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Torque Converter in Automatic Transmissions

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May 21, 2025
Category Connection: Transmission Parts
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he torque converter is a critical hydraulic component in automatic transmissions, serving three key functions to ensure smooth and efficient power delivery:

1. Power Transfer (Coupling Engine to Transmission)
Replaces the mechanical clutch in manual transmissions, allowing the engine to keep running while the vehicle is stopped.

Uses transmission fluid (ATF) to transfer power from the engine to the transmission input shaft.

2. Torque Multiplication (Low-Speed Boost)
At low RPM (e.g., during acceleration), the stator redirects fluid flow to multiply torque (up to 2x engine torque).

Provides extra pulling power for uphill starts or heavy loads.

3. Smooth Slipping & Lock-Up (Efficiency Control)
Slipping Phase: Allows gradual engagement to prevent jerky starts.

Lock-Up Clutch: At cruising speeds, it mechanically locks the converter to eliminate slippage, improving fuel efficiency.

Key Components
Impeller (Pump): Driven by the engine, flings fluid outward.

Turbine: Connected to the transmission, spins from fluid force.

Stator: Redirects fluid to enhance torque (via one-way clutch).

Lock-Up Clutch: Engages at highway speeds for direct drive.
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#transmission torque converter #Automatic Transmission Parts #transmission clutch assembly
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