"they are basically equal"- Previous Answer
They are not even close to equal. You can't calculate brake horsepower from wheel horsepower unless you know the exact losses through the drivetrain of the vehicle in question. The actual percent lost through any given drivetrain can vary dramatically. In order to know the losses you would need to measure the % difference between the brake horsepower and the wheel horsepower. Then you would already know the brake horsepower, and any calculations would be unnecessary.
FYI-
Brake horsepower is a rating of the engine output before the drivetrain/water pump/alternator/other attachments. It will be a higher number than wheel horsepower. It is measured by a brake dynomometer at the crankshaft of an engine.
Wheel horsepower is generally 15-20% less (sometimes more than 20% less) than brake horsepower depending on whether the vehicle is FWD or RWD, or manual or automatic transmission. Usually the least losses will be in a FWD, manual transmission, and the most losses will be in a RWD, auto transmission.
Auto manufacturers rate their engines in brake horsepower, as it allows them to advertise higher horsepower numbers than what is actually going to the ground.
BHP is a sporting word that simply stands for brake horsepower (brake horse-power).
Brake power is stopping power and horsepower is go power.
one
The BHP in a marine vessel engine has the meaning of Brake Horse Power. Brake Horse Power is power that is measured in the engine's crankshaft.
The BHP in a marine vessel engine has the meaning of Brake Horse Power. Brake Horse Power is power that is measured in the engine's crankshaft.
Brake horsepower (bhp) is a unit of power and is typically measured in horsepower (hp) in the US or in kilowatts (kW) in the metric system. It represents the power output of an engine without any power losses, such as those from accessories or gearbox.
Brake Horse Power
Brake hOrse pOwer
Brake Horse Power
Brake Horse Power.
Brake Thermal efficiency !!
With a Dynamometer.