Use of Water Injection Technique to Improve the Combustion Efficiency of the Spark-Ignition Engine: A Model Study
 
More details
Hide details
1
Faculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland
2
Department of Mechanical Engineering, Applied Science Private University, Al Arab st. 21, 11931 Amman, Jordan
CORRESPONDING AUTHOR
Gabriel Borowski   

Faculty of Environmental Engineering, Lublin University of Technology, Nadbystrzycka 40B, 20-618 Lublin, Poland
Publish date: 2019-02-01
 
J. Ecol. Eng. 2019; 20(2):226–233
KEYWORDS
TOPICS
ABSTRACT
In the paper, the effect of water injection and different air/fuel ratio (AFR) on the gasoline engine performance and emissions was investigated theoretically. A four cylinder SI engine model was built using GT-Power professional software. The gasoline fuel was injected directly to the cylinder and the water was injected into the intake manifold with different mass flow rate. The calculated engine outputs were: cylinder pressure and temperature, brake torque, brake power, mean effective pressure, thermal efficiency, carbon monoxide, hydrocarbon, and nitrogen oxide emissions. The results of simulations shows that the increased water mass flow rate resulted in improved engine performance and decreased emissions compared to neat gasoline fuel. However, we found that the excessive increase of the water amount inside the cylinder resulted in deteriorated engine performance and, consequently, poorly combustion efficiency.