Spray Characteristics of New Generation Multi-hole Injector for Spark-ignition Gasoline Engines with Direct Fuel Injection

This paper discusses the spray characteristics of a new generation multi-hole injector for spark-ignition gasoline engines with direct fuel injection (DISI) and homogeneous combustion system. In order to satisfy the design request of combustion system, numerical simulates the liquid spray progress using currency commences star-cd code. In the work, the injection pulse rule is kept almost constant. But the investigation parameters are varied categorical in different steps for each parameter (fuel pressures, fuel temperature, air pressure, air temperature and swirl). Deeply research the spray parameters (spray penetration, sauter mean diameter (SMD) and evaporated rate) in every work condition.