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Horsepower and Torque

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Hello, Guys, I will talk about horsepower and torque when it comes to engines of all kind. Today I will try to explain what is Horsepower and Torque.

HorsePower

horsepower

The term horsepower was invented by the engineer James Watt. It defines how fast the engine can get the work done or apply torque to the load. 1HP= 750 watts.

One horsepower is equal to 33,000 foot-pounds in one minute. This means that a horse exerting 1 horsepower can raise 330 pounds of coal 100 feet in a minute, or 33 pounds of coal 1,000 feet in one minute, or 1,000 pounds 33 feet in one minute.

It is derived by the Formula:

HP = Torque x RPM / 5252

Torque

torque curve

It is the measure of how much twisting force and engine crankshaft can produce. The more torque an engine produces, the greater its ability to perform work.

Engine torque output will vary on how fast the engine is spinning or the RPM. You can see it in the image that as the RPM changes the torque is varying.

More amount of torque is generated in a diesel engine than a petrol engine.

The higher turbo boost pressure, high compression ratio, and greater heat content of the fuel all add to the generation of cylinder pressure that is substantially higher than in gasoline engines too, but it is this continued injection of fuel that really makes the big torque numbers for diesel.

It is calculated T = r*f*sinθ

torque

Courtesy Engineering Explained

About Post Author

Girish

Hello Guys I am a website developer by profession but is always keen on learning new things. I have been investing in Mutual funds, stock market for the past few years because of which I have gained good knowledge. I started my entrepreneur journey in 2019 which lead me to learn more things as I am moving forward. I always love to share whatever I learn. Always had a craze for cars from my childhood, which inspired me to start this website.
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Also published on Medium.

Girish

Hello Guys I am a website developer by profession but is always keen on learning new things. I have been investing in Mutual funds, stock market for the past few years because of which I have gained good knowledge. I started my entrepreneur journey in 2019 which lead me to learn more things as I am moving forward. I always love to share whatever I learn. Always had a craze for cars from my childhood, which inspired me to start this website.

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