Flow Simulation In Hydrogen IC Engine

Abstract

This study investigates the combustion flow of hydrogen gas in a typical spark-ignited truck engine. It uses Solid works Flow Simulation software to calculate engine parameters like pressure and temperature at various piston positions within the cylinder. The simulation employs a simplified geometry with a cylinder head that is flat and a piston that is bowl shaped. Additionally, a lean air-fuel ratio of 34:1 is considered as an input parameter. The research utilizes Computational Fluid Dynamics (CFD) analysis to simulate a single engine cycle with varying spark timing. The analysis plots pressure variations against cylinder length and software iterations. By analyzing the different spark timings and its effect on power output, the study aims to identify the optimal bore size and stroke length for a hydrogen-fueled truck engine. The CFD results align well with estimated calculations. Furthermore, the simulations suggest that the truck's combustion chamber design can potentially support the burning of hydrogen fuel based on the achieved pressure levels.