| Adding low carbon alcohol is an effective way to solve the problem of high viscosity and bad low temperature fluidity of biodiesel. With the increase of alcohol volume ratio, fuel density, cetane number, kinematic viscosity, pour point, cold filter plugging point, and LHV quality decrease, oxygen content and latent heat of vaporization increase, which have a direct impact on the performance of the engine. Under the premise of reducing the power of no more than 5%, the proportion of alcohol volume does not exceed 10%, which can significantly reduce the viscosity, so that the fuel flow is enhanced, the quality of atomization is improved, the combustion is complete, and the emission is improved. Increasing the oxygen content is beneficial to increase the burning rate, make the heat release more concentrated, and the combustion is more complete, and the emission is improved. By reducing the pour point and cold filter plugging point, the low temperature fluidity is improved. |