jueves, 29 de marzo de 2012

Hp (Horsepower)

"Yeah, this car has 675HP, and it accelerates so quickly, sometimes I wonder whether I should start it on 3rd gear"


If you're anything like me, you'd want to slap this person in the face, for being stupid, annoying, and a showoff. You just can't deal with those people.
Also, if you were anything like me, you'd want to understand what he's talking about.
So here's a brief explanation of how horsepower (HP) works:

 1 horsepower = 745.699 watts

 This measure of energy was created by James Watt, when he created his steam engine, he needed to rate the capability of his engines somehow, and decided that the horses his engine was replacing would seem fitting, so he made the observation that a horse would (In a track) make around 144 around the circle in an hour, or about 2.4 per minute, for which the horse would need to travel with a force of about 180 feet per minute. 

"Watt rounded off the speed to 181 feet per minute and multiplied that by the 180 pounds of force the horse pulled (181 x 180) and came up with 32,580 ft.-lbs./minute. That was rounded off to 33,000 ft.-lbs./minute, the figure we use today."

 This figure, however, has been greatly disfigured by automotive companies, when  during the 60's, they began testing cars without important (And heavy) pieces of equipment to get higher torque during the benchmarks, and consequently, more horsepower.

 

 My car, Volkswagen Gol, with a 6 valve 1.6 engine, has an output of 101 hp.

Curious Facts:

Did you know that turning your air conditioning unit on your car actually drains your engine of power?

Did you know that the the most powerful car in the market out there is the  SSC Ultimate Aero TT with a power of 1180Hp, reaching 62 mph in 2.8 seconds, and reaching a speed of 270 mph (or 432 kmh)

Sources:

http://www.web-cars.com/math/horsepower.html 

http://en.wikipedia.org/wiki/Horsepower

1 comentario:

  1. Actually, I didn´t know the most powerful car with the most horsepower. I also thought the air conditioner thing was a myth. So, I learned a couple of new ideas once again. SV

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