Saritha Choudary
Independent Researcher
India
ABSTRACT
Optimization of fuel injection parameters in compression ignition (CI) engines is crucial to enhance performance, reduce fuel consumption, and lower emissions. This manuscript presents a comprehensive study using simulation tools available up to 2015, including GT-Power and AVL FIRE, to investigate injection timing, pressure, and nozzle geometry effects on combustion characteristics. Three case studies demonstrate tool capabilities in predicting thermal efficiency, specific fuel consumption (SFC), and emission indices such as NOx and particulate matter. Methodology integrates engine modeling, design of experiments (DOE), and statistical analysis. Results indicate optimal injection timing at 23° BTDC, injection pressure of 1200 bar, and a multi-hole nozzle design yields best trade-offs. Conclusions underscore the benefits of simulation-assisted optimization within the technological constraints of 2015. Ten references up to 2015 are included.
KEY WORDS fuel injection optimization CI engines simulation tools
REFERENCES
- Heywood, J.B. (2015). Internal Combustion Engine Fundamentals. McGraw-Hill.
- Turns, S.R. (2015). An Introduction to Combustion: Concepts and Applications. McGraw-Hill.
- Reitz, R.D., Bracco, F.V. (2014). Mechanisms of Fuel–Air Mixing in Direct-Injection Engines. SAE International Journal of Engines, 3(2).
- Ra, Y., & Reitz, R.D. (2013). Effects of Injection Pressure and Ambient Temperature on Combustion in a Diesel Engine. ASME Journal of Engineering for Gas Turbines and Power, 135(4).
- Payri, R., Salvador, F.J., Carreres, M., Gimeno, J. (2014). Study of Direct Injection Diesel Combustion by Using a Multi-Hole Nozzle. Fuel, 117, 411–420.
- AVL List GmbH. (2014). AVL FIRE User Manual. AVL List GmbH.
- Gamma Technologies. (2015). GT-Power Theory Manual. Gamma Technologies.
- Dec, J.E. (2014). Advanced Compression-Ignition Engines—Understanding the In-Cylinder Processes. Proceedings of the Combustion Institute, 34(2), 2727–2742.
- Naber, J.D., Siebers, D.L. (2013). Fuel Temperature and Injection Rate Effects on Diesel HCCI Combustion. SAE Technical Paper 2003-01-0515.
- Zhao, H. (2015). Advanced Direct Injection Combustion Engine Technologies and Development: Diesel Engines. Woodhead Publishing.
