A Numerical Methodology for the Design of Active Prechambers in Spark-Ignition Engines
(2023) In Combustion Science and Technology- Abstract
Active prechamber spark-ignition engines are a feasible and effective solution in reducing fuel consumption and pollutant emissions for internal combustion engines. However, reliable and low-cost numerical approaches need to be developed to support and speed-up their industrial design, considering their geometric complexity and the involved multiple-flow length scales. In this work, a computational fluid dynamics (CFD) methodology is presented for the design of active prechambers (APCHs) in spark-ignition engines. It consists of two connected steps. First, the fuel injection process inside the APCH is simulated inside a constant-volume domain, including only the APCH geometry and considering the main chamber (MCH) as boundary condition.... (More)
Active prechamber spark-ignition engines are a feasible and effective solution in reducing fuel consumption and pollutant emissions for internal combustion engines. However, reliable and low-cost numerical approaches need to be developed to support and speed-up their industrial design, considering their geometric complexity and the involved multiple-flow length scales. In this work, a computational fluid dynamics (CFD) methodology is presented for the design of active prechambers (APCHs) in spark-ignition engines. It consists of two connected steps. First, the fuel injection process inside the APCH is simulated inside a constant-volume domain, including only the APCH geometry and considering the main chamber (MCH) as boundary condition. Then, the power-cycle is simulated on the whole closed-valves domain (APCH and MCH). A flame area evolution model is used to describe the flame propagation process. Experimental data from a research single-cylinder heavy-duty engine are used to assess the proposed methodology. Different operating conditions are considered, to evaluate the effects produced by variations of the nozzles diameter, the MCH air/fuel ratio and the load. Satisfactory results were achieved, demonstrating that the proposed methodology is consistent and reliable.
(Less)
- author
- Sforza, Lorenzo ; Lucchini, Tommaso ; D’Errico, Gianluca ; Gianetti, Giovanni ; Beatrice, Carlo and Tunestål, Per LU
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- epub
- subject
- keywords
- Active prechamber, Computational fluid dynamics, Spark-ignition engines, Turbulent jet ignition
- in
- Combustion Science and Technology
- publisher
- Taylor & Francis
- external identifiers
-
- scopus:85161608915
- ISSN
- 0010-2202
- DOI
- 10.1080/00102202.2023.2219450
- language
- English
- LU publication?
- yes
- id
- 62958735-cca6-451b-bc35-3ab0f069ce86
- date added to LUP
- 2023-08-22 15:11:45
- date last changed
- 2023-10-05 14:55:12
@article{62958735-cca6-451b-bc35-3ab0f069ce86,
abstract = {{<p>Active prechamber spark-ignition engines are a feasible and effective solution in reducing fuel consumption and pollutant emissions for internal combustion engines. However, reliable and low-cost numerical approaches need to be developed to support and speed-up their industrial design, considering their geometric complexity and the involved multiple-flow length scales. In this work, a computational fluid dynamics (CFD) methodology is presented for the design of active prechambers (APCHs) in spark-ignition engines. It consists of two connected steps. First, the fuel injection process inside the APCH is simulated inside a constant-volume domain, including only the APCH geometry and considering the main chamber (MCH) as boundary condition. Then, the power-cycle is simulated on the whole closed-valves domain (APCH and MCH). A flame area evolution model is used to describe the flame propagation process. Experimental data from a research single-cylinder heavy-duty engine are used to assess the proposed methodology. Different operating conditions are considered, to evaluate the effects produced by variations of the nozzles diameter, the MCH air/fuel ratio and the load. Satisfactory results were achieved, demonstrating that the proposed methodology is consistent and reliable.</p>}},
author = {{Sforza, Lorenzo and Lucchini, Tommaso and D’Errico, Gianluca and Gianetti, Giovanni and Beatrice, Carlo and Tunestål, Per}},
issn = {{0010-2202}},
keywords = {{Active prechamber; Computational fluid dynamics; Spark-ignition engines; Turbulent jet ignition}},
language = {{eng}},
publisher = {{Taylor & Francis}},
series = {{Combustion Science and Technology}},
title = {{A Numerical Methodology for the Design of Active Prechambers in Spark-Ignition Engines}},
url = {{http://dx.doi.org/10.1080/00102202.2023.2219450}},
doi = {{10.1080/00102202.2023.2219450}},
year = {{2023}},
}