Which component in a torque converter is described as being splined to the input shaft and positioned very close to the impeller without touching it?

Which component in a torque converter is described as being splined to the input shaft and positioned very close to the impeller without touching it?

• A. Impeller
• B. Turbine
• C. Stator
• D. Pump drive hub

Answer: (B)

Torque is transmitted in a torque converter by hydraulic action between the impeller and the turbine, with the fluid doing the work of transferring energy from the engine side to the transmission side. The turbine is splined to the input shaft that goes into the transmission, and it sits very close to the impeller inside the housing, with only a thin oil film separating them, so torque is transmitted hydraulically rather than by direct contact. The stator sits between them and redirects the flow, but it’s mounted to the case rather than the input shaft, and the pump drive hub is part of the impeller assembly on the engine side, not the component described. So the turbine best fits the description.

Torque is transmitted in a torque converter by hydraulic action between the impeller and the turbine, with the fluid doing the work of transferring energy from the engine side to the transmission side. The turbine is splined to the input shaft that goes into the transmission, and it sits very close to the impeller inside the housing, with only a thin oil film separating them, so torque is transmitted hydraulically rather than by direct contact. The stator sits between them and redirects the flow, but it’s mounted to the case rather than the input shaft, and the pump drive hub is part of the impeller assembly on the engine side, not the component described. So the turbine best fits the description.