Heat Transfer, Knock Modeling and Cyclic Variability in a "Downsized" Spark-Ignition Turbocharged Engine
Year: 2011
Author: Fabio Bozza, Daniela Siano, Michela Costa
Advances in Applied Mathematics and Mechanics, Vol. 3 (2011), Iss. 3 : pp. 310–326
Abstract
In the present paper a combined procedure for the quasi-dimensional modelling of heat transfer, combustion and knock phenomena in a "downsized" Spark Ignition two-cylinder turbocharged engine is presented. The procedure is extended to also include the effects consequent the Cyclic Variability. Heat transfer is modelled by means of a Finite Elements model. Combustion simulation is based on a fractal description of the flame front area. Cyclic Variability (CV) is characterized through the introduction of a random variation on a number of parameters controlling the rate of heat release (air/fuel ratio, initial flame kernel duration and radius, laminar flame speed, turbulence intensity). The intensity of the random variation is specified in order to realize a Coefficient Of Variation (COV) of the Indicated Mean Effective Pressure (IMEP) similar to the one measured during an experimental campaign. Moreover, the relative importance of the various concurring effects is established on the overall COV. A kinetic scheme is then solved within the unburned gas zone, characterized by different thermodynamic conditions occurring cycle-by-cycle. In this way, an optimal choice of the "knock-limited" spark advance is effected and compared with experimental data. Finally, the CV effects on the occurrence of individual knocking cycles are assessed and discussed.
You do not have full access to this article.
Already a Subscriber? Sign in as an individual or via your institution
Journal Article Details
Publisher Name: Global Science Press
Language: English
DOI: https://doi.org/10.4208/aamm.10-10s2-04
Advances in Applied Mathematics and Mechanics, Vol. 3 (2011), Iss. 3 : pp. 310–326
Published online: 2011-01
AMS Subject Headings: Global Science Press
Copyright: COPYRIGHT: © Global Science Press
Pages: 17
Keywords: Finite elements in heat transfer internal combustion engines modelling cyclic variability knock.
Author Details
-
Knocking combustion in spark-ignition engines
Wang, Zhi | Liu, Hui | Reitz, Rolf DProgress in Energy and Combustion Science, Vol. 61 (2017), Iss. P.78
https://doi.org/10.1016/j.pecs.2017.03.004 [Citations: 578] -
Invited Review: Development of a one-dimensional computational fluid dynamics modeling approach to predict cycle-to-cycle variability in spark-ignition engines based on physical understanding acquired from large-eddy simulation
Richard, Stéphane | Dulbecco, Alessio | Angelberger, Christian | Truffin, KarineInternational Journal of Engine Research, Vol. 16 (2015), Iss. 3 P.379
https://doi.org/10.1177/1468087414560592 [Citations: 20] -
Numerical simulation of the effects of the EGR ratio and ignition timing on a supercharged and high compression ratio hybrid gasoline engine
Zhang, Zhongjie | Zheng, ZhaoleiFuel, Vol. 341 (2023), Iss. P.127695
https://doi.org/10.1016/j.fuel.2023.127695 [Citations: 7] -
Handbook of Clean Energy Systems
Spark Ignition Engines: State‐of‐the‐Art and Current Technologies. Future Trends and Developments
Cipolla, Giovanni | Bozza, Fabio2015
https://doi.org/10.1002/9781118991978.hces078 [Citations: 2] -
Advances in Ceramic Matrix Composites
Using finite element analysis (FEA) to understand the mechanical properties of ceramic matrix composites
Choi, A.H. | Heness, G. | Ben-Nissan, B.2014
https://doi.org/10.1533/9780857098825.2.286 [Citations: 3] -
Study of water injection on suppressing knock in a high compression ratio and supercharged hybrid gasoline engine
Liu, Zuowen | Zhang, Zhongjie | Rao, Shunlu | Zheng, ZhaoleiEnergy, Vol. 287 (2024), Iss. P.129702
https://doi.org/10.1016/j.energy.2023.129702 [Citations: 2] -
Investigation on the Potential of Quantitatively Predicting CCV in DI-SI Engines by Using a One-Dimensional CFD Physical Modeling Approach: Focus on Charge Dilution and In-Cylinder Aerodynamics Intensity
Dulbecco, Alessio | Richard, Stephane | Angelberger, ChristianSAE International Journal of Engines, Vol. 8 (2015), Iss. 5 P.2012
https://doi.org/10.4271/2015-24-2401 [Citations: 2] -
Advances in Ceramic Matrix Composites
Using finite element analysis to understand the mechanical properties of ceramic matrix composites
Choi, Andy H. | Heness, Greg | Ben-Nissan, Besim2018
https://doi.org/10.1016/B978-0-08-102166-8.00016-5 [Citations: 1]