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Knock prediction for dual fuel engines by using a simplified combustion model
Shao-mei Fei1, Zhen-tao Liu, Zhao-da Yan
1College of Mechanical and Energy Engineering, Zhejiang University, Hangzhou 310027, China. shaomeif@cmee.zju.edu.cn
Journal of Zhejiang University. Science
|September 6, 2003
Summary
A simplified combustion model was developed to predict engine knock in dual fuel engines using a detailed methane-air kinetics scheme. The model accurately predicted natural gas operation across various conditions, validating its effectiveness.
Area of Science:
- Combustion chemistry
- Engine engineering
- Chemical kinetics
Background:
- Engine knock is a significant issue in dual fuel engines, impacting performance and efficiency.
- Accurate prediction of knock requires detailed understanding of combustion processes.
Purpose of the Study:
- To develop a simplified combustion model for predicting knock in dual fuel engines.
- To validate the model's performance using natural gas operation data.
Main Methods:
- Utilized a methane-air mixture chemical kinetics scheme with 119 elementary reaction steps and 41 chemical species.
- Developed a simplified combustion model based on the detailed kinetics scheme.
- Compared model predictions with experimental data over a broad range of operating conditions.
Main Results:
- The simplified combustion model accurately predicted knock phenomena in dual fuel engines.
- Calculated values for natural gas operation showed good agreement with experimental results.
- The model demonstrated reliability across a wide range of operating conditions.
Conclusions:
- The developed simplified combustion model is effective for predicting knock in dual fuel engines.
- The model provides a valuable tool for optimizing dual fuel engine performance and efficiency.
- Further research can explore model application to other fuel mixtures and engine types.