This is the last session of this symposium. Thus, I think it is appropriate that the three papers we have heard this afternoon have to do with the application of knowledge to practical problems. The first two papers have been concerned with reduction of pollutants from existing operating systems — the third with reduction of pollutants from experimental laboratory systems. You have heard during the past two days about the relative effects of temperature, time and air-fuel ratio on the formation of oxides of nitrogen. You have heard this afternoon from these three authors how the different investigators have mixed together their witches brew from these three components to come up with a reduction in oxides of nitrogen in practical systems. At the risk of oversimplication I would like to show you two Figures that I think summarize the way in which these three papers have utilized the three tools available to them.


Equivalence Ratio Exhaust Temperature Brake Thermal Efficiency Stirling Engine Adiabatic Flame Temperature 


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© Springer Science+Business Media New York 1972

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  • P. S. Myers

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