1. What is Torque Conversion?

The torque conversion equation calculates engine torque from measured wheel torque and the total gear ratio. This is useful for performance testing and drivetrain analysis in automotive applications.

2. How Does the Calculator Work?

The calculator uses the torque conversion equation:

Where:

• \( \text{Wheel } \tau \) — Torque measured at the wheels (Nm)
• \( \text{Total Ratio} \) — Product of all gear reductions (transmission, differential, etc.)

Explanation: The equation accounts for torque multiplication through the drivetrain, allowing you to determine the engine's actual torque output from wheel measurements.

3. Importance of Torque Calculation

Details: Accurate torque conversion is crucial for performance tuning, diagnosing drivetrain issues, and verifying engine output in dyno testing.

4. Using the Calculator

Tips: Enter wheel torque in Nm and total gear ratio (dimensionless). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is total ratio?
A: Total ratio is the product of all gear reductions between the engine and wheels, including transmission gear, final drive ratio, and any other reduction boxes.

Q2: How do I measure wheel torque?
A: Wheel torque is typically measured using a chassis dynamometer or calculated from force measurements at the tire contact patch.

Q3: Does this account for drivetrain losses?
A: No, this is a theoretical calculation. Actual engine torque may be higher due to drivetrain losses (typically 10-15%).

Q4: Can I use this for electric motors?
A: Yes, the same principle applies to any rotational power source driving through gear reductions.

Q5: What are typical total ratio values?
A: For passenger cars, total ratios typically range from 2:1 to 15:1 depending on gear selection and vehicle design.