Relationship Between Monochromatic Gas Radiation Characteristics and SI Engine Combustion Parameters

Paper #:
  • 930216

Published:
  • 1993-03-01
Citation:
Yang, J., Plee, S., and Remboski, D., "Relationship Between Monochromatic Gas Radiation Characteristics and SI Engine Combustion Parameters," SAE Technical Paper 930216, 1993, https://doi.org/10.4271/930216.
Pages:
14
Abstract:
Relationships between radiant emissions, as measured by an in-cylinder optical sensor, and spark-ignition engine combustion parameters are presented for possible use in engine combustion diagnostics and future engine control strategies. A monochromatic gas radiation model, developed in a previous study, was used to derive a series of relationships between the measured radiant emission characteristics and several spark-ignition engine combustion parameters, such as the amplitude and phasing of the peak heat-release rate, combustion duration, IMEP, NOx emission, pressure, trapped mass and exhaust-gas temperature. In addition, many engine parameters of interest can be estimated indirectly from the radiation signal using empirical models. Correlations of air-fuel ratio and exhaust emissions are presented which contain a combination of radiant emission parameters and known base-engine operating parameters, such as intake manifold pressure, etc.
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