To calculate wheel horsepower (WHP), divide engine horsepower (EHP) by the drivetrain loss factor (DTLF).
The Wheel Horsepower Calculator can convert engine horsepower to wheel horsepower, accounting for power lost through the drivetrain. This measurement is important for assessing the actual power reaching the wheels, which differs from engine horsepower due to mechanical losses.
By understanding WHP, car enthusiasts, racers, and engineers can better gauge vehicle performance and make informed decisions about modifications.
Formula
WHP = EHP / DTLF
| Variable | Description |
|---|---|
| WHP | Wheel Horsepower |
| EHP | Engine Horsepower (crank horsepower) |
| DTLF | Drivetrain Loss Factor (decimal form) |
Solved Calculations
Example 1:
| Step | Calculation |
|---|---|
| Engine Horsepower (EHP) | 400 HP |
| Drivetrain Loss Factor | 0.85 (manual transmission) |
| Wheel Horsepower Calculation | |
| Result | 470.59 WHP |
Answer: With an engine horsepower of 400 HP and a drivetrain loss factor of 0.85, the wheel horsepower is 470.59 WHP.
Example 2:
| Step | Calculation |
|---|---|
| Engine Horsepower (EHP) | 300 HP |
| Drivetrain Loss Factor | 0.80 (automatic transmission) |
| Wheel Horsepower Calculation | |
| Result | 375 WHP |
Answer: For an engine horsepower of 300 HP and a drivetrain loss factor of 0.80, the wheel horsepower is 375 WHP.
What is a Wheel Horsepower Calculator?
The Wheel Horsepower Calculator is an excellent tool. This tool ensures to estimate the power transferred to a vehicle’s wheels.
In general, it is referred to as Wheel Horsepower (WHP). WHP is the effective horsepower measured at the wheels, accounting for power losses due to factors like drivetrain friction and tire resistance.
It is important to mention that this differs from Crank Horsepower (CHP), which measures power at the engine crankshaft without accounting for such losses.
Above all, if you want to calculate this measurement, simply input the wheel horsepower and the approximate drivetrain loss percentage, which varies based on the type of vehicle and drivetrain. The calculator then converts this into WHP, providing a clearer understanding of the actual performance on the road.
Final Words:
Winding it up, the Wheel Horsepower Calculator allows car enthusiasts and mechanics to get a real-world assessment of vehicle performance by accounting for drivetrain losses, offering a valuable insight into effective power at the wheels.
