煤基车用替代燃料润滑性的研究

Fuel lubricity is one of important property of fuel. Coal-base fuels such as dimethyl ether, methanol and F-T diesel are good alternative clean fuel for compression ignited combustion engine. However, due to the different physical and chemical properties of these coal-base alternative fuels from conventional diesel fuel, the current lubricity assessment method may be not suitable for these coal-base fuels. So it is urgent to study the lubricity assessment method for these coal-base fuels. In this paper a full scale pump method is used to assess the fuel lubricity. Results show that it may be a good lubricity assessment method for coal-base vehicle alternative fuels. Experimental results also prove DME and methanol have poor lubricity, while the lubricity of F-T diesel is better than them.