Direct Injection Hydrogen Combustion in a Spark-Ignition Engine at Different Engine Speeds

Abstract

Hydrogen is an alternative fuel that offers a more sustainable solution with less environmental impact. Hydrogen combustion in internal combustion engines is currently considered as an option because the operation of internal combustion engines is more affordable, simple, and durable. This study aims to identify injection strategies for optimal efficiency and evaluate the performance of a spark-ignition engine at different engine speeds. Computational Fluid Dynamics (CFD) simulations were used to examine the effects of direct injection of hydrogen in a spark ignition hydrogen engine. The study describes the properties of hydrogen, analyzes combustion strategies in spark-ignition engines, and sets objectives to understand the causes of abnormal combustion. The research approach involves simulation methods using Converge CFD software based on a direct hydrogen injection engine parameter. The study focuses on fuel injection pressure and engine speed as manipulated variables to achieve optimal engine combustion. The results are analyzed along with previous studies to validate the model. The findings indicate that an injection pressure of 10 MPa and an engine speed of 1200 RPM achieve optimal hydrogen combustion for the four-stroke engine model. These findings provide a deep understanding of the development and advancements in using this strategy.