ◽  
Total Hydrocarbons

Biodiesel from sunflower oil offers a potential as an alternative to petroleum-based diesel fuel and must be evaluated in terms of the resulting engine performance and exhaust emissions. Two diesel engines rated at 14.2 kW (small) and 60 kW (large) were operated on pure sunflower methyl ester (SFME) and its blends with a reference diesel (REFDIESEL). Results showed that less power and torque were delivered by both the small and large engines when ran on pure SFME than on REFDIESEL, while brake-specific fuel consumption (BSFC) was found to be higher in pure SFME. Blends of SFME with REFDIESEL (B5 and B20) showed negligible power loss and similar BSFC with the REFDIESEL. Higher concentrations of nitrogen oxides (), carbon dioxide (CO2), and total hydrocarbons (THC) in the exhaust emissions were observed for both pure SFME and SFME-REFDIESEL fuel blends. Comparison with soybean methyl ester indicates similar engine performance. Thus, blends of SFME with diesel may be used as a supplemental fuel for steady-state nonroad diesel engines to take advantage of the lubricity of biodiesel as well as contributing to the goal of lowering the dependence to petroleum diesel.

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

Processes ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 623
Author(s):  
María Dolores Redel-Macías ◽  
Sara Pinzi ◽  
Meisam Babaie ◽  
Ali Zare ◽  
Antonio Cubero-Atienza ◽  
...  
Keyword(s):  
Literature Review ◽  
Diesel Fuel ◽  
Diesel Engines ◽  
Internal Combustion Engines ◽  
Exhaust Emissions ◽  
Fuel Blend ◽  
Promising Alternative ◽  
Continuous Increase ◽  
Fuel Blends

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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