In order to reduce the number of experiments and find the best parameter matching,this study employed an orthogonal experimental design method,four levels for each of the four parameters,including isoamyl alcohol mixing ratio,injection advance angle,intake temperature,and scavenging air pressure,were se-lected for simulation tests.The NO mass fraction and indicated power were used as the evaluation indexes of the test,and the orthogonal design was carried out to seek the optimal parameter combinations by using data ex-treme variance analysis.The results showed that the isoamyl alcohol mixing ratio was 40%,fuel injection ad-vance angle was 22.6°,intake temperature was 315.15 K,and scavenging air pressure was 0.233 MPa.With this parameter combination,the following results were obtained:NO mass fraction was 0.011 02%,and indica-ted power was 52.10 kW.So higher isoamyl alcohol mixing ratio could be achieved with less power loss.
维普
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