温度变化对发动机台架油耗测量的影响  

Influence of Temperature Change on Engine Bench FuelConsumption Measurement

作　　者：苏赵 崔红根 郑超 SU Zhao;CUI Honggen;ZHENG Chao

机构地区：[1]上海汽车集团股份有限公司技术中心/上海市汽车动力总成重点实验室,上海201804

出　　处：《计量与测试技术》2021年第11期15-17,21,共4页Metrology & Measurement Technique

基　　金：上海市科学技术委员会资助(项目编号:14DZ2260600,课题名称:上海市汽车动力总成重点实验室)。

摘　　要：为了研究燃油温度控制精度对油耗仪测量精度的影响程度,使用流体力学原理分析了温度变化对燃油质量流量测量的影响,并在发动机台架上使用成熟的发动机测试验证,修改油耗仪温度控制单元目标温度,使燃油温度发生变化,试验结果表明燃油温度变化越大,对燃油质量流量测量的影响越大,本文提出四项有效改善温度控制精度的措施,对油耗仪的设计与故障排查提供指导意见。In order to study the influence of fuel temperature control accuracy on the measurement accuracy of fuel consumption meter,the influence of temperature change on fuel mass flow is analyzed by using fluid mechanics principle.The mature engine is tested and verified on the engine bench.The target temperature of temperature con-trol unit of fuel consumption meter is modified to make the fuel temperature change.The test results show that the greater the fuel temperature changes,the greater the impact on fuel mass flow measurement.This paper puts for-ward four effective measures to improve the temperature control accuracy,and provides guid ance for the design and troubleshooting of fuel consumption meter.

关 键 词：温度变化 油耗仪 油耗测量 

分 类 号：V444.34[航空宇航科学与技术—飞行器设计]