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Numerical study of engine performance and emissions for port injection of ammonia into a gasolinenethanol dual-fuel spark ignition engine

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Version 2 2024-06-05, 02:41
Version 1 2021-02-19, 08:19
journal contribution
posted on 2024-06-05, 02:41 authored by F Salek, M Babaie, A Shakeri, SV Hosseini, T Bodisco, Ali ZareAli Zare
This study aims to investigate the effect of the port injection of ammonia on performance, knock and NOx emission across a range of engine speeds in a gasoline/ethanol dual-fuel engine. An experimentally validated numerical model of a naturally aspirated spark-ignition (SI) engine was developed in AVL BOOST for the purpose of this investigation. The vibe two zone combustion model, which is widely used for the mathematical modeling of spark-ignition engines is employed for the numerical analysis of the combustion process. A significant reduction of ~50% in NOx emissions was observed across the engine speed range. However, the port injection of ammonia imposed some negative impacts on engine equivalent BSFC, CO and HC emissions, increasing these parameters by 3%, 30% and 21%, respectively, at the 10% ammonia injection ratio. Additionally, the minimum octane number of primary fuel required to prevent knock was reduced by up to 3.6% by adding ammonia between 5 and 10%. All in all, the injection of ammonia inside a bio-fueled engine could make it robust and produce less NOx, while having some undesirable effects on BSFC, CO and HC emissions.

History

Journal

Applied Sciences (Switzerland)

Volume

11

Article number

ARTN 1441

Pagination

1-17

Location

Basel, Switzerland

eISSN

2076-3417

Language

English

Publication classification

C1 Refereed article in a scholarly journal

Issue

4

Publisher

MDPI