1. What is Engine Torque?

Engine torque is a measure of the rotational force produced by an engine. It represents the engine's ability to do work and is a crucial parameter in evaluating engine performance, especially for acceleration and towing capacity.

2. How Does the Calculator Work?

The calculator uses the engine torque equation:

Where:

• \( \tau \) — Torque (N·m)
• \( P \) — Power (kW)
• \( n \) — Rotational speed (rpm)

Explanation: The constant 9549 comes from unit conversion (60,000 divided by 2π) to convert between kW, rpm, and N·m.

3. Importance of Torque Calculation

Details: Torque is essential for understanding an engine's pulling power, acceleration characteristics, and overall performance. It's particularly important for vehicles that need to carry heavy loads or accelerate quickly.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and rotational speed in revolutions per minute (rpm). Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between torque and horsepower?
A: Torque measures rotational force, while horsepower (power) measures how fast work can be done. Horsepower = (Torque × RPM) / 5252 (in imperial units).

Q2: Why is torque important in vehicles?
A: Higher torque means better acceleration and towing capacity, especially at lower RPMs.

Q3: How can I increase my engine's torque?
A: Torque can be increased through engine tuning, turbocharging, or mechanical modifications, but always consult a professional.

Q4: What are typical torque values for different engines?
A: Small cars: 100-200 N·m, SUVs: 200-400 N·m, trucks: 400-1000+ N·m. Diesel engines typically produce more torque than gasoline engines of similar size.

Q5: Can I use this calculator for electric motors?
A: Yes, the same formula applies to electric motors, though their torque characteristics differ from combustion engines.