国外甲醇发动机磨损研究的概况

本文对国外10多年来甲醇发动机磨损研究的概况作了综述介绍,指出甲醇发动机发生的是腐蚀磨损,其活塞环和气缸壁上部区域的磨损最严重;甲醇燃料燃烧产物中的甲酸、水及其所含的剩余甲醇是引起甲醇发动机腐蚀磨损的重要物质,过氧化氢促进着这种腐蚀磨损过程。文章还就如何有效地解决甲醇发动机的腐蚀磨损问题进行了初步探讨,提出了应当着重开展的研究工作方向。

A Survey on the Wear Research of the Methanol Engines

The general state of the wear research of methanol engines in the past decade at abroad was reviewed in this paper. It indicated that the wear of methanol engine belonged to corrosive wear. The most serious wear was occurred on the piston ring and the upper region of the cylinder wall. The combustion products of methanol fuel, such as methane acid, water and residual methanol, were the major substances resulting in the corrosive wear of methanol engine. Hydrogen peroxide functioned for promoting this corrosive wear course. The authors also put forward how to solve effectively the corrosive wear problem and give an outline of the major research area in the future: a. Improving the combustion course of methanol fuel in order to rise the efficiency, decrease the concentration of some active substances, i. e. methanol, hydrogen peroxide and formaldehyde, in the burning products. b. Improving the quality of the material in lubrication system, developing the lubricating oil, which is resistant to formic acid and methanol, for the methanol engine lubrication.