Abstract

The reaction models for auto-ignitions for multi-component hydrocarbons (i.e. gasoline) are important to prevent the knocking in super lean burn automobile engines, but they are not constructed enough due to a lack of experimental ignition delay data. In the present study, the ignition delays for the gasoline surrogates (S5R and S5H) and the real gasolines (SGR and SGH) prepared in Cross-ministerial Strategic Innovation Promotion Program (SIP) were measured in a heated high-pressure shock tube over a wide temperature range at various equivalent ratios and pressures. The simulated calculations were performed to check the validity of the original reaction model that Miyoshi and Sakai have constructed for the gasoline surrogates in SIP. The ignition delays calculated based on the SIP reaction model were in good agreement with the observed ones for not only the gasoline surrogates but also the real gasolines in the wide temperature range including the negative temperature coefficient (NTC) region.