摘要
针对目前发动机尾气排放测量中还没有一种可以有效收集发动机尾气中甲醛排放的方法,利用甲醛与水互溶的特性,设计了根据溶水法收集发动机尾气中甲醛排放的装置,在试验中取得了良好的效果。同时探索利用分光光度法测量发动机尾气中的甲醛排放,试验证明使用分光光度法测量发动机的甲醛排放是可行的。利用以上装置和方法对不同比率的甲醇汽油在不同工况下发动机尾气中甲醛排放特性进行了研究,结果表明:甲醛排放与燃料中甲醇含量成正比,与发动机转速和负荷成反比。
Although there are quite a lot of methods for formaldehyde measurement, it is difficult to collect effectively the formaldehyde emission from the engine exhaust gas. Based on the fact that formaldehyde can dissolve in water at any proportion, a formaldehyde collection equipment was developed by water dissolution technique. The formaldehyde concentration in the engine exhaust emissions was measured by a spectrophotometer, and its feasibility was validated by tests. The formaldehyde emission characteristics from art engine fuelled by gasoline-methanol blends with different blending proportions under different working conditions were investigaled by the developed equipment and suggested technique. The results show that the formaldehyde emission is direct proportional to the methanol fraction in the fuel blend, and in inverse proportion with the engine speed and load.
出处
《吉林大学学报（工学版）》
EI
CAS
CSCD
北大核心
2008年第1期32-36,共5页
Journal of Jilin University:Engineering and Technology Edition
基金
国家自然科学青年科学基金项目(50460005)
关键词
动力机械工程
发动机
甲醛排放
分光光度计
power and machinery engineering
engine
formaldehyde emission
spectrophotometer
