PS rating
PS rating
(OP)
Can anyone tell me what PS means when refered to in car engine power??
I understand it to be pferdestarke or something similar...but what does this word mean and what units is it??
I understand it to be pferdestarke or something similar...but what does this word mean and what units is it??
Friar Tuck of Sherwood





RE: PS rating
HAZOP at www.curryhydrocarbons.ca
RE: PS rating
Thus we used to use HP for Horse Power.
What is the S for?
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hth,
chris
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Larry
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Friar Tuck of Sherwood
RE: PS rating
RE: PS rating
RE: PS rating
Maybe it's output is meter'd.
pennpoint
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Friar Tuck of Sherwood
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Calculating this you get about 32572.03 pounds feet per minute. Its a nasty figure coming from pi being involved in the circumference of the circle, so he was generous to the horse when defining the power of his steam engines, and he rounded it up to 33000 pounds (force) feet per minute.
That is one horsepower.
The german equivalent is 75 kilograms force metre per second.
1 g acceleration is defined 9.80665 m/s².
So it comes out to 75*9.80665 = 735.49875 Watts.
Since an inch is defined as 2.54 centimeters and 12 inches make a foot, and a pound is defined as 1/2.205 kg and there are 60 seconds in a minute, and not bothering with the definition of gravity, we get
2.54*0.01*12*(1/2.205)*33000*(1/60)g is a horsepower
ie 76.027210884 g Watts. (g=9.80665)
And the Germans say a horsepower (Pferdstärke) is 75g Watts, abbreviated PS.
Its probably easier to work in metric units, but if the Americans like their Gallon to be 3 inches by 7 inches by 11 inches, 231 cubic inches, that's fine by me.
RE: PS rating
RE: PS rating
HAZOP at www.curryhydrocarbons.ca
RE: PS rating
Btw: metric horses have only nine legs, the tenth has a different function ;)
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Larry
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Thanks for the definition. I assume the Germans simply took the nearest rounded up equivalent to the 736W HP to make life easy??
To complicate matters, Is the HP the same as BHP (My friend tells me that there is a difference between Horse power and brake horse power)
Friar Tuck of Sherwood
RE: PS rating
This page
http://www.brainyencyclopedia.com/encyclopedia/h/h...
provides information on no less than nine different types of horse powers.
RE: PS rating