1. What is Flywheel to Wheel Power?

Flywheel to wheel power represents the actual power delivered to the wheels after accounting for drivetrain losses. It's typically less than the engine's flywheel power due to mechanical losses in the transmission, differential, and other components.

2. How Does the Calculator Work?

The calculator uses the fundamental power formula:

Where:

• \( P \) — Power in watts (W)
• \( E \) — Energy in joules (J)
• \( t \) — Time in seconds (s)

Explanation: Power is the rate at which energy is transferred or converted. This calculator converts the result to kilowatts (kW) by dividing by 1000.

3. Importance of Power Calculation

Details: Understanding wheel power is crucial for vehicle performance analysis, efficiency calculations, and comparing different drivetrain configurations.

4. Using the Calculator

Tips: Enter energy in joules and time in seconds. For vehicle applications, energy can be calculated from dynamometer measurements or derived from torque and rotational speed.

5. Frequently Asked Questions (FAQ)

Q1: What's the difference between flywheel and wheel power?
A: Flywheel power is measured at the engine's output shaft, while wheel power is measured at the wheels after drivetrain losses (typically 10-20% less).

Q2: How can I measure energy for this calculation?
A: Energy can be calculated by integrating power over time or from work done (force × distance).

Q3: What are typical kW values for vehicles?
A: Passenger cars typically range from 50-300 kW at the wheels, while performance vehicles can exceed 500 kW.

Q4: How does this relate to vehicle performance?
A: Wheel power directly affects acceleration and top speed, while flywheel power represents the engine's maximum output.

Q5: Can this be used for electric vehicles?
A: Yes, the same principles apply, though EV drivetrains typically have lower losses than internal combustion vehicles.