Testing and Analysis of Military Vehicle Engine Running on Biodiesel Fuel

• Main Authors: LIEN, CHIN-FENG, 連進峯
• Other Authors: 蘭真
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/42603850815780036387

碩士 === 國防大學理工學院 === 車輛及運輸工程碩士班 === 100 === This thesis deals with the military diesel engines running on different concentrations of biodiesel (B2, B10, B30, B50 and B100). The results of engine testing show that engine running on B2 fuel has the best output torque under no modifying engine setting condition. The deviations of the output torque of engine with different fuel are reduced by increasing the engine load. The emission level of NO can be reduced by increasing the proportion of biodiesel. The engine running on B2 and B100 had the similarly characteristic in output torque and the NO emission when the injection timing was adjusted. Either advancing or retarding the injection timing based on the original setting, the torque shows a declining trend. The NO emission increases significantly by advancing injection the timing. The endurance testing of the fuel pump shows that the biodiesel fuel can help to maintain pump performance. The wear of carbon brush and commutator are significantly reduced by increasing the biodiesel proportion in the blended fuel. The wear of bearing has less effect with the biodiesel proportion. The experiment showed that B10 and B50 have the best anti-wear characteristic. The compatibility testing between fuels and horses shows that the SAE R6 and R9 horses have obviously expanding phenomenon. The SAE R10 horse has the best compatibility with biodiesel fuel. The low-temperature fluidity of biodiesel fuel is a major concern problem of diesel vehicles in the cold weather environment.