Influences of Chemical Impurities of Diesel Oils on Combustion and Engine Performance

• Main Authors: Wu ,Kuo-Jenn, 吳國振
• Other Authors: Cherng-Yuan Lin;Yuan-Liang Jeng
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/48533577926888317703

碩士 === 國立海洋大學 === 船舶機械工程學系 === 83 === The influences of the sulfur content of diesel oil on the engine performance and combustion characteristics were investig- ated in this study. The temperature and humidity of the inlet air, engine output torque, speed were also varied accordingly. The sulfur content was ranged from 0.3 to 0.85 wt% while engine output torque from 0 to 10kg-m, and speed from 1000 to 2000 rpm. The intake air temperature and relative humidity were set at 20℃ & 40℃ and 50%RH & 90%RH. A four cylinder diesel engine with a displacement volume of 3856㏄ associated with a computerized engine data acquisition system was employed to observe and mea- sure the engine performance under varying operating conditions. The temperature and humidity of intake air were adjusted by an air temperature/ humidity conditioning system. A mechanically stirring machine was used to mix the diesel fuel oil and sulfur compound homogeneously. This study shows the effects of sulfur content on the diesel engine performance are not significant. Nevertheless, the increase of the sulfur content would enhance the formation of SO2 and CO. In addition, higher temperature and humidity of the inlet air would result in considerable reduction of the NOX concentration and lower engine output torque while a higher CO emission and a larger brake specific fuel consumption .