2000 Volume 43 Issue 1 Pages 82-88
Engine performance and exhaust gas characteristics of a direct injection CI engine were investigated with neat dimethyl-ether (DME), and alternative fuel being considered for attaining low emissions. The study was conducted by comparing the new fuel with the conventional diesel fuel. Results from the present work include : (1) It was necessary to add a small amount of lubricating additives to DME in order to achieve satisfactory engine operation, to minimize excessive wear in the injection nozzle. (2) Engine performance for both fuels was mutually comparable. (3) Although negligible amounts of soot and very low THC emissions were measured, NOx emission was about the same as in diesel fuel operation. (4) The reduction of NOx emission by retarding the injection timing was highly significant with DME. (5) The NOx emission form the retrofitted engine could be further reduced by dissolving CO2 in DME.
JSME international journal. Ser. 1, Solid mechanics, strength of materials
JSME international journal. Ser. A, Mechanics and material engineering
JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry
JSME international journal. Ser. C, Dynamics, control, robotics, design and manufacturing
JSME International Journal Series A Solid Mechanics and Material Engineering