Results of the analysis of the operation of the torque converter gap seal assembly

Abstract

The article presents an analysis of the operation of the two-stage slot seal assembly of the circulation circle of the experimental U358012VM torque converter. Based on the theoretical analysis, the optimal sizes of the slots of the two-cascade sealing unit were selected, guaranteeing its reliable operation, as well as the optimal size of the drain hole. In the work, based on the calculation of the influence of the design parameters of a two-stage sealing unit, it was revealed that the magnitude of the static pressure of the make-up in the circulation circle significantly depends on the ratio of the sizes of the slots of the pump and turbine shafts of the first cascade, and also depends on the operating mode of the torque converter; in addition, it is desirable that when designing the sealing unit unit according to a two-stage scheme, the radial clearance in the slot on the pump shaft was greater than the clearance on the turbine shaft.