Ethanol-gasoline is a clean and reproducible fuel with potential of development, the key effects hydrated ethanol- gasoline blends' popularization and application is its stability. Through the test of hydrated ethanol-gasoline'cloud point change, hydrotropy of surfactant and cosolvent were investigated for hydrated ethanol-gasoline blends.The experimental results show that heterogeneous alcohols cosolvent has a better hydrotropy on ethanol- gasoline blends; Multiplex cosolvents is better than a single cosolvent, among whch the combination of isoamyl alcohol and isobutyl alcohol is the best. Emulsifier SP-80 to hydrated ethanol-gasoline has the better hydrotropy than heterogeneous alcohols cosolvent, and with the increased amount of it, the effect is more significant. Emulsifier SP-80 blends with additives isoamyl alcohol has the best effect, with the conditions: when SP-80 volume content is 1.0% and isoamyl alcohol volume content is 1.0%, ethanol and gasoline phase separation temperature dropped to -35.0 ℃.

It dealt with the controller design problem for switched neutral systems with two classes of uncertainties and time-varying delay in a range. Based on the average dwell time method, by choosing a piecewise Lyapunov-Krasovskii functional, delay-range-dependent corresponding sufficient conditions of the feedback delayed controllers were derived in terms of linear matrix inequalities. Moreover, much less conservative results was obtained. The effectiveness of the proposed robust control scheme was demonstrated by simulation examples.