Building a research model for the combustion process of fuel in a constant volume combustion chamber

ABSTRACT

Blending biodiesel at different ratios leads to fluctuations in properties such as oxygen content, cetane number, speed, density, and calorific value, affecting performance and emissions. Therefore, studying the combustion process of biodiesel is necessary. This study describes the construction of a CVCC (Constant volume combustion chamber) model to study the fuel combustion process and the impact of temperature on the characteristic parameters of the combustion process. Fuels used for simulations included diesel fuel and B10 biodiesel derived from palm oil. The calculated results from the model are compared with experimental data to verify, analyse, and evaluate the combustion process in CVCC. Analysis of the influence of combustion chamber temperature shows that increasing the temperature from 300K to 450K leads to a decrease in the mixing time of the mixture, a decrease in the spray length, an increase in the fuel evaporation rate, and the combustion process occurs. Faster, the peak pressure appears earlier and higher, and the heat transfer rate is faster. Pressure increases faster during the delayed combustion phase. At the same time, increasing the oxygen concentration from 10% to 20% also leads to an increase in pressure rate, reaching an earlier peak, and the combustion process occurs faster.

KEYWORDS:

• CVCC
• diesel fuel
• pressure
• burning process

Disclosure statement

No potential conflict of interest was reported by the author(s).

Author contributions

Nguyen Phi Truong: Software, Data curation, Methodology, Writing-review & editing, Nguyen Xuan Khoa: Formal analysis, editing, Formal analysis; Nguyen Van Tuan: Data curation, Methodology, Writing-review & editing, Investigation, Formal analysis, Writing-original draft. All authors have read and agreed to the published version of the manuscript.

Data availability statement

Authors agree to make data and materials supporting the results or analyses presented in their paper available upon reasonable request.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

The author(s) reported there is no funding associated with the work featured in this article.

Notes on contributors

Nguyen Phi Truong

Nguyen Phi Truong received his M.S. in Mechanical Engineering from Ha Noi University of Industry, Viet Nam 2015. He then received his Ph.D. from Hanoi University of Science and Technology, Vietnam, in 2022. Dr. Truong is a researcher at the Hanoi University of Industry in Vietnam. Dr. Truong’s research interests include internal combustion engines, alternative fuels, and thermodynamics.

Nguyen Xuan Khoa

Nguyen Xuan Khoa received his M.S. degree in Mechanical Engineering from Kanazawa University, Japan 2010. He then received his Ph.D. from Ulsan University, South Korea, in 2021. Dr. Khoa is a researcher at the Hanoi University of Industry in Vietnam. Dr. Khoa’s research interests include internal combustion engines, alternative fuels, and thermodynamics.

Nguyen Van Tuan

Nguyen Van Tuan received a Master’s in Dynamics Engineering from Hanoi University of Science and Technology, Vietnam 2008. Then, he received a Ph.D. from Le Quy Don Technical University, Vietnam, in 2015. Dr. Tuan is a lecturer and researcher at the University of Transport Technology, Vietnam. Dr. Tuan’s research interests include internal combustion engines, alternative fuels, thermodynamics, and hybrid and electric cars.