Measurement and prediction of high-pressure viscosities of biodiesel fuels

摘要: Abstract Nowadays common rail injection systems use high pressures to pump the fuel, even if at these conditions liquid viscosity increases substantially over atmospheric levels. For proper operation of knowledge fuels high-pressure viscosities becomes crucial optimize engine performance. This work reports new experimental data for three biodiesels (soybean, rapeseed and their binary mixture) measured temperatures from 293.15 K 393.15 K up 140 MPa, proposes a correlation capable describing data. The predictions results are excellent studied, presenting overall average relative deviations (OARD) only 3.9% in entire ranges studied. was also extended describe mixtures with diesel an OARD just 3.3%.