R&D Of The P-HFRR And Its Application On Lubricity Evaluation Of Low BP Fuel

DME is a potential substitute fuel due to its characteristics of low cost, goodperformance and free pollution. However, its characteristic of low lubricity stillprevents it from being widely used. Traditional test methods for evaluating lubricity offuels like HFRR can’t be applied to test low-boiling point fuel like DME. So in order toevaluate the lubricating property of low-boiling point fuel, the study to develop apressurized lubrication performance evaluation scheme has great practical significance.The main work of the thesis is as following.1. Study the principle of HFRR and make improvements in structure and so on.Design and machine the main vibration system, pressure vessel, signal generation andmeasurement system.2. Choose the friction and WSD as the evaluation index in the P-HFRR test method.Develop and optimize corresponding experimental scheme to evaluate the lubricity oflow-boiling point fuel. Evaluate the performance of P-HFRR by conductingexperiments on traditional fuels like diesel. The results show that P-HFRR system isexcellent in evaluating the lubricity of traditional fuels with high stability anddistinguish capacity.3. Perform experiments to test the lubricity of low-boiling point fuel like diethylether and DME using P-HFRR system. The results show that the P-HFRR performsvery well in evaluating the lubricity of low-boiling point fuel. The lubricity of diethylether is between kerosene and alcohol. The lubricity of DME is lower than alcohol.These results agree well with theoretical prediction.