A Study of Fuels of Greater Carbon/Hydrogen Ratio for Precombustion Diesel Engine on Heat Release

• Main Authors: Tsai, Shiu-Bor, 蔡旭博
• Other Authors: Horng-Wen Wu
• Format: Others
• Language: zh-TW
• Published: 1996
• Online Access: http://ndltd.ncl.edu.tw/handle/80289054143437885207

碩士 === 國立成功大學 === 造船工程學系 === 85 === The investigation on heat release rate is fundamental and important for engine combustion process. Especially for fuels of greater carbon/hydrogen ratio, higher viscosity used in diesel engine combustion. Beside carbon /hydro gen ratio as parameter, this study tries to futher analyze the specie s and compositions of hydrocarbon compound in these fuels. The influe nce of different composition of hydrocarbon on heat release process in eng ine will be analized. The research method is proceed as follows. The oil was separated into satura te (SAT) and aromatic (ARO) by liquid column chromatography.The gas is fit ted out with a capillar column and a flame ionization detector. The compos ition and molecules of hydrocarbon compound in fuels of greater carbon /hydro gen ratio are analyzed with standard material of hydrocarbon compound. The cy linder gas pressure, flame temperature, needle lift, fuel consumption and ai r flow rate e.t.c. will be measured and recorded under various engine speed and load with these fuels. After accessing the multi-cycle data of pressu re, flame temperature and needle lift vias crank angle with the high speed data acquistion system, the data are analyzed by a microcomputer system . Condictional sampling will be applied to data measurements. The heat releas e rate will be calculated by themodynamics model. The influence of hydroc arbon composition and structure on the diesel combustion phases will be inv estigated,and the resulting effect on heat release rate also will be.