1. What is the Torque Calculation Formula?

The torque calculation formula \( T = \frac{P \times 9550}{N} \) calculates engine torque from power and rotational speed. This formula is widely used in mechanical engineering to determine the twisting force produced by an engine.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (kW)
• \( N \) — Rotational speed (rpm)

Explanation: The formula converts power in kilowatts and rotational speed in revolutions per minute to torque in Newton meters. The constant 9550 is derived from unit conversion factors.

3. Importance of Torque Calculation

Details: Accurate torque calculation is essential for engine performance analysis, mechanical design, vehicle dynamics, and ensuring proper matching between engines and driven equipment.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is the constant 9550 used in the formula?
A: The constant 9550 comes from the conversion factors between different units: \( \frac{60}{2\pi} \times 1000 \approx 9550 \), which converts from kW and rpm to Nm.

Q2: Can I use horsepower instead of kilowatts?
A: Yes, but you'll need to convert horsepower to kilowatts first (1 kW ≈ 1.341 hp) or use a different constant in the formula.

Q3: What is a typical torque range for automotive engines?
A: Typical passenger car engines produce between 100-500 Nm of torque, depending on engine size and type.

Q4: How does torque relate to vehicle performance?
A: Torque determines a vehicle's acceleration and pulling power, while power determines top speed. Higher torque generally means better low-end acceleration.

Q5: Are there limitations to this calculation?
A: This formula provides theoretical maximum torque. Actual torque may vary due to mechanical losses, engine efficiency, and other factors.