Property Requirement and Development Progress of Metal Belt-Drive Continuously Variable Transmission Fluid

Metal belt-drive continuously variable transmission is already being increasingly applied to the car. The transmission fluid using for it is not only the friction character controlling medium and cooling medium for blocks/pulley friction pair and wet clutch components, the lubricating medium of bearing, hydraulic pump and gear components, but also the transferring medium of hydraulic energy for hydraulic control system and hydraulic torque converter. The excellent tribological behavior is the key property of metal belt-drive continuously variable transmission fluid. Further more, it should possess superior performances in other area, including lubrication, oxidation stability, viscosity-temperature properties, and so on. And the domesticalization study on metal belt-drive continuously variable transmission fluid should be noticed emphatically for speeding up the industrialization process of domestic metal belt-drive continuously variable transmission.