内燃机工程2018，Vol.39Issue(1)：56-62,7.DOI:10.13949/j.cnki.nrjgc.2018.01.009
基于热管技术的柴油机燃油加热系统性能分析
Performance Analysis of a Diesel Fuel Heating System Based on Heat Pipe Technology
摘要
Abstract
In order to take full advantage of an engine's exhaust waste heat and to solve the difficult problem of starting a diesel engine during the winter,a set of diesel fuel heating and quick start system was designed.After using the low-grade diesel fuel in the secondary fuel tank to start the engine.The exhaust gas was directed into the main fuel tank from the exhaust pipe through a stainless steel heat pipe to heat the high-grade diesel fuel.The exhaust waste heat characteristics of a six-cylinder diesel engine and its recovery potential were analyzed respectively through the engine bench test.On this basis the working performances of the heat pipe and its system were also tested and analyzed.Results show that at least 1/3 of the diesel engine exhaust waste heat can be where the engine is running in the whole operating range and the exhaust gas temperature range is between 440 K and 800 K.This system's start-up time is only 275 seconds and available heating temperature is within the range of 350 K to 600 K.Finally,the relationship between BSFC brake specific fuel consumption(BSFC)and fuel temperature at the specified engine speed was obtained through the experiment.Results prove that the diesel fuel heating and quick start system used in winter has a significant effect on the fuel economy of the engine.关键词
车用柴油机/余热回收/燃油加热/热管/钠钾合金Key words
vehicle diesel engine/waste heat recovery/fuel heating/heat pipe/4K-Na alloy分类
能源科技引用本文复制引用
任杰锶,董小瑞,张鹏程,汪辉,毛虎平,李书奇..基于热管技术的柴油机燃油加热系统性能分析[J].内燃机工程,2018,39(1):56-62,7.基金项目
国防科技重点实验室基金资助项目(9140C330109150C33001) （9140C330109150C33001）
国家自然科学基金项目(51275489)National Defense Science and Technology Key Laboratory Foundation of China(9140C330109150C33001) （51275489）
National Natural Science Foundation of China(51275489) （51275489）
