Individual Cylinder Combustion Optimization to Improve Performance and Fuel Consumption of a Small Turbocharged SI Engine

Luca Marchitto, Cinzia Tornatore and Luigi Teodosio
Additional contact information
Luca Marchitto: Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili-CNR-via Marconi, 4-80125 Napoli, Italy
Cinzia Tornatore: Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili-CNR-via Marconi, 4-80125 Napoli, Italy
Luigi Teodosio: Istituto di Scienze e Tecnologie per l’Energia e la Mobilità Sostenibili-CNR-via Marconi, 4-80125 Napoli, Italy

Energies, 2020, vol. 13, issue 21, 1-21

Abstract: Stringent exhaust emission and fuel consumption regulations impose the need for new solutions for further development of internal combustion engines. With this in mind, a refined control of the combustion process in each cylinder can represent a useful and affordable way to limit cycle-to-cycle and cylinder-to-cylinder variation reducing CO 2 emission. In this paper, a twin-cylinder turbocharged Port Fuel Injection–Spark Ignition engine is experimentally and numerically characterized under different operating conditions in order to investigate the influence of cycle-to-cycle variation and cylinder-to-cylinder variability on the combustion and performance. Significant differences in the combustion behavior between cylinders were found, mainly due to a non-uniform effective in-cylinder air/fuel (A/F) ratio. For each cylinder, the coefficients of variation (CoVs) of selected combustion parameters are used to quantify the cyclic dispersion. Experimental-derived CoV correlations representative of the engine behavior are developed, validated against the measurements in various speed/load points and then coupled to an advanced 1D model of the whole engine. The latter is employed to reproduce the experimental findings, taking into account the effects of cycle-to-cycle variation. Once validated, the whole model is applied to optimize single cylinder operation, mainly acting on the spark timing and fuel injection, with the aim to reduce the specific fuel consumption and cyclic dispersion.

Keywords: combustion optimization; cylinder-to-cylinder variation; cycle-to-cycle variation; fuel consumption; 0D-1D engine modeling; experiments (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: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/21/5548/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/21/5548/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:21:p:5548-:d:433474

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().