Work

Optical Analysis of a Hydrogen Direct-Injection-Spark-Ignition-Engine Using Lateral or Central Injection

Year: 2025

Type: article

Abstract: This paper investigates the abnormal combustion behavior—specifically knock and pre-ignition—of a hydrogen direct-injection (H2-DI) engine operated under stoichiometric conditions. Two different cylinder head configurations with central and lateral injector placement are analyzed using thermodynamic measurements, CFD simulations, and the optical diagnostic system VISIOLution®. The results show that combustion stability and knock tendency are significantly influenced by injector positioning, injection pressure, and ignition timing. Controlled mixture formation and high turbulence during the compression phase are key to achieving both high power density and thermal efficiency in hydrogen-fueled engines.

Source: Energies

DOI: 10.3390/en18225972

Authors: Hermann Sebastian Rottengruber, Dmitrij Wintergoller, Maikel Ebert, Aristidis Dafis

Institution: Otto-von-Guericke-Universität Magdeburg

Language: English

Topic: Advanced Combustion Engine Technologies

Subfield: Fluid Flow and Transfer Processes

Field: Chemical Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: gold

Estimated APC paid: $3,137