1990-09-01

A Combustion Correlation for Spark-Ignition Engine Simulation Under Steady and Transient Conditions 901602

A Spark-ignition combustion correlation is presented that links the fuel burning rate with in-cylinder vaules of temperature, pressure, fuel-air equivalance ratio, speed, ignition timing and residual gas-fraction. The correlation is designed to be used in a multi-cylinder engine simulation to study the influence of manifold, valve, supercharging and turbocharging systems design on performance. It is shown how the correlation permits transient performance predictions for a turbocharged engine.

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