1. What is Torque Converter Performance?

Torque converter performance is a measure of how effectively a torque converter transfers power from the engine to the transmission. It's calculated by multiplying the stall speed by the efficiency of the torque converter.

2. How Does the Calculator Work?

The calculator uses the performance equation:

Where:

• \( Stall \) — Stall speed in RPM
• \( Efficiency \) — Torque converter efficiency as a decimal (0 to 1)

Explanation: The equation accounts for both the stall speed capability and the efficiency of power transfer through the torque converter.

3. Importance of Performance Calculation

Details: Calculating torque converter performance helps in selecting the right converter for your application, optimizing vehicle acceleration, and improving overall drivetrain efficiency.

4. Using the Calculator

Tips: Enter stall speed in RPM and efficiency as a decimal between 0 and 1 (e.g., 0.85 for 85% efficiency). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is stall speed in a torque converter?
A: Stall speed is the maximum RPM the engine can reach with the transmission in gear and the brakes fully applied before the drive wheels turn.

Q2: What is typical torque converter efficiency?
A: Most torque converters operate at 80-95% efficiency when locked, but much less when in the torque multiplication phase.

Q3: How does performance affect vehicle acceleration?
A: Higher performance values generally indicate better acceleration potential, as the converter can multiply torque more effectively at lower speeds.

Q4: What factors affect torque converter performance?
A: Key factors include stator design, impeller/turbine blade angles, fluid viscosity, and lock-up clutch operation.

Q5: When should I consider upgrading my torque converter?
A: Consider an upgrade when modifying your engine for more power, changing transmission gear ratios, or when seeking better launch performance.