纯甲醇发动机冷起动系统开发  

Development of Cold Start System for Methanol Engine

作　　者：吴亚兰[1] 王进 刘萌[3] 李庆伟[4] 

机构地区：[1]山东建筑大学机电学院,山东济南250101 [2]李斯特测试设备(上海)有限公司,山东济南250000 [3]中国一汽无锡油泵油嘴研究所,江苏无锡214000 [4]山东大学能源与动力工程学院,山东济南250014

出　　处：《车用发动机》2014年第5期26-29,共4页Vehicle Engine

摘　　要：针对甲醇汽化潜热大,蒸发困难,纯甲醇发动机冷起动困难的问题,开发了一套甲醇加热器来改善甲醇汽化问题。通过PTC热敏电阻加热片给蒸发器提供热量,使蒸发器温度升高。为防止初始加热电流过大,加热用的16个热敏电阻被分成4组,依次间隔30s通电加热。冷起动时控制PTC对甲醇蒸发器加热,当蒸发器内温度达到一定值后起动发动机。试验结果表明,环境温度1℃时,加热器加热到80℃以上即可实现甲醇机的顺利起动。For the difficult cold start of methanol engine, methanol with difficult evaporation caused by the large latent heat, a heater was developed to improve the methanol vaporization. PTC thermal resistor was used to heat the evaporator, in order to avoid the initial large current, 16 thermal resistors were divided into 4 groups and heated the evaporator every other 30 s in turn. During the cold start, the methanol evaporator was heated by PTC, when its temperature reached a certain value, engine was easy to start. The results show that methanol engine can start successfully when the temperature of evaporator reaches 80 ℃ in the environment of 1 ℃.

关 键 词：甲醇发动机 冷起动 甲醇蒸发器 

分 类 号：TK418.9[动力工程及工程热物理—动力机械及工程]