Definition
Stall speed affects launch rpm and spool characteristics with turbos.
Lockup converters improve highway efficiency.
Automotive Wiki
Drivetrain
Torque Converter
A fluid coupling in automatic transmissions multiplying torque at low speed.
Related terms
- TransmissionThe gearbox selecting gear ratios between engine and drive wheels.
- ClutchA friction device connecting and disconnecting engine power to the transmission.
- DifferentialA gearbox allowing drive wheels to rotate at different speeds while turning.
- DriveshaftA rotating shaft transmitting torque from transmission to differential in RWD an…
- Limited-Slip DifferentialA differential that limits speed difference between left and right wheels under …
- Final Drive RatioThe ring-and-pinion ratio multiplying torque before it reaches the wheels.
Category: Drivetrain · Updated August 31, 2026