Science & Tech · Science & Environment · 1 hr ago
Kawasaki Heavy Industries cuts NOx emissions in hydrogen engine test
Kawasaki Heavy Industries has tested a small aircraft engine that runs on hydrogen.
The Japanese company says a combustor it developed cut nitrogen oxide emissions by 90% compared with a conventional level.
Nitrogen oxides, or NOx, can form when hydrogen burns at high temperatures.
The combustor splits the hydrogen into many small flames to limit those emissions.
The technology is being developed through a project run by Japan’s New Energy and Industrial Technology Development Organization.
Kawasaki had already succeeded in operating the engine on 100% hydrogen in 2024.
The company aims to use this work to help make hydrogen-powered aircraft practical.
Kawasaki Heavy Industries said it succeeded in a test that cut nitrogen oxide emissions from a small hydrogen-fueled aircraft engine by 90%.
The company used a combustion system it developed to burn hydrogen in many small flames, reducing NOx emissions.
The technology is being developed through a project of Japan’s New Energy and Industrial Technology Development Organization.
The work aims to help make hydrogen-powered aircraft practical in the future.
- Who
- Kawasaki Heavy Industries.
- What
- It succeeded in testing a combustion system that reduced NOx emissions from a hydrogen-fueled aircraft engine by 90%.
- When
- The announcement was reported on October 13, 2026.
- Where
- Not stated.
- Why
- The technology is intended to help make hydrogen-powered aircraft practical.
This story does not have two clearly opposing sides.
Kawasaki Heavy Industries succeeded in operating an engine using 100% hydrogen fuel.
The company announced success in a test that reduced NOx emissions by 90%.
- NOx reduction
- 90% compared with conventional emissions
- Engine
- Small aircraft engine developed by Kawasaki Heavy Industries
- Fuel
- Hydrogen
- Combustion method
- Hydrogen burned in many small flames
- Development program
- New Energy and Industrial Technology Development Organization project
Sources
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