1. What is the Torque Conversion Equation?

The torque conversion equation calculates engine torque from wheel torque by accounting for gear reduction through the transmission and differential. This helps understand the actual torque produced by the engine based on measurements at the wheels.

2. How Does the Calculator Work?

The calculator uses the torque conversion equation:

Where:

• \( \text{Engine } \tau \) — Engine torque (Nm)
• \( \text{Wheel } \tau \) — Wheel torque (Nm)
• \( \text{Gear Ratio} \) — Current gear ratio (dimensionless)
• \( \text{Differential Ratio} \) — Final drive ratio (dimensionless)

Explanation: The equation accounts for torque multiplication through the transmission and differential gearing.

3. Importance of Torque Calculation

Details: Understanding the relationship between wheel torque and engine torque is crucial for performance tuning, drivetrain analysis, and vehicle diagnostics.

4. Using the Calculator

Tips: Enter wheel torque in Nm, gear ratio (for current gear), and differential ratio. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: How do I find my gear ratios?
A: Gear ratios can typically be found in your vehicle's service manual or manufacturer specifications.

Q2: What's a typical differential ratio?
A: Common differential ratios range from about 2.5:1 to 4.5:1 depending on vehicle type and purpose.

Q3: Why is wheel torque higher than engine torque?
A: The transmission and differential multiply torque to the wheels (while reducing speed).

Q4: Can this be used for dyno measurements?
A: Yes, this equation is fundamental for converting wheel dyno measurements back to estimated engine torque.

Q5: Does this account for drivetrain losses?
A: No, this calculates theoretical torque. Actual engine torque may be higher due to drivetrain losses (typically 10-20%).