应用PTC自控温材料加热柴油机燃油的模拟计算  

Simulation of Fuel Temperature of Diesel Engine Heating by PTC Materials

作　　者：李孝禄[1] 顾乐峰[1] 王君[1] 李迎[1] 

机构地区：[1]中国计量学院机电工程学院,杭州310018

出　　处：《农机化研究》2011年第11期211-216,共6页Journal of Agricultural Mechanization Research

基　　金：浙江省大学生科技创新计划项目(2010R409036)

摘　　要：为了研究柴油发动机中PTC材料对柴油的加热效果,应用集中参数法建立了PTC加热系统以及受控对象温度变化的动态特性模型,并进行了加热效果的仿真分析。计算结果表明,利用PTC材料加热高压油管可以有效提高柴油温度,并总结出PTC材料加热高压油管内柴油的一般规律。The PTC materials,as a kind of positive temperature coefficient materials,are used to heat diesel fuel in the high-pressure fuel pipe near the injector in diesel engine,which have a lot of characteristics,such as simple structure,safe and rapid heating,and stable heating temperature around its curie point.In order to study its heating effect on diesel fuel of the high pressure fuel pipe,the dynamical models for both the controlled object and PTC heater are presented by the way of lumped parameter,and the heating effects are also simulated and analyzed.The calculation results show that the diesel temperature is heated by the PTC materials effectively.Meanwhile,the heating law by PTC materials heating diesel fuel in the high pressure fuel pipe of engine is also summarized.

关 键 词：PTC材料 柴油 温度控制 

分 类 号：TK421.1[动力工程及工程热物理—动力机械及工程]