进气预热对柴油机低温启动性能影响的试验研究  

Experimental study on effect of intake preheating on cold starting performance of diesel engine

作　　者：陈月春 李素婷 王霞 王兴元 李兰菊 CHEN Yuechun;LI Suting;WANG Xia;WANG Xingyuan;LI Lanju(Weichai Power Co.,Ltd.,Weifang 261061,China;Weichai Power Emission Solutions Technology Co.,Ltd.,Weifang 261061,China)

机构地区：[1]潍柴动力股份有限公司,山东潍坊261061 [2]潍柴动力空气净化科技有限公司,山东潍坊261061

出　　处：《山东交通学院学报》2021年第2期1-6,共6页Journal of Shandong Jiaotong University

基　　金：国家重点研发计划资助课题(2017YFC0211305)。

摘　　要：为了研究进气预热对柴油机低温启动性能的影响,进行柴油机有、无进气预热及使用不同功率格栅预热下的低温启动性能试验。结果表明:柴油机低温启动采用进气预热时,第2个工作循环缸内开始着火且燃烧能自持;无进气加热时,柴油机启动前8个工作循环内无明显燃烧迹象,第9个工作循环着火后燃烧仍无法自持,缸内失火现象严重,直到第45个工作循环才能自持燃烧。试验样机预热60 s后,温度变化试验表明:采用1.8 kW的格栅预热进气比采用1.2 kW的格栅预热启动前和启动过程中气流最高温度分别提高90.2℃和77.8℃,缸内第1个工作循环温度提升约70℃,起始着火提前角提前2.26°。In order to study the influence of intake preheating on cold starting performance of diesel engine,the cold starting performance tests with or without intake preheating and with different power grid preheating are carried out.The results show that when the diesel engine starts at low temperature with intake preheating,the second combustion cycle cylinder starts to catch fire and the combustion is self-sustaining.When there is no intake heating,there is no obvious sign of combustion in the first 8 working cycles of starting,and after the ignition of the 9th working cycle,the combustion is still unable to maintain itself,and the in-cylinder misfire is serious,until the 45th working cycle.By comparing the temperature changes of the prototype after the preheating of 60 s,it is shown that the air temperature with 1.8 kW grid preheating device is higher than that with the 1.2 kW grid preheating device.The highest air temperature of the grid air flow before and during the starting process increases by 90.2℃and 77.8℃respectively,and the temperature of the first cycle in the cylinder increases by about 70℃,and the advance angle of initial ignition is 2.26°ahead of time.

关 键 词：柴油机 进气预热 低温启动性能 试验研究 

分 类 号：U464.172[机械工程—车辆工程] TK427[交通运输工程—载运工具运用工程]