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Communication Dans Un Congrès Année : 2017

Near-Field Velocity Measurement of a Multihole GDI Injector


This work focuses on the experimental measurements of the spray velocity in the near-nozzle field of a commercial GDI injector at two injection pressures: 5 MPa and 10 MPa. Two regions were investigated by means of backlight imaging technique: the jet periphery (dilute region) within 10 orifice diameter; and dense region within 30 orifice diameter. Two cross-correlation algorithms were used: an in-house algorithm, applied to the dilute region, while a standard PIV algorithm was applied to the dense region. It yields that with a careful setting of the parameters, both algorithms were highly precise: less than 1.2% error in the dilute region and 3% in the dense region. Moreover, the consistency between both methods is proved by comparing measurements in regions where both techniques give suitable results.
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Dates et versions

hal-03583834 , version 1 (22-02-2022)


  • HAL Id : hal-03583834 , version 1


Yujun Cao, J.B. Blaisot, Saïd Idlahcen, Corine Lacour. Near-Field Velocity Measurement of a Multihole GDI Injector. SIA Powertrain, Jun 2017, Versailles, France. ⟨hal-03583834⟩
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