Effect of In-Cylinder Hydrogen Mixture Formation on Hydrogen Combustion Kawasaki Heavy Industries, Limited

Format:

Book

Conference/Event

Author/Creator:

Hisano, Atsushi, author.

Contributor:

Ichi, Satoaki

Saitou, Masahito

Sakurai, Yota

Conference Name:

SETC2025: 29th Small Powertrains and Energy Systems Technology Conference (2025-11-10 : Florence, Italy)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

Global efforts to mitigate climate change include ambitious long-term strategies by countries to achieve net-zero greenhouse gas emissions by 2050. The automotive sector is exploring carbon-free powertrains, with hydrogen emerging as a key technology. Its zero-emission potential positions it for widespread adoption in power generation, transportation, and industry. Hydrogen engines, particularly direct injection engines offering high power and efficiency, are gaining traction due to their adaptability using existing engine components. However, in a hydrogen direct injection engine, achieving proper mixing of hydrogen and air in the cylinder is challenging, making in-cylinder mixture formation a crucial factor for ensuring stable combustion. To predict hydrogen mixture formation in the cylinder, we conducted a Schlieren visualization experiment of the hydrogen jet. Based on the results, a detailed hydrogen jet model for the direct injection injector was developed. This model was then integrated into the in-cylinder analysis, allowing an investigation into the impact of injection timing on hydrogen combustion. Furthermore, hydrogen combustion experiments were carried out using a single-cylinder hydrogen direct injection engine, and the accuracy of the in-cylinder analysis results was validated

Notes:

Vendor supplied data

Publisher Number:

2025-32-0065

Access Restriction:

Restricted for use by site license