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*To*: "glen powell" <gpowell@acacianet.com>*Subject*: Re: fizzicks question*From*: "Avi Meron" <avi@cosmoslink.net>*Date*: Sun, 8 Feb 1998 11:36:51 -0800*Cc*: "Quattro" <quattro@coimbra.ans.net>*Sender*: owner-quattro@coimbra.ans.net

Right, the difference between torque and BHP is the addition of time, there is no "time" in the torque calculation.... Avi -----Original Message----- From: glen powell <gpowell@acacianet.com> To: quattro@coimbra.ans.net <quattro@coimbra.ans.net>; 'vytas@email.nist.gov' <vytas@email.nist.gov> Date: Friday, February 06, 1998 2:09 PM Subject: RE: fizzicks question > >I may be wrong, but I thought there was a direct correlation between torque >and HP. Torque is the 'best' measurement of force or 'power'. 'Horsepower' >is just the rate at which work is being done and is simply torque * RPM. > >The best measurement of the performance of a given engine, or to compare >the performance of two different engines, is to compare the area under the >torque curve between the same lower and upper RPM limits. The engine >with the most area under the torque curve 'wins'. > >This is why, for example, autos with turbo engines with high and broad/flat >torque curves beat autos with engines with far higher peak HP. In the real >world engines must produce high torque across a usable RPM range >because engines do not run constantly and only at peak HP RPM. > >This may be a gross oversimplification or even totally wrong, > >-glen > > >Hi, > >The horsepower is a traditional unit of power (aka amount of work per time >unit)roughly equal to 0.8 kW. Torque is a product of force and leverage, >measured in Newtons per meter (or pound per foot here in USA). There is no >(physical) relation between the two of them. They are related, though, >while discussing the internal combustion engines, as both usually increase >with rpm's, but have different dependences. Hope this won't confuse more. >Regards, >Vytas > >86 5kcst 120k (a rocket) >87 5ks 150k (workhorse) > > > > >

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