Abstract
This chapter reviews and discusses the recent development in Lean Direct Injection (LDI) combustion technology. An extended definition of LDI is also provided, followed by a broad description of LDI concepts and examples. Recognizing the needs and opportunities to expand the operability range of LDI, fundamental research has been undertaken to elucidate the effects of air swirler vane angle, pressure drop, air swirler rotation direction, and overall equivalence ratio on LDI flow field and flame behavior. Additional investigation was further conducted to understand fundamental differences between representative LDI and airblast injectors. Results of these fundamental studies are discussed to help identify design changes for improving LDI performance.
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Acknowledgements
The authors would like to thank Drs. Xin Xue, Kyle B. Brady, and Xin Hui for their help in the fundamental single-cup experiments.
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Ren, X., Sung, CJ., Mongia, H.C. (2018). On Lean Direct Injection Research. In: Runchal, A., Gupta, A., Kushari, A., De, A., Aggarwal, S. (eds) Energy for Propulsion . Green Energy and Technology. Springer, Singapore. https://doi.org/10.1007/978-981-10-7473-8_1
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