0000000000739459
AUTHOR
Yujun Cao
On the design of novel access and methodology for optical diagnostics inside internal combustion engines under severe operating conditions
International audience; Fluid Dynamic Processes in Direct Injection Engines and this anniversary is wortha celebration! It indicates that THIESEL has acquired over the past 20 years aconsolidated position as a meeting point between industry, research institutionsand academia involved in R&D for automotive engines. And naturally, it strives toremain a reference forum for the next 20 years.True, combustion engines are widely unpopular nowadays and manufacturersface even tougher environmental challenges. However, no doubt combustionengines will remain the main propulsion system in transport for the next 20 to 50years, at least for as long as alternative solutions cannot provide the flexibility…
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 consisten…