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Vijayent
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Can somebody explain how to calculate brake power in IC engines ?
Are you asking about brake horsepower, or about the braking forces from engine compression braking?Vijayent said:Can somebody explain how to calculate brake power in IC engines ?
Brake power is calculated by measuring the amount of force required to stop the rotating output shaft of an engine. This force is multiplied by the rotational speed of the output shaft to determine the brake power.
The formula for calculating brake power is: BP = (2πNT)/60, where BP is the brake power (in watts), N is the number of cylinders, and T is the torque (in Nm) at the output shaft.
The torque at the output shaft can be measured using a dynamometer, which is a device that measures the force applied to a rotating shaft. The torque can also be calculated by multiplying the force applied to the brake with the radius of the output shaft.
Yes, the type of fuel used can affect the brake power of an IC engine. Different fuels have different energy densities, which can impact the amount of power produced by the engine. In addition, the air-fuel ratio and combustion efficiency can also affect the brake power.
The accuracy of brake power calculations can be affected by factors such as frictional losses, heat losses, and mechanical losses in the engine. In addition, variations in engine speed and load can also impact the accuracy of brake power calculations.