IC Engine Air/Fuel Ratio Feedback Control During Cold Start 961022

This paper presents a method for air/fuel ratio control using combustion pressure feedback during cold start to be used as an aid in laboratory experiments. The effects of varying air/fuel ratio during cold start are so profound that small differences in air/fuel ratio can create effects that will mask the effects of significant changes in other variables. The ability to control air/fuel ratio is an important aid in comprehensive emission studies during cold start. This work will facilitate future studies of cold start emissions.


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