ArticleACS omega2026
Effect of Prechamber Design Parameters on Combustion Characteristics, Emission, and Performance of a Methanol Engine.
Article in ACS omega, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors.
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Abstract
Turbulent jet ignition (TJI) is an efficient ignition technology, while the effects of key design parameters on engine performance remain unclear. This study investigates the effects of throat diameter and nozzle number on combustion characteristics, emission, and performance of a methanol engine with TJI. Additionally, the effect of spark timings (STs) on the characteristics of the TJI methanol engine is analyzed. Experimental results show that the in-cylinder pressure decreases, and the ignition delay significantly increases as the throat diameter increases. The engine maintains excellent combustion characteristics and achieves the lowest HC emissions when the throat diameter is 4.5 mm. A prechamber with more nozzles benefits from distributed ignition, resulting in a slightly higher in-cylinder pressure and heat release rate. As the number of nozzles increases, NO
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