Application of a hybrid breakup model for the spray simulation of a multi-hole injector used for a DISI gasoline engine

Adapting diesel large-eddy simulation spray models for direct-injection spark-ignition applications

“…Recent in-nozzle flow simulations of multi-hole DISI injectors show spray structures that do not correspond to typical diesel sprays, including hydraulic flip and atomization at the nozzle exit. [41][42][43] Other researchers simulating DISI sprays using a RANS turbulence model 40,[44][45][46][47][48][49] have modified their drop initialization, typically specifying an initial dropsize distribution, and it may be that this type of change to the spray initialization procedures is necessary to further improve the accuracy of DISI spray models in either a RANS or LES context. Further work is necessary to better understand how DISI sprays form, how the in-nozzle processes may be affecting the downstream atomization, and how this information is best incorporated into DISI break-up models.…”

Power losses and dynamic response analysis of ultra-high speed solenoid injector within different driven strategies

“…In this investigation, the friction force is ignored, because of the tiny influence compared with other forces. Therefore the kinematics equation can be described by Newton's dynamic equilibrium equations, which include fluid-dynamic force, spring force and gravity as well as electromagnetic forces [21].…”

Effects of turbulence enhancement on combustion process using a double injection strategy in direct-injection spark-ignition (DISI) gasoline engines

“…There is the potential to increase thermal efficiency through stratified-charge combustion strategy at part loads and to improve engine performance through charge cooling effect at full load (Li et al, 2014). Since the fuel is injected into the cylinder directly, many injection strategies can be applied to increase engine performance.…”

“…Effects of injection pressure and injection timing on equivalence ratio distribution in combustion chamber and local air-fuel ratio near spark plug were investigated. Li et al (2014) developed hybrid atomization and breakup model for multi-hole DISI gasoline injector. They concluded that Huh-G osman-KH-RT hybrid spray model was successfully implemented to predict DISI gasoline spray characteristics.…”