A comprehensive study on the emission characteristics of E-diesel dual-fuel engine

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• 作者：A. Avinash ; P. Sasikumar ; ^{sasi_me75@yahoo.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：E-diesel fuel ; Premixed combustion ; Emission characteristics
• 刊名：Alexandria Engineering Journal
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：55
• 期：1
• 页码：351-356
• 全文大小：1333 K

文摘

Each year, the ultimate goal of emission legislation is to force technology to the point where a practically viable zero emission vehicle becomes a reality. Albeit the direction to reach this target is a formidable challenge, homogeneous charge compression ignition (HCCI) is a new combustion concept to produce ultra low nitrogen oxides (NO_x) and smoke emissions. By the way, an endeavor has been made in this work to achieve a simultaneous reduction in both NO_x and smoke levels in a direct injection compression ignition engine converted to operate on premixed charge compression ignition mode. Indeed, these promises were made possible in this work by preparing premixed fuel–air mixture outside the engine cylinder. For this purpose, ethanol was injected in the intake port at various premixed ratios (5%, 10%, 15%, 20%, 25% and 30%) and conventional diesel was injected as usual. It was extrapolated from the experimental results that e-diesel operation can significantly reduce NO_x and smoke levels. In addition, NO_x and smoke levels reduced in this experimental study with increase in premixed fraction. Nevertheless, unburned hydrocarbons (UBHC) and carbon monoxide (CO) emissions exhibited reverse trend with increase in premixed fraction and the maximum value of HC and CO emission levels was noted with 30% premixed fraction.