Bio-butanol as a new generation of clean alternative fuel for SI (spark ignition) and CI (compression ignition) engines

An overview of Higher alcohol and biodiesel as alternative fuels in engines

Several alternatives have been recently proposed in the literature for replacing gasoline fuel in spark-ignition engines. These alternatives were pertained based on different engine working conditions and they yield fairly different performance and emissions results. Consequently, there is a major need for comparing and evaluating the performance and environmental behavior of these alternatives at same conditions, especially the new proposed ones. Five different alternatives, as ethanol (E), methanol (M), n-butanol (nB), isobutanol (iB) and acetone (AC), were experimentally applied at same blend rates (3%, 7% and 10% by volume) in gasoline and same engine working conditions. This is the first time that such alternatives are compared with each others; in addition, the alternatives are compared with neat gasoline. The comparison basis was focused on the performance via brake power (BP), torque (Tq) and volumetric efficiency (VE) and the emissions via CO (carbon monoxide), CO2 (carbon dioxide) and UHC (unburnt hydrocarbons). Results demonstrated that the nB and iB alternatives provide a significant drop in BP, Tq and VE when compared to other alternatives as well as the neat gasoline. The maximum engine performance is obtained by both E and M. AC showed a moderate performance among all test fuels. Regarding the emissions, AC showed the lowest CO and UHC emissions, however, nB and iB showed the highest emissions.

Investigations on performance and pollutant emissions of spark-ignition engines fueled with n-butanol–, isobutanol–, ethanol–, methanol–, and acetone–gasoline blends: A comparative study

https://hal.archives-ouvertes.fr/hal-02923473/document

Progress of acetone-butanol-ethanol (ABE) as biofuel in gasoline and diesel engine: A review

Performance assessment and productivity of a simple-type solar still integrated with nanocomposite energy storage system

The sleek of using alternatives to gasoline fuel in internal combustion engines becomes a necessity as the environmental problems of fossil fuels as well as their depleted reserves. This research presents an experimental investigation into a new blended fuel; the effects of n-butanol–methanol–gasoline fuel blends on the performance and pollutant emissions of an SI (spark-ignition) engine were examined. Four test fuels (namely 0, 3, 7 and 10 volumetric percent of n-butanol–methanol blends at equal rates, e.g., 0%, 1.5%, 3.5% and 5% for n-butanol and methanol, in gasoline) were investigated in an engine speed range of 2600–3400 r/min. In addition, the dual alcohol (methanol and n-butanol)–gasoline blends were compared with single alcohol (n-butanol)–gasoline blends (for the first time) as well as with the neat gasoline fuel in terms of performance and emissions. The experimental results showed that the addition of low content rates of n-butanol–methanol to neat gasoline adversely affects the engine performance and exhaust gas emissions as compared to the results of neat gasoline and single alcohol–gasoline blends; in particular, a reduction in engine volumetric efficiency, brake power, torque, in-cylinder pressure, exhaust gas temperature and CO2 emissions and an increase in concentrations of CO and UHC (unburned hydrocarbons) emissions were observed for the dual alcohols. However, higher rates of n-butanol–methanol blended in gasoline were observed to improve the SI engine performance parameters and emission concentration. Oppositely the higher rates of single alcohol–gasoline blends were observed to provide adverse results, e.g., higher emissions and lower performance than those of lower rates of single alcohol. Finally, dual alcohol–gasoline blends could exceed (i.e. provide higher performance and lower emissions) single alcohol–gasoline blends and pure gasoline at higher rates (>10 vol.%) in the blend and, in turn, it is recommended to be used at high rate conditions.

https://cyberleninka.org/article/n/657097.pdf

Abdel-Fattah Mahrous

Papers

Performance and emissions assessment of n-butanol–methanol–gasoline blends as a fuel in spark-ignition engines