Effect of different levels of ethanol addition on performance, emission, and combustion characteristics of a gasoline engine

Köten H., Karagöz Y., Balcı Ö.

ADVANCES IN MECHANICAL ENGINEERING, vol.12, 2020 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12
  • Publication Date: 2020
  • Doi Number: 10.1177/1687814020943356
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Applied Science & Technology Source, Computer & Applied Sciences, INSPEC, Directory of Open Access Journals, Civil Engineering Abstracts
  • Keywords: Ethanol, NOx, in-cylinder pressure, CO, heat release rate, SI ENGINE, PORT INJECTION, POLLUTANT EMISSION, EXHAUST EMISSIONS, BLENDS, FUELS
  • Yıldız Technical University Affiliated: Yes


In this study, a four-stroke, naturally aspirated, single-cylinder, spark ignition engine was operated with neat gasoline fuel. In-cylinder pressure, performance, and emission values were obtained at full load and 2400-r/min constant engine speed. Using these values, a single-dimensional theoretical model was calibrated. A Kistler spark plug-type pressure sensor was used to obtain in-cylinder pressure. After validation of this single-dimensional theoretical model obtained by the help of a commercial engine analysis software (AVL-Boost), different levels of ethanol addition (2.5%, 5%, 10%, 15%, and 20%) into gasoline were analyzed and compared with neat gasoline fueled conditions. According to obtained results, NO(x)emissions increased with incremental amount of ethanol. The CO and total hydrocarbons emissions decreased; however, they can be controlled using after-treatment systems such as three-way catalyst.