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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/25794

Title: Effects of excess air on the performance of marine diesel engine
Authors: 田文國;葉榮華
Contributors: NTOU:Department of Merchant Marine
國立臺灣海洋大學:商船學系
Keywords: Coefficient of excess air;Uniflow scavenging;Exhaust temperature;Sea trial
Date: 2008
Issue Date: 2011-10-20T08:32:28Z
Publisher: 中國航海
Abstract: Abstract:The use of long stroke and the enhancement of the thermal efficiency of the diesel engine have resulted in lower exhaust gas temperatures. This has decreased the efficiency of the propulsion system to some extents particularly with waste heat turbocharger. In consequence, there is an apparent decrease in the flow rate of intake and a temperature rise in exhaust gas, which may cause a larger thermal load and a lower efficiency of the main engine. The purpose of this study is to investigate the effect of the coefficient of excess air to the performance of engine. Through a series of the sea trials for newly built ships, the factors that have a great influence of engine’s performance are determined. In addition, methods of raising the coefficient of excess air are proposed to reduce the thermal load and accordingly enhance the performance of diesel engine. Finally, to achieve an efficient operation of the main engine, an example of trouble shooting and maintenance of the engine is given for practical applications.
Relation: 39783
URI: http://ntour.ntou.edu.tw/handle/987654321/25794
Appears in Collections:[商船學系] 期刊論文

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