VARIABLE CAPACITY TORQUE CONVERTER

摘要

PURPOSE:To provide both improvement of fuel consumption and prevention of creep at idling by mounting a movable wing between a pump and a turbine which is maintained in position of cutting off the flow passage by the force of a spring while the pump runs at a low speed and retracted from the flow passage as the pump speed is increased. CONSTITUTION:Movable wings 7 are pivotally supported by struts 8 on a plurality of bosses 6 which are projected on the radial interior part of a core ring 4 of a pump 1 in such a manner that said wings can be turned to come into and out of the clearance between the outlet 1b of the pump 1 and the inlet 2a of a turbine 2. The gravity center G of each movable wing 7 is shifted toward the rear end thereof and a pin 11 which is secured on a connecting ring 10 is slidably engaged with a slot 9 which is formed in the top area thereof so as to restrict the movement of the movable wing 7. As the pump 1 runs at a low speed the movable wings 7 cut off the fluid passage by the action of twisted coiled springs which are loosely fit to the struts 8 and engaged with the pins 11, thereby reducing the torque capacity.