Experimental and Numerical Investigations of Tumble Motion on an Optical Single Cylinder Engine

Paper #:
  • 2015-01-1698

Published:
  • 2015-04-14
DOI:
  • 10.4271/2015-01-1698
Citation:
Rathinam, B., Ravet, F., Servant, C., Delahaye, L. et al., "Experimental and Numerical Investigations of Tumble Motion on an Optical Single Cylinder Engine," SAE Technical Paper 2015-01-1698, 2015, doi:10.4271/2015-01-1698.
Pages:
11
Abstract:
This paper is focused on the experimental and numerical investigation of tumble motion on a single cylinder optical engine on three important parameters like engine load conditions, engine speed and level of tumble. Experiments are conducted in an optical engine and the velocity fields are measured with the aid of advanced particle image velocimetry (PIV) measurement technique. For simulation, multiple cases were considered to develop the numerical process for transient in-cylinder aerodynamics to capture the tumble motion and turbulence level in a Spark Ignited (SI) engine. The simulation results, velocity fields of each case were directly compared with the corresponding test results for different crank positions of the engine. On comparison, a good agreement between the measurement and the simulation is obtained for different configurations.
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