September 10, 2025Engineering Research Express

Computational Fluid Dynamics Analysis of Combustion Characteristics in a Direct-Injection Engine with Varying Swirl Ratios and Hydrogen Addition

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Increasing swirl ratio significantly raises peak cylinder temperature and affects emissions.
A swirl ratio increase from 1.4 to 4.1 resulted in a 12.06% rise in cylinder temperature and an 8.7% increase in nitrogen oxide emissions.
Numerical simulation with CFD was conducted to explore the interactions of swirl ratios and hydrogen addition on combustion characteristics.
These findings suggest that optimized conditions can enhance engine performance and promote cleaner energy solutions.

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Implication

Numerical simulation showed optimized swirl ratios improve combustion efficiency and reduce emissions in direct-injection engines, indicating hydrogen's potential as a clean fuel.

Cite This Study

Gupta et al. (2025) studied this question.

synapsesocial.com/papers/68c23a74b210217d6478106b https://doi.org/10.1088/2631-8695/ae0269

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Implication

Numerical simulation showed optimized swirl ratios improve combustion efficiency and reduce emissions in direct-injection engines, indicating hydrogen's potential as a clean fuel.

Computational Fluid Dynamics Analysis of Combustion Characteristics in a Direct-Injection Engine with Varying Swirl Ratios and Hydrogen Addition

Key Points

Discussion

Implication

Cite This Study

Computational Fluid Dynamics Analysis of Combustion Characteristics in a Direct-Injection Engine with Varying Swirl Ratios and Hydrogen Addition

Key Points

Discussion

Implication

Cite This Study

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