In order to maximize the efficiency of gear oil and improve the transportation efficiency and economic benefits of users, an on-line monitoring technology of commercial vehicle transmission and drive train oils is developed to monitor the status parameters of gear oil in real time to change oil according to its quality. The test results show that there is a strong linear relationship between dynamic viscosity and kinematic viscosity of gear oil at different temperatures, and dynamic viscosity can replace kinematic viscosity during viscosity calculation. The variation of dielectric constant with temperature, water content, Fe content and acid value content is obvious, which verifies the feasibility of using dielectric constant as a comprehensive evaluation index of gear oil quality, and provides the experimental research basis for multi-parameter online monitoring of gear oil.

On-line monitoring  /  Gear oil viscosity  /  Dielectric constant