In:
Thermal Science, National Library of Serbia, , No. 00 ( 2023), p. 58-58
Abstract:
Spark-assisted compression ignition (SACI) is a potential way to improve
thermal efficiency for gasoline engine with a relatively low compression
ratio. The dual-injection system and spark strategy are considered to be an
effective approach to control the combustion of SACI engine.
Polyoxymethylene dimethyl ethers (PODE) is a potential fuel for carbon
neutral with high oxygen content and unique molecule structure. In this
study, the transition of combustion modes with different equivalence ratio
and effects of direct injection (DI) ratio on SACI combustion and emissions
fueled with PODE/gasoline under different loads were investigated. The
results showed that SACI combustion could be achieved with the compression
ratio of 13 and the brake thermal efficiencies (BTEs) at 2 bar, 3 bar and 4
bar under the dual-fuel SACI were increased by 49%, 29% and 27%,
respectively, compared with the gasoline spark ignition mode. The increase
in DI ratio first shortened the combustion duration and then prolonged. An
appropriate DI ratio was shown to control the combustion process to achieve
high efficiency combustion, at which Low THC, CO and PM emissions were
achieved while the NOx emissions remained at a low level.
Type of Medium:
Online Resource
ISSN:
0354-9836
,
2334-7163
DOI:
10.2298/TSCI220109058Z
Language:
English
Publisher:
National Library of Serbia
Publication Date:
2023
detail.hit.zdb_id:
2241319-4
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