低沸点燃料二甲醚润滑性评估实验台的研制
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二甲醚在常温常压下为气态,不能用传统方法评估其润滑性能。根据低沸点燃油的物理特性和高频往复机(HFRR)的基本原理,设计可加压的高频往复机,初步搭建用于低沸点燃油的摩擦磨损试验台架,并采用常规燃油进行油品的可分辨性试验。结果表明,该台架可以用于评价不同油品的润滑性,为二甲醚等低沸点燃油润滑性能评估方法的建立奠定了基础。 Because dimethyl ether (DME) is gaseous at normal temperature and pressure, it is impossible to evaluate the lubricity of DME by using traditional methods. According to the principle of High Frequency Reciprocating Rig (HFRR) and the physical properties of low-boiling point fuel, a HFRR with pressure control was designed, and a wear test device for low-boiling point fuel was constructed. A preliminary resolution test with some regular fuels was done. The results show that the lubricity of different fuels can be evaluated by this rig, and it lays a solid foundation for the establishment of lubricity evaluation method about low-boiling point fuel like DME.
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