燃油加油机示值误差影响因素分析  

Analysis on Influencing Factors of Indication Error of Fuel Dispensers

作　　者：马俊 廖弘毅[1] 曹宪科 杨超 MA Jun;LIAO Hongyi;CAO Xianke;YANG Chao(Haidian Institute of Metrology,Beijing 100083,China)

机构地区：[1]北京市海淀区计量检测所,北京100083

出　　处：《计量科学与技术》2022年第8期67-71,56,共6页Metrology Science and Technology

摘　　要：燃油加油机示值误差影响因素主要来自环境温度、流量、标准金属量器以及油气回收装置。本文通过多组对比实验,分析了环境温度、流量、标准金属量器及油气回收装置对燃油加油机示值误差的影响。实验表明:夏季燃油温度低于环境温度,标准金属量器检定示值低于实际计量数值,冬季燃油温度高于环境温度,标准金属量器检定示值高于实际计量数值;在检定条件相同情况下,油枪通过大流量加油比小流量加油示值误差大;标准金属量器的构造特征不同会引起油气挥发程度不同,导致其他条件相同时示值误差也不同;启动油气回收装置会导致燃油加油机实际发油量减少,气液比越大,引起的示值误差越大。The influencing factors of the indication error of fuel dispensers mainly come from the ambient temperature,flow rate of, standard metal gauge, and vapor recovery system. In this paper, the influence of such factors on the error of indication value of fuel dispensers are analyzed through multiple groups of comparative experiments. The results showed that the verification value of standard metal gauge is lower than the actual measurement when the gasoline temperature is lower than the ambient temperature in summer. However, the verification value of standard metal gauge is higher than the actual measurement in winter. Under the same verification conditions, the fuel nozzle has a larger indication error when refueling with a large flow than with a small flow. Different structural features of standard metal gauges will cause different degrees of volatilization of oil and gas, resulting in different indication errors when other conditions are the same. Activating the vapor recovery device will reduce the actual oil output of the fuel dispenser, and the larger the gas-liquid ratio, the larger the indication error will be.

关 键 词：燃油加油机 温度 流量 标准金属量器 油气回收 示值误差 

分 类 号：U473.8[机械工程—车辆工程]