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Methodological Approach for 1D Simulation of Port Water Injection for Knock Mitigation in a Turbocharged DISI Engine

Author

Listed:
  • Federico Millo

    (Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)

  • Fabrizio Gullino

    (Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)

  • Luciano Rolando

    (Energy Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy)

Abstract

In the upcoming years, more challenging CO 2 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.

Suggested Citation

  • Federico Millo & Fabrizio Gullino & Luciano Rolando, 2020. "Methodological Approach for 1D Simulation of Port Water Injection for Knock Mitigation in a Turbocharged DISI Engine," Energies, MDPI, vol. 13(17), pages 1-21, August.
    • Handle: RePEc:gam:jeners:v:13:y:2020:i:17:p:4297-:d:401163
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    References listed on IDEAS

    as
    1. Federico Millo & Francesco Accurso & Alessandro Zanelli & Luciano Rolando, 2019. "Numerical Investigation of 48 V Electrification Potential in Terms of Fuel Economy and Vehicle Performance for a Lambda-1 Gasoline Passenger Car," Energies, MDPI, vol. 12(15), pages 1-21, August.
    2. Jacopo Zembi & Michele Battistoni & Francesco Ranuzzi & Nicolò Cavina & Matteo De Cesare, 2019. "CFD Analysis of Port Water Injection in a GDI Engine under Incipient Knock Conditions," Energies, MDPI, vol. 12(18), pages 1-22, September.
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    Cited by:

    1. Thiago Rodrigo Vieira da Silva & Nilton Antonio Diniz Netto & Jeanine Costa Santos & Augusto Cesar Teixeira Malaquias & José Guilherme Coelho Baêta, 2022. "Development Procedure for Performance Estimation and Main Dimensions Calculation of a Highly-Boosted Ethanol Engine with Water Injection," Energies, MDPI, vol. 15(13), pages 1-24, June.
    2. Raul Payri & Pedro Marti-Aldaravi & Rami Abboud & Abian Bautista, 2021. "Numerical Analysis of GDI Flash Boiling Sprays Using Different Fuels," Energies, MDPI, vol. 14(18), pages 1-23, September.

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