Influence of the radial-lip concept design to achieve ultra-low soot emission reductions: An optical analysis

Article Energy & Fuels

Mixture formation and combustion process analysis of an innovative diesel piston bowl design through the synergetic application of numerical and optical techniques

F. Millo et al.

Summary: The study successfully improved air/fuel mixing and combustion efficiency of diesel engines by designing an innovative piston bowl, achieving faster combustion rates. Results from experiments and numerical simulations demonstrated significant advantages of the innovative piston bowl in terms of air/fuel mixing and combustion processes.

FUEL (2022)

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Article Transportation Science & Technology

Numerical Assessment of Additive Manufacturing-Enabled Innovative Piston Bowl Design for a Light-Duty Diesel Engine Achieving Ultra-Low Engine-Out Soot Emissions

Federico Millo et al.

Summary: The design of diesel engine piston bowls is crucial for optimizing combustion processes and achieving ultra-low soot emissions. A new design featuring a sharp step and radial bumps in the inner bowl rim was developed using additive manufacturing techniques. Computational fluid dynamics models were used to assess the benefits of this hybrid bowl design, demonstrating improved combustion characteristics and reduced soot formation.

SAE INTERNATIONAL JOURNAL OF ENGINES (2022)

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Article Thermodynamics

Soot reduction for cleaner Compression Ignition Engines through innovative bowl templates

Jose Pastor et al.

Summary: This paper evaluates the soot formation and combustion characteristics of a novel piston geometry proposal, called stepped lip-wave, for light-duty engines, and compares it with two other well-known bowl geometries. Results show that the stepped lip-wave piston has better performance in reducing soot emissions and achieving a cleaner energy production system, with higher soot oxidation efficiency during final combustion stages.

INTERNATIONAL JOURNAL OF ENGINE RESEARCH (2021)

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Article Thermodynamics

Effect of a novel piston geometry on the combustion process of a light-duty compression ignition engine: An optical analysis

Jose Pastor et al.

Summary: The study focuses on the experimental verification of the impact of new piston designs on combustion processes, showing that a more intense reverse flow is generated when using wave protrusions inside the bowl, and that stepped lip and wave-stepped lip pistons exhibit faster late cycle oxidation and more near-stoichiometric zones.

ENERGY (2021)

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Article Thermodynamics