Zobrazeno 1 - 10
of 10
pro vyhledávání: '"Valentina Pessina"'
Autor:
Fabio Berni, Fabio Mortellaro, Valentina Pessina, Stefano Paltrinieri, Francesco Pulvirenti, Vincenzo Rossi, Massimo Borghi, Stefano Fontanesi
In order to reduce development costs and time-to market, 1D and 3D CFD tools can support engine design providing reliable estimations of the tailpipe emissions. In particular, 3D-CFD in-cylinder simulations can evaluate formation of both soot and gas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::912f42c22f5fff947d37029d95d26825
https://hdl.handle.net/11380/1286760
https://hdl.handle.net/11380/1286760
Autor:
Vincenzo De Bellis, Stefano Fontanesi, Francesco Cicci, Valentina Pessina, Alessandro D'Adamo, Fabio Bozza, Fabio Berni, Enrica Malfi, Luigi Teodosio
In recent years, internal combustion engine (ICE) downsizing coupled with turbocharging was considered the most effective path to improve engine efficiency at low load, without penalizing rated power/torque performance at full load. On the other side
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7eaab51c17b59b4349dc9afe6437e45
https://hdl.handle.net/11380/1255844
https://hdl.handle.net/11380/1255844
Soot engine-out emissions are no longer a prerogative of Diesel engines. Emission regulations related to Gasoline units aim to curb the soot emissions along with other pollutants. In this scenario, Computational Fluid Dynamics (CFD) is a very promisi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd717e753687fa89538a79f61e4967eb
https://hdl.handle.net/11380/1239019
https://hdl.handle.net/11380/1239019
Autor:
Massimo Borghi, Valentina Pessina
Publikováno v:
E3S Web of Conferences, Vol 312, p 07007 (2021)
Nowadays, soot emissions are one of the major concerns in Direct Injection Spark Ignition engines. Soot prediction models can be computationally expensive, especially when particle mass, number, and size distribution are to be forecast. While soot fo
Autor:
Stefano Fontanesi, Simone Sparacino, Valentina Pessina, Marco Del Pecchia, Silvana Di Iorio, Adrian Irimescu, Sebastiano Breda
Publikováno v:
SAE technical paper series (2020). doi:10.4271/2020-01-0239
info:cnr-pdr/source/autori:Del Pecchia M.; Sparacino S.; Pessina V.; Fontanesi S.; Breda S.; Irimescu A.; Di Iorio S./titolo:Development of a Sectional Soot Model Based Methodology for the Prediction of Soot Engine-Out Emissions in GDI Units/doi:10.4271%2F2020-01-0239/rivista:SAE technical paper series/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume
info:cnr-pdr/source/autori:Del Pecchia M.; Sparacino S.; Pessina V.; Fontanesi S.; Breda S.; Irimescu A.; Di Iorio S./titolo:Development of a Sectional Soot Model Based Methodology for the Prediction of Soot Engine-Out Emissions in GDI Units/doi:10.4271%2F2020-01-0239/rivista:SAE technical paper series/anno:2020/pagina_da:/pagina_a:/intervallo_pagine:/volume
With the aim of identifying technical solutions to lower the particulate matter emissions, the engine research community made a consistent effort to investigate the root causes leading to soot formation. Nowadays, the computational power increase all
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::65016ab97b4f47ce93cac035b4197855
Publikováno v:
E3S Web of Conferences, Vol 197, p 06012 (2020)
The statistical tendency of a GDI spark-ignition engine to undergo knocking combustion as a consequence of spark timing variation is numerically investigated. In particular, attention is focused on the importance to match combustion-relevant and knoc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::556da0b9e8b6d2f413a0ef2e3ed31972
https://hdl.handle.net/11380/1254241
https://hdl.handle.net/11380/1254241
Autor:
Stefano Fontanesi, Valentina Pessina, Pedro Teixeira Lacava, Clara Iacovano, Alessandro D'Adamo, Santiago Martinez
Publikováno v:
SAE Technical Paper Series.
Publikováno v:
SECOND INTERNATIONAL CONFERENCE ON MATERIAL SCIENCE, SMART STRUCTURES AND APPLICATIONS: ICMSS-2019.
Nowadays, most of the engineering development in the field of Spark-Ignited (SI) Internal Combustion Engines (ICEs) is supported by 3D-CFD simulations relying on flamelet combustion models. Such kind of models require laminar flame speed as an input
Publikováno v:
E3S Web of Conferences, Vol 312, p 07003 (2021)
Hydrogen-fueled internal combustion engines (H2ICEs) are capable of operating over a wide range of equivalence ratios: from ultra-lean mode to stoichiometric conditions. However, they provide maximum thermal efficiency and minimum NOx emissions if op
Publikováno v:
E3S Web of Conferences, Vol 197, p 06009 (2020)
Emission modelling is still a timely topic in the engine research community. Soot emission reduction has gained its spotlight among the pollutants-related issues mainly due to the renewed interest in Gasoline Direct Injection. The conjunction of expe