Lean engine efficiency: Final report, November 1980-January 1987

This report deals with studies of the combustion and flame propagation which occurs inside a spark ignition internal combustion engine. The research performed has had three main points of focus. The first focus was to develop a methodology for understanding of the turbulent processes which govern the rate of flame propagation in the engine. The second focus is the study of the knock process. The third focus is the numerical computation of solutions to the Navier Stokes equations using discrete vortex methods.