| 摘要 |
<p>A hydrodynamic torque transmitter comprises a casing and first and second bladed members, said members being mounted for rotation relative to a frame, each bladed member having a peripheral wall and a plurality of blades extending transversely thereto so as to define a pocket between each pair of adjacent blades and bounded by the blades and peripheral wall, the pockets each having an open mouth, the open mouths of the pockets of one member being disposed in face-to-face relationship with the open mouths of the pockets of the other member so that the pockets cooperate to define a potential circuit for fluid around which, in use, fluid circulates to transmit torque between the bladed members, there being a reaction member disposed in the potential circuit between the first and second members and being prevented from rotation relative to the frame at least in the opposite direction of rotation to the first and second members, the blades of the first and second members and of the reaction member being disposed and arranged to produce a torque multiplication effect when, in use, fluid flows past the reaction member blades, each pocket comprising an unobstructed volume bounded by the blades and the peripheral wall of the member and having an unobstructed open mouth bounded by the free edges of the blades and peripheral wall. The fluid circuit may be partly filled with fluid, the volume of fluid being such that, in use, at low slip ratios the fluid circulation in said circuit is such that the fluid does not at least substantially contact the reaction member whereby the transmitter has the characteristics of a fluid coupling, whilst at high slip ratios, the fluid circulation in said circuit is such that the fluid does contact the reaction member to provide a torque multiplication effect so that the transmitter functions as a torque converter.</p> |
