Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 30, Issue 7, Pages 731-745Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2004.06.013
Keywords
fuel reforming; hydrogen; diesel; biodiesel; premixed CI combustion
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The application of the exhaust gas fuel reforming process in diesel engines has been studied experimentally as a way to assist the premixed charge compression ignition operation by substituting part of the main fuel with hydrogen-rich gas. The technique involves the injection of hydrocarbon fuel into a catalytic reformer fitted into the exhaust gas recirculation (EGR) system, so that the produced gas mixture is fed back to the engine as reformed EGR (REGR). First, experiments with simulated REGR were conducted with diesel as well as biodiesel as the main engine fuel. Then, experiments with the product gas of a monolith reformer were carried out. In both cases, REGR resulted in a higher premixed combustion rate and reduction of the diffusion combustion phase. The potential of the technique in terms of achieving reduction of smoke and NO., emissions and improved fuel economy has been shown and discussed in the paper. (c) 2004 International Association for Hydrogen Energy. Published by Elsevier Ltd. All rights reserved.
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