In:
International Journal of Engine Research, SAGE Publications, Vol. 17, No. 4 ( 2016-04), p. 413-420
Abstract:
With the objective of enhancing the effectiveness of late fuel injection strategy in extending the low-load limit of homogeneous charge compression ignition engines, a numerical study is conducted to investigate the effects of fuel injection parameters, such as the injection pressure and spray cone angle, on the overall combustion efficiency and CO/NO x emissions. Closed-cycle engine simulations are performed incorporating detailed iso-octane reaction kinetics and combustion submodel based on the spray-interactive flamelet approach. Extensive parametric studies are conducted to provide a detailed map of the combustion efficiency and emission performance. In general, it is found that the in-cylinder charge stratification can be reduced by both an increased injection pressure and a wider spray cone angle, resulting in substantially lower NO x emissions and reasonably high combustion efficiency simultaneously. The present study demonstrates that an optimal adjustment of the two fuel injection parameters can result in significant extension of the low-load limit of homogeneous charge compression ignition through delayed fuel injection strategy.
Type of Medium:
Online Resource
ISSN:
1468-0874
,
2041-3149
DOI:
10.1177/1468087415583597
Language:
English
Publisher:
SAGE Publications
Publication Date:
2016
detail.hit.zdb_id:
2030603-9
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