1990 Volume 52 Issue 1 Pages 11-21
It is useful to allow a lower proof ethanol to be utilized as a diesel engine fuel by fumigation. This is because hydrated ethanol costs much less per unit of energy produced than does anhydrous ethanol. The objective of this study was to investigate the effects of ethanol proof on general engine performance of a diesel engine in terms of brake horsepower, brake specific heat consumption, combustion stability and NOx emission.
In case of adopting the optimal injection timing of diesel fuel, it was found that the water content in ethanol up to 40w-% showed only a small difference in the brake specific heat consumption as compared with the anhydrous ethanol. The combustion stability for the water content 60w-% was much lower than for the anhydrous ethanol. However, it was also clear that the combustion stability for the water content 60w-% was improved by preheating the air up to 50°C, and the water content 60w-% produced 50% less NOx than the anhydrous ethanol.
