This study conducted the spray analysis for gasoline direct-injection multihole injector. When the injection pressure was changed to 75 bar, 100 bar and 125 bar under atmospheric pressure condition, change in spray penetration length, spray angle, and spray was obtained, which was compared and analyzed with test results. Spray penetration length, spray angle, and spray shape from spray analysis exhibited similar behavior to existing test results. Certain results of spray penetration length had a considerable deviation, which could be result of settings of analytical conditions.

GDI, CFD, injector, penetration length, spray angle.