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September 16, 2025SAE technical papers on CD-ROM/SAE technical paper series

Influence of Gas Pressure Levels on Injection Timing, Combustion Anomalies, and Emissions of a Hydrogen Gas Engine

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Authors

RRRaphael RößlhuemerFFFelix FellnerPFPatrick Fitz

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Overview

Analysis reveals gas pressure influences combustion anomalies and emission levels in hydrogen engines, indicating improved efficiency is achievable.

Key Points

  • High gas pressure levels enhance injection timing options, reducing combustion anomalies and improving emissions.
  • Investigations show optimal injection timing at higher pressure results in reduced NOx emissions and better engine performance.
  • A single-cylinder hydrogen engine setup allows for comprehensive analysis of volumetric efficiency and emission characteristics.
  • Combustion characteristics are significantly improved by transitioning to a direct injection method under varied gas pressure levels.

Cite This Study

Rößlhuemer et al. (2025) studied this question.

synapsesocial.com/papers/68d4566c31b076d99fa5b87bhttps://doi.org/10.4271/2025-24-0053
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