Design for an Optically Accessible Multicylinder High Performance GDI Engine

Paper #:
  • 2011-24-0046

Published:
  • 2011-09-11
Citation:
Catapano, F., Sementa, P., and Vaglieco, B., "Design for an Optically Accessible Multicylinder High Performance GDI Engine," SAE Technical Paper 2011-24-0046, 2011, https://doi.org/10.4271/2011-24-0046.
Pages:
12
Abstract:
In this paper, the modifications realized to make optically accessible a commercial high performance spark ignition and direct injection (DI) 4-cylinder engine are reported. The engine has been designed trying to keep as much as possible its thermo-fluid dynamic configuration in order to maintain its performance and emissions. Two optical accesses have been realized in order to interfere as little as possible with the combustion chamber geometry. A first optical access has been achieved in the piston head and a second by inserting an endoscopic fiber probe in the head. Preliminary results demonstrated that this optical assessment responds to the design targets and allowed a characterization of a commercial GDI engine working with homogeneous and stratified charge mode.
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