文档介绍：摘要本沦文以IMO<<MARPOL公约》附则VI“防止J3{{舶造成大气污染规则”的出台为背景,分析了今后剥船用柴油机的摊放限制必将越来越严格的趋势,得出船用柴油机排放实船洲试势在必行的结论。因此,有必要对柴油机气体排放量的计算方法以及所需参数的测量方法与测量设备选型等问题进行深入地研究,从而进~ 步提出了柴油机油耗的实船测量问题。甬。先,在参考文献l和2的基础上,利用总结出的“简化的氮氧化物排放量训算方法”和误差理论分析-r油耗的测量误差对氮氧化物排放量训算结果所造成的影响,并通过W6L20C型机和渔轮厂的实测数据计算验证,进一步说明了油耗的测试在实船测试中的重要地位。其次,以IMO规定的“实船测试相关参数的仪器的允许偏差”为基准,对目胁通常采用的各种柴油机油耗的实船测量方法:R用油柜量油法、燃油流量计法进行r系统的分析比较。重点研究讨论了燃油流量计法的选用策略,并根据船舶燃油特性、测量性能、安装条件等对实船测试中燃油流量计进行初步选定。然后,讨论了不同情况的船舶,应分别选用容积式或超声波流量计进行油耗的测量。针对目前最为精确和稳定的容积式流量计法,重点分析了漏流、压力损失、粘度密度等对流量一误差特性的影响以及所应进行的温度补偿问题。最后介绍了各类超声波流量计及其原理,并在此基础上确定适合实船上测试油耗的流量计。然后对测量的影响因素进行研究分析,详细介绍其应用注意事项以及实际安装与操作等内容。并通过对美国康刨1010型多功能超声波流量计的技术性能、适用范围的介绍,进一步论证了超声波流量计测量方法的可行性。关键词:N0,排放,实船测试,油耗,容积式流最计,超声波流量计 Abstract In thispaper,the trend ofworldwide emission control and the probability of emission measurement on—board ship isdiscussed inthe context ofannexⅥto MARPOI。73/78 Then theinevitability ofemission measurement on-board isbrought forward Soitisvery necessary tOstudy themethod measuring diesel fuelconsumption Oil—boardship,which is one problem ofengine testOn,board. At first,the reductionism ofNOx calculation and thetheorb,of error are used tO analyzing thefinally influence made from thefuelconsumption measurement significance offuelconsumption measurement on—boardship isillustratedby thedata fromW6L20C marine engine. Secondly,the generally fuelconsumption methods such asdaily oiltankand fuel flowmeters are analyzed selecttactics offuelflowmeters are discussed thesame time,the flowmeter isselected according tothefuel character,measurement performance andfixing condition,etc. Inaddition,aim atthevolumetric flowmeter which is thebestexactitude presently, themain factorssuch as oil]eak,pressure loss,viscidity and density are analyzed. Because thehigh temperature of fuel inship,SO pensation must be considered. Intheend,some sorts ofultrasonicflowmeters andtheirprinciples&re introduced. And the suitable folwmeters are selected according tO the no