A “Dynamic System” Approach for the Experimental Characterization of a Multi-Hole Spray

Paper #:
  • 2017-24-0106

Published:
  • 2017-09-04
DOI:
  • 10.4271/2017-24-0106
Citation:
Montanaro, A., Allocca, L., Amoresano, A., and Langella, G., "A “Dynamic System” Approach for the Experimental Characterization of a Multi-Hole Spray," SAE Technical Paper 2017-24-0106, 2017.
Pages:
7
Abstract:
The analysis of a spray behavior is confined to study the fluid dynamic parameters such as axial and radial velocity of the droplets, size distribution of the droplets, and geometrical aspect as the penetration length. In this paper, the spray is considered like a dynamic system and consequently it can be described by a number of parameters that characterize its dynamic behavior. The parameter chosen to describe the dynamic behavior is the external cone angle. This parameter has been detected by using an experimental injection chamber, a multi-hole (8 holes) injector for GDI applications and recorded by a high-speed C-Mos camera. The images have been elaborated by a fuzzy logic and neural network algorithm and are processed by using a chaos deterministic theory. This procedure carries out a map distribution of the working point of the spray and determines the stable (signature of the spray) and instable behavior. This approach allows using the acquired information as a first step to define an advanced control of the injection of a GDI system.
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