Operating Characteristics of a Spark-Ignition Engine Using Hydrogen and Ammonia 2023-32-0105
In this research, the operating characteristics of a spark-ignition engine using ammonia were evaluated. Different compression ratios and two pistons with different squish velocities were used. Results show that the combustion duration was shortened with high compression ratio and high squish piston, and the stable operation range of the engine was expanded. BMEP and brake thermal efficiency did not change significantly among the stable operation range for variations of compression ratio, squish velocity. Due to the reduction effect of unburned ammonia, NOx emissions decreased when ammonia mole fraction increased. Most of the unburned ammonia was emitted from the quenching layer.
Author(s):
Aya Ichikawa, Masamichi Sekine, Takumi Hara, Juan C. González Palencia, Mikiya Araki, Seiichi Shiga, Shinji Kambara
Affiliated:
Division of Mechanical Science and Technology, Gunma Univers, Ota Technical College, Department of Chemistry and Biomolecular Science, Gifu Unive
Pages: 6
Event:
2023 JSAE/SAE Powertrains, Energy and Lubricants International Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Spark ignition engines
Nitrogen oxides
Combustion and combustion processes
Engines
Pistons
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