714 An Analysis of Swirl Injector Sprays by Using PIV and Its Application to Injector Design
Details
A new technique using particle image velocimetry (PIV) has been developed to measure the spray flow velocity fields of swirl injectors used in direct-injection gasoline engines. This method facilitates measurement of flow velocities at the nozzle exit, which were difficult to measure in the past. The technique was used to measure nozzle exit flow velocities of various nozzles designed with different parameters. The results were compared with data obtained with a conventional potential method, known as Tanasawa's equation. As a result, the accuracy of the nozzle design was improved.
