1. What is Torque?

Torque is a measure of the rotational force produced by an engine or motor. In vehicles, it determines the pulling power and acceleration capability. Higher torque means better ability to overcome resistance and move heavy loads.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( Power \) — Engine power in kilowatts (kW)
• \( RPM \) — Engine speed in revolutions per minute
• \( 9550 \) — Conversion constant (derived from unit conversions)

Explanation: The formula shows that torque is inversely proportional to RPM when power is constant. This means engines produce maximum torque at lower RPMs.

3. Importance of Torque Calculation

Details: Torque calculation is essential for vehicle design, performance analysis, and comparing engine specifications. It helps determine a vehicle's towing capacity, acceleration, and fuel efficiency at different speeds.

4. Using the Calculator

Tips: Enter power in kilowatts (kW) and engine speed in RPM. Both values must be positive numbers. For horsepower, first convert to kW (1 hp = 0.7457 kW).

5. Frequently Asked Questions (FAQ)

Q1: Why is 9550 used in the formula?
A: It's a conversion constant derived from unit conversions: (60 sec/min)/(2π radians/revolution) × 1000 W/kW.

Q2: What's the difference between torque and horsepower?
A: Torque measures rotational force, while horsepower (power) measures work done over time. Horsepower = (Torque × RPM)/5252 (in US units).

Q3: Where can I find my engine's power and RPM values?
A: Check vehicle specifications, owner's manual, or manufacturer's website. Dynamometer tests provide precise measurements.

Q4: Why do diesel engines have higher torque?
A: Diesel engines typically have longer strokes and higher compression ratios, allowing more force per combustion cycle.

Q5: How does torque affect driving experience?
A: Higher torque at low RPMs provides better acceleration from stop and towing power. High-RPM torque improves high-speed performance.