Extending ultra-lean burn performance of high compression ratio pre-chamber jet ignition engines based on injection strategy and optimized structure

Wang, Bin; Xie, Fangxi; Wei, Hong; Du, Jiakun; Chen, Hong; Li, Xiaoping

doi:10.1016/j.energy.2023.128433

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Cited by 6 publications

References 48 publications

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Evaluating the Influence of Fuel Compressibility on the Dynamics of the Tractor Diesel Fuel Supply Process

Buzikov,

Motovilova,

Buzikova

2024

Lecture Notes in Mechanical Engineering

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Evaluating the Influence of Fuel Compressibility on the Dynamics of the Tractor Diesel Fuel Supply Process

Buzikov,

Motovilova,

Buzikova

2024

Lecture Notes in Mechanical Engineering

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Improving the partial-load performance and emission of GDI engine by combining injection strategy and exhaust variable valve timing technology

Wang,

Xie,

Duan

et al. 2023

J Braz. Soc. Mech. Sci. Eng.

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Study on the effect of high-pressure methane jet on lean burn laminar flame

Qiu,

Chen,

Lei

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part D:

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High-pressure gas fuel direct injection (HPDI) technology benefits the engine with high efficiency and great output power. During the initial ignition process of the gas fuel jet ignited by the pre-ignition flame, the gas jet interacts with the pre-ignition flame, and causes important effects on the flame propagation and stability. This work aims to investigate the effects of the high-pressure gas fuel (methane) jet on the premixed methane flame with an equivalence ratio of 0.7 in a constant volume bomb (CVB) based on a three-dimensional numerical model. The results indicate that there is a complex interaction between the high-pressure methane jet and the premixed flame. The dominant combustion mode within the CVB changes from the premixed flame surface to the diffusion flame surface, which results in two different combustion behaviors in different regions along the methane jet direction, that is, primary ignition and secondary ignition. The methane jet flame development is divided into three regions, that is, laminar combustion laminar-turbulent combustion, turbulent combustion. Reynolds number of the main region of turbulent combustion ranges within Re = 2300–6000, which means that this flame is a small-scale turbulent flame. These findings contribute to understanding the combustion characteristics under high-pressure direct injection natural gas engine conditions, particularly in lean burn conditions, providing valuable insights for natural gas lean-burn flame stability.

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Extending ultra-lean burn performance of high compression ratio pre-chamber jet ignition engines based on injection strategy and optimized structure

Cited by 6 publications

References 48 publications

Evaluating the Influence of Fuel Compressibility on the Dynamics of the Tractor Diesel Fuel Supply Process

Evaluating the Influence of Fuel Compressibility on the Dynamics of the Tractor Diesel Fuel Supply Process

Improving the partial-load performance and emission of GDI engine by combining injection strategy and exhaust variable valve timing technology

Study on the effect of high-pressure methane jet on lean burn laminar flame

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