Methodological Approach for 1D Simulation of Port Water Injection for Knock Mitigation in a Turbocharged DISI Engine
| Autor: | Luciano Rolando, Fabrizio Gullino, Federico Millo |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Control and Optimization
Computer science 020209 energy Automotive industry Energy Engineering and Power Technology 02 engineering and technology knock mitigation lcsh:Technology Automotive engineering law.invention 0203 mechanical engineering law Combustion process turbocharged gasoline engine port water injection predictive combustion model engine performance virtual test rig 0202 electrical engineering electronic engineering information engineering Water injection (engine) Electrical and Electronic Engineering Engineering (miscellaneous) lcsh:T Renewable Energy Sustainability and the Environment business.industry Ignition system 020303 mechanical engineering & transports business Energy (miscellaneous) Turbocharger |
| Zdroj: | Energies, Vol 13, Iss 4297, p 4297 (2020) Energies; Volume 13; Issue 17; Pages: 4297 |
| Popis: | In the upcoming years, more challenging CO2 emission targets along with the introduction of more severe Real Driving Emissions limits are expected to foster the development and the exploitation of innovative technologies to further improve the efficiency of automotive Spark Ignition (SI) engines. Among these technologies, Water Injection (WI), thanks to its knock mitigation capabilities, can represent a valuable solution, although it may significantly increase the complexity of engine design and calibration. Since, to tackle such a complexity, reliable virtual development tools seem to be mandatory, this paper aims to describe a quasi-dimensional approach to model a Port Water Injection (PWI) system integrated in a Turbocharged Direct Injection Spark Ignition (T-DISI) engine. Through a port-puddling model calibrated with 3D-CFD data, the proposed methodology was proven to be able to properly replicate transient phenomena of water wall film formation, catching cycle by cycle the amount of water that enters into the cylinder and is therefore available for knock mitigation. Moreover, when compared with experimental measurements under steady state operating conditions, this method showed good capabilities to predict the impact of the water content on the combustion process and on the knock occurrence likelihood. |
| Databáze: | OpenAIRE |
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