effective horsepower的意思|示意

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Effective horsepower is an important measure of engine output, but one that's often misunderstood. Defined as the mechanical power generated within an engine, effective horsepower is the total amount of work done by an engine in a given time. It’s measured in horsepower (HP).

Though it’s not widely used,effective horsepower is important for engine efficiency. It’s also known as brake horsepower, or bhp. It’s a measurement of the power that would actually be available for use in driving a car. For example, if you are driving a car with a 500hp engine, the effective horsepower of the engine is lower than 500hp because of the power lost through friction and heat.

Effective horsepower is measured during dynamometer tests. A dynamometer is a device that measures torque and speed at the wheels of a car. This can be done with the car stopped or running. If done when running, the dynamometer will measure how much power is used to overcome engine friction, air resistance, and other sources of resistance.

Effective horsepower is usually expressed in terms of a percentage. So, if a car has a 500hp engine, but the dynamometer test reveals it can only generate 400 effective horsepower, the effective horsepower ratio would be 80%. This would mean that the car can only use 80% of its maximum engine power, due to losses in the powertrain.

In conclusion, effective horsepower is an important measure of engine output. It’s the amount of power that is actually available for use in driving a car, and it’s measured by a dynamometer test. The effective horsepower ratio is expressed in terms of a percentage, with 100% representing the maximum engine power.