THE DEVELOPMENT OF A LUBRICANT TRACTION MEASUREMENT SYSTEM

A ball-disc traction test rig is improved through the development of a lubricant traction measurement system,consisting of a resonance force sensitive quartz sensor,a circuit of the sensor and a rigid bracket jointed by a frictionless hinge.The traction coefficients of a kind of domestic lubricating oil were measured at various normal loads,rolling velocities,lubricant inlet temperatures and slide-to-roll ratios on a ball-disc traction test rig equipped with this traction measurement system.The results show that the traction test curve is smooth and the data enjoy a good accuracy,which indicates that the design of the lubricant traction measurement system is reasonable and the precision of the system is high,especially,at high temperature,high rolling speed and small slide-to-roll ratio.