In-Cylinder Measurements of Residual Gas Concentration in a Spark Ignition Engine

Paper #:
  • 900485

Published:
  • 1990-02-01
Citation:
Galliot, F., Cheng, W., Cheng, C., Sztenderowicz, M. et al., "In-Cylinder Measurements of Residual Gas Concentration in a Spark Ignition Engine," SAE Technical Paper 900485, 1990, https://doi.org/10.4271/900485.
Pages:
9
Abstract:
The residual gas fraction prior to ignition at the vicinity of the spark plug in a single cylinder, two-valve spark ignition engine was measured with a fast-response flame ionization hydrocarbon detector. The technique in using such an instrument is reported. The measurements were made as a function of the intake manifold pressure, engine speed and intake/exhaust valve-overlap duration. Both the mean level of the residual fraction and the statistics of the cycle-to-cycle variations were obtained.
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