Design method and locking characteristics of limited-slip differential based on non-circular gears
In this article,efforts are made to develop a differential with variable transmission ratios based on the non-circular gears;it has such outstanding advantages as good interchangeability and strong fault tolerance.Both the configuration design and the torque distribution characteristics of the differential are explored.While clarifying the transmission mechanism of the non-cir-cular gears,both the transmission-ratio function and the ratio of the teeth number are given;in combination with both the trans-mission characteristics of the non-circular gears and the mechanism principle of the differential with variable transmission ratios,the configuration method is presented,and the expression of the locking coefficient is derived.The simulation results show that the ever-growing eccentricity of the differential based on the non-circular gearshelps to improve the locking coefficient,but due to the differential's volume and the gear-teeth defects,it is necessary to limit the eccentricity.Finally,the prototype is developed according to the design method of the non-circular gears,and the locking coefficient is measured to be 2.32,which is basically consistent with the result obtained from theoretical calculation.
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