Autoren

Phillip THORAU¹, Karsten STENZEL¹, Christian REISER¹, Bert BUCHHOLZ^2 
1WTZ Roßlau gGmbH, Dessau-Roßlau, DE; ² LKV / Universität Rostock, DE

Zusammenfassung

In recent years, the combustion of ammonia in internal combustion engines has attracted a lot of attention due to its potential to reduce greenhouse gas emissions. However, one of the biggest challenges of using ammonia as a fuel is the formation of pollutants, particularly nitrogen oxides (NO_x), nitrogen dioxide and unburnt ammonia. High pressure injection of liquid ammonia has proven to be a promising solution to mitigate these problems, as it offers the potential for more stable combustion and lower emissions by providing high fuel conversion ratios typical of diesel and diffusion-controlled combustion. In this paper, various aspects of high-pressure ammonia dual-fuel combustion are investigated. Various spray configurations are analysed, with a particular focus on the influence of spray interaction. In addition, factors such as piston geometry and the injection strategy are investigated to understand their effects on the spray behaviour and the combustion process. Another focus is the investigation of the influence of the variation of engine operating parameters that affect the combustion process. The aim of this study is to develop a better understanding of the complex interactions between spray behaviour, operating conditions and the combustion process in dual-fuel systems to optimize combustion.

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