COMBUSTION PARAMETER ADJUSTING METHOD AND DEVICE FOR ENGINE USING ETHANOL FUEL

摘要

A combustion parameter adjusting method for an engine using a ethanol fuel comprises: S11, acquiring first combustion parameter values of an E22 fuel and an E100 fuel under the given working condition; S12, calculating a predicted combustion parameter value of a checked fuel by using an interpolation method formula; S13, acquiring an actual combustion parameter value of the checked fuel under the given working condition; S14, calculating a first difference between the predicted combustion parameter value and the actual combustion parameter value; S15, determining whether the first difference falls within a proper range, if yes, entering step S16, and if not, entering step S17; S16, calculating a predicted combustion parameter value of a target fuel according to the interpolation method formula; and S17, correcting the interpolation method formula, and then entering S12. The combustion parameter adjusting method can ensure combustion performance of an engine. Also provided is a combustion parameter adjusting device for an engine using an ethanol fuel.