Home
Back
Power Loss Equation:
| From: | To: |
The flywheel to wheel power conversion calculates the actual power delivered to the wheels after accounting for drivetrain losses. These losses occur due to friction in the transmission, differential, and other drivetrain components.
The calculator uses the power loss equation:
Where:
Explanation: The equation accounts for power lost between the engine and wheels, typically ranging from 10-20% for rear-wheel drive, 10-15% for front-wheel drive, and up to 25% for all-wheel drive vehicles.
Details: Understanding actual wheel power helps in vehicle performance assessment, tuning, and comparing different drivetrain configurations. It's crucial for accurate performance measurements and modifications.
Tips: Enter flywheel power in kW and drivetrain loss as a decimal (e.g., 0.15 for 15%). Typical loss values are 0.10-0.15 for FWD, 0.15-0.20 for RWD, and 0.20-0.25 for AWD vehicles.
Q1: Why is wheel power less than flywheel power?
A: Power is lost through friction in the transmission, driveshaft, differential, and other drivetrain components before reaching the wheels.
Q2: How accurate are manufacturer power figures?
A: Manufacturers typically report flywheel power. Actual wheel power can be 10-25% less depending on drivetrain configuration.
Q3: Does drivetrain loss vary by vehicle type?
A: Yes, front-wheel drive vehicles generally have lower losses than rear-wheel drive, which in turn have lower losses than all-wheel drive systems.
Q4: Can drivetrain loss be reduced?
A: Some reduction is possible through high-quality lubricants, lightweight components, and efficient drivetrain design, but some loss is inevitable.
Q5: Why measure power at the wheels?
A: Wheel power represents the actual power available to move the vehicle, making it more relevant for performance assessment than flywheel power.