Technical Paper
A Study on Cold Startability and Mixture Formation of High-Percentage Methanol Blends
1988-02-01
880044
The poor cold startability is one of the problems in using methanol as the fuel for Otto-type engines. A method for solving this problem is to mix some additives for cold start improvement. The effects of various additives and their concentrations on the improvement of cold startability were studied, and the following results were obtained: (1) The cold startability was studied using actual engines in relation to the preliminary results of cold mixture formation obtained by using an equilibrium air evaporation apparatus. It was found from this study that the cold startability of actual engines shows a high correlation with the excess air ratio of fuel mixture observed using the equilibrium air evaporation apparatus.