某船用柴油机电控组合泵系统匹配试验研究  

Experimental Study on Matching Electronically Controlled Assembly Pump to Marine Diesel Engine

作　　者：尹自斌[1] 薛阳[1] 史德宝[1] 李琦[1] 

机构地区：[1]集美大学轮机工程学院,福建厦门361021

出　　处：《中国航海》2013年第4期52-55,共4页Navigation of China

基　　金：福建省自然科学基金项目(2012J01230);厦门市科技计划项目(3502Z20113025)

摘　　要：对某船用柴油机电控组合泵系统不同凸轮作用段及不同孔径喷油器进行了匹配性能试验。试验结果表明,合理选择凸轮作用段,可改善柴油机性能。凸轮初始位置位于14.6°CA时,柴油机油耗率较低;随喷油器孔径增大,喷油脉宽减小,喷油速率增大,喷油压力下降,高负荷时下降明显;在中高负荷时,相比0.26mm和0.28mm孔径喷油器,0.30mm对应的柴油机油耗率低,NOx排放浓度和排放比高;而在中低负荷工况,采用0.26mm小孔径喷油器,柴油机油耗率低,NOx排放浓度和比排放高;整体来看,采用0.30mm孔径喷油器,柴油机具有较好的经济性和排放性,但还需进一步提高喷射压力。A series of performance tests of a diesel engine with electronically controlled assembly pump are conducted varying diameter of fuel injectors and cam working segments.Results show that appropriately setting cam working segment can improve diesel engine performance.When the initial position of the cam is set at ‘14.6℃A’,the BSFC get to the lowest value,which decreases as the diameter of injectors increases or fuel injection pulse width decreases,especially in high load conditions; the injection rate increases; and the injection pressure decreases.In medium-high load conditions,0.30 mm fuel injectors give lower BSFC than 0.26 mm and 0.28 mm injectors,but give higher NOx concentration.However,in the medium-low load conditions,0.26 mm fuel injectors give lower BSFC and higher NOx concentration.On the whole,the engine with 0.30 mm fuel injectors has good economic and emission performance,but the injection pressure needs to be raised.

关 键 词：船舶、舰船工程 船用柴油机 电控组合泵 优化匹配 

分 类 号：U664.121[交通运输工程—船舶及航道工程]