Operating Limits for Ammonia Fuel Spark-Ignition Engine

Christine Mounaïm-Rousselle, Pierre Bréquigny, Clément Dumand and Sébastien Houillé
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Christine Mounaïm-Rousselle: PRISME, University Orléans, INSA-CVL, F-45072 Orléans, France
Pierre Bréquigny: PRISME, University Orléans, INSA-CVL, F-45072 Orléans, France
Clément Dumand: Stellantis—PSA Centre Technique de Vélizy, Vélizy-Villlacoublay, F-78140 Vélizy-Villacoublay, France
Sébastien Houillé: Stellantis—PSA Centre Technique de Vélizy, Vélizy-Villlacoublay, F-78140 Vélizy-Villacoublay, France

Energies, 2021, vol. 14, issue 14, 1-13

Abstract: The objective of this paper is to provide new data about the possibility of using ammonia as a carbon-free fuel in a spark-ignition engine. A current GDI PSA engine (Compression Ratio 10.5:1) was chosen in order to update the results available in the literature mainly obtained in the CFR engine. Particular attention was paid to determine the lowest possible load limit when the engine is supplied with pure ammonia or a small amount of H 2 , depending on engine speed, in order to highlight the limitation during cold start conditions. It can be concluded that this engine can run stably in most of these operating conditions with less than 10% H 2 (of the total fuel volume) added to NH 3 . Measurements of exhaust pollutants, and in particular NOx, have made it possible to evaluate the possibility of diluting the intake gases and its limitation during combustion with pure H 2 under slightly supercharged conditions. In conclusion, the 10% dilution limit allows a reduction of up to 40% in NOx while guaranteeing stable operation.

Keywords: ammonia; SI engine; pollutant; performance (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (6)

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