INVESTIGATION ON COMBUSTION BEHAVIOR OF EXTREMELY LEAN MIXTURES IN A CLOSED BOMB LIKE A GASOLINE ENGINE

Paper #:
  • 2000-01-1423

Published:
  • 2000-01-15
Citation:
Okajima, S., "INVESTIGATION ON COMBUSTION BEHAVIOR OF EXTREMELY LEAN MIXTURES IN A CLOSED BOMB LIKE A GASOLINE ENGINE," SAE Technical Paper 2000-01-1423, 2000, https://doi.org/10.4271/2000-01-1423.
Author(s):
Pages:
10
Abstract:
From the viewpoint of energy saving and air pollution prevention which are needed for development of internal combustion engines, experiments have been carried out to elucidate the true combustion bahavior of extremely lean mixtures in a closed bomb by using the microgravity techniques. Microgravity conditions established in a falling assembly enables the flame propagation and the measurement in lean-limit states. The oscillatory nature of flame propgation appeared in very lean mixtures of propane-air may be explained in term of Lewis number which is less than unity. Turbulence is shown to be ineffective in enhanching the burning velocities and indeed may cause extinction in very lean mixtures.
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