Abstract
This paper is the reports of operation test using water-emulsified fuel. We used a high-speed diesel engine with 250mm-cylinder bore, 250mm-piston stroke.
Tests were carried out varying the water-content of emulsion (0-90%) and the dimension of a fuel pump (22-26mm) consequently, following results are obtained.
(1) Fuel consumption is improved by adding water to fuel oil.
(2) The injection pressure of water-emulsified fuel rises linearly in proportion to water-content.
(3) The temperature of the cylinder liner rises linearly in proportion to water-content.
(4) NOx decreases linearly in proportion to water-content.
(5) The reduction rate of NOx or fuel consumption by water-content is independent of the dimensions of a fuel injection system.
