Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines

S. Tonini, M. Gavaises, C. Arcoumanis, G. E. Cossali, M. Marengo

Research output: Contribution to conferencePaper

Abstract

Gasoline sprays from high-pressure multi-hole nozzles for direct injection spark-ignition engines have been simulated using a CFD spray model. Model validation takes place against experimental data available for injection into a constant volume chamber. These include CCD spray images and droplet velocity and diameter measurements obtained with a two-component phase Doppler anemometry (PDA) system at injection pressures up to 200bar and chamber pressures varying from atmospheric to 12bar. An 1-D FIE (Fuel Injection Equipment) hydraulic flow simulation provides the injection rate, while a 3-D and two-phase CFD nozzle flow model predicts the injection velocity increase due to cavitation. Finally, a cavitation-induced atomisation model predicts the droplet size distribution very near the nozzle exit. The subsequent spray development is predicted using the Eulerian-Lagrangian methodology, including for liquid droplet aerodynamic break-up, turbulent dispersion, droplet vaporisation and droplet-to-droplet interaction. Overall, both model predictions and measurements confirmed the advantages of high-pressure multi-hole injectors for gasoline direct-injection engines relative to swirl pressure atomisers, in terms of spray structure independency from chamber thermodynamic and injection operating conditions.

Original languageEnglish
Publication statusPublished - 1 Dec 2006
Event10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006 - Kyoto, Japan
Duration: 27 Aug 20061 Sep 2006

Conference

Conference10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006
CountryJapan
CityKyoto
Period27/08/061/09/06

Fingerprint

Direct injection
Gasoline
Engines
Nozzles
Cavitation
Computational fluid dynamics
Hydraulic equipment
Drop breakup
Atomizers
Fuel injection
Flow simulation
Atomization
Internal combustion engines
Vaporization
Charge coupled devices
Aerodynamics
Thermodynamics
Liquids

Keywords

  • Multi-hole injector
  • Multi-phase flow modelling
  • Spray guided direct-injection gasoline engines

Cite this

Tonini, S., Gavaises, M., Arcoumanis, C., Cossali, G. E., & Marengo, M. (2006). Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines. Paper presented at 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, Kyoto, Japan.
Tonini, S. ; Gavaises, M. ; Arcoumanis, C. ; Cossali, G. E. ; Marengo, M. / Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines. Paper presented at 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, Kyoto, Japan.
@conference{e611c07f36464b1c9d0d7e6bdcca248b,
title = "Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines",
abstract = "Gasoline sprays from high-pressure multi-hole nozzles for direct injection spark-ignition engines have been simulated using a CFD spray model. Model validation takes place against experimental data available for injection into a constant volume chamber. These include CCD spray images and droplet velocity and diameter measurements obtained with a two-component phase Doppler anemometry (PDA) system at injection pressures up to 200bar and chamber pressures varying from atmospheric to 12bar. An 1-D FIE (Fuel Injection Equipment) hydraulic flow simulation provides the injection rate, while a 3-D and two-phase CFD nozzle flow model predicts the injection velocity increase due to cavitation. Finally, a cavitation-induced atomisation model predicts the droplet size distribution very near the nozzle exit. The subsequent spray development is predicted using the Eulerian-Lagrangian methodology, including for liquid droplet aerodynamic break-up, turbulent dispersion, droplet vaporisation and droplet-to-droplet interaction. Overall, both model predictions and measurements confirmed the advantages of high-pressure multi-hole injectors for gasoline direct-injection engines relative to swirl pressure atomisers, in terms of spray structure independency from chamber thermodynamic and injection operating conditions.",
keywords = "Multi-hole injector, Multi-phase flow modelling, Spray guided direct-injection gasoline engines",
author = "S. Tonini and M. Gavaises and C. Arcoumanis and Cossali, {G. E.} and M. Marengo",
year = "2006",
month = "12",
day = "1",
language = "English",
note = "10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006 ; Conference date: 27-08-2006 Through 01-09-2006",

}

Tonini, S, Gavaises, M, Arcoumanis, C, Cossali, GE & Marengo, M 2006, 'Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines' Paper presented at 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, Kyoto, Japan, 27/08/06 - 1/09/06, .

Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines. / Tonini, S.; Gavaises, M.; Arcoumanis, C.; Cossali, G. E.; Marengo, M.

2006. Paper presented at 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, Kyoto, Japan.

Research output: Contribution to conferencePaper

TY - CONF

T1 - Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines

AU - Tonini, S.

AU - Gavaises, M.

AU - Arcoumanis, C.

AU - Cossali, G. E.

AU - Marengo, M.

PY - 2006/12/1

Y1 - 2006/12/1

N2 - Gasoline sprays from high-pressure multi-hole nozzles for direct injection spark-ignition engines have been simulated using a CFD spray model. Model validation takes place against experimental data available for injection into a constant volume chamber. These include CCD spray images and droplet velocity and diameter measurements obtained with a two-component phase Doppler anemometry (PDA) system at injection pressures up to 200bar and chamber pressures varying from atmospheric to 12bar. An 1-D FIE (Fuel Injection Equipment) hydraulic flow simulation provides the injection rate, while a 3-D and two-phase CFD nozzle flow model predicts the injection velocity increase due to cavitation. Finally, a cavitation-induced atomisation model predicts the droplet size distribution very near the nozzle exit. The subsequent spray development is predicted using the Eulerian-Lagrangian methodology, including for liquid droplet aerodynamic break-up, turbulent dispersion, droplet vaporisation and droplet-to-droplet interaction. Overall, both model predictions and measurements confirmed the advantages of high-pressure multi-hole injectors for gasoline direct-injection engines relative to swirl pressure atomisers, in terms of spray structure independency from chamber thermodynamic and injection operating conditions.

AB - Gasoline sprays from high-pressure multi-hole nozzles for direct injection spark-ignition engines have been simulated using a CFD spray model. Model validation takes place against experimental data available for injection into a constant volume chamber. These include CCD spray images and droplet velocity and diameter measurements obtained with a two-component phase Doppler anemometry (PDA) system at injection pressures up to 200bar and chamber pressures varying from atmospheric to 12bar. An 1-D FIE (Fuel Injection Equipment) hydraulic flow simulation provides the injection rate, while a 3-D and two-phase CFD nozzle flow model predicts the injection velocity increase due to cavitation. Finally, a cavitation-induced atomisation model predicts the droplet size distribution very near the nozzle exit. The subsequent spray development is predicted using the Eulerian-Lagrangian methodology, including for liquid droplet aerodynamic break-up, turbulent dispersion, droplet vaporisation and droplet-to-droplet interaction. Overall, both model predictions and measurements confirmed the advantages of high-pressure multi-hole injectors for gasoline direct-injection engines relative to swirl pressure atomisers, in terms of spray structure independency from chamber thermodynamic and injection operating conditions.

KW - Multi-hole injector

KW - Multi-phase flow modelling

KW - Spray guided direct-injection gasoline engines

UR - http://www.scopus.com/inward/record.url?scp=84874694051&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:84874694051

ER -

Tonini S, Gavaises M, Arcoumanis C, Cossali GE, Marengo M. Modelling of spray characteristics from multi-hole injectors for direct-injection gasoline engines. 2006. Paper presented at 10th International Conference on Liquid Atomization and Spray Systems, ICLASS 2006, Kyoto, Japan.