LAPSE

LAPSE:2019.1532
Published Article
LAPSE:2019.1532
Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol
Simona Silvia Merola, Adrian Irimescu, Silvana Di Iorio, Bianca Maria Vaglieco
December 10, 2019
Within the context of ever wider expansion of direct injection in spark ignition engines, this investigation was aimed at improved understanding of the correlation between fuel injection strategy and emission of nanoparticles. Measurements performed on a wall guided engine allowed identifying the mechanisms involved in the formation of carbonaceous structures during combustion and their evolution in the exhaust line. In-cylinder pressure was recorded in combination with cycle-resolved flame imaging, gaseous emissions and particle size distribution. This complete characterization was performed at three injection phasing settings, with butanol and commercial gasoline. Optical accessibility from below the combustion chamber allowed visualization of diffusive flames induced by fuel deposits; these localized phenomena were correlated to observed changes in engine performance and pollutant species. With gasoline fueling, minor modifications were observed with respect to combustion parameters, when varying the start of injection. The alcohol, on the other hand, featured marked sensitivity to the fuel delivery strategy. Even though the start of injection was varied in a relatively narrow crank angle range during the intake stroke, significant differences were recorded, especially in the values of particle emissions. This was correlated to the fuel jet-wall interactions; the analysis of diffusive flames, their location and size confirmed the importance of liquid film formation in direct injection engines, especially at medium and high load.
Keywords
Butanol, direct injection, Gasoline, nanoparticle emissions, optical investigations, spark ignition engine
Suggested Citation
Merola SS, Irimescu A, Di Iorio S, Vaglieco BM. Effect of Fuel Injection Strategy on the Carbonaceous Structure Formation and Nanoparticle Emission in a DISI Engine Fuelled with Butanol. (2019). LAPSE:2019.1532
Author Affiliations
Merola SS: Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy
Irimescu A: Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy
Di Iorio S: Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy
Vaglieco BM: Istituto Motori-Consiglio Nazionale delle Ricerche, 80125 Naples, Italy
[Login] to see author email addresses.
Journal Name
Energies
Volume
10
Issue
7
Article Number
E832
Year
2017
Publication Date
2017-06-22
Published Version
ISSN
1996-1073
Version Comments
Original Submission
Other Meta
PII: en10070832, Publication Type: Journal Article
Record Map
Published Article

LAPSE:2019.1532
This Record
External Link

doi:10.3390/en10070832
Publisher Version
Download
Files
[Download 1v1.pdf] (5.5 MB)
Dec 10, 2019
Main Article
License
CC BY 4.0
Meta
Record Statistics
Record Views
72
Version History
[v1] (Original Submission)
Dec 10, 2019
 
Verified by curator on
Dec 10, 2019
This Version Number
v1
Citations
Most Recent
This Version
URL Here
http://psecommunity.org/LAPSE:2019.1532
 
Original Submitter
Calvin Tsay
Links to Related Works
Directly Related to This Work
Publisher Version