Abstract
Improving the thermal efficiency of gasoline automobile engines is a very important issue as a measure against global warming. For that purpose, we need to optimize the gasoline fuel so that the high engine performance can be fully exhibited. In the present study, the ignition delay times of light olefins and oxygenated hydrocarbons (assuming biofuels), which can improve knock resistance and expand the lean limit, were measured using a high-pressure shock tube and these chemical effects were discussed. In addition, new gasoline surrogates containing these components appropriately were suggested and their fuel performances were also examined.
